2017Ⓒ 2018 The Institute for Solid State Physics, The University of Tokyo

Activity Report2017

Preface					

1Research Highlights		

2 - 29

Joint Research Highlights

30 - 47

Progress of Facilities		

48 - 55

Conferences and Workshops

56 - 61

Subjects of Joint Research

62 - 157

Publications

158 - 196

Preface

We would like to offer the readers the scientific activity report of theInstitute for Solid State Physics (ISSP) for the Japanese FY 2017.
ISSP was established in 1957 as a joint-use/research institute attachedto the University of Tokyo. In every era, we aim to lead the frontier of“condensed matter and materials sciences” and contribute to science andtechnology from the view of basic research. We have promoted activities
focused on research, education, and joint-use/joint-research.
The first part of the reports “Research Highlights / Joint ResearchHighlights” exhibits experimental and theoretical achievements incondensed matter and materials sciences. In 2017, the number of granted
joint-research proposals is 1,391 and the total number of participantsis 8,191.
The second part includes the reports on progress of facilities in 2017 as follows. (1) In International
MegaGauss Science Laboratory, the pulse magnet has achieved 985 (T) as the world strongest as an in-door record
by destructive methods. (2) The Supercomputer Center (SCC) has started “Project for advancement of software
usability in materials science” for enhancing the usability of the ISSP supercomputer system. In Center of Computational Materials Science, the website "MateriApps" for information on application software in computational
science has been constructed to support community members as the major contractor of K- and Post-K Computer
Projects. (3) In Neutron Science Laboratory, the technical progress of High Resolution Chopper (HRC) spectrometer has been proceeded under high pressure and low temperature environment in cooperation with KEK. (4) In
Laser and Synchrotron Research (LASOR) center, the powerful technique by spin- and angle-resolved photoelectron spectroscopy (SARPES) has clarified the spin-dependent electronic states in topological materials. In
Synchrotron Radiation Laboratory, operand spectroscopy is available by using lasers at Harima branch.
In the following parts, six reports of international conferences and workshops, subjects of joint research, andlist of publications have been presented.
In order to develop the international scientific network as scientific hub based upon the successful
experience of JSPS Program for Advancing Strategic International Networks to Accelerate the Circulation of
Talented Researchers for “Leading Research Network Topological Phenomena in Novel Quantum Matter”(TopoNet) (2014-2016), new programs, the short time (~3 months) international collaboration, international visiting
researchers, and graduate students study abroad, as well as foreign visiting professor and international workshop
programs, have started in 2017.
All these facts confirm that ISSP continues to develop successfully and dynamically as the global center of
excellence of condensed matter and materials sciences. We appreciate continuous support and cooperation ofcommunities for our activities.
June, 2018

Hatsumi MORI
Director
Institute for Solid State Physics,
The University of Tokyo

ISSP Activity Report 20171

Research Highlights
Anisotropic Proton Conductivity Arisingfrom Hydrogen-Bond Patterns in
Anhydrous Organic Single Crystals
Mori Group
Proton conduction is a fundamentally important phenomenon not only in living systems but also in solid materials,
such as fuel cells. Especially, the development of high proton
conducting materials and the elucidation of the conducting
mechanism are one of pivotal issues in this research field.
Recently, organic acid-base salts have attracted increasing
attention as a promising candidate of anhydrous proton
conductors, which can be utilized as electrolyte of fuel cell
above 100 ºC. In this study, we have successfully disclosed
the relationship between proton conductivity and hydrogenbond (H-bond) interactions in such kinds of organic salts,
composed of dicarboxylic acid and imidazole [1].
We have grown high-quality single crystals of imidazolium succinate (Im-Suc) or glutarate (Im-Glu) by evaporation
method in dehydrated methanol and dehydrated acetonitrile
with a typical size of 0.5 × 0.7 × 1.0 mm3 (Im-Suc). As
shown in Fig. 1, the crystal is composed of two-dimensional (2D) sheet structures, in which the imidazolium
cations (Im) and succinate anions (Suc) are connected withhydrogen bonds (H-bonds) [2]. Two N–H moieties of the
Im molecule are connected to carbonyl oxygen atoms of
the Suc molecule with dNO of 2.72 Å (red dashed lines) and2.87 Å (brown dashed lines) and also form short contacts
with the adjacent oxygen atoms of the Suc molecule withdNO ~ 3.05, 3.15 Å (blue dashed lines), like bifurcatedH-bonds. In addition, a C-H···O short contact (gray dashedlines, dCO ~ 3.08 Å) is observed between the Im and Suc
molecules. Furthermore, there is an O-H···O H-bond between
the Suc molecules (green dashed lines, dOO ~ 2.49 Å). On
the other hand, although the shortest C···C distance (3.39 Å)
between the networks is less than the sum of van der Waals
radii (3.40 Å), no effective H-bonds are found between these2D networks (Fig. 1). The shortest N···O distances between
the networks are 3.50 and 3.56 Å which are much longer
than the sum of van der Waals (vdW) radii of N and O atoms(3.07 Å).
The relationship between the crystal shape and crystallographic axes was determined by X-ray diffraction
measurements, where the [1 0 0] and [1 4 –9] directions
are within the 2D network and the [0 1 1] is perpendicular
to the 2D network (Fig. 1). Therefore, by measuring andcomparing the proton conductivity in these three directions,
we have revealed the effects of the H-bonding interactions
and molecular arrangement on the proton conduction. By
the measurement of ac proton conductivity, the complex
impedance planes (Cole-Cole plots) gave almost perfectsemicircle profiles at each temperature, which means thata single Debye-type relaxation occurs in our single-crystal

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ISSP Activity Report 2017

measurements and thus the obtained conductivity is theintrinsic proton conductivity without contributions from thegrain boundaries. Then, we compare the proton conducting
properties in these three directions (Fig. 1). First, the proton
conductivity σ in the directions parallel to the H-bonding
network (σ [1 0 0] and σ [1 4 –9]) and that in the direction
perpendicular to the network (σ [0 1 1]) are compared. At
around 115 °C, the former two directions (σ [1 0 0] = 4.94
× 10–7 S cm–1 and σ [1 4 –9] = 1.27 × 10–7 S cm–1) provide
almost two orders higher conductivity than the latter one(σ [1 0 0] = 3.55 × 10–9 S cm–1). This large difference ismaintained in the present temperature range, indicating thatthe proton conduction occurs more readily in the H-bonding
network than in its perpendicular direction.
Next, σ in the two directions parallel to the H-bonding
network (σ [1 0 0] and σ [1 4 –9]) are compared. At 115 °C, the[1 0 0] direction has about four times higher σ (4.94 × 10–7
S cm–1) than the [1 4 –9] direction (1.27 × 10–7 S cm–1) andthis trend is unchanged in this temperature region. The difference of σ between these two directions (about four times)
is much smaller than that between the parallel and perpendicular directions (two orders) shown above. However, thissmall difference is significant in connection with anisotropyof the proton conduction in the 2D H-bonding network,
especially in terms of the intermolecular interactions andmolecular arrangement.
Moreover. in order to gain further insight into thisrelationship between the difference in ΔpKa and the difference in the proton conductivity, we compare the present
results with those of the analogues. The 1:1 co-crystals ofbenzimidazole, an imidazole derivative with pKaH = 5.49,
and dicarboxylic acid are a similar type of H-bonded proton

Fig. 1. a) Intra- and b) inter-2D-hydrogen (H)-bonded network [2], andc) anisotropic proton conduction along the [1 0 0], [1 4 –9], and [0 1 1]
directions, respectively [1] for an anhydrous proton conductor, imidazolium succinate (Im-Suc). The proton conductivity in intra-network is by
two-orders higher than that in inter-network. Moreover, the anisotropic
proton conduction in intra-network demonstrates the importance of
H-bonded molecular arrangement.

conductors, showing σ = ~10–5 S cm–1 in the glutaric acid(pKa1 = 4.34) salt and ~10–4 S cm–1 in the sebacic acid(pKa1 = 4.72) salt in the compressed pellet state at around
77 °C. This result indicates that the latter salt with a smaller
ΔpKa of 0.77 (= 5.49 – 4.72) shows a higher proton conductivity than the former salt with a ΔpKa of 1.15 (= 5.49 –4.34). This trend is similar to that in the present imidazole
systems, suggesting that the proton conductivity significantly
increases with decreasing ΔpKa. However, the degree ofthe conductivity increase seems to be somewhat different
in the benzimidazole and imidazole systems. Namely, theproton conductivity of the former system is increased oneorder of magnitude by the ΔpKa difference of 0.38 (= 1.15
– 0.77), whereas that of the latter is increased 2–3 orders ofmagnitude by the ΔpKa difference of 0.15 (= 2.76 – 2.61) as
described before. Thus, simply stated, the proton conductivity of the present imidazole system is more sensitive
to the pKa change than that of the benzimidazole system.
This difference of the pKa effect on the proton conductivity
probably originates from the difference in the molecular
structure of imidazole and benzimidazole. Although these
two systems have a similar overall crystal structure, themolecular structure difference would modulate the details,
such as the intermolecular distances, H-bonding manners,
and molecular arrangements, which result in the abovedescribed difference in the pKa effect.
In conclusion, we have revealed the “intrinsic” proton
conductivity without grain boundary contributions in acidbase type anhydrous organic single co-crystals, imidazolium
succinate (Im-Suc) and imidazolium glutarate (Im-Glu), witha 2D H-bonding network. The obtained conductivities are
1~5 × 10–7 S cm–1 (Im-Suc) and 2 × 10–6 S cm–1 (Im-Glu)
within the 2D H-bonding network, which are much higher
than those in the perpendicular direction to the 2D network[4 × 10–9 S cm–1 (Im-Suc) and 6 × 10–8 S cm–1 (Im-Glu)].
These results demonstrate that the H-bonds significantly
promote proton conduction in this kind of anhydrous
materials. Furthermore, we have shown that this proton
conduction is 1) more significant in the H-bonds between
the acid and base molecules than in those between the acidand its conjugate base and is 2) enhanced by decreasing
the difference of pKa between the H-bonded acid and basemolecules. In addition, the present results offer the possibility
that the molecular motions of imidazole play a crucial rolein the proton conduction not only in the 2D H-bond network
but also between the networks. The details about the internetwork proton conduction and also the non-Arrheniustype profile of proton conductivity in the H-bond network
are currently under investigation in terms of the molecular
dynamics by using solid-state NMR and IR spectroscopies,
high-temperature X-ray analysis, and theoretical calculations.

Search for Topological States
in an Organic Dirac Semimetal
Osada Group
A layered organic conductor, α-(BEDT-TTF)2I3, has been
known as a two-dimensional (2D) gapless Dirac fermion
system, namely, Dirac semimetal, with a pair of spindegenerated Dirac cones. Generally, the Dirac semimetal is a
starting point to obtain various topological insulating phases.
In graphene, for example, Haldane showed that the Chern
insulator (quantum anomalous Hall insulator) appears byattaching the alternating flux pattern breaking time reversal
symmetry (TRS) [1]. On the other hand, Kane and Mele
showed that the Z2 topological insulator (quantum spin Hall
insulator) appears by introducing the spin-orbit interaction(SOI) [2]. We have experimentally and theoretically exploredthe topological phases starting from the organic Diracsemimetal.
At ambient pressure, α-(BEDT-TTF)2I3 undergoes ametal-insulator transition into an insulating phase due to thecharge order (CO) at Tc=135K. This CO phase is suppressedby applying pressure, and it perfectly vanishes at about
Pc~1.25GPa, as illustrated schematically in the inset of
Fig. 1(a). Figure 1(a) shows the temperature dependence
of in-plane resistance measured at several pressures. In the
weak CO state around Pc, the resistance shows increase due
to CO below Tc~50K, but the insulator-like increase turns tometal-like decrease at lower temperatures as shown by the
red dashed circle. In addition, in the Dirac semimetal state
above Pc, the resistance exhibits the insulator-like increase at
low temperatures below 10K as indicated by the blue dashedcircle. These behaviors have never been explained.
As their mechanisms, we propose the emergence of
topological states in this organic system. First, we discuss
the possible Chern insulator state in the weak CO state[3]. In the vicinity of CO transition, the NMR measurement by Kanoda's group clarified that not only the charge
density but also spin density are modulated breaking TRS, as
indicated by the clouds in Fig. 2(a). We assume a pattern ofsite potential and staggered magnetic flux on the α-(BEDTTTF)2I3 lattice so as to reproduce the observed potential
and magnetic modulations (Fig. 2(a)). We shows that thesystem becomes a Chern insulator, where gaps open at two
Dirac points, under large enough magnetic modulation, andone chiral edge state appears in the gap along each crystal
edge (Fig. 2(a)). This is an organic analogue of the Haldane
model. The conduction through these edge states explains

References[1] Y. Sunairi, A. Ueda, J. Yoshida, K. Suzuki, and H. Mori, J. Phys.
Chem. C, in press.
[2] J. C. MacDonald, P. C. Dorrestein, and M. M. Pilley, Cryst. GrowthDes. 1, 29 (2001).
Authors
Y. Sunairi, A. Ueda, J. Yoshida, K. Suzuki, and H. MoriFig. 1. (a) Temperature dependence of resistance in α-(BEDT-TTF)2I3
at several pressures. (b) Band dispersion of α-(BEDT-TTF)2I3. The
symbols, "+" and "–", indicate parity at the time reversal invariant wave
numbers.

ISSP Activity Report 20173

Fig. 2. (a) Flux configuration in the organic Haldane model. The
lower panel shows the chiral edge state in the energy spectrum of thenanoribbon. (b) Inter-chain hopping with SOI in the organic KaneMele model. The lower panel shows the helical edge state in the energy
spectrum of the nanoribbon.

the anomalous metallic behavior of resistance observed in
the weak CO state.
Next, we discuss that the Z2 topological insulator statewith small gaps emerges in the Dirac semimetal state underfinite SOI [4]. Using first principles calculations, Valenti
et al. discussed that SOI in BEDT-TTF compounds could
reach 1~2 meV, and finite SOI opens small gaps at Diracpoints causing insulating behavior at low temperatures(Fig. 1(b)). We assume a pattern of inter-chain hopping
accompanied by SOI on α-(BEDT-TTF)2I3 lattice reflecting
the charge disproportionation indicated by the clouds in Fig.
2(b). We demonstrate that gaps open at Dirac points causing
resistance increase, and one helical edge state, which ischaracteristic to the topological insulator, appears in the gap
along each crystal edge. This is an organic analogues of theKane-Mele model. In addition, we generally discuss that a
topological insulator appears under finite SOI as long as SOI
does not cause any band inversion, based on the Fu-Kaneparity product theory (Fig. 1(b)) [5]References[1] F. D. M. Haldane, Phys. Rev. Lett. 61, 2015 (1988).
[2] C. L. Kane and E. J. Mele, Phys. Rev. Lett. 95, 226801 (2005).
[3] T. Osada, J. Phys. Soc. Jpn. 86, 123702 (2017).
[4] T. Osada, arXiv: 1804.09420.
[5] L. Fu and C. L. Kane, Phys. Rev. B 76, 045302 (2007).

below the Curie temperature [1], which has been understoodin terms of the Berry phase effect [2, 3]. A THE of paramagnetic spins has also been reported in the spin-liquid phase ofa kagomé antiferromagnet [4].
In spite of these recent studies of spin THEs, a phononic
THE has remained elusive. A phonon THE was actuallyreported at 2005 in Tb3Ga5O12 (TbGG) [5] prior to theobservations of the spin THEs [1, 4]. However, the measurement of the phonon THE in TbGG was done only at ~5 K,
disabling to find the temperature dependence of the thermal
Hall conductivity (). To find the theoretical model
describing the phonon THE, it is indispensable to measure
in a wide temperature range and to compare the temperature dependence with the theoretical predictions. Furthermore, because TbGG is paramagnetic at ~5 K, it is impossible to exclude a spin THE.
To this end, we performed thermal Hall measurements inthe spin-liquid candidate Ba3CuSb2O9 (BCSO) [6]. BCSO isa perovskite-type insulator, in which the spins of Cu2+ ionsform a honeycomb structure. NMR measurements show thata spin gap opens below ~50 K, enabling us to detect a phono
THE without a spin THE.
Our main result is to find a distinct thermal Hall signal
in a wide temperature range of 2-60 K, revealing that thephonon THE in BCSO shows. As shown in
Fig. 1,is negative in the entire temperature range
measured, shows a peak around 50 K, and decreases at lower
temperatures. A log-log plot of(inset of Fig. 1) showsthatat low temperature. We conclude that the
THE comes from phonons because a spin THE is supposed
to show an activated temperature dependence owing to thespin gap formed below 50 K.
What is the mechanism of the phonon THE in BCSO?
In TbGG, phonon scatterings by excess Tb3+ ions have been
pointed out as a possible mechanism of the phonon THE [8].
In BCSO, we also find the longitudinal thermal conductivity
is strongly suppressed by a random structure of Cu2+-Sb5+
dumbbells. Therefore, this strong scattering effects onphonons in BCSO can be related to the phonon THE as thatin TbGG. However, the T2 dependence ofhas not beensuccessfully reproduced by theories, which may be owing to
the difference in scattering effects on phonons by the 4f Tb3+
ions with a large quadrupole moment and those by the 3d
Cu2+ ions. We believe that our finding ofleads
to further theoretical and experimental studies to clarify themechanism of phonon THEs in insulators.

Authors
T. Osada, A. Mori, K. Yoshimura, M. Sato, T. Taen, and K. Uchida

Thermal Hall Effect of Phonons
Yamashita and Nakatsuji Groups
Hall measurements are fundamental probes for studying
the physical properties of metals. Recently, Hall measurements in insulators, which are observed as thermal Hall
effects (THEs), are being recognized as a new probe to study
the elementary excitations in insulators. Since there is nocharged heat carries in insulators, a THE in an insulator is
not originated from the Lorentz force, but from intrinsic(e.g. Berry phase effect) or extrinsic (e.g. skew scatterings)
mechanisms as the anomalous Hall effect. In fact, a THE
of magnons has been observed in ferromagnetic insulators

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ISSP Activity Report 2017

Fig. 1. The temperature dependence of thermal Hall conductivity ( ).
The dashed line is a guide for the eyes. The inset showsin log-log
scale. The solid lines show slopes forT n (n = 1, 2, 3).

References[1] Y. Onose et al., Science 329, 297 (2010).
[2] H. Katsura, N. Nagaosa, and P. A. Lee, Phys. Rev. Lett. 104,
066403 (2010).
[3] R. Matsumoto, R. Shindou, and S. Murakami, Phys. Rev. B 89,
054420 (2014).
[4] D. Watanabe et al., Proc. Natl. Acad. Sci. USA 113, 8653 (2016).
[5] C. Strohm, G. L. J. A. Rikken, and P. Wyder, Phys. Rev. Lett. 95,
155901 (2005).
[6] S. Nakatsuji et al., Science 336, 559 (2012).
[7] K. Sugii, M. Shimozawa, D. Watanabe, Y. Suzuki, M. Halim, M.
Kimata, Y. Matsumoto, S. Nakatsuji, and M. Yamashita, Phys. Rev.
Lett. 118, 145902 (2017).
[8] M. Mori et al., Phys. Rev. Lett. 113, 265901 (2014).
Authors
K. Sugii, M. Shimozawa, D. Watanabe, Y. Suzuki, M. Halim,
M. Kimata, Y. Matsumoto, S. Nakatsuji, and M. Yamashita

Quantum-Disordered State ofMagnetic and Electric Dipoles in a
Hydrogen-Bonded Organic Mott System
Yamashita and Mori Groups
Strongly enhanced quantum fluctuations often lead toa rich variety of quantum-disordered states. A representative case is liquid helium, where zero-point vibrations of thehelium atoms prevent its solidification at low temperatures. A
similar behavior is found for the internal degrees of freedom
in electrons. Among the most prominent is a quantum spin
liquid (QSL), in which highly correlated localized spins
fluctuate even at absolute zero. Recently, a coupling of spinswith other degrees of freedom has been proposed as aninnovative approach to generate even more fascinating QSLs,
but such an idea is limited to the internal degrees of freedom
in electrons.
The hydrogen-bonded organic Mott insulator κ-H3(CatEDT-TTF)2 (hereafter abbreviated as H-Cat) [1-3] synthesized by Mori group in ISSP shows considerable promise
as a new type of QSLs, where H2Cat-EDT-TTF is catecholfused ethylenedithiotetrathiafulvalene. This compound has
been reported to exhibit a two-dimensional (2D) QSL state;
however, in contrast to other 2D organic QSL materials, the2D π-electron layers of H-Cat are connected by hydrogenbonds, not separated by non-magnetic insulating layers.
From the previous theoretical works [4,5], zero-point motion
associated with this hydrogen atoms (termed “proton fluctuations”) is believed to be strongly enhanced, leading to therealization of a QSL state through strong coupling between
the hydrogen bonds and the π-electrons. However, it has
not been established whether such strong quantum proton
fluctuations are indeed present in H-Cat, and if so, how thequantum fluctuations affect the QSL state.
Here we demonstrate, by using a combination of dielectric permittivity and thermal conductivity measurements, thatthe quantum proton fluctuations in H-Cat provide a quantumdisordered state of magnetic and electric dipoles through thecoupling between π-electrons and hydrogen atoms [6]. Firstof all, we focus on proton dynamics in H-Cat. As shownin Fig. 1, the dielectric constant εr (T) of H-Cat steeply
increases with decreasing temperature and then saturates
below 2 K. The temperature dependence of εr (T) for H-Cat
is a typical dielectric behavior in quantum paraelectric (QPE)
materials such as SrTiO3, in which long-range electric orderis suppressed by strong quantum fluctuations. From thefitting result by Barrett formula describing the QPE state, wehave found the presence of an antiferroelectric (AFE) interaction in H-Cat, which is consistent with the AFE configuration resulting from a hydrogen-bond order in the deuterated
analog of H-Cat, κ-D3(Cat-EDT-TTF)2 (denoted as D-Cat)[3]. Thus, the observed quantum paraelectricity in H-Cat
clearly shows the presence of strong quantum fluctuations
that suppress the hydrogen-bond order as observed in D-Cat,that is, the persistence of enhanced proton fluctuations down
to low temperatures.
We next examine how the proton dynamics in the QPE
state affects the nature of the QSL state in H-Cat. For thispurpose, in Figure 1, we plot the temperature dependenceof the thermal conductivity divided by temperature κ/T(this work) and the magnetic susceptibility χ [2] for H-Cat,
together with the above-mentioned εr. Below 2 K, thethermal conductivity increases upon entering the QPE state,
where εr saturates. The characteristic temperature coincides
with the temperature at which the susceptibility becomes
constant; this occurs when the spin correlation develops in
the QSL state. The coincidence of the QPE and QSL states
is surprising and strongly suggests that the developmentof the quantum proton fluctuations triggers the emergenceof the QSL. We now theoretically analyze the effects ofproton dynamics on the QSL state. According to our modelthat captures the essence of H-Cat system [7], low-energy
proton fluctuations (~1 meV) modulate the amplitude ofthe electron transfers and the energy levels of the molecularorbitals. These effects may induce a dynamical modulationof exchange coupling energy J as well as a reduction of theon-site Coulomb repulsion U due to the bi-polaron effect. As
a result, the magnetic long-range order would be suppressedby proton dynamics of H-Cat, inducing a QSL.
In conclusion, we have successfully discovered aquantum-disordered state of magnetic and electric dipoles ina hydrogen-bonded organic Mott system, H-Cat. Importantly,
this system has 2D π-electron layers connected by hydrogenbonds, in contrast to the other organic QSL candidates withthose separated by anion layers. This structural feature of
H-Cat enables us to discover a new mechanism to stabilize the QSL state, where the electron and proton degrees
of freedom are strongly coupled. Utilizing such a strong
coupling between multiple degrees of freedom will advanceour explorations of quantum phenomena such as orbital–spin
liquids and electric–dipole liquids.

Fig. 1. A combination of the temperature dependences of the dielectric
constant εr (blue, left axis), the thermal conductivity divided by temperature κ/T (red, left axis) and the magnetic susceptibility χ (green, rightaxis) for H-Cat. The values of χ are taken from ref. 2. The dashed line isan eye guide. The shaded region represents the QPE and QSL phases.

ISSP Activity Report 20175

References[1] T. Isono et al., Nat. Commun. 4, 1344 (2013).
[2] T. Isono et al., Phys. Rev. Lett. 112, 177201 (2014).
[3] A. Ueda et al., J. Am. Chem. Soc. 136, 12184 (2014).
[4] T. Tsumuraya, H. Seo, R. Kato and T. Miyazaki, Phys. Rev. B 92,
035102 (2015).
[5] K. Yamamoto et al., Phys. Chem. Chem. Phys. 18, 29673(2016).
[6] M. Shimozawa et al., Nat. Commun. 8, 1821 (2017).
[7] M. Naka and S. Ishihara, arXiv:1801.04661.
Authors
M. Shimozawa, K. Hashimotoa, A. Ueda, Y. Suzuki, K. Sugii,
S. Yamada, Y. Imai, R. Kobayashia, K. Itoha, S. Iguchia, M. Nakab,
S. Ishiharab, H. Mori, T. Sasakia, and M. Yamashita
aInstitute for Materials Research, Tohoku University
bTohoku University

Disguised Antiferromagnetic Orderin a Two-Dimensional Quasicrystal
Tsunetsugu Group
Quasicrystals are the alloys with a lattice structure thatis not consistent with translation symmetry but its Fourier
pattern S(k) comprises a set of delta-function peaks likethose in crystals. In most of quasicrystals, however, thestructure factor has a rotation symmetry that is prohibitedin crystals and also self-similarity S(λ–n k) ~ Λ–n S(k). It is
expected that this unique lattice structure has a crucial effecton magnetic order driven by strong electron correlation,
and we have explored this issue in the simplest quasicrystal,
the Penrose lattice in two dimensions. The Penrose lattice
has the five-fold rotation symmetry, characterized by thegeometrical factor known as the golden ratio τ = 2cos(π/5) =—(√ 5 + 1)/2
To study an antiferromagnetic order in the Penrose
lattice, we have employed the half-filled Hubbard modelwith sites on the vertices of rhombus units. When the
Coulomb repulsion is switched off (U = 0), this model has athermodynamically degenerate single-electron states called
confined states; each of them is strictly confined in a finite
region of the lattice [1]. Since their energy locates at thecenter of spectrum E = 0, they contribute to the formation ofmagnetic moments, upon switching on U.
Magnetic moments have nonvanishing amplitudes atmost of sites, even in the limit of U→+0; the site averageof moment size is 81/2–25 τ ~ 0.05. We know that theyshould exhibit an antiferromagnetic long-range order at zeroFig. 1. Disguised antiferromagnetic order in the Penrose lattice. In eachcluster, only one-sublattice sites have nonvanishing magnetic moments
at U=+0, and they polarize in the same direction marked by arrow,
whereas the moment size is zero everywhere in the other sublattice.

6

ISSP Activity Report 2017

temperature, because the Penrose lattice is bipartite despite
the lack of translation symmetry. A big surprise is that thisantiferromagnetic order is disguised and the moments exhibita very complicated fractal-like spatial pattern. The magnetic
order is cluster antiferro; moments are polarized in the same
direction in each cluster, and neighboring clusters polarize inthe opposite directions [2]. The clusters have sizes ranging
from 31 sites to infinity, and their densities follow a powerlaw scaling with their size. This is an intricate consequenceof quasiperiodic lattice structure. With increasing U, themagnetizations of minority spin continuously evolve, andthe magnetic order approaches a conventional Néel type withstaggered magnetization. This crossover depends on local
environment of each site, and it is also dominated by thequasiperiodic structure.
This study is performed by collaboration with Akihito
Koga at Tokyo Institute of Technology.
References[1] M. Arai, T. Tokihiro, T. Fujiwara, and M. Kohmoto, Phys. Rev. B
38, 1621 (1988).
[2] A. Koga and H. Tsunetsugu, Phys. Rev. B 96, 214402 (2017).
Author
H. Tsunetsugu

Interaction Effect on Adiabatic Charge
Pumping via a Single-Level Quantum Dot
Kato Group
Charge transport from one reservoir to another reservoir
induced by periodic operation on devices is called "charge
pumping''. Recent development of device fabrication andmeasurement technique has enabled us to realize charge
pumping in nanoscale devices such as quantum dots (QDs).
In particular, quasi-static pumping under slow parameter
driving, i.e., "adiabatic'' pumping is an important phenomenon because pumping charge depends only on a trajectoryin the parameter space. Application of adiabatic pumping to,e.g., current standard and single electron injection has been
discussed in a number of theoretical and experimental works[1].
For adiabatic pumping, we need to take a period ofdriving as larger than characteristic time scales of the system.
Therefore, coherent transport in quantum dots strongly
coupled with electronic leads, which have a short relaxation time, is suitable to fast adiabatic pumping. However,theoretical framework for charge pumping in QDs strongly
mixed with leads has not been studied so far. In our previous
paper [2], we calculated pumping charge within the first-

Fig. 1. Schematics of our model for adiabatic charge pumping due
to driving of reservoir parameters (temperatures and electrochemical
potentials). Here, εd and U are an energy level and a Coulomb interaction in a quantum dot, respectively. The dot-reservoir couplings aredenoted by ΓL and ΓR.

the electrons in the QD, which is in principle calculated
by numerical methods. It is an important future problem tocompute the pumped charge without any approximation in
the strong Coulomb interaction region. From the viewpointof non-equilibrium thermodynamics, it is also a challenge togeneralize the present formalism to heat pumping and work
exchange and to discuss quantum effects on efficiency ofsmall engines.
References[1] J. P. Pekola et al., Rev. Mod. Phys. 85, 1421 (2013).
[2] M. Hasegawa and T. Kato, J. Phys. Soc. Jpn. 86, 024710 (2017).
[3] M. Hasegawa and T. Kato, J. Phys. Soc. Jpn. 87, 044709 (2018).
Authors
M. Hasegawa and T. Kato

Crossover between Kondo States in
Carbon Nanotube Quantum Dot Observedby an Ultrasensitive Noise Measurement
Kato Group

Fig. 2. Pumped charge per one cycle obtained by the renormalized
perturbation theory for (a) the electrochemical-potential driving caseand (b) the temperature-driving case.

order perturbation theory with respect to Coulomb interaction. In the present study [3], we aimed to construct generalformalism, which can treat arbitrary strength of Coulombinteraction beyond our previous work.
We considered adiabatic charge pumping via a singlelevel QD system induced by reservoir parameter drivingin the coherent transport region (see Fig. 1). We formulated pumped charge for arbitrary Coulomb interaction
by nonequilibrium Green’s function method. To handle
the time-dependent reservoir temperatures, we introduced
a thermomechanical field, which describes temperature
modulation via an energy rescaling of the reservoirs. We also
employed the adiabatic approximation to obtain pumped
charge under adiabatic operation.
We derived a general formula for the pumped charge
in terms of the Berry connection. It is expressed by thetwo-particle Green’s function of electrons in the QD. Ourformalism covers the low-temperature strongly-correlated
region, which cannot be treated in the previous theoreticalmethods. Based on our general formulism, we calculated
the pumped charge by employing the renormalized perturbation theory (see Fig. 2). We showed that for both theelectrochemical-potential-driven and the temperature-driven
case, the pumping strength has a maximum and a minimum
as a function of the QD energy level, and the position of the
maximum (minimum) moves away from the particle-holesymmetric point as the Coulomb interaction increases. For
the electrochemical-potential-driven case, the maximum
value of the pumping strength is once enhanced, and thensuppressed as the Coulomb interaction increases (see Fig.
2 (a)). On the other hand, for the temperature-driven case,the maximum value continues to increases as the Coulombinteraction increases (see Fig. 2 (b)). This difference was
explained from the renormalized parameters consistently.
Our formalism states that adiabatic charge pumping
can be evaluated by the two-particle Green’s function of

We have realized the SU(2) and SU(4) Kondo many-bodystates in a carbon nanotube quantum dot made by the cuttingedge nanofabrication technology, and finely controlled acrossover phenomenon between the two Kondo states byapplying magnetic fields. Our very accurate current noise
measurement successfully elucidated that the local moment
structure within the quantum dot can be adjusted to increase
the quantum fluctuation of the Kondo state [1].
The Kondo effect is a typical quantum many-bodyphenomenon, where electrons gather around the momentof a localized electron and form a new state (Kondo state)
together and quantum fluctuation of the angular momentof the electrons plays the essential role in formation of the
Kondo state. The electrons confined in the carbon nanotube
quantum dot hold not only spin but also additional degrees
of freedom, namely, the direction of electron motion (seeFig. 1), which brings a variety to the Kondo state. However,
it is not easy to distinguish the SU(2) and SU(4) Kondo
states by power laws emerging in observed current asfunction of temperatures or applied bias-voltages, because
both of the Kondo states are governed by the local Fermi
liquid. The key idea of our work is to observe and analyze
current noise. The Fano factor given by the ratio of thenonlinear current noise and the nonlinear current repre-

Fig. 1. Two aluminum electrodes (cyan) are attached to a carbon
nanotube quantum dot (yellow). Electric current and its noise throughthem are investigated. Electrons confined in the carbon nanotube dot
hold not only the spin degree freedom but also a degree of freedom
due to the direction of electron motion (red arrows wrapped around thenanotube), which can bring a rich variety of the Kondo state.

ISSP Activity Report 20177

In-Plane Spin Filtering in a Resonant
Diode with Double Quantum Well
Katsumoto Group

Fig. 2. Fano factor as a function of the Wilson ratio.

sents a strength of the local-Fermi-liquid interaction, whichindicates a strength of quantum fluctuation of the Kondo
ground state. The Fano factor also shows an intrinsic value
corresponding to the local moment which causes the Kondo
state.
Figure 2 shows the observed Fano factor F as a functionof the Wilson ratio R. In our experiment, the Wilson ratio
is controlled by applied magnetic field. The values of the
Wilson ratio corresponding to experimentally appliedmagnetic field are estimated by numerical renormalization
calculation [2]. The Wilson ratio are varied from R = 4/3
at the zero magnetic field, where the SU(4) Kondo state isrealized, to R = 2 , the large magnetic field limit where theSU(2) Kondo state is realized. In Fig. 2, the Fano factor
varies from F = 1.4 ± 0.1 at the zero field to F = 1.7 ± 0.1 ata large field. These observations well agree with F = 3/2 and5/3 theoretically predicted for the SU(2) and SU(4) Kondo
states, respectively [3, 4].
In this research, we have experimentally demonstrated
that the strength of quantum fluctuation depends on thetype of Kondo states. Both the Kondo effect and quantum
fluctuation are central issues in physics. Our result brings a
deeper understanding of quantum many-body phenomena,and opens a new way to control quantum fluctuation and to
explore new function of materials.
Refernces[1] M. Ferrier, T. Arakawa, T. Hata, R. Fujiwara, R. Delagrange, R.
Deblock, Y. Teratani, R. Sakano, A. Oguri, and K. Kobayashi, Phys.
Rev. Lett. 118, 196803 (2017).
[2] Y. Teratani, R. Sakano, R. Fujiwara, T. Hata, T. Arakawa, M.
Ferrier, K. Kobayashi, and A. Oguri, J. Phys. Soc. Jpn. 85, 094718(2016).
[3] R. Sakano, T. Fujii, and A. Oguri, Phys. Rev. B 83, 075440 (2011).
[4] R. Sakano, A. Oguri, T. Kato, and S. Tarucha, Phys. Rev. B 83,
241301(R) (2011).
Authors
R. Sakano, M. Ferriera, T. Arakawab, T. Hatac, K. Kobayashib, Y.
Teratanid, and A. Ogurid
aUniversité de Paris-Sud
bOsaka University
cTokyo Institute of Technology
dOsaka City University

8

ISSP Activity Report 2017

A quantum resonant diode is a device that filters theelectron momentum perpendicular to the quantum well.
Combined with the energy conservation, this restricts theelectrons which can tunnel through the device into a circle
on the Fermi surface in the source. The momentum selection may lead to spin selection due to spin-momentum
locking via strong spin-orbit interaction (SOI). This can beachieved, for example, in a series connection of two quantum
wells with opposite sign Rashba SOI coupling constants toeach other [1]. However this device does not have practicalmeaning because Rashba-type SOI does not have in-planeanisotropy and without in-plane selection of momentum, thedevice does not work as a spin-filter. Now, if Dresselhaustype SOI co-exists, the in-plane symmetry of the system
lowers and the device can have bi-directional spin-filtering
effect.
Here we have realized such a device of double quantum
well with n-p-n type doping, which provides opposite sign
Rashba SOI for the two quantum wells. The materials are
zinc-blende InGaAs quantum wells and AlInAs barriers
lattice matched to a (001) InP substrate. Hence the system
has a Dresselhaus SOI lacking the inversion symmetry. On
top of the resonant diode layers, an iron single crystal withbody-centered cubic (bcc) lattice structure is deposited.
The left panel of Fig. 1 shows the differential resistanceas a function of bias voltage in negative bias range. Negative
resistances appear at two resonant energies as double dipsreflecting the double well avoided crossing. Around theorigin of the I-V characteristics, no trace of Fe magnetization
appears in the in-plane field magnetoresistance. Just above
E1 resonance, hysteretic magnetoresistance (MR) shown in
the right panel of Fig. 1 appears. The lineshape resembles
to that of so called anisotropic magnetoresistance (AMR)
suggesting that the lineshape itself has the same origin, thatis the magnetic domain formation in the Fe layer. However,
the amplitude in the resistance is far above the AMR in Fe.
The left panel of Fig. 2 shows the MR for the field down
sweep in color plot versus the plane of field strength and. As shown in the polar plot at
directional angle fromthe right, the anisotropy apparently reflects the symmetry of
the Dresselhaus SOI while the coercive force as observed in
the width of MR, reflects the four-fold bcc symmetry of the
Fe layer. All the observations indicate the resonant double

Fig. 1. Left: Differential resistance of an InGaAs double quantum wellresonant diode as a function of source-drain negative bias voltage.
E1 and E2 correspond to the resonant energy levels. Right: Hysteretic
in-plane magnetoresistance appeared above the resonant level E1. The. Blue and red lines correspond to down
field direction is along
and up field sweeps respectively.

Fig. 2. (a) An asymmetry distribution of |Ψ|2 generated by interfacial
electric field. Purple line and blue line show the |Ψ|2 under smaller andlarger electric field, respectively. Green line show electrostatic potential
V. (b) Absolute value of αR estimated by the experiment and the calculation in different NM/Bi2O3 interfaces as a function of |ΔΦNM-Bi2O3|.
Fig. 2. Left: Color level plot of the magnetoresistance as a function offield strength and angle from [110]. The sign is reversed around [100](45º) and [010] (90º). Right: Polar plot of magnetoresistance amplitude
for the in-plane field direction.

and −0.09 eV·Å for NM = Al, Cu, Ag and Au, respectively.
The Rashba parameter αR can be described as,

well diode is working as an in-plane spin filter caused by the
combined effect of Rashba and Dresselhaus SOIs.

(1)

Reference[1] T. Koga, J. Nitta, H. Takayanagi, and S. Datta, Phys. Rev. Lett. 88,
126601 (2002).
Authors
T. Nakamura, Y. Hashimoto, and S. Katsumoto

Clear Variation of Spin Splitting by
Changing Electron Distribution at
Non-magnetic Metal/Bi2O3 Interfaces
Otani Group
Edelstein effect, the spin-to-charge current interconversion at interfaces [1], has attracted much attention. An
efficient interconversion at Cu/Bismuth oxide (Bi2O3) interface has been discovered [2, 3], which is attributed to a large
Rashba splitting in the electronic state at the metal/oxideinterface (see Fig. 1 (1)). However, the guiding principle ofdesigning the metal/oxide interface with large Rashba splitting for the efficient conversion is missing. In this study, we
report strong non-magnetic (NM) material dependence ofspin splitting at NM/Bi2O3 interface and discuss the origin of
the NM dependence with first-principles calculations.
We employed spin pumping technique to inject spincurrent into the NM/Bi2O3 (NM = Al, Cu, Ag, Au) interface. The injected spin current is converted to charge current
by the inverse Edelstein effect (spin-to-charge conversion
at the interface, see Fig. 1 (b)). We evaluated the conversion coefficient and the Rashba parameter αR which determines the splitting in momentum between spin-up and spindown electrons. The evaluated αR are −0.055, −0.25, +0.15

2 ∂V
αR = − ∫ − |Ψ |2 dz,
c2 ∂z

where c, ∂V/∂z and | Ψ |2 are the speed of light, potential gradient and electron density distribution, respectively. Schematic illustration of V and | Ψ |2 at NM/Bi2O3
interfaces based on our ab-initio calculation is shown in
Fig. 2 (a). | Ψ |2 can be modulated by the out-of-plane electricfield Einter at the interface. Note that Einter originates fromwork function difference ΔΦNM-Bi2O3 between NM andBi2O3. The asymmetry feature of | Ψ |2 which depends on
Einter and ΔΦNM-Bi2O3 should be important for the magnitude
and the sign of αR.
Figure. 2(b) shows |α R | estimated by experimentand calculation in different NM/Bi 2O 3 as function of|ΔΦNM-Bi2O3|. |αR| decreases as |ΔΦNM-Bi2O3| increases andthe trend of calculated |αR| is in good agreement with theexperiment. This trend can be explained as follows (seeFig. 2 (a)). | Ψ |2 is strongly localized near NM nuclei when
Einter is small, while | Ψ |2 could be shifted from nuclei anddelocalized when Einter is large. The steepest ∂V/∂z is locatednear NM nuclei. Thus, larger Einter (larger |ΔΦNM-Bi2O3|)
gives smaller integral in Eq. (1). The opposite sign of αR
between Ag/Bi2O3 and other interfaces may be explainedby different sign of ΔΦNM-Bi2O3 at Ag/Bi2O3 from others.
Assuming that Ag/Bi2O3 and Cu/Bi2O3 interfaces have
similar hybridization state, the opposite direction of Eintermay shift the | Ψ |2 to different side of NM or Bi2O3 and cause
the sign change of the integral.
We found that the asymmetry feature of | Ψ |2 which canbe modulated by ΔΦNM-Bi2O3 results in strong NM dependence on αR. Our study suggests that control of interfacial
electron distribution by changing the difference in work
function across the interface may be an effective way to tune
the magnitude and sign of Rashba splitting and the spin-tocharge current interconversion at interface.
References[1] J. C. R. Sánchez et al., Nat. Commun. 4, 2944 (2013).
[2] S. Karube, K. Kondou, and Y. C. Otani, Appl. Phys. Express 9,033001(2016).
[3] J. Kim, Y. T. Chen, S. Karube, S. Takahashi, K. Kondou, G. Tatara,
and Y. Otani, Phys. Rev. B 96, 140409(R) (2017).
Authors
H. Isshiki and Y. Otani

Fig. 1. (a) Rashba spin splitting at NM/Bi2O3 interface. (b) Schematicof spin-to-charge conversion at the NM/Bi2O3 interface. A spin current
is injected from the Py layer into the NM/Bi2O3 interface, and thenconverted to the charge current via the inverse Edelstein effect.

ISSP Activity Report 20179

Modulation of Electron-Phonon
Coupling in One-DimensionallyNanorippled Graphene
Komori GroupElectron-phonon coupling plays various roles in solids
such as inducing phase transitions and electron energy relaxation. In graphene, it is actually one of the dominant sourcesof the energy relaxation, and can be locally detected bytunneling spectroscopy with scanning tunneling microscopy
as an increase of the tunneling current at the absolute valueof the sample-bias voltage corresponding to the phonon
energy through an inelastic tunneling (IET) process [1]. We
have studied local electron-phonon coupling of a one-dimensionally (1D) nanorippled graphene (3.4 nm period) [2] .
The sample was prepared on a vicinal SiC(0001)
substrate by thermal decomposition in an Ar atmosphere.
Local atomic and electronic structures of the graphene werecharacterized using scanning tunneling microscopy/spectroscopy (STM/STS), and the phonon signals were locallydetected by IET spectroscopy.
Figure 1 shows STM images of the surface, which
consists of terraces and macrofacets of 27° off from the(0001) surface. The macrofacet surface is covered bycontinuous graphene with 1D periodic undulation. The 1D
super periodicity of the graphene is evidenced by satellite
band signals in the angle-resolved photoemission spectroscopy (ARPES) images of the graphene Dirac band fromthe macrofacet shown in Fig. 2(a). ARPES signals from thesecond-layer graphene were clearly observed using 40.8 eV
photons as in Fig. 2 (b). Thus, the interface between surface
graphene and the SiC substrate consists of alternate nanoribbons of graphene and the carbon buffer layer.
In the STS measurement, we observed IET signals dueto phonons in the vertical direction of the graphene plane.
The signal intensity periodically oscillates in the 1D undulation direction of graphene with the same periodicity. Thismeans that the intensity of the inelastic scattering due to theelectron-phonon interaction oscillates in the tilting directionof the macrofacet. Since the STM image of the graphenesurface looks uniform, we conclude that the IET intensity
oscillation is attributed to the subsurface interface layer.
The tunneling electrons are easy to move from the surface
graphene to the second layer graphene nanoribbon, but not

Fig. 1. STM images of graphene grown on a vicinal SiC(0001)
substrate. (a) Wide image indicating terrace and macrofacet structure of the substrate. 1D undulation can be seen on the macrofacets(b) Graphene honeycomb lattice on the terrace. (c) 1D periodicallyundulated graphene on the macrofacet.

10

ISSP Activity Report 2017

Fig. 2. ARPES spectra using 49 eV (a) and 40.8 eV (b) photons. Four
replica bands are seen as well as the true graphene Dirac band in (a).
The separation of the bands is consistent with the period of the 1D
undulated graphene. Using 40.8 eV photons, the signal from the subsurface graphene nanoribbons was detected in (b).

to in the buffer layer because of the long interlayer distance.
Due to this difference, the probability that tunnel electronsinteract with the phonon system is larger on the buffer layer.
References[1] C.-H. Kim et al., Nature Phys. 4, 213 (2008).
[2] K. Ienaga et al., Nano. Lett. 17, 3527 (2017).
Authors
K. Ienaga, T. Miyamachi, K. Yaji, K. Fukumaa, A. Visikovsliya, S.
Tanakaa, and F. Komori
aKyushu University

Orbital Ordering Visualized by
Scanning Tunneling Microscopy
Hasegawa Group
Orbital-related physics attracts growing interest in
condensed matter research and there have been reported
topics ranging from orbital orders and colossal magnetoresistance to various non-trivial new phenomena, such as
superconductivity mediated by orbital fluctuations, orbital
Kondo effect, and ordering of multipole moments. However,orbital sensitive probes have so far proved quite limited andthere has been no direct access to the real-space form of
the orbitals. On the other hand, recent progress of scanningtunneling microscopy (STM) enables the orbital-selective
tunneling depending on the tip-sample distance (TSD). Here,
we utilize the orbital sensitivity of STM to investigate thesurface of the well-known heavy fermion superconductor
CeCoIn5 and successfully unveil a surface-assisted cobalt
d-orbital order with the support of first principles calculations [1]. Our finding suggests that the surface-assisted
orbital ordering could be ubiquitous in transition metaloxides, heavy fermion superconductors, and other materials
but has been overlooked.
Our target material CeCoIn5 is naturally born at thequantum critical point having the unconventional d-wave
superconducting phase below the critical temperature TC =2.3 K. The compound has a tetragonal structure composedof three different layers, cerium (Ce)-indium (In), In, andcobalt (Co) layers, stacked in the order of CeIn-In-Co-InCeIn along the c axis as shown in the left panel of Fig. 1. The
second highest critical temperature among heavy fermion
superconductors and the availability of high-quality single

major relevance not only in heavy fermion physics but also
in the broad range of condensed matter physics and materialscience. Although we have yet to clarify this, there could
very well be links between this orbital order and the bulk
properties of the compounds. Applying this technique to theother compounds that have been investigated heavily but still
poorly understood, such as URu2Si2, we might find a new
avenue to explore unsolved mysteries.

Fig. 1. (left panel) Schematic of the tetragonal crystal structure of
CeCoIn5 with dxz-dyz orbital order at the topmost cobalt plane. (righttop panel) Overview of a typical cleaved surface in this study. Narrowterraces are separated by a step of the unit cell along c axis. The
topographic images are colorized with their derivatives to emphasize
the atomically resolved lattice structures. (right-bottom panel) Typicalatomically resolved STM image taken on the surface.

crystals make this compound the most investigated heavy
fermion superconductor.
We cleaved this compound in ultra-high-vacuum condition and measured with low-temperature STM. The right-top
panel of Fig. 1 is a typical overview image of the Co-terminated surface of CeCoIn5. Atomically-flat terraces are
separated with steps whose height are the unit-cell size along
the c axis. In the normal tunneling conditions; when the tip
is far away from the surface, spherical-shaped cobalt atoms
are visualized on the square lattice as shown in the rightbottom panel of Fig. 1. This atomic shape is coming fromstates derived from the Co 4s orbital, which has the longer
decay into the vacuum than the 3d orbitals. By decreasing
TSD extremely to be sensitive to 3d orbitals, we witness
drastic changes of the Co atomic shapes as shown in Fig. 2.
The Co atomic shape changes from the spherical shape to theelongated dumbbell by decreasing TSD. The elongated directions are the [100] or the [010] directions, which alternate
between the adjacent atomic sites. This observation is well
reproduced with first principles calculations (the right side of
the right panel) and interpreted as the surface-assisted dxz-dyz
orbital ordered state.
This surface-assisted orbital order has been overlookedby surface insensitive measurement techniques and even by
STM. Since we have experience in STM measurements withvery small tip-sample distances [2], which is the first experiment successfully achieving point contact imaging witheven smaller tip-sample distances than the present work, wewere able to uncover this new phenomenon, achieving thefirst direct visualization of orbital order in real space. The
surface-assisted orbital order is a new concept, but it is not
exclusive for heavy fermion compounds. This kind of orbital
order should show up in many other compounds containing
orbital degrees of freedom in bulk. Therefore, our finding has

Fig. 2. STM images of Co-terminated surface with large and small
tip-sample distances with corresponding calculated density-of-statemappings based on first principles calculations. The experimental
observations are well reproduced with the calculations demonstrating
the emergence of dxz-dyz orbital order on the surface.

References[1] H. Kim, Y. Yoshida, C-.C. Lee, T.-R. Chang, H.-T. Jeng, H. Lin,Y. Haga, Z. Fisk, and Y. Hasegawa, Science Advances 3, eaao0362(2017).
[2] H. Kim and Y. Hasegawa, Phys. Rev. Lett. 114, 206801 (2015).
Authors
H. Kim, Y. Yoshida, C.-C. Leea, T.-R. Changb, H.-T. Jengc, d, H. Lina,
Y. Hagae, Z. Fiske, f, and Y. Hasegawa
aNational University of Singapore
bNational Cheng Kung University
cNational Tsing Hua University
dInstitute of Physics, Academia Sinica
eJapan Atomic Energy Agency
fUniversity of California, Irvine

Hole Trapping in SrTiO3
Lippmaa Group
Well-known perovskite titanates such as SrTiO3 andBaTiO3 generally exhibit n-type semiconductor behavior due
to the prevalence of oxygen vacancies that can form undercommon synthesis conditions. Each oxygen vacancy donates
two electrons and in SrTiO3, for example, a metallic state
appears at a relatively low carrier density of about 1017 cm-3.
Besides oxygen vacancies, cation vacancies may also formin titanates. In particular, formation of A-site cation (Sr, Ba)vacancies is energetically favorable and leads to effective
acceptor doping. It is known experimentally that the Fermi
level in intrinsic SrTiO3 is close to the conduction band
bottom, i.e., the material is effectively an n-type wide-gap
semiconductor, which means that compensation by acceptortype cation vacancies is not observed and the cation defectdensities must be much lower than 1017 cm-3, which can beignored in conventional transport analysis.
The situation is very different when optoelectronic
applications are considered, where photogenerated carrier
mobility, trapping, and lifetime are important parameters.
The presence of cation defects needs to be considered
because the presence of acceptor states close to the topof the valence band can influence hole trapping and thus
the recombination rate of photogenerated non-equilibrium
carriers. Unfortunately, typical optical absorption or photoelectron emission spectroscopic techniques cannot detectsuch low-density vacancy states. We have therefore developed a technique based on measuring the infrared quenchingeffect on photocurrent, which is illustrated in Fig. 1. Carriers
are generated by ultraviolet light across the band gap and thephotocurrent is measured as a function of temperature. The
magnitude of the photocurrent is determined by the recombination rate of photocarriers, which depends on whether holes
are trapped or delocalized. Hole trapping normally occurs
at low temperatures in the presence of acceptor defects,
reducing the recombination rate and increasing the photocurrent, as can be seen at around 35 K in Figs. 1(a,b). If a crystal
is illuminated with ultraviolet and infrared light at the sametime, the holes trapped at so-called sensitizing centers can

ISSP Activity Report 201711

Gas Exposure Effects on Monolayer
Pentacene Field-Effect Transistor
Studied by Using Non-Invasive
Liquid-Metal GaIn Probes
Yoshinobu Group

Fig. 1. Photocurrent in SrTiO3 as a function of temperature under ultraviolet (UV) or simultaneous ultraviolet and infrared (UV+IR) excitationfor (a) bulk crystal and (b) thin film. Infrared quenching of photocurrent can be seen below 35 K. (c) Energy level diagram illustrating the
localization of photogenerated holes. Photocurrent quenching occurs
when the trapped holes are released by infrared light illumination.

be detrapped and the photocurrent drops due to the increased
recombination rate. The energy level diagram illustrating
this mechanism is shown in Fig. 1(c). The delocalizationof holes depends on the depth of the acceptor state, E1, andthe temperature. For Sr vacancy defects in SrTiO3, thermal
detrapping occurs between 30 K and 90 K, depending on
how the crystal was grown. The value of E1 can be obtainedby fitting the photocurrent temperature dependence close to
the infrared quenching transition temperature. For the SrTiO3
samples used in this study, E1 is about 60 meV.
Bulk SrTiO3 crystals are grown by the Verneuil method
and always contain Sr vacancies due to the high crystal
growth temperature. Thin films are usually grown at much
lower temperatures and it is thus not clear if the Sr vacancy
density would be similar to bulk crystals or not. As shownin Fig. 1(b), the photocurrent behavior of a thin film grown
at 1200°C is indeed similar to the bulk behavior and theinfrared quenching effect can be clearly observed. No
infrared quenching is observed in films grown at lower
temperatures, but the photocurrent is also much lower due tohigher density of lattice defects and strong carrier trapping.
The work shows that attempts to improve titanate latticequality by increasing the crystal growth temperature can becounter-productive in optoelectronic applications due to thespontaneous formation of cation vacancies at higher temperatures. We demonstrate that photocurrent measurement withmultiple light sources can be a simple technique for verifying
the presence of cation defects that can be difficult or impossible to detect by other spectroscopic techniques [1].

The interactions of gaseous molecules with organic field
effect transistors (OFETs) play a crucial role in the electronictransport property. Chemical interactions including oxidization are a serious issue for degradation of long-term stabilityof organic devices. Physical adsorption can also modify
electronic states of OFETs. Gaseous molecules may diffuse
into OFET film through defect sites such as grain boundaries, resulting in a change in the film structure and/or theformation of a gap state.
Recently, we have developed the non-invasive liquidmetal GaIn four-probe measurement method for the FET
properties of organic monolayer and thin films [1, 2]. In
this Research Highlight, we report that the electrical transport property of monolayer pentacene is highly sensitive toa small amount of exposure to O2, N2 and Ar gases using
independently-driven four GaIn probes [2]. Liquid metal
GaIn probes have been used as non-invasive conductivity
electrodes for monolayer OFET films in a vacuum chamber(Fig. 1). We carried out the fabrication of monolayer pentacene and the four-probe measurement without exposure
to atmospheric air. Four GaIn probes were used in situ tomeasure conductivity in the channel separately from theoverall characteristics including contact resistance at theelectrode probes [3].
The experimental results show that O2 exposure of 1 L(10−6 Torr s) reduces mobility to 8% of the original value
in the monolayer film, and the reduction is irreversible atroom temperature, i.e., mobility does not recover its originalvalue after the evacuation of gaseous molecules (Fig. 2).
Since chemically inert gases of N2 and Ar also reduce themobility, physisorption of gaseous molecules should be
involved in these gas exposure effects. For a 3 ML pentacene
film, O2 exposure also reduces its mobility, but the mobility
is saturated at 70% of the original value between 10 L to O2

References[1] N. Osawa, R. Takahashi, and M. Lippmaa, Appl. Phys. Lett. 110,
263902 (2017).
Authors
N. Osawa, R. Takahashi, and M. Lippmaa

Fig. 1. (a) Optical microscope image of four GaIn probes contactedwith 1 ML pentacene. (b) Schematic of the electrical circuits.

12

ISSP Activity Report 2017a polarization rotation. This magneto-optical Kerr effect(MOKE) has been intensively studied in a variety of ferroand ferrimagnetic materials because it provides a powerfulprobe for electronic and magnetic properties as well as forvarious applications including magneto-optical recording.
Recently, there has been a surge of interest in antiferromagnets (AFMs) as prospective spintronic materials forhigh-density and ultrafast memory devices, owing to theirvanishingly small stray ﬁeld and orders of magnitude fasterspin dynamics compared to their ferromagnetic counterparts[1]. In fact, the MOKE has proven useful for the study andapplication of the antiferromagnetic (AF) state. Although
limited to insulators, certain types of AFMs are known to
exhibit a large MOKE, as they are weak ferromagnets due
to canting of the otherwise collinear spin structure [2]. In
the fully compensated collinear AFMs, where the MOKE
is usually absent, quadratic magneto-optical effects such as
the Voigt effect can be useful to determine the Néel vector[3]. On the other hand, recent theoretical and experimental
progress has revealed that systems such as certain spin
liquids and non-collinear AFMs can exhibit a large anomalous Hall effect (AHE) in zero applied magnetic field despitea vanishing magnetization [4, 5]. Because the AHE has thesame symmetry requirements as the MOKE [6], it is possiblethat the same class of AFMs may exhibit a Kerr rotation.
Thus, the recent experimental discovery of a large AHE in
the non-collinear AFM Mn3Sn [5], which is recently reported
to be the first example of a Weyl magnet [7], as well as its

Fig. 2. Four-probe I−V curves (a) before and (b) after O2 exposure
measured with the probe alignment shown in Figure 1(a). (c) and (d)Inverse of four-probe resistance 1/R4p as a function of gate to channel
bias VGc1, respectively. (e) Estimated mobility and (f) threshold voltage.

atmosphere. Thus, we assume that physical adsorption of
gaseous molecules is important for the initial gas exposure
effects, because chemically inert gases of N2 and Ar also
reduced the mobility in monolayer pentacene. Taking thesefindings together with the results of photoelectron spectroscopy and atomic force microscopy measurements, thereduction in mobility can be attributed to the physisorptionof gases at grain boundaries formed by the coalescence ofpentacene monolayer islands [2].
References[1] S. Yoshimoto, K. Takahashi, M. Suzuki, H. Yamada, R. Miyahara,
K. Mukai, and J. Yoshinobu, Appl. Phys. Lett. 111, 073301 (2017).
[2] S. Yoshimoto, R. Miyahara, Y. Yoshikura, J. Tang, K. Mukai, andJ. Yoshinobu, Organic Electronics 54, 34 (2018).
[3] S. Yoshimoto, T. Tsutsui, K. Mukai, and J.Yoshinobu, Rev. Sci.
Instrum. 82, 093902 (2011).
Authors
S. Yoshimoto, R. Miyahara, Y. Yoshikura, J. Tang, K. Mukai, andJ.Yoshinobu

Large Magneto-Optical Kerr Effectand Imaging of Magnetic Octupole
Domains in the Non-Collinear
Antiferromagnetic Metal Mn3Sn
Nakatsuji Group
When a polarized light beam is incident upon thesurface of a magnetic material, the reﬂected light undergoes

Fig. 1. (a) Cluster magnetic octupole ordering of Mn3Sn. Large red(small dark grey) and large transparent orange (small transparent grey)
spheres represent Mn (Sn) atoms forming kagome planes at z = 0
and 1/2, respectively. The Mn magnetic moments (arrows) lie in the(0001) plane and form an inverse triangular spin structure. Different
colored arrows represent three sublattices. The spin structure on the
kagome bilayers can be considered as ferroic order of cluster magnetic
octupoles. (b) Field B dependenceof the polar –magneto-optical
Kerr
––
–
rotation angle θK for the (2110) plane in –B– || [2110]. (c) Evolution of
the antiferromagnetic
domains of the (2110) plane as a function of––
B || [2110] (−21 mT ≤ B ≤ 21 mT). The imaging area is 25 μm × 50 μm.
Grey and black regions correspond to positive and negative valuesof the MOKE signal. (d) Schematic illustration of two regions withdifferent MOKE image contrasts (grey/black areas) due to opposite
signs of the Kerr angles θK,−/+, corresponding to two types of cluster
magnetic octupole domains that have inverse triangular spin structureswith opposite spin directions within the (0001) plane. The two regions
should be separated by a domain wall (yellow area).

ISSP Activity Report 201713

soft response to a magnetic field give promise for a potentially large MOKE character.
Mn3Sn is a hexagonal antiferromagnet (space group:
P63/mmc), which has the ABAB sequence of the Mn kagome
layer along [0001] and exhibits the non-collinear AF spin
structure below the Néel temperature of TN ~ 430 K [4].
This three-sublattice AF state on the kagome bilayers can beviewed as “ferroic ordering of cluster magnetic octupoles”(Fig. 1(a)) [8]. In addition to this dominant order parameter,
the moments cant slightly in the plane to produce a small
net ferromagnetic (FM) moment of ~0.002 μB/Mn withinthe (0001) plane. Although the subdominant FM order is
not responsible for the AHE [4] (and MOKE as we discuss
below), it is essential (together with concomitant weakin-plane anisotropy) for magnetic field to control the AF
spin structure. This is demonstrated, for example, by the sign
reversal of the AHE using a small applied field of B ~ 15
mT within the (0001) plane, corresponding to the in-planerotation of the Mn moments.
We carried out field-swept measurements of the polar––
MOKE using the Mn3Sn (2110) plane with a λ = 660 nm
linearly polarized laser at 300 K. Significantly, a large zerofield Kerr rotation angle θK ~ 20 mdeg and a clear square––hysteresis loop are observed in B || [2110] (Fig. 1(b)), whichis comparable to the case for ferromagnetic materials. The
coercive field BC ~ 12 mT is consistent with the hysteresis curve obtained in ρH(B), indicating that the magnetic
properties at the surface are nominally identical to those in
the bulk [4]. Moreover, our polar MOKE spectroscopy andfirst-principles calculation for the frequency dependence ofthe Kerr rotation θK(ω) have clariﬁed that ferroic orderingof magnetic octupoles in the non-collinear Néel state may
cause a large MOKE even in its fully compensated AF
state. The large MOKE signal without spin magnetization
sharply contrasts with the previously known AF insulator
cases where weak ferromagnetism has been believed to be
essential for the presence of the MOKE. This large MOKE
further allows imaging of the magnetic octupole domains andtheir reversal induced by B. Figure 1(c) presents a series of––the polar MOKE images of the Mn3Sn (2110) plane under––
B || [2110] (− 21 mT ≤ B ≤ 21 mT) which obtained at the
points (i)-(iv) in Fig. 1(b). Here, grey and black colors correspond to positive and negative values of the polar MOKE––
signal parallel to the [2110] direction originating from thetwo types of the cluster magnetic octupole domain in Fig.
1(d). This is the first observation of domain reversal in an AF
metal and of magnetic octupole domain reversal by MOKE
microscopy [7]. The large MOKE observed in an AF metal
should open new avenues for the study of domain dynamics
as well as spintronics using AFMs.

aNational Institute of Standards and Technology
bUniversity of California, Berkeley
cRIKEN-CEMS
dTohoku University
eU.S. Naval Research Laboratory
fJohns Hopkins University
gThe University of Tokyo

Strongly Correlated Zero-Gap
Semiconductor Pr2Ir2O7
Nakatsuji GroupIn the field of the solid state physics, materials exhibiting
novel physical properties are vigorously explored. Zero-gap
semiconductors are one fascinating group of materials where
topological functionalities lead to high carrier mobility andthe quantum Hall effect. It is known that electrons behave as
if they are massless in materials such as graphene because of
the linear band dispersion near the point where the valence
and the conduction bands come in contact with each other.
For graphene, new phenomena were discovered one after
another and it became the subject of the Nobel Prize inPhysics in 2010. So far, the physics of zero-gap semiconductors have only been studied in materials where the interaction
between electrons is weak.
An example of a zero-gap structure is a Luttinger
semimetal with quadratic band touching whose band dispersion is parabolic near the band touching point as illustrated inFig. 1. It was predicted more than 40 years ago that materials
in a Luttinger semimetal state would show novel electronic
states because of the strong electronic correlations that are
unobtainable in conventional metals. However, in materials
known so far, such as α–Sn and HgTe, it has been difficult to
identify experimentally the effects of electronic correlations
because the effective mass of electrons is small and hence theelectronic correlations are weak.
To clarify the effect of the strong electronic correlations, we focused on Pr2Ir2O7 [1]. It is already known that
Pr2Ir2O7 is a Luttinger semimetal with quadratic band
touching and that the effective mass of electrons is about
6 times larger than the mass of the free electron in vacuum[2]. We therefore carried out a terahertz spectroscopy study
on the Pr2Ir2O7 thin films and observed a very large dielectric constant of about 180 at a temperature of 5 K as shownin Fig. 2 [3]. This value is several tens of times larger thanReferences[1] T. Jungwirth et al., Nat. Nanotech. 5, 231 (2016).
[2] F. J. Kahn et al., Phys. Rev. 186, 891 (1969).
[3] V. Saidl et al., Nat. Photon. 11, 91 (2017).
[4] Y. Machida et al., Nature 463, 210 (2010); H. Chen et al., Phys. Rev.
Lett. 112, 017205 (2014); N. Kiyohara, T. Tomita, and S. Nakatsuji,
Phys. Rev. Applied 5, 064009 (2016).
[5] S. Nakatsuji, N. Kiyohara, and T. Higo, Nature 527, 212 (2015).
[6] W. Feng et al., Phys. Rev. B 92, 144426 (2015).
[7] K. Kuroda and T. Tomita et al., Nat.Mater. 16, 1090 (2017).
[8] T. Higo, H. Man, D. Gopman, L. Wu, T. Koretsune, O. van ’t Erve,
Y. Kabanov, D. Rees, Y. Li, M.-T. Suzuki, S. Patankar, M. Ikhlas,
C. L. Chien, R. Arita, R. Shull, J. Orenstein, and S. Nakatsuji, Nat.
Photon. 12, 73 (2018).
Fig. 1. Band structure of a Luttinger semimetal, which is a zero-gap
Authors
semiconductor. The valence band, which is filled with electrons (blue
a
b
c,d
e
T. Higo, H. Man, D. Gopman , L. Wu , T. Koretsune , O. van ’t Erve , spheres) and the empty conduction band both have a three-dimensional
a
b
f
c,d
b
Y. Kabanov , D. Rees , Y. Li , M.-T. Suzuki , S. Patankar , M. Ikhlas, parabolic shape, and are in contact with each other at a single point
C. L. Chienf, R. Aritac,g, R. Shulla, J. Orensteinb, and S. Nakatsuji
close to the Fermi level.

14

ISSP Activity Report 2017ŝĞůĞĐƚƌŝĐĐŽŶƐƚĂŶƚ

^ĂŵƉůĞǁŝƚŚ&ĞƌŵŝůĞǀĞůĂƚϳ͘ϯŵĞs^ĂŵƉůĞǁŝƚŚ&ĞƌŵŝůĞǀĞůĂƚϭϭ͘ϵŵĞsdĞŵƉĞƌĂƚƵƌĞ;<ͿFig. 2. Temperature dependence of the dielectric constant. The
low-temperature value is several tens of times larger than that of known
zero-gap semiconductors (e.g. α–Sn and HgTe). The dielectric constantbecomes larger when the Fermi level approaches the band touching
point.

that of zero-gap semiconductors (e.g. α–Sn and HgTe)
known so far. Additionally, in a Luttinger semimetal state,
the dielectric constant is a measure of the scale of electronic
correlations. By using this fact, when the magnitude ofthe electronic correlations is estimated from the dielectric
constant, the scale of electronic correlations is about 2 ordersof magnitude larger than the kinetic energy.
We have thus demonstrated that electronic correlations are indeed very strong in a Luttinger semimetal withquadratic band touching. In the future, it is expected thatfurther understanding of the role of electronic correlations indetermining the physical properties of zero-gap semiconductors will lead to the creation of novel metallic states and newfunctional materials.
References[1] T. Ohtsuki, Z. Tian, A. Endo, M. Halim, S. Katsumoto, Y. Kohama,
K. Kindo, S. Nakatsuji, and M. Lippmaa, arXiv:1711.07813 (2017).
[2] T. Kondo, M. Nakayama, R. Chen, J. J. Ishikawa, E.-G. Moon, T.
Yamamoto, Y. Ota, W. Malaeb, H. Kanai, Y. Nakashima, Y. Ishida, R.
Yoshida, H. Yamamoto, M. Matsunami, S. Kimura, N. Inami, K. Ono,
H. Kumigashira, S. Nakatsuji, L. Balents, and S. Shin, Nat. Commun.
6, 10042 (2015).
[3] B. Cheng, T. Ohtsuki, D. Chaudhuri, S. Nakatsuji, M. Lippmaa, and
N. P. Armitage, Nat. Commun. 8, 2097 (2017).
Authors
T. Ohtsuki, B. Chenga, D. Chaudhuria, S. Nakatsuji, M. Lippmaa, and
N. P. Armitagea
aJohns Hopkins University

Large Anomalous Nernst Effect at Room
Temperature in a Chiral Antiferromagnet

Fig. 1. Anisotropic magnetic field dependence of the Nernst signal–––
Sji (i, j = x: [2110], y: [0110], z: [0001]) in Mn3Sn.

Mn3Sn is a metallic AFM crystallizing in the hexagonal
structure, with Mn atoms forming a kagome lattice in theab plane that is stacked along the c-axis. Below the Neeltemperature of 430 K, Mn spins undergo a transition froma paramagnetic state to a non-collinear, inverse triangularspin structure [2]. The orthorhombic symmetry of thismagnetic orders permits an exceedingly tiny in-plane spontaneous magnetization ~ 2mμB/Mn to appear, the direction ofwhich can be controlled by a small magnetic field of ~ 200
Oe. Experimentally, Mn3Sn exhibits large anomalous Hall
conductivity in this non-collinear phase, the first case for
AFM [3]. In this study, we measured magneto-thermoelectrictransport of two off-stoichiometric Mn3Sn single crystals
with slightly different compositions, Mn3+xSn1-x (x = 0.06
and x = 0.09). We found that for Mn3.06Sn0.94, the anomalous Nernst coefficient Szx is 0.35 μV/K at room temperature(Fig. 1) and reaches 0.6 μV/K at 200 K [4], comparable tothe maximum value measured for ferromagnetic metal [5].
This Nernst coefficient is around 100 times larger than what
we would naively expect based on the size of its magnetization (Fig. 2).
The anomalous Nernst coefficient Szx is governed by thetransverse thermoelectric conductivity αzx, which is related
to the Hall conductivity σzx through the Mott relation. From
this relation, we can infer that ANE can be enhanced whenthe Berry curvature takes a large value in the vicinity of EF.
First-principles calculations suggest the existence of Weylnodes around E ≈ EF + 60 meV at which the Hall conductivity peaks. Moreover, the Mn off-stoichiometry is predicted
to provide electron carriers that shift EF towards the locationof the Weyl nodes, which may account for the difference inthe magnitude and temperature dependence of the σzx and αzx

Nakatsuji GroupThe anomalous Nernst effect (ANE) is the thermoelectric counterpart to the anomalous Hall effect (AHE), thatis, when one applies thermal gradient to a ferromagnetic
conductor, spontaneous voltage drop will appear perpendicular to both the applied heat current and the direction of
the magnetization. In earlier studies, these two phenomena
have been considered to be proportional to the magnetization. However, modern theory of transport properties basedon Berry phase has opened up the possibilities of observing
anomalous transport effects in materials with zero net
magnetization, such as in antiferromagnets (AFM) [1].

Fig. 2. Magnetization dependence of the spontaneous Nernst signal|Sji | for various ferromagnets and Mn3Sn. References for each listed
materials can be found in [4].

ISSP Activity Report 201715

between the two measured single crystals.
From a practical standpoint, the anomalous Nernst effectmay become useful as the orthogonal orientation between thevoltage output and the input heat current allows the construction of thermoelectric module much simpler than the usual
pillar-like design utilizing the Seebeck effect. In spite of thesmall magnitude of the ANE observed in this material, ourstudy may provide a guide for the search of materials moresuitable for future thermoelectric power generation.
References[1] M.-T. Suzuki, T. Koretsune, M. Ochi, and R. Arita, Phys. Rev. B. 95(2017).
[2] T. Nagamiya, and Y. Yamaguchi, Solid State Commu. 42 (1982).
[3] S. Nakatsuji, N. Kiyohara, and T. Higo, Nature 527 (2015).
[4] M. Ikhlas, T. Tomita, T. Koretsune, M.-T. Suzuki, D. NishioHamane, R. Arita, Y. Otani, and S. Nakatsuji, Nat. Phys. 13 (2017).
[5] K. Hasegawa, M. Mizuguchi, Y. Sakuraba, T. Kamada, T. Kojima,
T. Kubota, S. Mizukami, T. Miyazaki, and K. Takanashi, Appl. Phys.
Lett. 106 (2015).
Authors
M. Ikhlas, T. Tomita, T. Koretsunea, M.-T. Suzukia, D. Nishio-Hamane,
R. Aritaa, Y. Otani, S. Nakatsuji
aRIKEN-CEMS

Effects of Pressure and Magnetic Field
on Superconductivity in ZrTe3:
Local Pair-Induced Superconductivity
Uwatoko GroupUp to now, the coexistence and competition between
charge density waves (CDWs) and superconductivity (SC)have attracted much attention in transition-metal di- andtrichalcogenides. Among these compounds, ZrTe3 shows thehighly anisotropic SC transition, where the resistance along
the a axis, Ra, is reduced at 4 K but those along the b axis,
Rb, and c' axis, Rc' are reduced at 2 K. This unusual behavior
can be explained by two scenarios, conventional superconducting fluctuation and SC induced by locally boundelectron pairs (local pairs). In the former, the reduction in
Ra is attributed to a fluctuation in the bulk SC enhanced by
the low dimensionality. In the latter, the transitions of Ra andRb,c’ correspond to filamentary (highly one dimensional: 1D)and bulk (3D) SC, which originate from the formation of
local pairs, namely bi-polarons, and Cooper pairs induced by
the transfer of the local pairs, respectively. However, at thismoment, it remains unclear which interpretation is acceptable.
In this work [1], to understand SC in more detail, we
discuss the influence of pressure and the magnetic field on
the SC, as determined via Ra and Rb measurements. In themeasurements, the samples with different current configurations were mounted on the same sample holder and pistoncylinder-type cell, and the data were simultaneously taken.
Figures 1 (a) and (b) show the Ra and Rb at variouspressures in the low temperature region, respectively. For
P = 0 GPa, the Ra drops to zero at 2.2 K, while the Rb
decreases to zero at 1.4 K. The highly anisotropic SC transitions are reflected by 1D and bulk nature of the SC. A P-T
phase diagram can be constructed from the data, as shown in
Fig. 1(c). Strikingly, the Tc of the bulk SC also decreases inthe same manner as that of the 1D SC. This means that theorigin of the bulk SC can be related to that of the 1D SC.
To investigate the connection between 1D and bulk SC

16

ISSP Activity Report 2017

Fig. 1. (a),(b): Temperature dependence of the Ra and Rb at variouspressures. (c): P-T phase diagram of ZrTe3. The blue and red triangles
are Tc obtained from the Ra and Rb measurements, respectively.

further, we show that the pressure dependence of Hc2 ofthe 1D SC is similar to that of the bulk SC. These similarities indicate that the origin of the bulk SC can be related
to that of the 1D SC. Moreover, in analysis of the excess
conductivity, our results are in good agreement with the 1D
Aslamazov-Larkin model rather than the 3D model, for boththe I configurations, suggesting that the conventional fluctuation theory is not appropriate for our data. These findings
favor the local-pair-induced SC scenario rather than conventional SC. According to the local-pair induction scenario,
1D SC is attributed to the formation of local pairs owing
to a peculiar electronic structure after the CDW transition.
The formation of the ordinary Cooper pairs in the bulk SC
is induced by the transfer of the local pairs in addition to
the 1D SC. This mixing of two kinds of SC, that is, theunconventional mechanism of the bulk SC increases thecomplexity of the fluctuation phenomena, which may explain
the unusual excess conductivity. Moreover, this picture isconsistent with the previous studies, such as anomalous
behavior of the specific heat [2].
References[1] S. Tsuchiya, K. Matsubayashi, K. Yamaya, S. Takayanagi, S. Tanda,
and Y Uwatoko, New J. Phys. 19, 063004 (2017).
[2] K. Yamaya, S. Takayanagi, and S. Tanda, Phys. Rev. B 85, 184513(2012).
Authors
S. Tsuchiya a , K. Matsubayashi b , K. Yamaya a , S. Takayanagi a ,S. Tandaa,c and Y. Uwatoko
aHokkaido University
bThe University of Electro-Communications
cCenter of Education and Research for Topological Science andTechnology, Hokkaido University

High-Tc Superconductivity in FeSe at
High Pressure: Dominant Hole Carriersand Enhanced Spin Fluctuations
Uwatoko GroupThe Fermi surface (FS) topology and its interplay withmagnetism have been considered key ingredients in under-standing the mechanism of the iron-based high-Tc superconductors. For the FeAs-based superconductors, the FS
typically consists of hole and electron pockets near the
Brillouin zone center and corners, respectively. As such, aninterband scattering between the hole and electron pockets
has been proposed as an important mechanism for electron
pairing in the iron-based superconductors, leading to ans± pairing state favored by the antiferromagnetic fluctuations. This picture, however, is challenged by the observed
distinct FS topology in the FeSe-derived high-Tc (> 30 K)
superconductors, including AxFe2-ySe2 (A = K, Cs, Rb, Tl),
(Li,Fe)OHFeSe, and monolayer FeSe film, in which only theelectron pockets are observed near the Fermi level. Therefore, the distinct FS topology between FeAs- and FeSe-basedmaterials has challenged current theories on a unified understanding of the mechanism of iron-based superconductors.
In contrast to electron-doping approaches, the applicationof high pressure does not introduce extra electron carriers,
yet can still enhance Tc of bulk FeSe from 8 K to 38 K near
6 GPa. Our recent high-pressure study on FeSe has shown
explicitly that the optimal Tc is achieved when the long-range
antiferromagnetic order just vanishes, reminiscent of thesituations seen frequently in the FeAs-based superconductors[1]. To make this connection, it is important to have information about the evolution of the FS under high pressure—a regime in which ARPES experiments are impractical, andwhere quantum oscillation measurements are challenging.
Alternatively, we measured the Hall effect under hydrostaticpressures up to 8.8 GPa with the cubic anvil cell technique togain further insights into the electronic structure evolution of
FeSe at high pressure.
The main results are summarized in the phase diagram ofFig. 1. Our results demonstrate that the electrical transport
properties of FeSe at high pressures with Tcmax = 38.3 K are
dominated by the hole carriers, which is in contrast withthe known FeSe-derived high-Tc superconductors that areusually heavily electron doped. In addition, we observed anenhancement of Hall coefficient RH near the critical pressure
where the optimal Tc is realized with a simultaneous suppression of the long-range magnetic order. This implies a strong
reconstruction of the Fermi surface due to antiferromagnetic
order, consistent with the ordering pattern driven by inter-Fig. 1. Phase diagram and Hall coefficient of FeSe. Temperaturepressure phase diagram of FeSe is superimposed by a contour plotof Hall coefficient RH, which is defined as the field derivative of ρxy,
RH ≡ dρxy/dH, at the zero-field limit at each temperature and pressure.
The structural (nematic) transition (Ts), pressure-induced magnetictransition (Tm), and superconducting (SC) transition (Tc) have been
determined by the resistivity measurements under pressure [1]. The
dashed curve is a guide for the eyes.

band scattering. Importantly, their results show a continuous
path to high-Tc superconductivity in chalcogenides without
electron doping.
Thus, our present work can be considered as a significant step forward in making a unified picture on the current
understanding of iron-based high-Tc superconductors, specifically by demonstrating that high Tc in FeSe can be achieved
with an electronic structure and other characteristics similar
to the FeAs-based high-Tc superconductors.
References[1] J. P. Sun, K. Matsuura, G. Z. Ye, Y. Mizukami, M. Shimozawa, K.
Matsubayashi, M. Yamashita, T. Watashige, S. Kasahara, Y. Matsuda,
J.-Q. Yan, B.C. Sales, Y. Uwatoko, J.-G. Cheng, and T. Shibauchi,
Nature Commun. 7, 12146 (2016).
[2] J. P. Sun, G. Z. Ye, P. Shahi, J.-Q. Yan, K. Matsuura, H. Kontani,
G. M. Zhang, Q. Zhou, B. C. Sales, T. Shibauchi, Y. Uwatoko, D. J.
Singh, and J.-G. Cheng, Phys. Rev. Lett. 118, 147004 (2017).
AuthorsJ. P. Suna, G. Z. Yea,b, P. Shahia, J.-Q. Yanc, K. Matsuurad, H. Kontanie,
G. M. Zhangf, Q. Zhoub, B. C. Salesc, T. Shibauchid, Y. Uwatoko,
D. J. Singhg, and J.-G. Chenga
aInstitute of Physics, Chinese Academy of SciencesbYunnan University,
cOak Ridge National Laboratory
dThe University of TokyoeNagoya University
fTsinghua University
gUniversity of Missouri

Pressure induced Bulk Superconductivity
in a Layered Transition-Metal
Dichalcogenide 1T-Tantalum Selenium
Uwatoko Group
Charge density wave (CDW) and superconductivity(SC) are two low-energy collective excitations in condensed
matter physics. The periodic electron density modulations of CDWs and the anisotropic energy gaps at Fermi
surface generates multiple commensal electronic orders,either compete or cooperate. The resultant electronic phaseFig. 1. T-P diagram and the colors describe the evolution of resistivity;
the residual resistivity ρ0 is estimated by fitting ρ = ρ0+ATn up to 20
K. The dashed red line, the red line, the triangle points represent thetrend of TCDW, Tconset, and ρ0; the parameters versus pressure: (c) the
exponent n, (d) Tczero and TcM, (e) ΔTc, (f) 4πχv (2K).

ISSP Activity Report 201717and shed light on the underlying superconducting mechanismin the relevant systems.
Reference[1] B. S. Wang, Y. Liu, K. Ishigaki, K. Matsubayashi, J. -G. Cheng,
W. J. Lu, Y. P. Sun, and Y. Uwatoko, Phys. Rev. B. (rapid) 95,
220501(R) (2017)
Authors
B. S. Wanga, K. Ishigaki, K. Matsubayashi, Y. Liua, W. J. Lua, Y. P.
Suna,b, J.-G. Chengc, and Y. Uwatoko
aInstitute of Solid State Physics, CAS
bHigh Magnetic Field Laboratory, CAS
cInstitute of Physics, CAS

Fig. 2. Phase diagram of 1T-TaSe2 in temperature, pressure, andcomposition. Here, the dρ/d T is the differential coefficient of resistivity.
The red dished line separates the CCDW and NCCDW and the triangle
symbols divide the negative and positive dρ/d T.

diagrams have been devoted extensive efforts by controllingexternal stimulations to reveal the intrinsic physics.
Layered transition-metal dichalcogenides (TMDs) havebeen studied for nearly 50 years, but the key factors on theinterplay of CDW and SC are far from clear. In one case, thesuperconducting transition temperature assumes a dome-likeshape close to the collapsed CDWs; while in other cases, Tcchanges insensitively and/or increases monotonously without
domes. In former, the superconducting dome resembles
that of unconventional SC neighboring quantum criticalpoint. One scenario is proposed that CDW fluctuation glues
superconducting pairs since CDW and SC originate from
Fermi surface instabilities and electron-phonon coupling.
Howbeit, an opposite scenario is argued that CDW is weakly
connected to SC (e.g., 1T-TaS2) in 1T-TMDs, and the domeshaped superconducting diagram is far from CDW, whichtally with the evidences of conventional single-gappeds-wave SC. Additionally, superconducting diagram and thecoexisting model of CDW and SC depends on tuning routes
even from the same starting point. Some argue that CDW and
SC coexist on a macroscopic scale in real space, while others
support that the insulating CDW domain walls coexist withsuperconducting interdomains. It implies that the SCs are
distinct in superconducting diagrams generated by different
parameters, and the coexisting model of CDW and SC isessential to understand the superconducting mechanism.
1T-TaSe2, with a higher commensurate CDWs transition temperature ~ 473 K and a larger unit-cell volume
compared to isostructural compounds, has attracted ourattention as a starting point to explore SC and reveal theinterplay of CDW instability and SC by pressure. In thiswork, we report a pressure-driven SC in the vicinity of
CCDW in TMDs 1T-TaSe2 by resistivity and ac susceptibility. The superconducting phase enters at 4.5 GPa and bulk
SC emerges along with the collapse of CCDW at a criticalpressure Pc ~ 6.5 GPa. Higher than Pc, Tc keeps increasing
linearly, without a dome-shaped superconducting diagramin our pressure range. Tc reaches ~ 5.3 K at 15 GPa. The
comprehensive analysis shows that electronic correlationsof CCDW phase open energy gaps, which prohibits coopers
pairing; while the superconducting channels and CCDW
domain wall coexist in three-dimensions above Pc. The
evolutions of Fermi surface and the softening of phononmodels under pressure are proposed to explain the monotone
increase of Tc. The findings reveal the interplay of CCDW
and SC in 1T-TaSe2 by a clean method viz. high-pressure,

18

ISSP Activity Report 2017

Bilayer Sheet Protrusions and Vesicle
Budding Induced by Chemical Reactions
Noguchi GroupIn living cells, membrane composition continuallychanges by lipid metabolism. However, the effects of
non-constant membrane composition on shape transformations of cells are not understood so well. We have studied
membrane shape transformations under hydrolysis andcondensation reactions using dissipative particle dynamics
simulation [1]. The hydrolysis and condensation reactions
result in the formation and dissociation of amphiphilicmolecules, respectively as shown in Fig. 1. Because thedissociated hydrophilic and hydrophobic molecules are
typically dissolved in surrounding fluids and embedded in
the bilayer, we refer to them as the hydrophilic solute (HS)and embedded oil (EO), respectively.
Asymmetric reactions between the inner and outerleaflets of a vesicle can transport amphiphilic molecules

Fig. 1. Top: Schematic picture of hydrolysis and condensation
reactions. Middle: Snapshots of bilayer sheet protrusions (BP) andbudding of vesicles. Bottom: Dynamic phase diagram of shape transformations for the increase rate of the amphiphilic molecular number
difference, ΔNamp = Namp, out - Namp, in between the inner and outerleaflets and the EO synthesis rate dNEO/dt at high viscosity (γ*sol =24.5) and low viscosity (γ*sol = 2) of the surrounding fluid at a low
reduced volume.

between the leaflets via EO diffusion. We consider high HS
density in the inner fluid of the vesicle and investigate how
the transport into the inner leaflet changes the membrane
shapes. We found that the resulting area difference between
the two leaflets induces bilayer sheet protrusion (BP) andbudding at low reduced volumes of the vesicles (see thesnapshots in Fig. 1), whereas BP only occurs at high reduced
volumes. The probabilities of these two types of transformations depend on the shear viscosity of the surrounding fluids
compared to the membrane as well as the reaction rates.
For high surrounding fluid viscosity, BP formation occurs
at high reaction rates, but for low viscosity, budding always
occurs before BP formation (see the bottom graphs in Fig. 1).
In the budding, the membrane mainly moves normal to themembrane surface, but sliding between two leaflets occurs
in BP formation. Thus, the viscosity of the surrounding
fluids affects budding more than it does BP formation, whilethe viscosity in the membrane affects BP formation more.
The inhomogeneous spatial distribution of the hydrophobic
reaction products forms the nuclei of BP formation, andfaster diffusion of the products enhances BP formation. Our
results revealed that adjustment of the viscosity is important
to control membrane shape transformations.
Reference[1] K. M. Nakagawa and H. Noguchi, Soft Matter 14, 1397 (2018).
Authors
K. M. Nakagawa and H. Noguchi

Structure of Critical Gel Clusters
Formed by Tetra-Functional Polymers
Shibayama Group
Critical gel clusters are polymer clusters about tobecome a gel. With a bit more reaction, the critical clusters
percolate the system and system changes from fluid “sol”
to solid “gel”. Polymer gels can be synthesized by various
chemical methods: radical polymerization of monomers andcrosslinkers, crosslinking the side groups of linear polymer
chains by cross-linkers or by irradiation of γ-rays, coupling
end-groups of star polymers, etc. Although there are manydifferent reaction schemes to synthesize gels and different
network structure are formed depending on the synthesis

Fig. 1. Schematic for preparation of critical clusters from two different
tetra-PEG units carrying mutual reactive end-groups. The excess red
polymers cover the surface of the clusters and the reaction automatically stops. With one addition blue units, the clusters will percolate
the system. Reprinted with permission from SANS Study on Critical
Polymer Clusters of Tetra-Functional Polymers, Xiang Li, Kazu
Hirosawa, Takamasa Sakai, Elliot P. Gilbert, and Mitsuhiro Shibayama,
Macromolecules 2017 50 (9), 3655-3661. Copyright 2018 American
Chemical Society.

Fig. 2. Scattering profiles of various critical clusters based on the 2D
sol-gel phase diagram (a, r=0.85; b, r=0.80; c, r=0.70; d, r=0.5). The
profiles of the dilution of each clusters-solution are also shown. The
blue curves show the fitting curves of the Bastide-Candau model for
scattering profiles of critical clusters solution with finite polymer
concentration. Reprinted with permission from SANS Study on Critical
Polymer Clusters of Tetra-Functional Polymers, Xiang Li, Kazu
Hirosawa, Takamasa Sakai, Elliot P. Gilbert, and Mitsuhiro Shibayama,
Macromolecules 2017 50 (9), 3655-3661. Copyright 2018 American
Chemical Society.

schemes, a set of universal scaling laws are commonly
observed near the gel point, including size-distribution,weight-averaged molecular weight, correlation length.
Although those scaling laws of critical clusters havealready been well studied, most of the studies only focusedon reaction-conversion-limited clusters (1D phase diagram).
The sol-gel phase diagram indeed has three variables: thepolymer (or monomer) concentration (φ), the crosslinker
density and the reaction conversion. The lack of studies
based on the multi-dimension phase diagram is due to poor
reproducibility in forming critical clusters, and difficultyin controlling the polymer concentration and crosslinker
density.
Recently, we have successfully synthesized a new type of
critical clusters by mixing two different types of tetra-armedpoly(ethylene glycol) polymers (tetra-PEGs) with mutual
reactive end-groups by offstoichiometric molar ratios (r, r =0.5 denotes equal stoichiometric ratio) (Fig. 1). By changing
the polymer concentration and the molar ratio of two tetraPEGs (= crosslinker density), we can easily draw a 2D-phase
diagram of the critical clusters. Here, we report the structureof these critical clusters studied by means of small angle
neutron scattering (SANS) [1-2].
Figure 2 shows the normalized scattering intensity(I/φ) for different critical clusters formed based on the
2D-phase diagram. The normalized scattering intensity(I/φ) converged at the q-range of the size of prepolymers(q > 0.1Å-1) because all the polymer clusters are formed
with the same prepolymers. The slight upper deviationof low concentration sample are due to the low couniting
statistics of scattered neutrons. In the q-range of the size
larger than a prepolymer (q < 0.1Å-1), the SANS profiles
are well reproduced by the Bastide-Candau model, which
is designed for the scattering of critical gel clusters at finite
concentration regime. The fractal dimension (Ds) of swollen
critical clusters and the size-distribution exponent (Fisher
exponent, τ) were estimated from the fitting parameters.
Ds was a unique value (= 2.0 ± 0.1) irrespective of preparation condition while the values of τ increased from 1.90 to
2.25 with deviating r from the stoichiometric ratio (r = 0.5),
suggesting that smaller polymer clusters tend to be formed

ISSP Activity Report 201719

in off-stoichiometric ratio. This study clearly shows that thefractal structure of the critical clusters is universal irrespective of the synthesized condition, while the size-distribution of critical clusters is a tunable parameter, which was
unexpected by the classical percolation theory.
References[1] X. Li, K. Hirosawa, T. Sakai, E. P. Gilbert, and M. Shibayama,
Macromolecules 50, 3655 (2017).
[2] K. Hayashi, F. Okamoto, S. Hoshi, T. Katashima, D. C. Zujur,
X. Li, M. Shibayama, E. P. Gilbert, U.-I. Chung, S. Ohba et al., Nat.
Biomed. Eng. 1, 0044 (2017).
Authors
X. Li and M. Shibayama

Dynamics of Alkylammonium-Based Ionic
Liquids with Plastic-crystalline Phases
Yamamuro GroupOne of the characteristic and interesting features ofionic liquids (ILs) is nanometer-sized structure (nanostructure). For example, imidazolium-based ILs (ImILs) havenanostructures consisting of the polar-domains with imidazolium rings and anions and the non-polar domains with alkylchains of the cations. We have revealed that the nanostructureis essentially the same as that of a liquid-crystalline (LC)phase [1-3, 5] and investigated the dynamics of ImILs bymeans of quasielastic neutron scattering (QENS) [1, 2, 4, 5].
Recently, Yamada et al. found that some of alkylammoniumbased salts, which are another popular ILs, have plasticcrystalline (PC) phases that are the counterparts to the LC
phase; i.e., the LC phase has an orientationally-ordered
positionally-disordered structure, while the PC phase has anorientationally-disordered positionally-ordered one.
We have measured the DSC, neutron diffraction (ND)
and QENS data of methyldiethylisopropyl-ammonium bis(trifluoromethylsulfonyl)imide (abbreviated as N1223’Tf2N)
and the methyl-ethylpropylisopropylammonium salt
(N1233’Tf2N) in a temperature range between 4 and 400 K.
The former cation is more spherical and non-chiral while
the latter more ellipsoidal and chiral. The DSC and ND
works revealed that both of two samples have, in the orderof deceasing temperature, liquid (L), PC1, PC2 and crystalline (C) phases; PC1 may be a normal isotropic PC phaseand PC2 an anisotropic PC phase where the cations undergo
more restricted rotations. The QENS data were collected in a

Fig. 2. Arrhenius plot of N1233’Tf2N and assignment of each relaxation
mode. The structure of N1233’ cation and possible intraionic and overallmotions are schematically shown in the inset.

time range between 0.1 ps and 10 ns by means of HFBS andDCS spectrometers in NIST, USA.
As a representative result, Fig. 1 shows the QENS data
for the PC1 phase of N1233’Tf2N which were obtained at
1.1 Å-1 and 280 K by using HFBS. The data for the PC andC phases were fitted to an elastic and two Lorentz functions,while those for the L phase to a KWW function. As shownin Fig. 1, the fittings were satisfactory for all Q and T dataof both N1223’Tf2N and N1233’Tf2N. Figure 2 shows the
Arrhenius plot of N1233’Tf2N. In a wide time-range covering
4 orders of magnitude, there are basically 4 relaxation modesin the PC phases and 3 modes in L and C phases. Fastertwo modes are almost continuous over whole temperature.
By analyzing the Q-dependence of the relaxation times andelastic incoherent structure factors (EISF), the relaxation
modes were assigned as shown in Fig. 2. The faster two (forthe L phase) or three (for the PC and C phases) modes areclearly of intraionic rotations. The slowest mode in the PC
phases is due to the spherical and/or uniaxial rotation. The
slowest mode in the L phase is the α relaxation consistingof coupled overall rotational and translational motions. A
similar mode assignment was performed for N1223’Tf2N.
Thus, our QENS work has clarified how the intra- andoverall ionic motions are activated through the sequential
phase transitions (L-PC1-PC2-C).
References[1] O. Yamamuro et al., J. Chem. Phys. 135, 054508 (2011).
[2] M. Kofu et al., J. Phys. Chem. B 117, 2773 (2013).
[3] F. Nemoto et al., J. Phys. Chem. B 119, 5028 (2015).
[4] M. Kofu et al., J. Chem. Phys. 143, 234502 (2015).
[5] F. Nemoto et al., J. Chem. Phys., submitted.
Authors
O. Yamamuro, M. Nirei, M. Kofua, M. Matsukib, T. Yamadab, and
M. Tyagic,daJ-PARCbKyushu University
cNIST
dUniversity of Maryland

Fig. 1. The experimental QENS spectrum (closed circles) of the PC1phase of N1233’Tf2N obtained by HFBS. The result of the fitting, afitted curve and each component, is also shown in the figure.

20

ISSP Activity Report 2017

Novel Magnetoelectric Phasein Multiferroic BiFeO3
Tokunaga Group
Simultaneous emergence of multiple “ferroic” orders,such as (anti)ferromagnetism, ferroelectricity, and ferroelasticity, brought about fruitful physics caused by non-trivial
coupling among various degrees of freedom in condensed
matters. Among numerous multiferroic materials, BiFeO3
is perhaps the most extensively studied because of its hugespontaneous electric polarization (PS) as well as high ferroelectric and antiferromagnetic ordering temperatures. Our
recent careful studies of magnetoelectric effects in highquality crystals of BiFeO3 revealed existence of novel
electric polarization (PT) normal to the PS that can becontrolled by magnetic and electric fields in a non-volatileway [1, 2]. These findings clarified that BiFeO3 will be
useful for non-volatile memory devices writable by electricfields, readable simply by measuring their resistance, andstable against external magnetic fields at least up to 4 T.
Emergence of PT suggests breaking of the three-foldrotational symmetry around PS. Although this kind of distortion was proposed by earlier experimental studies using a
synchrotron x-ray radiation facility [3], relation between
magnetic order and lattice distortion has been veiled. We
studied magnetostriction of a single crystal of BiFeO3 withusing a renewed capacitance dilatometer in pulsed magnetic
fields up to 55 T (Fig. 1(a)). The results clearly resolved
existence of slight (1/50,000) lattice deformation, which canbe controlled by applied magnetic fields in irreversible way
indicating ferroelastic nature of this material [4].
In addition to the irreversible behavior below 10 T,
we observed non-monotonic change in magnetostriction
between 10-15 T that suggests emergence of an intermediate phase between cycloidal and canted-antiferromagnetic
phases. This feature of the intermediate phase is also
observed in measurements of isothermal magnetization andelectric polarization [4]. The intermediate phase grows up
with increasing temperature as shown by shaded area in Fig.
1(b). According to a model calculation based on the standard
Hamiltonian for this material, conical antiferromagnetic
order as illustrated in Fig. 1(c) can be stabilized at a certain
parameter space. Field induced transition from the cycloidal
to this conical phase is expected to rotate the spin modulation

Fig. 1. (a) Magnetostriction of BiFeO3 single crystal at 300 K measured
with using the capacitance method. The insets show schematics of thecapacitance cell and applied magnetic field. (b) Isothermal magnetization curves at various temperatures between 150 K and 310 K. We
observed anomaly in the shaded area and assigned it as the intermediatephase. (c) Proposed spin order in the intermediate phase. This conicalantiferromagnetic state can be regarded as a superposition of thecycloidal state in the YZ plane and the canted antiferromagnetic state
within the XY plane.

vector from X to Y direction in Fig. 1(c). Our neutron experiment revealed that incommensurate spin modulation along
the X-direction in the cycloidal state becomes commensurate in the intermediate phase, which is consistent with our
expectation. The magnetoelectric effects in this intermediatephase is considerably larger than those in the other phases.
Our findings will open novel possibility in this well-known
material.
References[1] M. Tokunaga et al., Nat. Commun. 6, 5878 (2015).
[2] S. Kawachi et al., Appl. Phys. Lett. 108, 162903 (2016).
[3] I. Sosnowska et al., J. Phys. Soc. Jpn. 81, 044604 (2012).
[4] S. Kawachi et al., Phys. Rev. Mater. 1, 024408 (2017).
Authors
S. Kawachi, A. Miyake, T. Itoa, M. Matsudab, W. Ratcliff IIc, S.
Miyaharad, N. Furukawae, and M. Tokunaga
aNational Institute of Advanced Industrial Science and Technology(AIST)
bOak Ridge National Laboratory (ORNL),
cNIST Center for Neutron Research, NIST,dFukuoka University,
eAoyama Gakuin University

Magnetostriction Measurements up to 190 T
Y. Matsuda and Kobayashi Groups
Magnetic field is a unique parameter that directly acts on
the spin, orbital angular momentum and phases of wavefunction of electrons in solids. High magnetic field of 100 Troughly corresponds to 100 K in energy scale. Therefore,
it is expected that novel state of matter emerges under highmagnetic fields, besides being just a controlling parameterof matter. Researches using non-destructive pulsed magnetic
fields has been greatly successful in the last several decades
both in magnet technique and measurement techniques. On
the other hand, despite the fact that the ultra-high magnetic
fields well above 100 T have been available using destructive pulse magnets in ISSP since 1980s, the deepening ofcondensed matter physics using those destructive pulse
magnets is still to come. It is due to the limited space andtime of the generated ultrahigh magnetic fields that is making

Fig. 1. (a) Schematic drawing of optical filter method for FBG peakdetection (b) Schematics of developed FBG and optical filter basedmagnetostriction measurement system.

ISSP Activity Report 201721

the measurement under ultrahigh magnetic field generated
with destructive pulse magnet because the pulse duration is
only a few micron seconds. As a light source, a mode-locked
Er-doped optical fiber laser is utilized as shown in Fig. 1(b).
This enables one to use the modulated measurement which ismore robust against noises.
We have confirmed that we are able to measure magnetostriction of LaCoO3 up to 150 T as shown in Figs. 2(a) and2(b) [1, 2], and CaV4O9 up to 190 T with the best resolutionof 2.0 × 10-5 as shown in Figs. 3(a), 3(b) abd 3(c). Using
the technique with the electromagnetic flux compression
technique generating magnetic field of above 500 T is underway. Also, we have applied the developed FBG based strain
measurement system to non-destructive pulse magnets,
where we have been successful in measuring the magnetostriction of volborthite with the resolution of 1.0 × 10-6[3]. The FBG based magnetostriction study under ultrahighmagnetic field for the valence fluctuation system, quantum
spin system, spin-crossover systems are being carried out.
Fig. 2. (a) FBG signal from LaCoO3 at 7 K up to 150 T whose pulse
duration is 7 μs. (b) Magnetostriction of LaCoO3 at 7 K up to 150 T
obtained from the above data.

various solid state measurements difficult such as resistivity,
magnetization and others.
In the present study, we report the achievement of themeasurement of magnetostriction which is one of the macroscopic measure that was impossible so far under ultrahighmagnetic fields above 100 T. Developed magnetostriction
measurement system relies on fiber Bragg grating (FBG)
technique. FBG is an optical fiber with which one is able todetect strain of matter by observing the Bragg wavelength in
the reflection. In the present study, we employed the opticalfilter method where the information of the shift of the Bragg
wavelength is converted to the intensity of the reflected lightas shown in Fig. 1(a), which can be detected at high speed of
100 MHz. The high-speed of 100 MHz is indispensable forFig. 3. (a) FBG signal from CaV4O9 at 4.2 K up to 190 T (b) Generated pulsed magnetic field using single turn coil whose pulse durationis 7 μs. (c) Magnetostriction of CaV4O9 at 4.2 K up to 190 T obtained
from the above data, showing the closing of spin gap and entering into aplateau region.

22

ISSP Activity Report 2017

References[1] A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi, H.
Watanabe, K. Sato, Rev. Sci. Instrum. 88, 083906 (2017).
[2] A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi, H.
Watanabe, K. Sato, Physica B 536, 847 (2018).
[3] A. Ikeda and Y. H. Matsuda, arXiv:1803.03404.
Authors
A. Ikeda and Y. H. Matsuda

Discovery of 2D Anisotropic Dirac Cones
I. Matsuda, Sugino, and Komori Groups
As the fifth element in the periodic table, boron atoms
form numerous bulk allotropes and provide a rich chemistry
and physics. Boron atomic sheets, borophene, also have anenormous number of two-dimensional (2D) polymorphs.
Recently, various borophene phases have been synthesized
on metal substrates, such as the β12 sheet. Theoretical works
have revealed numerous novel properties of these borophene
phases, such as phonon-mediated superconductivity, but
experimental examinations of their electronic structures arefar from enough.
In the present research, we report observation of
2D anisotropic Dirac cones, Dirac delta (Δ)-cone, in χ3
borophene by the first principles calculations and angle-

Fig. 1. Photoemission intensity plots measured with 25 eV p polarized
photons at the X and X′ points. Red arrows and black arrows indicate
positions of the Dirac cones of DC1 and DC2, respectively. Red broken
circle show a region where one finds gap-opening for the DC1 band.

Fig. 2. (a) Fermi surface (FS), (b) nodal line (NL) of the metallic bands,
α,β,γ in Fig.1. (c) Result of the photoemission band mapping for NL
taken at photon energy of 30 eV and at binding energy (EB) of 1 eV.
Fig. 2. Schematic drawing of the structure model of χ3 borophene andthe anisotropic Dirac cones, Δ-Dirac ones.

resolved photoemission spectroscopy measurements usingsynchrotron radiation. The Dirac cones are centered at the X
and X′ points of the Brillouin zone, as shown in Fig.1. The
calculation reveals that these Dirac cones are mainly derived
from the p orbitals of boron, with negligible contributions
from the silver orbitals of the substrate. This represents thatthe χ3 borophene sheet is the quasi-freestanding layer.
The atomic structure and the electronic structure of the
Dirac Fermion are summarized in Fig. 2. Our results validate
χ3 borophene as the first 2D material that hosts anisotropic
Dirac cones. This may stimulate further research interest andenable the realization of high-performance boron devices.
z

References[1] B. Feng, J. Zhang, S. Ito, M. Arita, C. Cheng, L. Chen, K. Wu,
F. Komori, O. Sugino, K. Miyamoto, T. Okuda, S. Meng, andI. Matsuda, Adv. Mater. 30, 1704025 (2018).
[2] B. Feng, O. Sugino, R.-Y. Liu, J. Zhang, R. Yukawa,M. Kawamura, T. Iimori, H. Kim, Y. Hasegawa, H. Li, L. Chen, K. Wu,
H. Kumigashira, F. Komori, T.-C. Chiang, S. Meng, and I. Matsuda,
Phys. Rev. Lett. 118, 096401 (2017).
Authors
I. Matsuda, O. Sugino, and F. Komori

Discovery of Two-Dimensional Dirac Nodal
Line Fermions in the Monolayer Cu2Si
I. Matsuda and Sugino Groups
Tremendous research interest has recently focused on
topological semimetals which have vanishing densities ofstates at the Fermi level. In these materials, the valence
and conduction bands can touch at either discrete points
or extended lines. In the latter case, it forms nodal line
semimetals. The band degeneracy points or lines are also
protected by symmetries and are thus robust against external
perturbations.
Two-dimensional materials have also attracted broad
scientific interest because of their exotic properties andpossible applications in high-speed nano-devices. Thus,
realization of two-dimensional topological semimetals will

Fig. 1. (a) Atomic structure model of the monolayer Cu2Si. (b) The
calculated band dispersion curves. (c) Result of the photoemission band
mapping.

provide new platforms in academic and technological fields.
In this work, we study monolayer Cu2Si, which is composedof a honeycomb Cu lattice and a triangular Si lattice. As
shown in Fig.1, all the Si and Cu atoms are coplanar and thus
there is the mirror reflection symmetry with respect to the xy
plane. This symmetric feature is significant for the existenceof two-dimensional nodal lines. A commensurate monolayer
Cu2Si has been synthesized on a Cu (111) surface by the
Si deposition. Our comprehensive theoretical calculations
show the existence of two Dirac nodal loops centered aroundthe Γ point (Fig. 1). The gapless nodal loops are protectedby mirror reflection symmetry. These characteristic band
structures were directly observed by angle-resolved photoemission spectroscopy measurements (Figs. 1 and 2). The
theoretical and experimental results unambiguously confirm
the two concentric Dirac nodal loops in monolayer Cu2Si(Fig. 2). These results not only extend the concept of Diracnodal lines from three- to two-dimensional materials, butalso provide a new platform to realize novel devices at thenanoscale.
Reference[1] B. Feng, B. Fu, S. Kasamatsu, S. Ito, P. Cheng, C.-C. Liu,
S. K. Mahatha, P. Sheverdyaeva, P. Moras, M. Arita, O. Sugino,
T.-C. Chiang, K. Wu, L. Chen, Y. Yao, and I. Matsuda, Nature Comm.
8, 1007 (2017).
Authors
I. Matsuda and O. Sugino

Determination of Element-Specific Complex
Permittivity with Soft X-Ray Segmented
Cross Undulator at SPring-8 BL07LSU
I. Matsuda, Akai, Wadati, Harada,and Shin Groups
Permittivity (or conductivity) is a quantity that characterizes a response of a matter by an electric field, such as
an electromagnetic wave. It has historically been used todevelop varieties of electronic and optical devices that havesupported our society today. Determinations and understandings of permittivity of matters have been one of the highest
priority tasks of science and technology. Recently, therequirement has reached to the ultraviolet (UV) ~soft X-ray(SX) region due to necessity of developing the extended-UV(EUV) lithography for the advanced technologies or ultrahigh-resolution SX experiments for the frontier sciences, forexamples.
A permittivity has been often approximated as a (dielectric) constant but it is essentially the tensor quantity that iscomposed of diagonal and off-diagonal components. The
diagonal and the off-diagonal element carries non-magnetic

ISSP Activity Report 201723

Fig. 1. Image of the polarization modulated light with the L-MOKE set
up at SPring-8 BL07LSU.

and magnetic information of a matter, respectively, and itis the latter that has been significant to understand the spinpolarization or the magnetization. The individual elements
are complex, being composed of the real and imaginaryparts. The determination has been widely made by a probing
light with the polarization modulation (frequency of p) andthe measurement of the sample optical responses at the two
frequencies (p, 2p). Such an experiment is easily achievedby transmitting the incident light through crystals that allow
electric or mechanic controls of the polarization. Nowadays,
one can find varieties of commercial polarization modulatorsfor visible light and hard X-ray but for the EUV SX region.
This is mainly because the light absorbance in a matter inthis region is so large that it does not allow the transmission
and the light can only survive in vacuum due to absorption
by air molecules. In addition, the 'abnormal' optical responseat the absorption edges of the composing element has alsointervened the precise evaluation. Up to now, the determination has been made only with a help of simulations based on
the atomic parameters and the indirect experimental data,

which has often left the large uncertainty in the permittivity
values. Thus, the estimation has been made for systems thatare simple and not for the complicated or non-uniform ones.
To overcome these difficulties, one can use synchrotron
radiation, generated by electrons that already exist in vacuum
and one can control the polarization by the electron trajectory that is regulated by the external magnetic field.
Here, we developed a novel SX source of the segmented
cross undulator that can make the continuous polarization
modulation (p) of the light and carried out the magnetooptical measurement (p, 2p) of the buried Fe nanolm at the
Fe L-edge absorption edge in SX region (Fig. 1). As shownin Fig. 2, we succeeded in directly determining the complex
permittivity and we found that the first-principles calculation
with the Korringa-Kohn-Rostoker (KKR) formalism gave theperfectly matching results. It is of note that a spectral dip/peak at 705 eV in experiment is due to the optical responseby the film structure that has not been taken into accountin the calculation. Our procedure determines the permittivity of a sample in UV~SX region with high precisions,which is significant for the better understanding of the lightmatter interaction. It also opens new technical examination
method to seek for the best materials for optical elements, forexamples, in the EUV lithography technology or in the laser
technology of high harmonic generation lasers, high-brilliant
synchrotron radiation, and X-ray free electron laser.
References[1] S. Yamamoto, Y. Senba, T. Tanaka, H. Ohashi, T. Hirono, H.
Kimura, M. Fujisawa, J. Miyawaki, A. Harasawa, T. Seike, S.
Takahashi, N. Nariyama, T. Matsushita, M. Takeuchi, T. Ohata, Y.
Furukawa, K. Takeshita, S. Goto, Y. Harada, S. Shin, H. Kitamura, A.
Kakizaki, M. Oshima, and I. Matsuda, J. Syn. Rad. 21, 352 (2014).
[2] I. Matsuda, A. Kuroda, J. Miyawaki, Y. Kosegawa, S. Yamamoto, T.
Seike, T. Bizen, Y. Harada, T. Tanaka, and H. Kitamura, Nucl. Instrum.
Methods Phys., Sect. A 767, 296 (2014).
[3] Y. Kubota, Sh. Yamamoto, T. Someya, Y. Hirata, K. Takubo, M.
Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama, M. Taguchi, S.
Yamamoto, M. Tsunoda, H. Wadati, S. Shin, and I. Matsuda, J. Elec.
Spec. Rel. Phenom. 220, 17 (2017).
[4] Y. Kubota, M. Taguchi, Sh. Yamamoto, T. Someya, Y. Hirata, K.
Takubo, M. Araki, M. Fujisawa, H. Narita, K. Yamamoto, Y. Yokoyama,
S. Yamamoto, M. Tsunoda, H. Wadati, S. Shin, and I. Matsuda, Phys.
Rev. B 96, 134432 (2017).
[5] Y. Kubota, Y. Hirata, J. Miyawaki, S. Yamamoto, H. Akai, R.
Hobara, Sh. Yamamoto, K. Yamamoto, T. Someya, K. Takubo, Y.
Yokoyama, M. Araki, M. Taguchi, Y. Harada, H. Wadati, M. Tsunoda,
R. Kinjo, A. Kagamihata, T. Seike, M. Takeuchi, T. Tanaka, S. Shin,and I. Matsuda, Phys. Rev. B 96, 214417 (2017).
Authors
Y. Kubota, Y. Hirata, J. Miyawaki, S. Yamamoto, H. Akai, M. Araki,
Y. Harada, H. Wadati, S. Shin, and I. Matsuda

Interface Hydrogen Bonds atthe HeteroJunction between
Proton-Donating and Proton-Accepting
Self-Assembled Monolayers
I. Matsuda, Mori, amd Yoshinobu Groups

Fig. 2. a. εxz spectra of the Fe nanofilm at the L-edge obtained by the
L-MOKE measurement with the polarization modulated light. Red
lled circles and blue open circles represent its real and imaginary parts,
respectively. b. εxz spectra of bulk Fe (bcc) at the L-edge obtained by
the first-principles calculation with the KKR formalism. Red and bluelines represent its real and imaginary parts, respectively.

24

ISSP Activity Report 2017

Hydrogen bondings have been significant in chemicaland biological systems. It has been known to fix molecularconfigurations and it is also flexible for breaking and making
bonds between molecules at room temperature. Additionally, a hydrogen bond also effectively assists the proton(H+) transfer between the donor and the acceptor sites along
the bond. The transfer of one whole H+ ion substantiallychanges charge distributions between the molecules. BasedFig. 1. Schematic drawing of hydrogen bonds at the interface between
Cat-TTF and functional SAM (Im-SAM) on Au(111).

on this electron-proton concerting effect, highly conductive
pure organic molecular crystals have been realized at thepartially deprotonated molecular crystals of catechol-fused
ethylenedithiotetrathiafulvalene (H2Cat-EDT-TTF). These
facts motivate us to design a possible control of the film
conductivity depending of the proton position between H+
donor and acceptor layers, which leads to a new concept for
driving electronic device. As the first step of this ambitiousgoal, we created a hydrogen-bonding heterogeneous interface
consisting of a bilayer of the H+-donating and –accepting
molecules on a substrate (Fig. 1).
For the H + -acceptor molecular layer, we adopted
an imidazole-terminated alkanethiolate self-assembled
monolayer (Im-SAM) prepared on the Au(111) substrate.
The imidazole molecule can accept H+ at the imino N siteand stabilize it as an imidazolium cation. At the saturation
coverage of alkanethiolate-based SAMs, the molecules are ina closely packed standing-up form and the end group tends
toward the open side on the SAM. The molecular orbitals
and chemical properties of the functional end groups are
hardly perturbed from Au substrates due to the sufficient
thickness of the closely packed alkylene chains in the SAMs.
Thus, the imino N atom on Im-SAMs is expected to makehydrogen bonds as H+ acceptor sites with H+-donating
molecules.
For the counterpart, the H+-donor molecular layer, we
focused on the adsorption of the catechol-fused bis(methylthio)tetrathiafulvalene (H2Cat-BMT-TTF) molecules on the
Im-SAM film. The hydroxyl groups at the catechol moiety
in H2Cat-BMT-TTF should act as the H+-donating group, by
analogy to the conductive H2Cat-EDT-TTF complexes, in

Fig . 2. Infrared (IR) reflection absorption spectra for H2Cat-BMT-TTF
adsorbed on Im-SAM (red) and for Im-SAM (blue), in comparisonswith the IR spectrum for the H2Cat-BMT-TTF powder (black).

which it has been elucidated that the TTF moiety is electrondonating and the hydroxyl groups in the catechol moiety
accept the electron by pushing out H+.
We confirm the formation of a hydrogen-bonding heterogeneous bilayer that consists of the H2Cat-BMT-TTF layer
and the Im-SAM film, systematically elucidated by AFM,
X-ray photoelectron spectroscopy, infrared absorption
spectroscopy, and density functional theory calculations.
Figure 2 shows one of the evidence showing clear infrared
spectral signals of the bilayer system. The broad feature
at frequency of 2500-3500cm-1 indicates strong hydrogenbonds at the heterointerface. These results provide new
insight for designing electron-proton functions in adsorption
systems.
Reference[1] H. S. Kato, S. Yoshimoto, A. Ueda, S. Yamamoto, Y. Kanematsu, M.
Tachikawa, H. Mori, J. Yoshinobu, and I. Matsuda, Langmuir 34, 2189
(2018).
Authors
H. S. Kato, H. Mori, J. Yoshinobu, and I. Matsuda

Observation of Second Harmonic
Generation in Soft X-Ray and Studyof its Element Selectivity
I. Matsuda, Akai, Wadati, and Shin Groups
Second harmonic generation (SHG) is the well-known
nonlinear optical frequency conversion and it has been asignificant probe to investigate the electronic properties ofmatter. In the SHG process, optical fields interact with amedium of broken inversion symmetry, resulting in production of a double field frequency. Recent development ofa free electron laser (FEL), the high brilliant laser in theenergy range from vacuum ultraviolet to X-ray, allows to
explore nonlinear optical effects in these energy ranges. Allof the earlier studies on non-linear optics in those energy
ranges reported experiments conducted under a transmission
geometry in order to acquiring enough signals by meeting
phase-matching condition. In the soft X-ray range, the reflection geometry is preferred because the light in the energy
range is strongly absorbed by materials. However, in thereflection geometry, the non-linear optical experiments suffer
the extremely low signals due to the absence of coherent
amplification caused by the phase matching.
Here, we demonstrate observation of SHG from a
non-centrosymmetric crystal by employing the resonanceeffect described below, even under the reflection geometry(Fig. 1). The experiment was carried out by using a soft

Fig. 1. Second harmonic generation in the GaFeO3 crystal using Fe
3p resonance. (a) Energy diagram of SHG. The notations, g, n’, and n
represent the ground state, virtual state, and excited state, respectively.
(b) Projection view along the c axis of the crystal structure of GaFeO3.

ISSP Activity Report 201725

Fig. 2. (a) Schematic diagram of the SXFEL beamline at SACLA andthe SHG measurement system. (b) Fe 3p absorption spectrum of the
GaFeO3 crystal. (c) Intensity plot of the ω component of the reflected
SXFEL pulses, Iω, with respect to the correspondent incident intensity,
I0, at the photon energy ħω = 27.5 eV. (d) Plot of I2ω at the photon
energy of 2ħω = 55 eV. (e) Plot of I2ω at the photon energy of 2ħω =53 eV. The dashed lines shown in (c) and (d) were fitted by a powerlaw.

X-ray FEL (SXFEL) at SACLA in Harima. SHG signals
were detected when the photon energy with double
frequency 2ω was above the absorption edge of the sample,
as shown in Fig. 2. The metal M-edge resonance inherently indicates addition of element specificity to the SHG
experiment. Moreover, the reflection measurement geometry
indicates that the present method can be used for various
samples and experimental conditions. The optical frequency
conversion with SXFEL is expected to selectively probe theelectronic properties of nonlinear bulk crystals and the interfaces in heterostructures that are composed of multi-element
materials.
Reference[1] Sh. Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi,
Y. Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K Horiba, H. Yumoto,T. Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa,
S. Yamamoto, M. Kotsugi, H. Wadati, H. Kumigashira, T. Arima,
S. Shin, and I. Matsuda, Phys. Rev. Lett. 120, 223902 (2018).

has not been experimentally identified. Thus, we measured
magnetic circular dichroism (MCD) in resonant inelastic
soft x-ray scattering (SX-RIXS) of α-Fe2O3 [1]. RIXS-MCD
enables us to probe the MCD for each dd excitation, which
is very sensitive to the symmetry of the d orbitals, and is
expected to give an insight into the origin of the weak ferromagnetism induced by DMI in α-Fe2O3.
The x-ray absorption spectra (XAS) and RIXS experiments of an α-Fe2O3 single crystal were conducted at the
HORNET end-station at BL07LSU in SPring-8. MCD in
XAS and RIXS was measured by using a compact magnetic
circuit with permanent Nd-Fe-B magnets [2]. Figure 1(a)compares the experimental and calculated results of XASof α-Fe2O3. Peak splittings (Nos. 1 and 2) attributed to the
crystal field effect and a satellite feature at hν ≈ 713.25 eV
assigned to a charge-transfer state were clearly observed.
No discernible XAS-MCD signal was detected. XAS is well
reproduced by ab initio charge-transfer multiplet calculation.
Figures 1(b) and 1(c) show RIXS-MCD spectra measured
by two different experimental configurations. In the−configuration of k in || 〈112 〉 (Fig. 1(b)), the magnitude of
RIXS-MCD was relatively small at any excitation energies
employed compared with that in the configuration of–
k in || 〈110 〉 (Fig. 1(c)), where the dd excitation at 1.8 eV(peak B) showed RIXS-MCD for hν > 713.25 eV (No. 3,
the charge-transfer satellite), while no RIXS-MCD was
observed by the excitation of the main absorption peaks(Nos. 1 and 2). Thus, RIXS-MCD showed the crystal orientation and excitation energy dependences. The observed
RIXS-MCD is qualitatively well described by the calculations (Fig. 1(d)). RIXS-MCD in peak B′ is almost absent for
the excitations around the main peaks of the L3 edge (Nos. 1′
and 2′), while small but clear RIXS-MCD is found at peak B′
for the excitations above the satellite structure (No. 3′). The
more detailed configuration analysis has revealed that the
RIXS-MCD derives from spin flip excitations at delocalizedeg orbitals. By the combination of the experiments and calcu-

Authors
Sh. Yamamoto, Y. Hirata, S. Yamamoto, H. Wadati, S. Shin, andI. Matsuda

Dzyaloshinskii-Moriya Interactionin α-Fe2O3 Measured by Magnetic
Circular Dichroism in Resonant
Inelastic Soft X-ray Scattering
Harada Group
Dzyaloshinskii-Moriya interaction (DMI) is anasymmetric exchange interaction induced by a lack of inversion symmetry in materials through spin-orbit coupling.
Even though DMI is much weaker than the Heisenberg
exchange interaction, DMI plays an essentially importantrole to determine magnetism and related physical properties in various systems. DMI is expressed by the formula
Dij · Si × Sj, but the direction and magnitude of Dij has beendifficult to determine both theoretically and experimentally.
Among new approaches explored to measure DMI, selective
observation of the electronic structure that is responsible forthe DMI is of crucial importance. α-Fe2O3 is a prototype
material of DMI and shows weak ferromagnetism due tothe DMI at room temperature. However, even for α-Fe2O3,
the electronic structure leading to its weak ferromagnetism

26

ISSP Activity Report 2017

Fig. 1. Experimental and calculated results of Fe L3-edge XAS- and
RIXS-MCD spectra of α-Fe2O3. (a) Experimental and calculated Fe
L3-edge XAS spectra. (b) and (c)− Experimental RIXS-MCD
spectra–in the configurations of k in || 〈112 〉 and k in || 〈110 〉. (d) Calculated–
RIXS-MCD spectra in the configuration of k in || 〈110 〉. The red (I↑↑)
and blue (I↑↓) spectra represent the intensity of the scattered x ray forthe spin polarization of the incident x ray parallel and antiparallel tothe direction of the sample magnetization, respectively. The numbers in(b,c,d) indicate the excitation energies shown in (a).

lations, RIXS-MCD has unraveled that the origin of DMI
in α-Fe2O3 is the eg orbitals, which are strongly hybridized
with the 2p orbitals of oxygen atoms.
The results demonstrate the important capability of
RIXS-MCD to sensitively extract the magnetic information from MCD of each dd excitation in the weakferromagnet, where the net magnetic moments are so smallthat XAS-MCD is not applicable. With this advantage,
RIXS-MCD is expected to be more widely applied to theweak ferromagnetism and spin spiral induced by DMI.
Furthermore, bulk sensitivity and element selectivity of
RIXS will also promote the measurement of RIXS-MCD,
and thus RIXS-MCD could be a promising technique toobtain the information about the ground-state spin state.
Finally, it is worth mentioning that the computational
calculations have now become powerful enough to discuss
the very small magnitude of RIXS-MCD for the realistic
low-symmetry system, and will advance the more precise
analysis of the experimental results and give more complete
comprehension of physical properties.
References[1] J. Miyawaki, S. Suga, H. Fujiwara, M. Urasaki, H. Ikeno, H. Niwa,
H. Kiuchi, and Y. Harada, Phys. Rev. B 96, 214420 (2017).
[2] J. Miyawaki, S. Suga, H. Fujiwara, H. Niwa, H. Kiuchi, and Y.
Harada, J. Synchrotron Rad. 24, 449 (2017).
Authors
J. Miyawaki, S. Sugaa, H. Fujiwaraa, M. Urasakib, H. Ikenob, H. Niwa,
H. Kiuchi, and Y Harada
aOsaka University
bOsaka Prefecture University

Enhancement of the Hydrogen-Bonding
Network of Water Confinedin a Polyelectrolyte Brush
Harada GroupIn the crowded environment of a living cell, several
biomolecular polyelectrolytes−especially proteins, nucleic
acids, and complex sugars−are compressed together. Water
encapsulated between the aforementioned entities is nolonger a simple space-filling medium but is believed to
exhibit intriguing hydrogen-bonding networks depending
on its molecular dimensions and interfacial properties. This
unique hydrogen-bonding structure of water in the vicinityof polyelectrolytes should significantly affect the specificstructure and functions of biomolecules and their assemblies.
Hence, it is imperative to devise a novel method for investigating the local hydrogen-bonding structure of water nearpolyelectrolytes, which can aid in the understanding of thefunctions of biological systems. A polyelectrolyte brush, asurface-tethered polymer layer is a proper model interfaceof polymeric soft materials, such as proteins. A recent study
using microscopic infrared (IR) spectroscopy indicated thatwater molecules are confined in a polyelectrolyte brush witha highly ordered hydrogen-bonding network. The formationof a hydration layer of polyelectrolytes and the resultinghydrogen-bonding network is expected to be crucial tocontrolling the properties of biomolecules, such as lubrication and antifouling. This study sheds light on the local
hydrogen-bonding structure of water confined in a charged
polyelectrolyte brush and reveals that the hydrogen-bonding
structure of water confined in the polyelectrolyte brush is

Fig. 1. (a) O 1s soft X-ray emission spectra of water confined in thepolyelectrolyte brush, the dry brush measured in vacuum, liquid H2O,
and ice Ih. The excitation energy is 550.3 eV, which is well above theionization threshold. (b) Schematic of the hydrogen-bonding structureof water confined in the PMTAC brush.

very similar to ice Ih, even at room temperature [1].
O 1s X-ray emission spectroscopy (XES) experiments of water confined in the polyelectrolyte brush were
performed at the SPring-8 synchrotron radiation facility
using the BL07LSU HORNET station. Figure 1(a) compares
the O 1s XES spectra of the water confined in the poly[2(methacryloyloxy)- ethyltrimethylammonium chloride](PMTAC) brush, bulk liquid water, and ice Ih. The XES
spectra of the bulk liquid water and ice Ih are shown withthe same 1b1 peak intensity as that of confined water tocompare the spectral shape. The XES spectra of the confinedwater and ice Ih are very similar; the 1b1" peak, which isobserved in the spectrum of bulk liquid water, is negligible. The similarity between the two XES spectra is quite
surprising as a significant enhancement of hydrogen-bonding
is observed even at room temperature in the water confinedin the PMTAC brush. Moreover, enhanced spectral intensity
is observed around the 3a1 region for the confined water
as compared to that in ice Ih and bulk liquid water. The 3a1
peak, which is attributed to the dipole-forbidden transition(3a1 → 1a1) in tetrahedral symmetry, is not observed for ice
Ih and is smeared out in the case of bulk liquid water becauseof the high sensitivity of the 3a1 orbital to the distributionof the hydrogen-bond strength. Therefore, the enhancement of the 3a1 peak observed for the confined water can be
explained by the fact that the hydrogen bonds are distorted(not straight O−H···O bonds), albeit somewhat ordered, in
the PMTAC brush.
Our XES results confirm that these techniques are
extremely sensitive to the presence/absence and distortionof hydrogen-bonding. A majority of water molecules in
the polyelectrolyte brush are held together by one type ofhydrogen-bonding configuration: possibly a slightly distorted
but ordered hydrogen-bonding configuration even at room
temperature. The distorted picture is only a speculationfrom the emergence of the 3a1 state and the consideration of
the possible hydrogen-bond structure in the vicinity of thecharged site, which needs further study from both experimental and theoretical aspects. We believe that XES will
pave the way for novel, important research fields in the near
future.
Reference[1] K. Yamazoe, Y. Higaki, Y. Inutsuka, J. Miyawaki, Y. –T. Cui,
A. Takahara, and Y. Harada, Langmuir 33, 3954 (2017).
Authors
K. Yamazoe, Y. Higakia, Y. Inutsukaa, J. Miyawaki, Y. –T. Cui,
A. Takaharaa, and Y. Harada
aKyusyu University

ISSP Activity Report 201727

Capturing Ultrafast Magnetic Dynamics
by Time-Resolved Soft X-Ray
Magnetic Circular Dichroism
Wadati, I. Matsuda, and Shin Groups
Control of electron, magnetic, and lattice states by opticalexcitations in magnetically ordered materials has attracted
considerable attention due to their potential applications inelectronic and magnetic recording media functioning on an
ultrafast time scale below nanosecond (ns, 10−9 second, GHz
range). To capture their non-equilibrium dynamics, ultrafast time-resolved experiments have been carried out using
a bunched synchrotron light source, and x-ray free electron
lasers [1]. FePt thin films have drawn intense researchinterest owing to their potential for high density recording
applications by using their magnetism. Recently, Lambert
et al. have showed that circularly polarized laser pulses can
induce a small helicity-dependent magnetization in FePtAgC
granular film [2]. This finding suggests the possibility of
all-optical switching of the magnetism in FePt having very
short recording-time windows on the ps time scale.
Here, we present a setting for time-resolved (Tr-) x-ray
absorption spectroscopy (XAS) and Tr- x-ray magneto
circular dichroism (XMCD) in the partial electron yield(PEY) and total fluorescence yield (TFY) modes to measure
non-transmissive as-grown samples at nearly normal
incidence [3]. The results of Tr-XMCD experiments for
as-grown FePt films with non-transmissive substrates arereported. A photo-induced ultrafast demagnetization at theFe sites of the FePt thin film are observed within the experimental time resolution of 50 ps for Tr-XMCD at SPring-8.
Figure 1 shows an overview of the experimental setup for
Tr-XAS, Tr-XMCD, and Tr- resonant soft x-ray scattering(RSXS) measurements in the soft x-ray region at BL07LSU
of SPring-8. Tr-RSXS is performed at the θ < 90º side ofthe experimental chamber. The scattering is detected by the
micro-channel plate (MCP) or avalanche photodiode (APD)
installed on the 2θ motion of the diffractometer. On theother hand, XAS and XMCD in the PEY or TFY modes aremeasured at the θ > 90º side of the chamber. Emitted photoelectrons or x-ray fluorescence are caught by another MCP
topped on the linear motion. The femtosecond Ti:sapphirelaser with a wavelength of 800 nm is introduced into the
XAS and RSXS chamber. The laser irradiates samples
and photo-induced dynamics of the electronic and structural evolutions are examined by means of a pump-probed
technique. The laser pulses with 1 kHz repetition rate aresynchronized with selected bunches of the synchrotron anddelayed electronically. The signals of the MCP or APD are
amplified and gated on the oscilloscope or Boxcar integrator
which is triggered by the laser pulses (Fig. 1 (b)).

Fig. 1. (a) Overview of the setup for Tr-XAS and Tr-RSXS measurements at BL07LSU of SPring-8. The Ti-sapphire laser with a ~1 kHz
repetition rate, which is synchronized with the bunches of the synchrotron, is introduced into the experimental chamber. (b) Electrical circuits
for the detectors.

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ISSP Activity Report 2017

Fig. 2. (a) Time-evolutions of XMCD taken in the PEY mode at(a) L3(hν=707.0 eV) and (b) L2 (hν=720.2 eV) edges for the FePt thin film atroom temperature. (c) Laser-fluence dependence of Tr-XMCD intensities (μ+ and μ−) at t=30 ps on the L3 edge (hν=707.0 eV). The dashedlines denote results of the linear fittings having a threshold.

The time evolutions of the FePt thin film with
16 mJ/cm2 laser irradiations are given in Fig. 2 (a) at
hν=707.0 eV (L3 edge) and (b) at 720.2 eV (L2 edge),
respectively. As can be seen, almost similar time-evolutions
are observed for the Fe L2,3 edges. XMCD exhibits a reduction in its intensity by ~90% of the original value ~30 ps
after the pump pulse. Then the XMCD exhibits a slow
recovery of the magnetization with a time constant of ~150
ps. In addition, the magnetization is not recovered to theoriginal value even at t=1500 ps, which is completed before
the next bunch arrives after ~342 ns. Figure 2 (c) gives the
Tr-XMCD intensities at t = 30 ps as a function of the laser
fluence. Threshold-like behavior is observed at 6.5 mJ/cm2
for t = 30 ps, which is estimated by the linear fittings for the
fluence dependences. These results indicate that the photoinduced effect will not be a simple thermal effect.
The less-distorted PEY method presented in this study
will provide an opportunity for applying a sum rule analysis
to XMCD spectra in the ultrafast pump-probed spectroscopy for various magnetic materials, which would be very
useful to explore the all-optical switching in spintronics
devices such as FePt, Co/Pt multi-layers and so forth. On
the other hand, the bulk sensitive TFY method will allow us
to measure the dynamics of bulk samples showing various
quantum phenomena.
References[1] A. Kirilyuk, A. V. Kimel, and T. Rasing, Rev. Mod. Phys. 82, 2731
(2010) and reference there in.
[2] C.-H. Lambert, S. Mangin, B. S. D. Ch. S. Varaprasad, Y. K.
Takahashi, M. Hehn, M. Cinchetti, G. Malinowski, K. Hono, Y.
Fainman, M. Aeschlimann, and E. E. Fullerton, Science 345, 1337
(2014).
[3] K. Takubo, K. Yamamoto, Y. Hirata, Y. Yokoyama, Y. Kubota, S.
Yamamoto, S. Yamamoto, I, Matsuda, S. Shin, T. Seki, K. Takanashi,
and H. Wadati, Appl. Phys. Lett. 110, 162401 (2017).
Authors
K. Takubo, K. Yamamoto, Y. Hirata, Y. Yokoyama, Y. Kubota, S.
Yamamoto, S. Yamamoto, I. Matsuda, S. Shin, T. Sekia, K. Takanashia,
and H. Wadati
aInstitute for Materials Research, Tohoku University

ISSP Activity Report 201729

Joint Research Highlights
Anomalous Change in the de Haas-van
Alphen Oscillations of CeCoIn5
at Ultralow Temperatures
H. Shishido, Y. Yanase, and M. Yamashita
A very strange quantum behavior is found in a stronglycorrelated superconductor at unprecedented ultralow temperatures [1]. The heavy-fermion compound CeCoIn5 is thecelebrated, one of the most-studied d-wave superconductor[2]. Its unconventional superconductivity has been thought
to be arisen by quantum fluctuations near the magneticallyordered state. However, in spite of many efforts, the orderedstate has yet to be discovered.
By using our home-made nuclear-demagnetization
cryostat at ISSP, we performed the de Haas-van Alphen(dHvA) measurements of CeCoIn5 down to 2 mK. In anormal metal, a dHvA amplitude increases with a lowering
temperature in accordance with the Lifshitz-Kosevich (LK)formula. However, in CeCoIn5, we unexpectedly find thatthe dHvA amplitudes deviate from the LK formula and show
an anomalous decrease with a shift of the dHvA frequencies
below a transition temperature Tn (Fig. 1). This anomalouschange suggests that the long-presumed ordered state is
finally discovered at ultralow temperatures unreachable forconventional cryostats.
The revised H–T phase diagram of CeCoIn5 (Fig. 2(a))

Fig. 1. (a) The temperature dependence of the dHvA amplitude of α3branch of CeCoIn5. The solid line shows the fit of the data from thestandard Lifshitz-Kosevich formula. (b) The temperature dependence ofthe normalized shift of the dHvA frequency ΔF(T, H) / F(150 mK, H) of
α3 branch. The data are shifted for clarity. The dashed lines are guides
for the eye.

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ISSP Activity Report 2017

Fig. 2. (a) The H-T phase diagram of CeCoIn5. Field-induced phasefound by our measurements (pink), the Fermi liquid (FL) region (gray),the superconducting (SC) phase (blue), and the high-field SC phase(yellow) are shown. Both Tn (the red circles) and TFL are multipliedby 4 for clarity. (b) A schematic H–T–x phase diagram near the AFM
QCP, where x denotes pressure or chemical substitution. The crosssection corresponds to the H–T phase diagram of CeCoIn5, in which a
presumed field-induced QCP (FI QCP) is also shown at the intersection
with the AFM boundary.

reveals that the field-induced AFM phase is located at theboundary of the unconventional superconductivity. Given
that the field-induced phase is observed at very low temperature, the H–T phase diagram of CeCoIn5 at ambient pressure
may be considered to be a cross section at the vicinity of the
AFM QCP in the H–T–x phase diagram (Fig. 2(b)) obtainedby the pressure dependence of the H–T phase diagram of
CeRhIn5 [3]. Thus, our study shows that CeCoIn5 is a prominent superconductor where the interplay of unconventional
superconductivity, magnetic order, and non-Fermi liquidbehaviors near the QCP can be studied without the ambiguity
caused by the application of pressure or chemical doping.
We also find that the transition temperature Tn depends
on field only weakly for 7–10 T even though the Zeeman
energy at 10 T is about 3 orders of magnitude larger thankBTn. This field dependence implies that AFM order isenhanced by suppressing the critical spin fluctuations in thevicinity of the AFM QCP in high fields, which gives rise to
the weak field dependence of Tn, as supported by the FLEX
calculation [4].
Future studies for the detailed structure of the newlyfound state would reveal the origin of the unconventional
superconductivity in the proximity of a magnetically orderedstate. As demonstrated by this study, we believe that thedevelopment of the ultralow-temperature measurements

has extensive potential to shed a new light on unexploredphenomena.
References[1] H. Shishido et al., Phys. Rev. Lett. 120, 177201 (2018).
[2] K. Izawa et al., Phys. Rev. Lett. 87, 057002 (2001).
[3] J. L. Sarrao and J. D. Thompson, J. Phys. Soc. Jpn. 76, 051013(2007).
[4] Y. Yanase, J. Phys. Soc. Jpn. 77, 063705 (2008).
Authors
H. Shishidoa,b, S. Yamada, K. Sugii, M. Shimozawa, Y. Yanasec, andM. Yamashita
aOsaka Prefecture University
bInstitute for Nanofabrication Research, Osaka Prefecture University
cKyoto University

Spin Current Noise of the Spin
Seebeck Effect and Spin Pumping
M. Matsuo and T. KatoIn the research field of mesoscopic physics, current noise
measurement is an important tool to obtain useful information on electronic transport such as determination of theeffective charge, evaluation of electron entanglement, andeven spin accumulation. In the research field of spintronics,
the pure spin current induced by, e.g., spin pumping andspin Seebeck effect (see the upper two schematic pictures inFig. 1), is a central research subject. Recently, the noise ofthis pure spin current has measured by using the inverse spin
Hall effect [1]. Although the noise of the pure spin current
is expected to have useful information, its theoretical study
has, however, been overlooked for a long time, and has juststarted recently in a few papers [2].
In our study [3], we considered a normal metal(NM)/ferromagnetic insulator(FI) bilayer system, which is an
important platform of spintronics. We considered a generalmodel Hamiltonian with both spin-conserving and non-spinconserving processes, and formulated the spin current andthe spin-current noise within the framework of Keldysh

Green’s function [4]. Using the second-order perturbation
with respect to the NM-FI interface coupling, we derived
expressions of them in terms of the propagators of electrons
and magnons. The lower panel of Fig. 1 shows temperaturedependence of the spin-current noise using parameters for ayttrium-iron-garnet-(YIG-)platinum interface. As indicatedfrom the figure, temperature dependences of the spin-current
noise contain useful information, which can distinguish themechanism of the spin-current generation.
We also demonstrated that simultaneous measurementof the spin current and the non-equilibrium spin-current
noise provides important information on spin transport.
The Fano factor, which is the ratio between the spin-current
noise and the spin current, was shown to be constant at
low temperatures for both spin Seebeck effect and spin
pumping. This low-temperature Fano factor includes information of effective spin in spin transport, which is ħ if thespin conserving process is dominant. As the weight of thespin non-conserving process increases, the effective spinincreases by mixture of the two types of spin transport
process. In actual experiments of spin pumping, the spincurrent can be generated also by spin Seebeck effect due tosample heating by microwave irradiation. Discrimination ofspin pumping signal from heating effect has been a problem
for long time. We proposed a method to estimate an increaseof the sample temperature by combining the spin current
and the spin-current noise. Finally, we discussed a spin Hall
angle, which indicates an efficiency of the inverse spin Hall
effect: conversion of spin current into charge current inmetals. In a special situation, we can know the Fano factor apriori. For example, the Fano factor is ħ at low temperatures
if the spin non-conserving process can be neglected. For sucha situation, we can use it as a standard for the spin current
and the spin current noise. By comparing this Fano factor
with actual measurement of charge current and current noises
in the inverse spin Hall effect, we can obtain the spin Hall
angle at the interface.
We hope that the present calculation serves as a bridge
between two well-established research areas, mesoscopic
physics and spintronic physics. This collaborated researchstarted from close discussion with M. Matsuo who was avisiting professor of ISSP in academic year 2016.
References[1] A. Kamra et al., Phys. Rev. B, 90, 214419 (2014).
[2] A. Kamra and W. Belzig, Phys. Rev. Lett. 116, 146601 (2016); S.
Takei and M. Mohseni, Phys. Rev. B 97, 014427 (2018).
[3] M. Matsuo, Y. Ohnuma, T. Kato, and S. Maekawa, Phys. Rev. Lett.
120, 037201 (2018).
[4] Y. Ohnuma, M. Matsuo, and S. Maekawa, Phys. Rev. B 96, 134412(2017).
Authors
M. Matsuoa,b, Y. Ohnumab, T. Kato, and S. Maekawab
aAdvanced Institute for Materials Research, Tohoku University
bAdvanced Science Research Center, Japan Atomic Energy Agency

Spin-Orbit Interaction in
Nanoparticle-Decorated Graphene
J. Haruyama and S. KatsumotoFig. 1. Upper two pictures: Schematics of spin-current generation by
spin Seebeck effect and spin pumping. Lower panel: Temperaturedependence of spin-current noise. The temperature is normalized with
the Curie temperature of the ferromagnetic insulator. Temperaturedependence of thermal spin-current noise is also shown.

Introduction of spin-orbit interactions (SOIs) into
two-dimensional (2D) honeycomb lattices is predicted tocreate 2D topological phases [1]. Graphene is a representative 2D honeycomb lattice, whereas it lacks SOIs due to the

ISSP Activity Report 201731

the non-local resistance measurement. The external current
is applied along 1-8, which causes the spin current along
the Hall bar via the SHE. The spin current next produces
voltages between 2 and 7, 3 and 6 through the inverse SHE.
Figure 2 shows the temperature variation of thus measured
non-local resistance R27 as a function of in-plane external
magnetic field, which causes the precession of electron spinsand hence diminish the non-local resistance. This can beviewed as, in a sense, a Hanle measurement. The behaviorof R27 shown in Fig. 2 clearly indicates the introduction of
considerably strong SOI into graphene. The estimated spin
separation by the SOI is as large as 50 meV, which is thelargest among so far reported. The value is supported byscanning tunneling microscopy spectra.
Fig. 1. (a)(b) Scanning electron micrograph and schematic top viewsof graphene formed into a multiple Hall bar pattern used for non-local
resistance (RNL) measurements. (c -e) Atomic force microscope imagesof the Bi2Te3 nanoparticle decorated on graphene using a nano needle
method (inset of (c)) with three different-densities (D) ; (c) – (e) for D~ 4/(100 nm)2 (coverage ~ 3%), D ~ 10/(100 nm)2 (coverage ~ 8%),and D ~ 23/(100 nm)2 (coverage ~ 20%), respectively. Lower panels
show the height along white broken lines in the upper panels.

lightness of carbon atom and the complete flatness of thelattice. Though many trials to introduce SOIs into graphenewith various perturbations have been reported so far, thenumber of sound experiments has remained small [2]. A way
to introduce SOI is to distribute nanoparticle with heavy
mass atoms onto graphene. Here we precisely control smallamount of nanoparticles (platinum (Pt) or bismuth telluride(Bi2Te3)) randomly distributed on graphene and observe theappearance of SOI-induced (inverse) spin Hall effect (SHE).
Pt or Bi2Te3 nanoparticles with diameters of 3 ~ 5 nm
are dispersed on monolayer graphene grown by chemical
vapor deposition and formed into a multiple Hall bar(Figs. 1(a), 1(b); area for w = 2 × Lsa = 5(μm)2). High qualityof the monolayer graphene has been confirmed by Raman
spectra and X-ray Photoelectron Spectroscopy. The electron
concentration in the graphene can be controlled with the
back-gate voltage. For this experiment, we develop a specifictool, that is, a nano-needle to carry out clean and noninvasive
decoration of graphene surface with nanoparticles. Droppinga small fleck of acetone, into which the nanoparticles are
dispersed with ultrasound, we can precisely control thenanoparticle density (D) on the graphene surface. Examplesof thus dispersed random nanoparticles are shown in
Fig. 1 (c-e) for D ~ 4, 10 and 23/(100 nm2), respectively.
After the decoration, samples are annealed at 400 ºC for 10
minutes under high vacuum to advance chemical bonding
between the nanoparticles and the carbons.
Figures 1 (b) also shows the terminal configuration for

Fig. 2. Temperature variation of non-local resistance R27 as a functionof in-plane external magnetic field.

32

ISSP Activity Report 2017

References[1] C. L. Kane and E. J. Mele, Phys. Rev. Lett. 95, 226801 (2005).
[2] J. Balakrishnan, G. K. W. Koon, M. Jaiswal, A. C. Neto, andB. Özyilmaz, Nat. Phys. 9, 284 (2013).
Authors
T. Nambaa, K. Tamuraa, K. Hatsudaa, C. Ohataa, T. Nakamura,S. Katsumoto, and J. Haruyamaa
aAoyama Gakuin University

STM Study of In-Gap Surface Stateson Single-Phase SmB6 (001)
S. Suga, F. Iga, and F. Komori
Strong electron correlation in the Kondo insulator
samarium hexaboride (SmB6, Fig. 1(a)) has attracted great
attention over decades. The hybridization of localized 4f
states with itinerant 5d states triggers a gap opening at
Fermi energy EF, and induces a metal-insulator transition
with decreasing temperature [1]. Recently, it was proposedthat the observed saturation in the electrical resistivity at

Fig. 1. (a) Schematic structure model of single-crystal SmB6. (b)Atomically-resolved STM image of the SmB6(001) surface preparedby the cycles of Ar+ sputtering and 1030 ºC annealing. (c) Spatiallyaveraged dI/dV spectrum over a wide range of sample bias from
-3.2 V to 2.2 V at 80 K. The peak at -2 V indicates Sm terminationof the prepared SmB6(001) surface. (d) Temperature dependence ofthe spatially-averaged dI/dV spectra on the SmB6(001) surface in the
hybridization gap area at 80 K and 4.4 K. The arrow indicates the fineshoulder structure located at -15 meV possibly derived from localized
bulk f-states.

Authors
T. Miyamachi, S. Suga a,b , M. Ellguth c , C. Tusche b,d , C. M.
Schneiderb,d, F. Igae, and F. Komori
aInstitute of Scientific and Industrial Research, Osaka University
bPeter Grünberg Institut, Forschungszentrum Jülich
cInstitut für Physik, Johannes-Gutenberg-University
dFakultät für Physik, Universität Duisburg-Essen
eIbaraki University

Atomic Contacts Easily Broken by
Bias Voltage under Tensile Stress
S. Kurokawa, Y. Hasegawa, and A. Sakai
Fig. 2. (a) Atomically-resolved STM image of the SmB6(001) surface.
(b) Magnified STM image of the SmB6(001) surface surrounded byblue dotted lines in (a). (c) (Left axis) STM height profile along theblue line in (b). Two types of defects, a small protrusion and a dip,
are visible at ~ 0.3 (left) and at 2.2 (right) nm, respectively. (Rightaxis) differential conductivity dI/dV along the blue line in (b). At eachposition, the magnitude of the dI/dV of the peak structure located at-8 meV in (d) is plotted. (d) Series of 14 dI/dV spectra recorded along
the blue line in (b). The colors indicate the recorded positions of thedI/dV spectra marked as dots with the same colors in (c), i.e, the spectrafrom bottom to top in (d) corresponds to the dots from left to right in(c). The dotted line indicates the energy position of a fine structure in
the in-gap state.

low temperature is attributed to a topological surface state
inside the hybridization gap. Experimentally, however,spatially-resolved surface characterizations by scanningtunneling microscopy (STM) have revealed that several
types of surface structures randomly coexist on the cleaved
SmB6(001) surfaces. This makes it difficult to investigate theintrinsic surface electronic properties by spatially-averaged
methods. As an alternative to the crystal cleavage, a cyclic
Ar+ ion sputtering and annealing was recently performed toprepare a single-phase SmB6(001) surface reproducibly [2].
Nevertheless, the atomically-resolved structure characterization of the surface is still necessary for detailed discussion of
its in-gap surface state.
Using STM, we have investigated structural andelectronic properties of a clean SmB6(001) surface preparedby the sputtering and annealing method [3]. Our atomicallyresolved observations shown in Fig. 1 (b) reveals that a
non-reconstructed p(1 × 1) lattice with point defects is
successfully and homogeneously formed over the entire
surface using an optimal annealing temperature. In thetunneling (dI/dV) spectra on this surface, we found a peakin the density of states at – 2 eV below EF (Fig. 1(c)), whichindicates the B 2p dangling bonds on a Sm-terminatedsurface. The hybridization gap with an in-gap state locatedaround − 8 meV below EF develops in the tunneling spectrawith decreasing temperature as shown in Fig. 1(d). In
Fig. 2, we show spatial dependence of the in-gap state near
EF at 4.4 K. The state is sensitive to the structural variationon the surface; it is significantly suppressed near the point
defect on the ordered region, but survives on the wholesurface irrespective of defects. The existence of a robust
surface state, which can be an evidence of a topologicallyprotected surface state, is confirmed inside the Kondo
hybridization gap in this system.
References[1] P. Coleman, Handbook of Magnetism and Advanced Magnetic
Materials, 1, 95 (Wiley, 2007).
[2] M. Ellguth, C. Tusche , F. Iga, and S. Suga, Philos. Mag. 96, 3284,(2016).
[3] T. Miyamachi et al., Sci. Rep. 7 12837, (2017).

A single-atom contact (SAC) of a metal is the smallest
contact where a single atom makes a link between a pairof electrodes. One notable characteristic of SACs is foundin their conductance, which is described as (Σnτn)G0. Hereτn is the transmission probability of the n-th conduction
channel and G0 = 2e2/h is the quantum conductance. Among
various metals, SACs of noble metals (Au, Ag, and Cu) areof particular physical and practical importance, because they
have only a single conduction channel with τ1 ~ 1, making
the conductance ~G0; a material-independent constant. These
unique characteristic makes them useful in logic circuits, andsome atomic devices employing SACs as functional elements
have already been developed.
For the device applications, SACs have to be stable underoperating bias voltages. Conventionally, the stability of SACs
is discussed in terms of their lifetime τ, which is given by thefollowing thermal-activation-type-formula: τ = τ0eW/kT; W =W0-αV-βF (α, β > 0), where τ0 is a pre-exponential factor, V
and F represent the bias and the tensile force applied to an
SAC, respectively, and W0 is the activation barrier at V = F =0. The term αV represents the reduction of the barrier by thebias voltage. Similarly, the term βF determines the ultimate
tensile strength to break the SAC.
In the equation, both V and F additively contribute to
reduce the activation barrier and shorten the lifetime, whichmeans that the bias stability depends on the amount of F.
To date, the bias stability has been experimentally studied
for some metal SACs that had been, in most cases, preparedby mechanical breaking, which is usually subjected toFig. 1. Examples of I–V curves observed at Au SACs produced (a) byjunction opening (JO) and (b) by junction closing (JC). The junction
current increases linearly up to the high-bias breakdown.

ISSP Activity Report 201733

because a JC-SAC is formed by the touching of twoelectrodes. We consider that it is due to the short-range
attractive force. At the close distances the apex atom moves
towards the counter electrode by the attractive force exerted
on the atom. As a result, the bonds between the contact atomand the electrode atoms are slightly stretched and exert atensile force on the contact atom. This explains why weobtained tensile force for our Au JC-SACs.
Our break voltage measurements of Au and Pb SACs
indicated that the JC-SACs exhibit a higher break voltage
than the JO-SACs, which is favorable for the device application. The improved tolerance against the bias voltage can beunderstood by the reduced tensile stress in JC-SACs, clarifying the interplay between the junction force and the bias
stability in SACs.
Fig. 2. The distribution of the junction breaking voltages of Au SACs.
The blue and red histograms represent the distributions for JOand JC-SACs, respectively. The solid line indicates the Vb data for
JO-SACs collected by Smit et al. [3] The distribution of JC (red) is
obviously shifted to the high bias side compared to that of JO (blue).
The observed high-bias shift of Vb for JC indicates high stability of
JC-SACs against the bias voltage applied across the junction.

built-in tensile stress. In this work [1], we investigated thebreak voltages of Au and Pb SACs created by junction
closing (JC), instead of breaking, and compared the resultswith those produced by junction opening (JO) or breaking.
Because JC essentially involves no junction stretching, theJC-SACs should contain lower tensile forces than JO-SACs
and are thus expected to show higher break voltages.
Our break-voltage measurements were made on Au
contacts produced by mechanically controllable breakjunction (MCBJ) method at 4 K. We also performed similar
break-voltage experiments on Pb SACs using a cryogenic
ultrahigh-vacuum STM at 1.7 K and fabricated Pb SACs by
touching a Pb-coated tungsten tip to a clean Pb surface [2].
Figures 1(a) and 1(b) show examples of the I–V curves
observed for JO- and JC-SACs, respectively. In both I–
V curves, the junction current increases with the voltage
and suddenly drops to zero at the point of break junction.
From the breaking point we determined the break voltage
Vb. Figure 2 summarizes the results of our Vb measurements on Au SACs. In the figure, the two histograms coloredin blue and red represent the distributions of Vb for JOand JC-SACs, respectively. Both histograms cover a widevoltage range, but the distribution of JC (red) is obviously
shifted to the high bias side compared to that of JO (blue).
The observed high-bias shift of Vb for JC conﬁrms ourassumption that JC-SACs show higher break voltages than
JO-SACs.
We also measured the break voltages of Pb SACs. The Vb
distribution of JC moves to the high bias side relative to thatof JO. Thus, as for Au, the JC-SACs of Pb tend to break athigher biases than the JO-SACs. The observed high-bias shiftof JC indicates that JC is a viable method for improving thebias stability of SACs.
From our results we also estimated the magnitude of
the force reduction in our Au JC-SACs. According to theequation mentioned above, a variation in the tensile force ΔF
is related to the variation in the break voltage ΔVb as ΔF =-(α/β)ΔVb. Our ΔVb for Au SACs is 0:52 V. Substituting thevalue of α and β adapted from Ref. 3, we obtain the force
reduction ΔF = 0:15 nN. Smit et al. [3] estimated F in JO is0.95 nN; thus, we find F in JC is 0.80 nN. This indicates that
the JC reduced the tensile force as expected, but the force
was still positive and remained tensile.
The tensile force in JC might appear counter-intuitive

34

ISSP Activity Report 2017

References[1] S. Wakasugi, S. Kurokawa, H. Kim, Y. Hasegawa, and A. Sakai,
J. Appl. Phys. 121, 244304 (2017).
[2] H. Kim and Y. Hasegawa, Phys. Rev. Lett. 114, 206801 (2015).
[3] R. H. M. Smit, C. Untiedt, and J. M. van Ruitenbeek, Nanotechnology 15, S472 (2004).
Authors
S. Wakasugia, S. Kurokawaa, H. Kim, Y. Hasegawa, and A. Sakaia
aKyoto University

Noble Metal Segregation in SrTiO3
M. Lee and M. Lippmaa
Photoelectrochemical water splitting is a process where
photoexcited electrons and holes are used to drive a chemicalhydrogen or oxygen evolution reaction at the surface of asemiconductor photoelectrode. The technique can be used
to harvest solar energy and store the energy in the form ofhydrogen fuel. In the semiconductor materials studied so far,the solar-to-hydrogen conversion process efficiency is still
too low for practical applications. Oxide semiconductors
such as titanates are often used as the electrode materials dueto the chemical stability in water, but the energy conversion
efficiency is limited by the loss of photocarriers to trapping
and recombination. A general solution to this problem is toconstruct a nanostructured photoelectrode where light canbe efficiently absorbed but a short escape path exists for thephotocarriers to reach the surface before recombination canoccur. For example, an array of semiconductor nanowires
can be used, which would increase the effective surface area,
guarantees a short carrier escape path in the radial directionof a wire, while still efficiently absorbing incident sunlight.
A drawback of this strategy is the complicated synthesis

Fig. 1. (a) Cross-sectional HAADF-STEM image of a Ir:SrTiO3 film
on a SrTiO3 substrate showing the formation of bright Ir clusters at thefilm interface. (inset) AFM image of the film surface, showing a smooth
step-and-terrace morphology. (b) Structural model of a lattice-matchedfcc Ir metal inclusion in the SrTiO3 lattice.

process of nanowires and limited long-term mechanicalstability. We have therefore studied the possibility of using
spontaneous noble metal segregation in a perovskite lattice
to embed self-organized nanoscale metal electrodes in thebulk of an oxide semiconductor. We have demonstrated theformation of Ir nanopillars in SrTiO3 thin films and photoelectrochemical measurements have shown that embedding
metal electrodes in a semiconductor does indeed improvethe energy conversion efficiency [1]. The main benefit ofthis structure is the simple one-step synthesis process andmechanical robustness.
The purpose of this joint-use project was to study the
initial stage of Ir metal segregation in SrTiO3 thin films [2].
As shown in the inset of Fig. 1a, the surface morphology ofthin Ir:SrTiO3 (~5 unit cell) films imaged by atomic force
microscopy (AFM) shows no obvious metal segregation
effects. However, bright clusters are observed in high-angle
annular dark field scanning transmission electron microscopy (HAADF-STEM) images. An in-situ energy-dispersive
x-ray spectroscopic analysis showed that the bright clusters
in the film are strongly enriched in Ir and consistent witha face-centered cubic (fcc) metal cluster embedded in theperovskite lattice, as illustrated in Fig. 1b. It is clear fromthe STEM analysis that the clusters have uniform lateralsize of about 2 × 2 perovskite unit cells. The thin films weregrown at strongly reducing conditions, which means that theperovskite lattice contains oxygen vacancies, promoting thesubstitution of Ir atoms at the anion site. The anion substitution allows the fcc metal to form a lattice-matched metal
inclusion in the SrTiO3 lattice. When similar films are grown
at slightly more oxidizing conditions, extended Ir metal
nanopillars form instead of the isolated metal clusters. This
work helps to design more elaborate oxide metal nanocomposites for energy harvesting applications.
References[1] S. Kawasaki, R. Takahashi, T. Yamamoto, M. Kobayashi, H.
Kumigashira, J. Yoshinobu, F. Komori, A. Kudo, and M. Lippmaa, Nat.
Commun. 7, 11818 (2016).
[2] M. Lee, R. Arras, R. Takahashi, B. Warot-Fonrose, H. Daimon,
M.-J. Casanove, and M. Lippmaa, ACS Omega 3, 2169 (2018).
Authors
M. Leea, R. Arrasb, R. Takahashi, B. Warot-Fonroseb, H. Daimona,
M.-J. Casanoveb, and M. Lippmaa
aNara Institute of Science and Technology
bUniversité de Toulouse

Discovery of ‘Quantum’ Supercritical
State of an Electron Fluid Induced by
Valence Fluctuations
S. Nakatsuji, S. Shin, and T. Sakakibara
The supercritical fluid state near the liquid-gas criticalpoint has been a major subject in condensed matter physics
for its technological relevance and for its scientific significance. One of the important goals is to bring down thecritical temperature and pressure, which are normallymuch higher than ambient conditions. By contrast, in theelectronic versions of these critical points, there are somecases where the temperature scale may be reduced significantly down to near-zero temperatures so that one may
observe quantum critical phenomena in the corresponding“supercritical” states. Strange metal behaviors have been
seen in correlated electron systems as a result of proximity

Fig. 1. Emergent quantum valence supercritical state in α-YbAl1-xFexB4
at x = 0.014 exhibiting the sharp change in the valence, volume and thepower law exponent in the temperature dependence of the resistivity.
The high valence state and the low valence state are fluctuating aroundthe valence crossover region as illustrated at the top of the figure. Herethe arrows indicate the magnetic moments of the Yb3+ ion (red sphere).
The middle of the figure shows the sharp valence change at aroundx = 0.014 at the absolute temperature of 20 Kelvin determined by the
hard x-ray photoelectron spectroscopy (HAXPES). Significantly, thevolume shows a similar x dependence to the valence. The contour plotat the bottom of the figure highlights the strange metallic state (yellow
highlighted regions) emergent concomitantly with the sharp valencecrossover at x = 0.014 between the normal metallic and magnetic
ordered states. The contour plot indicates the variation of the powerlaw exponent of the temperature dependence of the resistivity. The
valence quantum critical point exists at x = 0.014 and at absolute zerotemperature.

to a quantum critical end point of a first-order transition suchas a metamagnetic transition and a Mott transition. Anothercandidate for the density instability that may theoreticallydrive novel quantum criticality (QC) is valence transition[1]. Near its associated quantum critical end point, singularfluctuations of valence (which includes charge, spin, andorbital degrees of freedom) and its coupling with thermodynamic quantities are expected to lead to a strong violationof Fermi liquid (FL) behavior. Similar to the Widom line in
the supercritical fluid [2], fluctuations remain strong near
the valence crossover line. Although a valence crossover at
low temperatures has been reported in a variety of materials[3, 4], the associated QC has not been confirmed to date.
A valence critical end point existing near the absolute
zero provides a unique case for the study of a quantum
version of the strong density fluctuation at the Widom line in
the supercritical fluids. Although singular charge and orbital
dynamics are suggested theoretically to alter the electronic
structure significantly, breaking down the standard quasiparticle picture, this has never been confirmed experimentally to date. We provide the first empirical evidence thatthe proximity to quantum valence criticality leads to a clear
breakdown of Fermi liquid behavior. Our detailed study ofthe mixed valence compound α-YbAlB4 reveals that a small
chemical substitution induces a sharp valence crossover,accompanied by a pronounced non–Fermi liquid behavior
characterized by a divergent effective mass (Fig. 1) andunusual T/B scaling in the magnetization.
References[1] S. Watanabe and K. Miyake, Phys. Rev. Lett. 105, 186403 (2010).
[2] B. Widom, J. Chem. Phys. 43, 3898 (1965).
[3] J.-P. Rueff et al., Phys. Rev. Lett. 106, 186405 (2011).
[4] K. Matsubayashi et al., Phys. Rev. Lett. 114, 086401 (2015).

ISSP Activity Report 201735

Authors
K. Kugaa, Y. Matsumoto, M. Okawa, S. Suzuki, T. Tomita, K. Sone,
Y. Shimura, T. Sakakibara, D. Nishio-Hamane, Y. Karakib, Y. Takataa,
M. Matsunamic, R. Eguchid, M. Taguchia, A. Chainania,e, S. Shina, K.
Tamasakua,f, Y. Nishino, M. Yabashi, T. Ishikawa, S. Nakatsujig
aRIKEN SPring-8 Center
bUniversity of the Ryukyus
cInstitute for Molecular Science and The Graduate University for
Advanced Studies
dOkayama University
eNational Synchrotron Radiation Research Center
fHokkaido University
gJapan Science and Technology Agency

Discovery of a New Magnetic Material:“Weyl Magnet”
S. Nakatsuji, T. Kondo, and S. Shin
In 2015, Weyl fermions have been discovered for the firsttime near the Fermi level in the non-magnetic semimetal
TaAs. Weyl points in the momentum space serve as a pairof magnetic monopoles through the topological aspects of
the wavefunctions for electrons [1]. Moreover, the fictitious magnetic fields due to the monopoles may induce
novel electric transports, and could be useful for low energy
consumption electronics. In contrast to the non-magnetic
Weyl fermions in TaAs, magnetic Weyl fermions are known
to appear in magnets, thus would enable us to control Weyl
fermions by external magnetic field. This functionality will
be necessary for device applications, and many efforts havebeen made for searching magnetic Weyl fermions. However,they have remained hypothetical so far.
Recently, an antiferromagnetic manganese-tin alloy
Mn3Sn is found to exhibit a large anomalous Hall and Nernst
effects, even at room temperature [2, 3]. Usually, theseanomalous Hall and Nernst effects are known to be propor-

tional to magnetization and thus have been observed only inferromagnets. The spontaneous Hall resistivity in the antiferromagnet with vanishingly small magnetization indicatesthat the large fictitious field equivalent to a few hundred T
must exist in the momentum space. Recent DFT calculation
predicts that the large fictitious field or Berry curvature may
well appear due to the formation of Weyl points nearby the
Fermi energy EF [4].
Nakatsuji, Kondo and Shin groups at ISSP Universityof Tokyo and their theoretical collaborators at RIKEN havedemonstrated the realization of magnetic Weyl fermionsin Mn3Sn for the first time. Our study has revealed theexistence of a “Weyl magnet”, a new magnet with tunablemagnetic Weyl fermions by magnetic fields at room temperature [5]. We found strong experimental evidence for the
Weyl fermions in Mn3Sn, namely, that the band structure
revealed by angle resolved photoemission spectroscopy(ARPES) is found roughly consistent with density functional
theory (DFT) and the chiral anomaly is clarified in themagnetotransport measurements (Fig. 1). Thus, these experiments demonstrate that the large anomalous Nernst signals
arise from the Berry curvature associated with the Weyl
points near the Fermi energy.
Our groups have revealed extremely large magnetic transports and thermoelectric effects in the Mn3Sn magnet. By
their new discovery of Weyl magnet, the mystery of thesenovel properties would be solved. We anticipate that further
new phenomena will emerge through the interplay between
electron correlation and topology in Weyl magnets.
References[1] B. Q. Lv, H. M. Weng, B. B. Fu, X. P. Wang, H. Miao, J. Ma,
P. Richard, X. C. Huang, L. X. Zhao, G. F. Chen, Z. Fang, X. Dai,
T. Qian, and H. Ding, Phys. Rev. X 5, 031013 (2015).
[2] S. Nakatsuji, N. Kiyohara, and T. Higo, Nature 527, 212 (2015).
[3] M. Ikhlas, T. Tomita, T. Koretsune, M. –T. Suzuki, D. NishioHamane, R. Arita, Y. Otani, and S. Nakatsuji. Nature Physics 13, 1085
(2017).
[4] H. Yang, Y. Sun, Y. Zhang, W-J. Shi, S. S. P. Parkin, and B. Yan,
New J. Phys. 19, 015008 (2017).
[5] K. Kuroda, T. Tomita, M.-T. Suzuki, M.-T. Suzuki, C. Bareille,
A. A. Nugroho, P. Goswami, M. Ochi, M. Ikhlas, M. Nakayama,
S. Akebi, R. Noguchi, R. Ishii, N. Inami, K. Ono, K. Kumigashira,A. Varykhalov, T. Muro, T. Koretsune, R. Arita, S. Shin, T. Kondo, and
S. Nakatsuji, Nature Materials 16, 1090 (2017).
Authors
K. Kuroda*, T. Tomita*, M.-T. Suzukia, C. Bareille, A. A. Nugrohob, P.
Goswamic, M. Ochid, M. Ikhlas, M. Nakayama, S. Akebi, R. Noguchi,
R. Ishii, N. Inamie, K. Onoe, K. Kumigashirae, A. Varykhalovf,
T. Murog, T. Koretsunea, R. Aritaa, S. Shin, T. Kondo, and S. Nakatsuji[*equal contribution]
aRIKEN Center for Emergent Matter SciencebInstitut Teknologi Bandung
cUniversity of Maryland
dOsaka University
eHigh Energy Accelerator Research Organization (KEK)
fElektronenspeicherring BESSY II
gJapan Synchrotron Radiation Research Institute (JASRI)

Fig. 1. Evidence for Weyl fermions in Mn3Sn:(a)Weyl fermions incondensed matter systems show an unconventional positive longitudinalmagnetoconductivity (negative longitudinal magnetoresistivity), called“chiral anomaly”. (b) This appears only when magnetic field is applied
parallel to electric field (B//I, θ = 0 deg.). With an increasing magnetic
field, the breaking of the imbalanced charge conservation between the
Weyl points with opposite chirality makes the materials more conductive. This novel phenomenon is known as one of the experimental
evidence of the Weyl fermions. (c) ARPES band mapping near the
Fermi level is compared with DFT band calculations. Weyl (bandcrossing) points with opposite chirality are denoted by blue and red
closed circles, respectively. (d) These Weyl points are found along the
K–M–K line in the bands on the kz = 0 plane near EF.

36

ISSP Activity Report 2017

First-order Magnetic Transitions andTransformation Arrested Behaviors
in Sn-Modified Mn2Sb
Y. Mitsui, K. Koyama, and Y. Uwatoko
First-order magnetic transition (FOMT) has been paid
much attention such as the large magnetocaloric effects
and metamagnetic shape memory effects. FOMT in somemagnetic functional materials suppressed under high

FRI state was arrested at in-field cooling process under 5 T.
For further investigation for the difference of magnetization, magnetic relaxation measurements were carried out.
Figure 2 shows the magnetic relaxation curves at 10, 30 and
50 K under 5 T. The measurements were performed after
in-field cooling under 5 T. Although the fraction of arrested
FRI state was small, magnetization clearly decreased both 30
and 50 K with increasing time, indicating the relaxation fromarrested-FRI state to AFM state.
In conclusion, magnetic properties of Sn-modified
Mn2Sb were investigated. It is suggested by magnetic
relaxation measurements that TTA phenomenon exhibits in
Mn2Sb0.9Sn0.1.

Fig. 1. Thermomagnetization curves for Mn2Sb0.9Sn0.1 under 0.1 and5 T [4].

magnetic fields. The suppression of FOMT is due to thefreezing of the phase transition, which is explained by glasslike dynamics. This phenomenon is called "kinetic arrest" or"thermal transformation arrest (TTA)". For the application ofmagnetic functional materials using FOMT, the investigationof the origin of TTA phenomenon is necessary.
Mn2Sb-based compounds exhibit FOMT between ferrimagnetic (FRI) and antiferromagnetic (AFM) state. So
far, magnetocaloric effects for Mn2Sb-based system were
examined [1]. Although Mn2Sb is ferrimagnet and do notshow FOMT, FRI-AFM transition exhibits by substitutionof V, Cr, Co and Cu to Mn-site. Additionally, it is reported
that Co-, and Cu-modified Mn2Sb exhibited TTA phenomenon [2, 3]. Meanwhile, modification of Sb-site, such as
Mn2Sb1-xGex [3] and Mn2Sb1-xSnx, also exhibits FRI-AFM
transition. However, there are few reports about TTA
phenomenon for these compounds. In this paper, we reported
the thermal transformation arrest behavior of Sn-modified
Mn2Sb by magnetization measurements [4].
Figure 1 shows the thermomagnetization (M-T) curves
in Mn2Sb0.9Sn0.1 under μ0H = 0.1 and 5 T. FRI-AFM phasetransition were observed for 100 ≤ T ≤ 210 K at μ0H =0.1 T. It is found that the temperature region of FOMT in
Mn2Sb0.9Sn0.1 is wider than other Mn2Sb-based systems,
such as Mn1.8Co0.2Sb [2] and Mn2Sb0.9Ge0.1 [3]. On theother hand, the difference in M between heating process after
zero-field cooling and in-field cooling were observed for T <50 K in 5 T. It is suggested that the FRI-AFM transition were
suppressed and residual FRI state existed. In other words,

Fig. 2. Magnetic relaxation curves for Mn2Sb0.9Sn0.1 at 10, 30, and
50 K in 5 T [4]. The magnetization M(t) was normalized by M(0).

References[1] L. Caron et al., Appl. Phys. Lett. 103, 112404 (2013).
[2] H. Orihashi et al., Mater. Trans. 54, 969 (2013).
[3] Y. Matsumoto et al., IEEE Trans. Magn. 50, 1000704 (2014).
[4] T. Wakamori et al., AIP Conf. Proc. 1763, 020006 (2016).
[5] T. Wakamori et al., IEEE Magn. Lett. 8, 1402404 (2017).
Authors
Y. Mitsuia, T. Wakamoria, K. Takahashib, R. Y. Umetsub, Y. Uwatoko,
M. Hiroia, K. Koyamaa,
aKagoshima University
bInstitute for Materials Research, Tohoku University

High Pressure Electrical Resistivity
Measurements for High-Tc Candidates
Material Ln4Ni3O8 (Ln=La, Nd, Sm)
M. Uehara, I. Umehara, and Y. Uwatoko
Ln4Ni3O8 (Ln=La, Nd, Sm) contains NiO2 planes andits crystal structure is basically the same with high-Tc
cuprate, and the formal valence of Ni is +1.33 composedof 3d 9 and 3d 8 mixed-valence state, being the same withhigh-Tc cuprate. Therefore, this compound seems to be a
promising candidate for new high-Tc material. Despite thesesimilarities with cuprate, this compound had showed neither
metallic characteristic nor superconductivity [1 - 3], until
we found that the intercalation and subsequent deintercalation treatment with sulfur (S-treatment) induced the metallic
nature down to ~20 K (below ~20 K resistivity shows
semiconducting upturn) in Nd3.5Sm0.5Ni3O8 [4, 5]. The
sample without S-treatment is named to be the “as-synthesized sample” and the sample after S-treatment to be the“S-deintercalated samples” in this report. The as-synthesized
and S-deintercalated samples are semiconducting andmetallic (above ~20 K), respectively.

Fig. 1. Temperature dependence of electrical resistivity for the
S-deintercalated sample of Nd3.5Sm0.5Ni3O8 under pressure.

ISSP Activity Report 2017

37

Rietveld analyses based on synchrotron X-ray diffraction data at room temperature obtained in KEK suggest theremoval of excess oxygens at apical site of Ni(2) which is in
the outermost NiO2 plane by S-treatment [6]. Therefore, it
can be inferred that the excess oxygens at apical site of Ni(2)impedes the metallic conduction and these are effectively
removed by the S-treatment. The similar situation has been
discussed on the role of reduction annealing necessary procedure to obtain superconductivity for T’-type high-Tc cuprate
having a very similar structure to present system.
In order to see whether or not the semiconducting
behavior at low-temperature is suppressed and the superconductivity emerges, electrical resistivity measurements atpressures up to 8 GPa were performed for metallic S-deintercalated sample, and the cubic anvil apparatus was used witha mixture of Fluorinert 70 and 77 as the pressure medium.
The result is shown in Fig. 1. In the temperature range from300 K to approximately 50–60 K, the electrical resistivity isdecreased by applying pressure. However, below approximately 50–60 K, with increasing applied pressure, theelectrical resistivity increases and the temperature where theelectrical resistivity shows an upturn from metallic conductivity increases, displaying enhancement of the semiconducting nature. As the origin of this unexpected result it
can be speculated as follows: the removal of excess apicaloxygens by S-deintercalation is not perfect. The pressure
pushes the remnant apical oxygens close to the NiO2 plane,
and the effect of random potential increases, enhancing thetendency of localization. Similar pressure effect has been
observed in T’-type high-Tc cuprate.
In conclusion, S-treatment removes additional apicaloxygen but the removal is not perfect under the present
S-treatment condition. Therefore, superconductivity might
appear when additional apical oxygen is completely removed
out.
References[1] V. V. Poltavets et al., Phys. Rev. Lett. 104, 206403 (2010).
[2] Y. Sakurai et al., Physica C. 487, 27 (2013).
[3] Y. Sakurai et al., JPS Conf. Proc. 1, 012086 (2014).
[4] A. Nakata et al., Adv. Condens. Matter Phys. 2016, 5808029(2016).
[5] K. Kobayashi et al., JJAP Conf. Proc. 6, 011106 (2017).
[6] M. Uehara et al., J. Phys. Soc. Jpn. 86, 114605 (2017)
Authors
M. Ueharaa, K. Kobayashia, H. Yamamotoa, K. Wakiyaa and I.
Umeharaa, J. Gouchi, and Y. Uwatoko
aYokohama National University

Maximizing Tc by Tuning Nematicity andMagnetism in FeSe1-xSx Superconductors
K. Matsuura, Y. Uwatoko, and T. Shibauchi
In iron pnictides, high-Tc superconductivity appears
near the antiferromagnetic phase, which is accompaniedby the tetragonal-to-orthorhombic structural transition
with significant electronic anisotropy (nematicity). It has
been discussed that the quantum fluctuations of nematic
and/or antiferromagnetic orders may play an essential role
for the superconductivity. However, these two orders coexist
with each other in iron-pnictide superconductors, and thus
it has been difficult to disentangle the role of each phasefor the superconductivity. To address this issue, FeSe is an
important material because it shows a non-magnetic nematic

38

ISSP Activity Report 2017

Fig. 1. Temperature-pressure-concentration phase diagram in FeSe1-xSx.
The structural (Ts, blue squares), magnetic (Tm, green triangles) andsuperconducting transition temperatures (Tczero, red circles) are plottedagainst hydrostatic pressure P and S content x. Ts, Tm and Tczero aredefined respectively by the temperatures of upturn, kink and zero resistivity in ρ(T) curves under pressure for x = 0.04, 0.08, 0.12 and 0.17.

order below 90 K [1]. Moreover, by isovalent S-substitution
which corresponds to the chemical pressurization, this orderis suppressed with increasing the S-content and it has beenfound that a non-magnetic nematic quantum critical point
exists in the phase diagram of FeSe1-xSx [2]. On the other
hand, the non-magnetic nematic phase is also suppressed
under physical pressure in FeSe, but before reaching aquantum critical point, a dome-shaped magnetic order is
induced, which competes with high-Tc superconducting
phase [3].
Here we report on our high pressure study on FeSe1-xSx
in wide ranges of pressure (up to P ~ 8 GPa) and sulfur
content (0 < x ≤ 0.17) by the electronic resistivity measurements with a cubic anvil high pressure apparatus in Uwatoko
group and X-ray diffraction measurements with a diamondanvil cell in SPring-8 [4].
Our single crystalline samples were synthesized by
the chemical vapor transport method. The electric resistivity measurements were carried out for FeSe1-xSx (x =0.04, 0.08, 0.12, and 0.17). From the anomalies seen in thetemperature dependence of the electrical resistivity, thetetragonal-to-orthorhombic structural transition temperature
Ts corresponding to the electronic nematic transition, thesuperconducting transition temperature Tc and the magnetic
phase transition temperature Tm are determined, and theirpressure dependence is investigated. From the results, weestablish a three-dimensional Temperature(T)-pressure(P)S substitution(x) electronic phase diagram as shown in
Fig. 1. As x increases, the pressure-induced magnetic dome
shifts to higher pressure and shrinks, while the low-pressure
non-magnetic nematic phase shifts to lower pressure anddisappears at x ~ 0.17. From this change, we find that the
non-magnetic nematic and magnetic phases are completely
separated in a low pressure region. To confirm the separation between two phases under pressure, we performed
synchrotron X-ray diffraction under pressure for x = 0.08.
In Fig. 2 we show (331) Bragg intensity as a function oftemperature at 3.0 and 4.9 GPa together with the ρ(T) anddρ/dT data. At 3.0 GPa, no discernible change of the Braggpeak is observed down to 10 K. At 4.9 GPa, on the other
hand, the splitting of the Bragg peak is resolved aroundTs ~ 41 K, evidencing the presence of the tetragonalorthorhombic structural transition. This structural transition
is located very close to the magnetic transition at Tm at 5.0
GPa as indicated by the sharp peak in dρ/dT curve. Thus, itFig. 2. (a) Temperature-pressure phase diagram for FeSe1-xSx (x =0.08) together with Ts determined by the high-pressure synchrotron
X-ray diffraction (XRD) in a diamond anvil cell (the purple hexagon
with error bars). (b), (c) Temperature dependence of Bragg intensity
as a function of 2θ angle is indicated in color scale for 3.0 GPa (b) and
4.9 GPa (c). ρ(T) and dρ/dT are also shown with the same horizontal
axis. The red, pink and green arrows indicate Tczero, Tcpeak and Tm,
respectively.

is natural to consider that the magnetic phase is accompaniedwith an orthorhombic structure, similar to the case of the
stripe-type magnetic phase in other iron-pnictide superconductors.
By simultaneously tuning chemical and physicalpressures, we achieve a complete separation of nematicand antiferromagnetic phases. In between, an extended
non-magnetic tetragonal phase emerges, where Tc showsa striking enhancement. The high Tc superconductivity isobserved near both ends of the magnetic dome. From thisresult, the fluctuations of magnetic order are likely to be
more relevant to the high-Tc superconductivity in this system.

M(Pc) planar molecule. In these compounds, the magnetic
d electron of the central ion in the planar molecule and the
conducting π electron reside in the same unit molecule.
This fact makes the interaction between d and π electrons
important. In M = Fe, the compound exhibits a giant negative
magnetoresistance (GMR); when a high magnetic field isapplied perpendicularly to the c-axis, the resistivity drops bymore than two orders of magnitude at low temperatures. On
the other hand, M = Mn, GMR is hardly seen. The motivation of our research is to know the difference in magnetic
structure between compounds that GMR can be seen andcompounds that GMR cannot be seen.
Here we report the results of our torque magnetometry
experiments on M = Mn compound, TPP[Mn(Pc)(CN)2]2,
using the microcantilever for the atomic force microscopy(AFM). This technique is very powerful, because even if thesample mass is on the order of 1 μg, it is so sensitive that we
can detect the torque signal. In our experiments only tiny
sample is available. The sample was mounted at the tip of thecantilever and the magnetic field orientation dependence ofthe signal that is nonlinearly proportional to the torque wasmeasured.
In Figs. 1 and 2, typical torque curves measured whenthe magnetic ﬁeld was rotated in the plane that includes
the c-axis, and when the magnetic ﬁeld was rotated in theab plane, are depicted, respectively. A twofold symmetricsignature with large and small peaks is seen in Fig. 1, which
has never been observed in our former measurements on
TPP[Fe(Pc)L2]2 (L = CN, Br, and Cl) family. This is characteristic of the ferromagnetism. On the other hand, a sawtooth
waveform and fourfold-symmetric behavior can be seen

References[1] S-H. Baek et al., Nature Materials 14, 210 (2015).
[2] S. Hosoi et al., Proc. Natl. Acad. Sci. USA 113, 8139 (2016).
[3] J. P. Sun et al., Nat. Commun. 7, 12146 (2016).
[4] K. Matsuura et al., Nat. Commun. 8, 1143 (2017).
Authors
K. Matsuuraa, Y. Mizukamia, Y. Araia, Y. Sugimuraa, N. Maejimab,
A. Machidab, T. Watanukib, T. Fukudac, T. Yajima, Z. Hiroi, K. Y. Yipd,
Y. C. Chand, Q. Niud, S. Hosoia, K. Ishidaa, K. Mukasaa, S. Kasaharae,
J.-G. Chengf, S. K. Gohd, Y. Matsudae, Y. Uwatoko, and T. Shibauchia
aUniversity of TokyobNational Institutes for Quantum and Radiological Science andTechnology
cJapan Atomic Energy Agency (SPring-8/JAEA)
dThe Chinese University of Hong Kong
eKyoto University
fChinese Academy of Sciences

Fig. 1. Torque curves under various magnetic fields when the magnetic
field was rotated in a plane included the c-axis at 0.42 K.

Torque Magnetometry Studies using
the Microcantilever on Molecular
Conductor TPP[Mn(Pc)(CN)2]2
K. Torizuka, M. Matsuda, and Y. Uwatoko
The shape of the Metal Phthalocyanine TPP[M(Pc)(CN)2]2 compound (M = 3d metal) is unique; two CNgroups are perpendicularly attached to the center of theFig. 2. Torque curves under various magnetic fields when the magnetic
field was rotated in the ab plane at 0.53 K.

ISSP Activity Report 201739

in Fig. 2. This feature is interpreted as the antiferromagnetism. The electrons responsible for these behavior should
be d electrons of the Mn3+ ion for the former case, and πelectrons for the latter case. At first sight, it would be thoughtof that the electron we observe by our torque measurements might be the magnetic d electron only, in whichever
plane the magnetic field was rotated. However, our former
studies have already clarified that although the anisotropic
one-dimensional Heisenberg (AODH) model which should
describe only the behavior of the d electron can reproduce
the feature of the torque signal with the magnetic fieldrotated in the plane including the c-axis, it is insufficient todescribe the behavior of the torque when the magnetic field
is rotated in the ab plane, in terms of the AODH model only.
This model should be supplemented by the antiferromagnetic model of π electrons, because otherwise the behaviorof torque signals in this field rotation plane cannot be reproduced at the region of low temperatures and low magnetic
fields. We are thus allowed to consider that the electron we
can observe when the field rotated in the ab plane should bethe π electron, that is different from the electron when thefield rotated in the plane including the c-axis. We are thus
able to separate contributions due to the d and π electrons.
Now we also have to take the susceptibility data into
account. That shows the weak antiferromagnetic behaviorof the d electron as a result of applying the Curie-Weisslaw. We have to reconcile the torque and the susceptibility
data. One possibility is that the d electron should be in thecanted antiferromagnetic state, instead of the ferromagnetic. Even in the canted antiferromagnetic case, the torquecurve is also the same as that in the ferromagnetic case if
the anisotropy energy is very small. We also pointed out thatthe experimental observation that the magnetoresistance ishardly seen is consistent with the canted antiferromagnetic
model. The canted antiferromagnetism is very likely, because
the canted antiferromagnetism might be mediated by the
Dzyaloshinsky-Moriya interaction. In fact, the space inversion symmetry is broken and the spin-orbit coupling plays animportant role in our sample.
Reference[1] K. Torizuka, Y. Uwatoko, M. Matsuda, G. Yoshida, M. Kimata, and
H. Tajima, J. Phys. Soc. Jpn. 86, 114709 (2017).
Authors
K. Torizukaa, M.Matsudab, and Y. Uwatoko
aNippon Institute of Technology
bKumamoto University

Identification of the Key Interactions in
Structural Transition Pathway of FtsZ
from Staphylococcus Aureus
Y. Shigeta, R. Harada, and H. Matsumura
The bacterial cell division protein FtsZ forms a ringshaped filament (Z-ring) inside the cell membrane in thepresence of GTP, and dynamically repeats division anddissolution owing to treadmilling coupled with the GTPase
activity to cause invagination of the cell membrane. Although
this invagination is thought to be caused by shrinking ofthe Z-ring, its molecular mechanism is still unknown. The
crystal structure of GDP-bound Staphylococcus aureus FtsZ
(SaFtsZ-GDP complex) was experimentally determined by
X-ray structural analysis. Surprisingly, there are two different

40

ISSP Activity Report 2017

Fig. 1. (A)Free energy landscape of SaFtsZ, which connects T- andR-state. (B) Transition state structure during T- and R-state transition
around GDP binding site.

three-dimensional structures in the same crystal, whichcorrespond to GTP- and GDP-bound forms (or tense (T) andrelaxed (R) states) in the other species. Visualization of thetwo states in the same species enables us to investigate thestructural transition pathway between the T and R states,
which might be related to the constriction of the Z-ring.
Generally, in order to reproduce large-scale structural transitions related to biological functions in silico, extremely longtime molecular dynamics (MD) simulation is required. To
avoid this problem, it is necessary to apply some structuresampling method in order to reproduce important structuralchanges efficiently as quickly as possible. In this research,
we apply parallel cascade selection MD (PaCS-MD) simulation developed by us [1, 2] for searching structural transition
pathways between the T and R states [3]. After obtaining thetransition pathway we have evaluated free energy landscape(FEL) and find transition state (TS) structure (see Fig. 1).
From the FEL, the free energy difference and barrier between
the two states are merely kBT and 4kBT, respectively,
indicating the monomeric SaFtsZ-GDP complex exists inequilibrium. During the transition, it is found that the main
chain carbonyl group of Arg29, whose side chain moves
significantly between the T and R states, tentatively forms
a hydrogen bond with Arg191 nearby in the TS. From theseanalysis, it is found that Arg29 is a key amino acid residue
for the function of FtsZ, and a subsequent mutagenesis work
also support the hypothesis.
References[1] R. Harada, and A. Kitao, J. Chem. Phys. 139, 035103 (2013).
[2] R. Harada, Y. Takano, T. Baba, and Y. Shigeta, Phys. Chem. Chem.
Phys. (feature article) 17, 6155 (2015).
[3] J. Fujita, R. Harada, Y. Maeda, Y. Saito, E. Mizohata, T. Inoue, Y.
Shigeta, H. Matsumura, J. Struct. Biol. 198, 65 (2017).
Authors
J. Fujitaa, R. Haradab, Y. Maedaa, Y. Saitoa, E. Mizohataa, T. Inouea,
Y. Shigetab, and H. Matsumurac
aOsaka University
bUniversity of Tsukuba
cRitsumeikan University

Neutron Spin Resonance in the
112-Type Iron-Based Superconductor
H. Luo, S. Li, and T. Masuda
In unconventional superconductors, the neutron spinresonance is a crucial evidence for spin fluctuation mediatedsuperconductivity in the proximity of an antiferromagnetic

Test of Vacuum Anisotropy underHigh Magnetic Fields: Vacuum
Magnetic Birefringence ExperimentT. Inada, T. Yamazaki, and K. Kindo

Fig. 1. (a) Crystal and magnetic structure of Ca1−xLaxFeAs2 system.
(b) Linear scaling of spin resonance energy and critical temperature in
Fe-based superconductors. (c) Spin resonance in superconducting 112
compound measured at HRC (BL-12). (d) Polarized analysis of spinresonance at E=11 meV.

(AF) instability [1]. Although the spin resonance modeis theoretically believed to be a spin-1 exciton from thesinglet-triplet excitations of the electron Cooper pairs incopper oxides and heavy fermions[2], solid evidences arestill not well established yet in the iron-based superconductors (FeSC). The proximity to the AF order and spin-orbital
coupling give complexity on the energy and momentum
distribution of spin resonance, and the common featuresof the resonance mode need to be testified in various
materials[3].
By using inelastic neutron scattering, we have comprehensively studied the low-energy spin excitations of the new
discovered 112-type iron pnictide Ca0.82La0.18Fe0.96Ni0.04As2
with bulk superconductivity below Tc =22 K(Fig. 1(a)) [4].
A two-dimensional spin resonance mode is found around
E =11 meV by using high-resolution chopper (HRC)
spectrometer (Fig. 1(c)), where the resonance energy isalmost temperature independent and linearly scales with
Tc along with other iron-based superconductors (Fig. 1(b)).
Polarized neutron analysis reveals the resonance is nearly
isotropic in spin space without any L modulations (Fig.
1(d)). Because of the unique monoclinic structure withadditional zigzag arsenic chains, the As 4p orbitals contributeto a three dimensional hole pocket around the Γ point and an
extra electron pocket at the X point. Our results suggest thatthe energy and momentum distribution of the spin resonancedoes not directly respond to the kz dependence of the fermiology, and the spin resonance intrinsically is a spin-1 mode
from singlet-triplet excitations of the Cooper pairs in the caseof weak spin-orbital coupling. This work is published on
Physical Review Letters [5].
References[1] P. Dai, Rev. Mod. Phys. 87, 855 (2015).
[2] M. Eschrig, Adv. Phys. 55, 47 (2006).
[3] P. D. Johnson, G. Xu, and W.-G. Yin, Iron-Based Superconductivity(Springer, New York, 2015).
[4] N. Katayama et al., J. Phys. Soc. Jpn. 82, 123702 (2013).
[5] Tao Xie et al., Phys. Rev. Lett. 120, 137001 (2018).
Authors
T. Xiea,b, D. Gonga,b, H. Ghoshc,d, A. Ghoshc,d, M. Soda, T. Masuda,
S. Itohe, F. Bourdarotf, L.-P. Regnaultg, S. Danilkinh, S. Lia,b,i, and
H. LuoaaChinese Academy of Sciences
bUniversity of Chinese Academy of Sciences
cHomi Bhabha National InstitutedRaja Ramanna Centre for Advanced Technology
eHigh Energy Accelerator Research Organization
fUniversité Grenoble Alpes
gIntitut Laue LangevinhAustralian Nuclear Science and Technology Organization
iCollaborative Innovation Center of Quantum Matter

Classical electrodynamics governed by Maxwell’sequations describes the vacuum as an isotropic and dispersion-less medium, which properties are not affected by
the application of electromagnetic ﬁelds. However, if we
consider quantum electrodynamics (QED), the nonlinear
interaction between the ﬁelds is mediated by the vacuum
ﬂuctuation of virtual particle-antiparticle pairs. Consequently, the vacuum shows a ﬁnite size of anisotropy understrong magnetic ﬁelds, called vacuum magnetic birefringence (VMB). In addition to this QED effect, VMB can beenhanced by the contribution from undiscovered particles
such as axions, which are one of the leading candidatesof dark matter. The test of VMB therefore provides one of
the most sensitive searches for these particles with a massaround meV.
Three groups are currently trying to measure VMB, witha common scheme shown in Fig. 1. It consists of crossedNicols polarizers, a high-ﬁnesse Fabry-P´erot cavity, and amagnet that applies transverse ﬁelds with respect to the laser
axis. The VMB signal is measured as ellipticity induced by
the magnet. The surface of cavity mirrors has large static
birefringence, and to separate the VMB signal from it,
magnetic ﬁelds are temporally modulated. The modulation isrealized by a rotating permanent magnet (∼ 2.5 T) by one of
the groups, whereas we instead use a pulsed magnet since the
VMB signal is enhanced according to the square of the ﬁeld
strength (B2). Our magnet produces alternative ﬁelds of +9 T
and −4.5 T with a high repetition rate of 0.1 Hz [1, 2].
The sensitivity to VMB is determined by the backgroundprocess of the Faraday effect caused by residual gas in thechamber. Since the Faraday component is linearly depends
on B, we apply alternative ﬁelds to subtract it. To emulate
the B2 dependence of the small VMB signal, we ﬁrst ﬁlled
a relatively high pressure of nitrogen gas (100 Pa) andobserved the square term of linear Faraday effect. Figure2(a) shows the agreement of the measured B2 term withcalculation of the squared Faraday term. The VMB measurement was then carried out under vacuum with ∼ 2000 cyclesof the alternating ﬁelds in 2018. The VMB coeffcient kCM
is calculated for each cycle and distributed as shown in
Fig. 2(b). The mean value of the distribution is consistent
with zero, showing no sign of axionic contribution. As         

Fig. 1. (upper) Schematic veiw of the setup. An incident light is polarized and stored in a high-ﬁnesse Fabry-P´erot cavity, where pulsed
magnetic ﬁelds induce elliptical polarization. (lower) Bare racetrack
coil before backed up with an outer metal. The magnet produces ﬁelds
of up to 10 T over the beam path.

ISSP Activity Report 201741

Fig. 1. Magnetoresistance in representative semimetals exhibiting
large MR. Typical area of MR in elemental (open circles) and binary
semimetal (closed circles) in the previous reports are shown bydifferent colors.
Fig. 2. (a) Test measurement of the small square term of the Faraday
effect caused by 100 Pa of nitrogen gas, compared to calculation. The
vertical axis shows the ratio of signal height with respect to the static
component S0. (b) Histogram of vacuum ellipticity coeffcient kCM
obtained by 2000 cycles of alternating +9 T and −4.5 T ﬁelds. The
ﬁtting to a Gaussian distribution shows a zero-consistent value for themean, which gives an upper limit on kCM. (c) Comparison of the current
limits on kCM (OVAL) with the other two groups. Note that, without
hypothetical particles such as axions, QED alone predicts ﬁnite vacuum
birefringence shown as the green line.

a result, it poses an upper limit on kCM, that is plotted inFig. 2(c) with recent results of the other groups. We have
improved our ﬁrst result in 2017 by two orders of magnitude[3]. There is still a large gap of sensitivity to reach the signal
level predicted by QED, and upgrades on the magnet andoptics are currently underway.
References[1] T. Inada et al., Phys. Rev. Lett. 118, 071803 (2017).
[2] T. Yamazaki et al., Nucl. Instrum. Methods Phys. Res. A 833, 122(2016).
[3] X. Fan et al., Eur. Phys. J. D 71, 308 (2017).
Authors
T. Inada a , T. Yamazaki a , X. Fan a , S. Kamioka a , T. Namba a ,T. Kobayashia, S. Asaia, J. Omachia, K. Yoshikawaa, M. KuwataGonokamia, Y. Tamasakub, Y. Inubushi b, K. Sawadab, M. Yabashib,
T. Ishikawab, Y. Tanakac, H. Nojirid, A. Matsuo, K. Kawaguchi, andK. KindoaThe University of Tokyo
bRIKEN Spring-8
cUniversity of Hyogo
dTohoku University

Reference[1] K. Yokoi, H. Murakawa, M. Komada, T. Kida, M. Hagiwara,
H. Sakai, and N. Hanasaki, Physical Review Materials 2, 024203(2018).
Authors
K. Yokoia, H. Murakawaa, M. Komadaa, T. Kidaa, M. Hagiwaraa,
H. Sakaia, and N. Hanasakia
aOsaka University

Mega-Scale Magnetoresistancein the Binary Semimetal NbAs2

Quantum Hall Effect in Topological
Dirac Semimetal Cd3As2 Films

H. Murakawa, K. Yokoi, and T. Kida

M. Uchida, M. Tokunaga, and M. Kawasaki

Recently, large magnetoresistance (MR) has beenreported for a wide variety of binary semimetals. The MR
values for these materials reaches 103 ~ 105 below 4 K
without an indication of saturation even at several tens oftesla. Although, the MR in these binary semimetals arereported to be “extremely large”, these values have been far
smaller than those in classical elemental semimetals suchas bismuth reported 80 years ago. In general, magnetoresistance in a semimetal is simply explained by two carriermodel, in which the carrier mobility is the decisive parameterfor the MR value. In fact, for ultrahigh mobility elemental
semimetals such as bismuth, the MR grows rapidly in only42

a few tesla, resulting in the MR much larger than thoserecently reported for the binary systems. On the other hand,the binary semimetals tend to have lower carrier mobility.
Thus, the increasing rate of MR is suppressed, resulting in a
non-saturating MR with much smaller value in a reachable
field. Therefore, it may be possible to enhance the MR in
binary semimetals merely by improving the crystal quality.
In this study, we have synthesized high quality single
crystals of NbAs2 by the chemical vapor transport techniqueand observed an extremely large magnetoresistanceexceeding 1.9 million at 1.7 K at 40 T. The present MR
value is one or two orders of magnitude larger than that forthe binary systems reported so far and reaches as high-level
as that of the ultra-high mobility elemental semimetals. We
showed that both of carrier mobility and charge compensation ratio were significantly improved in the present NbAs2
crystal exhibiting mega-scale MR. Thus, we demonstrate thatthe binary semimetal has a great potential to exhibit further
significant enhancement of MR merely by the improvementof the crystal quality.

ISSP Activity Report 2017

As crystalline materials of three-dimensional Diracsemimetal, Cd3As2 and Na3Bi have been suggested, andtheir unique electronic structures have been directly observed
through angle-resolved photoemission and scanningtunneling spectroscopy. On the other hand, its quantum transport especially at high fields has been still elusive, because
fabrication of high-quality Dirac semimetal films has beenhighly challenging unlike other topological materials. While
Cd3As2 has long been known as a stable II–V type semiconductor, its film quality has been limited due to the necessityof low-temperature growth.

Fig. 1. (a) Primary crystal structure of topological Dirac semimetal
Cd3As2. (b) Cross-sectional transmission electron microscopy imageof a Cd3As2 film fabricated by high-temperature annealing. Cd andAs atoms are periodically arranged without any clear crystallographic
defects over a wide area.

Here we report the observation quantum Hall effect andits thickness dependence by measuring high-quality Cd3As2
films fabricated by high-temperature annealing (Fig. 1)[1, 2]. Transport measurements up to 55 T were performed
using a nondestructive pulse magnet with a pulse duration of
37 ms. Longitudinal resistance Rxx and Hall resistance Ryx
were measured on the 60 μm-width Hall bar with flowing a
DC current of I = 5 μA.
Figure 2 shows high-field magnetotransport for two
Cd 3As 2 films with the same carrier density (n = 1 ×1018 cm-3) and different thicknesses (t = 12 and 23 nm).
Shubnikov-de Haas (SdH) oscillations and plateau-likestructures are resolved in longitudinal resistance Rxx andHall resistance Ryx. As the field increases, integer quantum
Hall states appear down to the quantum limit of filling factor
ν = 2. Rxx finally becomes zero, and simultaneously, Ryx
shows quantized values over wide field ranges. Temperaturedependence of Rxx measured from 1.4 to 50 K can be wellfitted with the standard Arrhenius plot, giving high activation energy of Δ = 19 K ascribed to the unusually high Fermi
velocity in the Dirac semimetal. Absence of the half-integer
plateaus suggests that a gap starts to open under the quantum
confinement to the Dirac semimetal state. Furthermore, thedegeneracy factor shows an interesting change dependingon the film thickness; It is altered from 2 to 1 with increaseof film thickness. Detailed analysis reveals that this change
is attributed to spin splitting or g factor change, not to thelifting of other degeneracies, e.g., of valley or surface states.

Fig. 2. (a) High-field magnetotransport for a relatively thin Cd3As2 film
(t = 12 nm) measured at T = 1.4 K. The numbers of the horizontal bars
represent the filling factor ν, determining the degeneracy factor to be 2
from its increment. (b) Same scan for slightly thicker films (t = 23 nm).
By contrast, the degeneracy is altered to 1 in this thicker film at highfields.

Reflecting the high Fermi velocity of the Dirac dispersion,
the band gap sharply opens when the confinement thickness, giving rise to the drastic change of the g factor change
observed in the quantum Hall effect.
Detailed electronic structures including subband splitting
and gap opening are determined by analyzing the quantum
transport depending on the confinement thickness. The
demonstration of quantum Hall states in the high-quality
Cd3As2 films opens a road to study high-field quantum transport in topological Dirac semimetal and its derivative phases.
Combining electric gating, heterostructure fabrication, or
chemical doping techniques to the high-field measurements
will open possibilities for further studying quantized transport phenomena by tuning Fermi level, hybridization gap, ormagnetic interaction.
References[1] M. Uchida, Y. Nakazawa, S. Nishihaya, K. Akiba, M. Kriener, Y.
Kozuka, A. Miyake, Y. Taguchi, M. Tokunaga, N. Nagaosa, Y. Tokura,and M. Kawasaki, Nature Communications 8, 2274 (2017).
[2] Y. Nakazawa, M. Uchida, S. Nishihaya, M. Kriener, Y. Kozuka,
Y. Taguchi, and M. Kawasaki, Scientific Reports 8, 2244 (2018).
Authors
M. Uchidaa, M. Tokunaga, and M. Kawasakia
aThe University of Tokyo

Robustness of Emergent Monopole
Fluctuations in a Chiral Magnet
MnGe under High Magnetic Fields
N. Kanazawa, Y. Tokura, and M. Tokunaga
Topological spin textures are a fertile source of emergent
electromagnetic responses owing to their quantized Berryphase. Berry phase acts as a fictitious magnetic flux,
so-called an emergent magnetic flux, affecting the motion of
conduction electrons in solids. By designing a topologicalspin arrangement, we can achieve an arbitrary emergent
magnetic field distribution, whose magnitude may reach aslarge as 4000 T when the size of topological spin object issqueezed in 1-nm2 area. In addition to such possible gigantic
electromagnetic responses, it is also noteworthy that we caneffectively realize the magnetic monopole structures, where
the magnetic field distribution is inversely proportional to thesquare of the distance (∝r / | r |3).

Fig. 1. Spin hedgehogs and corresponding monopole-type emergent
field distributions.

ISSP Activity Report 201743

References[1] N. Kanazawa, Y. Nii, X.-X. Zhang, A. S. Mishchenko, G. De
Filippis, F. Kagawa, Y. Iwasa, N. Nagaosa, and Y. Tokura, Nature
Commun. 7, 11622 (2016).
[2] Y. Fujishiro, N. Kanazawa, T. Shimojima, A. Nakamura,
K. Ishizaka, T. Koretsune, R. Arita, A. Miyake, H. Mitamura,
K. Akiba, M. Tokunaga, J. Shiogai, S. Kimura, S. Awaji,
A. Tsukazaki, A. Kikkawa, Y. Taguchi, and Y. Tokura, Nature Commun.
9, 408 (2018).
Authors
Y. Fujishiroa, N. Kanazawaa, T. Shimojimab, A. Nakamuraa, K.
Ishizakaa,b, T. Koretsuneb, R. Aritab, A. Miyake, H. Mitamura, K.
Akiba, M. Tokunaga, J. Shiogaic, S. Kimurac, S. Awajic, A. Tsukazakic,
A. Kikkawab, Y. Taguchib, and Y. Tokuraa,baThe University of Tokyo
bRIKEN Center for Emergent Matter Science (CEMS)
cTohoku University

Fig. 2. Longitudinal magneto-resistivity (MR) measured with use of
mid-pulse magnet at low temperatures (T = 2, 5, 10, 30 K). Thick-line
curves are the results obtained by steady-field measurements (PPMS)
up to 14 T. Bold black curves are the estimated conventional MR
associated with the variations of magnetization shown in the black thinlines.

In a chiral magnet MnGe, there realized three-dimensional hairy spin structures, so-called spin hedgehogs, which
behave as the quantized sources or sinks of effective gauge
field, that is, emergent monopoles and anti-monopoles(Fig. 1). In association with emergent-monopole motion
driven by an external magnetic field, dramatic changes inmagneto-transport properties appear, exhibiting unusual
magnetic-field dependence, such as positive magneto-resistance, multiple elastic anomalies, magnetic-field-enhanced
thermopower and so on [1]. Those unusual properties arerooted in large fluctuations of emergent monopoles, which
induce considerable dynamical variations in the emergent
magnetic field distribution and consequently cause intense
scatterings of electrons, phonons and magnons.
By high-field measurements of magnetization and resistivity with use of the mid-pulse magnets installed at ISSP, we
experimentally found that the emergent monopole fluctuations can survive far beyond the topological transition where
the majority of spin hedgehogs undergo pair annihilation [2].
Figure 2 shows the magnetic field dependence of magnetization (M) and magneto-resistivity normalized by its zerofield value (ρxx/ρ0). We compare the measured ρxx/ρ0 (colorlines in Fig. 2) with the ordinary contribution to ρxx/ρ0 fromthe alignment of spins (thicker black lines, estimations from
the M-profiles), so as to evaluate the unusual contribution
from the monopole fluctuations (color shades). While at the
low temperatures (T = 2 K and 5 K) the unusual contribution
only exists below the magnetic field Hc with the topologicaltransition (vertical dashed lines), it persists even above Hc
only with small temperature elevation above 10 K. This
result may indicate the possibility that a part of spin hedgehogs escaping from their annihilation or thermally excitedhedgehog-like spin structure may exist even in the highfield regime and their fluctuations cause strong scatteringsof charge carriers. The observed robustness of the emergent
monopole fluctuations possibly originates from topologicalprotection against unwinding of the spin texture by external
magnetic fields.
The present results not only open the door to veiled
characteristic properties of emergent monopoles in the highfield regime but also demonstrate promising usefulness ofhigh-field measurements to clarify the topological stability ofspin nano-objects.

44

ISSP Activity Report 2017

Magnetization Process of the S = 1/2
Two-Leg Organic Spin-LadderCompound BIP-BNO
Y. Hosokoshi, S. Todo, and Y. H. Matsuda
Spin-ladder systems are a class of low-dimensional
materials that correspond to the crossover region between
one and two dimensions. The quantum-mechanical properties
and criticality of spin-ladder systems have attracted considerable attention. In the S = 1/2 spin-ladder system with theantiferromagnetic Heisenberg (AFH) exchange interaction, itis theoretically predicted that the even-leg spin ladder has aspin gap, while the odd-leg spin ladder is gapless [1, 2]. The
spin states of the even-leg AFH spin ladders in the presenceof a magnetic field (B) are particularly interesting. There isa transition to a gapless Tomonaga-Luttinger liquid (TLL)
phase at a critical magnetic field (Bc1) from a gapped disordered spin liquid state. The quantum critical phenomena areobserved in the vicinity of Bc1 as well as another critical field
Bc2 at which the spins are fully polarized [3, 4].
BIP-BNO (3,5’-bis(N-tert-butylaminoxyl)-3’,5-dibromobiphenyl, C20H24N2O2Br2) is a candidate for an S = 1/2
two-leg spin-ladder in which there are no transition metalelement but NO groups have S = 1/2 spins [5]. However,since the susceptibility is well reproduced by both a spinladder model and a bond-alternating chain model, the key toidentify BIP-BNO as a spin-ladder is the magnetization (M)Fig. 1. Magnetization curve of BIP-BNO. The circles and triangles
represent the experimental results of the single turn coil and thenon-destructive coil, respectively. The solid line shows the numericalresult calculated by the quantum Monte Carlo method.

Fig. 2. Magnetic field derivative of magnetization. The solid line,
circles, and triangles represent the numerical calculation, experimental
result with VSTC, and that with MLPM, respectively. The error bars
represent the statistical errors of the experiments of VSTC.

process. In the previous study, the magnetization curve up to
50 T clearly shows the transition at around 35 T. However,
the observed magnetization is approximately only up to aquarter of the saturation value Msat = 2 μB/f.u. To clarify theproperty of BIP-BNO as a spin-ladder system and to determine accurate exchange constants, it is required to analyze
the full magnetization curve and see how well the laddermodel can explain the experimental observations.
The measured magnetization curves at low temperatures(1.3 and 2 K) are shown in Fig. 1. The result obtained froma non-destructive-type multilayer-pulsed magnet (MLPM)
and that from the destructive-type vertical single-turn coil
(VSTC) are represented by triangles and the circles, respectively. Although the pulse duration of VSTC is three ordersof magnitude shorter than that of MLPM, the obtained twomagnetization curves are found to be almost identical in thefield range up to 70 T, which suggests an accurate measurement was conducted not only with non-destructive MLPM
but also the destructive VSTC. The magnetization below
37 T is nearly zero reflecting the spin-liquid ground state,
which is consistent with the previous study. It is found thatthe magnetization suddenly starts increasing at 37 T andshows the saturation at fields exceeding 74 T. We expectthat the phase in the region where the magnetization islarger than zero and smaller than the saturation value shouldbe the TLL as it is suggested in other two-leg spin-laddermaterials. Hence, we find Bc1 = 37 T and Bc2 = 74 T. To
compare experimental data with the theoretical model, we
calculated the magnetization of the spin-ladder system undera magnetic field by means of the worldline quantum Monte
Carlo method with the worm (directed-loop) algorithm. The
worm scattering probability is optimized using the geometricallocation. The exchange constants of the model are
estimated using the simulated annealing in which the deviation from the experimentally obtained magnetization curve isminimized. The calculated magnetization curve (solid line) isshown in Fig. 1 and we obtain Jrung / kB = 65.7 K and Jleg / kB
=14.1 K, where Jrung and Jleg are the exchange constants forthe leg and rung directions of the ladder, respectively.
Figure 2 represents dM/dB as a function of B. Sharp two
peaks are clearly seen in the numerically calculated as well
as experimentally obtained dM/dB curves. Moreover, theinflection point between the two peaks is found to be locatedat approximately 55 T where M = Msat / 2, and the symmetricform with respect to the inflection point is clearly seen.

The symmetric shape in dM/dB is the specific character ofa spin-ladder [6]. It should be noted that a bond-alternating
chain also give two peaks in the dM/dB curve. However, theshape is distinctly asymmetric; the peak heights of the two
are different, e.g., the height of the lower-field peak is from20 % to 70 % of the height of the higher-field peak,depending on the alternation parameter. Moreover, theinflection point between the two peaks is not at the center
position. The difference between the heights of the two peaksin BIP-BNO is evaluated to be only 3% in dM/dB and theinflection point located at the center between the two peaks,
which cannot be attributed to a bond-alternating chain. Thesefindings provide strong evidence that BIP-BNO is identified
with the S = 1/2 two-leg spin ladder [7].
The ratio of the Heisenberg exchange constants Jrung /Jleg is estimated to be approximately 4.7, which is deeply
in the strong coupling region: Jrung / Jleg > 1. In the curveof the magnetic-field derivative of the magnetization,dM / dB, the characteristic features, namely two sharp
peaks and a centered inflection point, are observed with asymmetric shape. This observation strongly suggests that
BIP-BNO is an S = 1/2 AFH two-leg spin ladder. It is worth
noting that BIP-BNO is the first prototypical organic (notcontaining magnetic ions) S = 1/2 spin-ladder compound.
References[1] E. Dagotto, J. Riera, and D. Scalapino, Phys. Rev. B 45, 5744
(1994).
[2] M. Azuma, Z. Hiroi, and M. Takano, Phys. Rev. Lett. 73, 3463
(1994).
[3] S. Sachdev, Science 288, 475 (2000).
[4] B. C. Watson, V. N. Kotov and M. W. Meisel et al., Phys. Rev. Lett.
86, 5168 (2001).
[5] K. Katoh, Y. Hosokoshi, and K. Inoue et al., J. Phys. Chem. Solids
63, 1277 (2002).
[6] X. Wang and L. Yu, Phys. Rev. Lett. 84, 5399 (2000).
[7] K. Nomura, Y. H. Matsuda, and Y. Narumi et al., J. Phys. Soc. Jpn.
86, 104713 (2017).
Authors
K. Nomura, Y. H. Matsuda, Y. Narumia, K. Kindo, S. Takeyama,
Y. Hosokoshib, T. Onob, N. Hasegawab, H. Suwac, and S. TodocaOsaka University
bOsaka Prefecture University
cThe University of Tokyo

Convergence of the Magnetic Grüneisen
Parameter at the Quantum Critical Pointof the Transverse-Field Ising-Chain
Z. Wang and Y. Kohama
Quantum critical point (QCP) is the end point in aphase diagram where a continuous phase transition occurs
at absolute zero temperature. So far, a lot of efforts havebeen made to understand the universal scaling behavior
in different types of QCPs. In case of field-induced QCP,
heavy-fermion compound and one-dimensional Heisenberg
spin systems are known to show a divergence in thermodynamically properties, such as specific heat and magnetic
Grüneisen parameter (Γm). In contrast, for the QCP of thetransverse-field Ising (TFI) spin chain system, it is theoretically shown that the Γm does not show a divergence behavior
when the QCP is approached by decreasing temperature at
the critical field, although it diverges when the critical field
is approached at zero temperature [1]. While many theoretical works on the TFI spin chain system are now available,
it remains very challenging to experimentally realize the

ISSP Activity Report 201745

behavior ofcorresponds to the Γm =. As seen in

Fig. 1(b) the field dependence ofshows a divergence
behavior approaching ~40 T. On the other hand, the temperature dependence ofdoes show a converging behavior at~40 T with decreasing temperature (Fig. 1(c)). This is consistent with the previous theoretical prediction [1] and the firstexperimental observation of the characteristic scaling featurein the TFI-chain QCP [2].
References[1] J. Wu, L. Zhu, and Q. Si, arXiv:1802.05627 (2018).
[2] Zhe Wang, T. Lorenz, D. I. Gorbunov, P. T. Cong, Y. Kohama, S.
Niesen, O. Breunig, J. Engelmayer, A. Herman, Jianda Wu, K. Kindo,
J. Wosnitza, S. Zherlitsyn, and A. Loidl, Phys. Rev. Lett. 120, 207205(2018).
AuthorsZhe Wanga,b, T. Lorenzc, D. I. Gorbunovd, P. T. Congd, Y. Kohama,
S. Niesen c, O. Breunig c, J. Engelmayer c, A. Herman c, J. Wu e,K. Kindo, J. Wosnitzad, S. Zherlitsynd, and A. Loidla
aExperimental Physics V, Center for Electronic Correlations andMagnetismbInstitute of Radiation Physics, Helmholtz-zentrum Dresden-Rossendorf
cInstitute of Physics II, University of Cologne
dDresden High Magnetic Field Laboratory (HLD-EMFL), HelmholtzZentrum Dresden-Rossendorf
eMax-Plank-Institute für Physik komplexer Systeme

Fig. 1. (a) Magnetocaloric-effect in BaCo2V2O8. The magnetic field
was applied to the [110] direction. (b), (c) The estimated Grüneisenparameter,, as a function of magnetic field and temperature.

paradigmatic model in a real material.
In our recent work [2], we show that the Ising-likespin-1/2 antiferromagnetic chain material BaCo 2V 2O 8
exhibits the unique QCP behavior of the TFI spin system
which fulfills the requirements of its experimental observations; (1) strong easy axis anisotropy (2) negligible interchain coupling, (3) accessible critical field strength of~40 T. In this research, we have performed magnetization,
sound velocity, and magnetocaloric-effect measurements as afunction of temperature and transverse magnetic field on the
single crystal of BaCo2V2O8, and have provided the experimental evidence of convergence behavior in Γm. To the bestof our knowledge, the Γm above 20 T has been experimentally obtained for the first time in this research, by using thepulsed field magnetocaloric effect (MCE) measurement.
Figure 1(a) shows the magnetocaloric effect data up to
55 T for various initial temperatures. The field dependenceof the sample temperature, T(B), detects the 3D Néel orderedphase at about 20 T and the field-induced QCP at 40 T asa broad minimum. The hysteresis below the critical field
can be due to slow dynamical process such as field-driven
reorientation of twin-domains as reported before. Figure1(b) and (c) show the temperature and field dependencesof. Since the T(B) curves was obtained in an approximate adiabatic condition (the sample is thermally isolated
due to the extremely short time scale of the pulsed field
duration), the process can be considered as an isentropic
one. Moreover, the lattice specific heat is not expected tobe field dependent. Therefore, the obtained field dependent

46

ISSP Activity Report 2017

A Linear Correlation between
Photocatalytic Activity andPhotoexcited Carrier Lifetime
K. Ozawa, S. Yamamoto, and I. Matsuda
Laser-assisted time-resolved (TR) measurement
techniques have facilitated great advances in our understanding of excited charge carrier dynamics. Preceding TR
experiments have revealed many aspects of photocatalytic
properties of TiO2. One of them is that a higher photocatalytic activity of anatase TiO2 (a-TiO2) than rutile TiO2
(r-TiO2) results from a longer lifetime of the photoexcited
carriers, owing to the different bulk band gap type (direct
versus indirect types). On the other hand, it has also beenrecognized that the TiO2 photocatalytic activity depends
on the orientation of the crystal surfaces. Although several
mechanisms such as a surface-dependent redox potential, anisotropic diffusion of the carriers, electron-trapping
probability, etc. have been proposed as a possible origin,none of them comprehensively explains the surface dependence. Thus, a more detailed picture of the relation between
the carrier dynamics and the photocatalytic activity must be
drawn to understand the unique phenomenon.
In the present study, we systematically assessed thephotocatalytic activities and photoexcited carrier lifetimeon single-crystal a-TiO 2(101) and (001) surfaces andr-TiO2(110), (001), (011), and (100) surfaces by X-ray
photoelectron spectroscopy (XPS) and TR-XPS [1]. The
photocatalytic activity was evaluated by a rate constant ofa photocatalytic decomposition of acetic acid. The carrier
lifetime was determined from a time evaluation of the ultraviolet (UV)-induced surface photovoltage (SPV).
Acetic acid adsorbs dissociatively on the TiO2 surfaces
via bonding interaction between the O atoms of carboxylate
and the surface Ti atoms. Saturation coverages depend on

the sputtered surface [1]. On the other hand, no such correlation is found between kph and the surface chemical reactivity,
which should be related to the saturation coverage of acetic
acid. The photocatalytic reaction is initiated by an interaction
between adsorbates and photoexcited carriers at the surface.
The present study indicates that the carrier density on thesurface rather than the adsorbate density is a prime factor todetermine the photocatalytic activity, since more carriers areavailable for the reaction when the carriers survive longer.
Thus, the carrier lifetime is a key to understand various
properties of TiO2 photocatalysis, including the orientationdependent activity.
References[1] K. Ozawa, S. Yamamoto, R. Yukawa, R.-Y. Liu, N. Terashima,
Y. Natsui, H. Kato, K. Mase, and I. Matsuda, J. Chem. Phys. C 122,
9562 (2018).
[2] K. Ozawa, S. Yamamoto, R. Yukawa, R. Liu, M. Emori, K. Inoue,
T. Higuchi, H. Sakama, K. Mase, and I. Matsuda, J. Chem. Phys. C
120, 29283 (2016).

Fig. 1. Correlation between the photocatalytic activity and the carrier
lifetime (top). Schematic illustrations of the photoexcited carrier
dynamics in a real space (middle) and an energy space (bottom).

Authors
K. Ozawaa, S. Yamamoto, R. Yukawab, R.-Y. Liuc, N. Terashimad, Y.
Natsuid, H. Katod, K. Maseb, and I. Matsuda
aTokyo Institute of Technology
bInstitute of Materials Structure Science, High Energy Accelerator
Research Organization (KEK)cInstitute of Physics, Academia Sinica
dHirosaki University

the surface orientation, but it ranges from 0.41 monolayers[on r-TiO2(011)] to 0.66 monolayers [on r-TiO2(100)]. The
rate of the photocatalytic decompostion of acetic acid wasestimated from a decreasing rate of the C 1s peak intensity
while the UV laser with the energy of 3.31 eV was irradiated. The peak intensity decreases exponentially with a time
constant τph of 370 min on r-TiO2(110). Since the reciprocalof τph is a rate constant kph, kph on r-TiO2(110) is evaluated tobe 2.7×10-3 min-1. This is the largest rete constant among all
surfaces examined in the present study. kph on a-TiO2(101)and (001) are 2.1×10 -3 min -1 and 1.7×10 -3 min -1 ,respectively, while r-TiO2(011) and (001) are inactive withkph = 0 min-1.
The lifetime of the photoexcited carriers was determinedfrom the time evolution of the SPV-induced Ti 2p peak shift.
All TiO2 surfaces examined in the present study form an
accumulation layer at the surface because of the inevitableformation of surface oxygen vacancies. The SPV is generated on these surfaces by charge separation of the photexcited electron-hole pairs as illustrated in Fig. 1 (middle andbottom); the electrons and the holes are drifted towards
the surface and bulk sides, respectively, along the potential
gradient in the accumulation layer. The holes, then, diffuse
back to the surface and recombine with the electrons at thesurface. This charge separation-recombination process is theorigin of the SPV generation-decay process. By examining
the SPV decay time after the swift generation by TRXPS, thephotoexcited carrier lifetime can be estimated. We examinedthe carrier lifetimes on three pristine surfaces [r-TiO2(110),
r-TiO2(011), and a-TiO2(001)] and one defective r-TiO2(110)
surface [2]. It is known that the lifetime strongly depends on
the surface barrier height. Thus, the experimentally determined lifetimes were converted to barrier-height-corrected
lifetimes so as to reproduce the lifetimes on the acetatesaturated surfaces; they are 450 ns, 360 ns, and 7 ns for
r-TiO2(110), a-TiO2(001), and r-TiO2(011), respectively.
The lifetime is found to be proportional to kph. A plot ofkph against the lifetime gives a linear and positive correlation(top of Fig. 1). The linear correlation is extendable even to

ISSP Activity Report 201747

Progress of Facilities
Supercomputer Center
The Supercomputer Center (SCC) is a part of theMaterials Design and Characterization Laboratory (MDCL)of ISSP. Its mission is to serve the whole community ofcomputational condensed-matter physics of Japan, providing
it with high performance computing environment. In particular, the SCC selectively promotes and supports large-scalecomputations. For this purpose, the SCC invites proposals forsupercomputer-aided research projects and hosts the Steering
Committee, as mentioned below, that evaluates the proposals.
The ISSP supercomputer system consists of two subsystems: System B is intended for larger total computational
power and has more nodes with relatively loose connections
whereas System C is intended for higher communication
speed among nodes. System B is SGI ICE XA / UV hybrid
system that consists of FAT nodes with large memory,
CPU nodes based on Intel Xeon, and ACC node enhanced
by GPGPU accelerator. Its theoretical performance is 2.6
PFLOPS. System C is HPE SGI 8600 with 0.77 PFLOPS.
In addition to the hardware administration, the SCC
puts increasing effort on the software support. Since 2015,
the SCC has been conducting “Project for advancement ofsoftware usability in materials science”. In this project, forenhancing the usability of the ISSP supercomputer system,
we perform some software-advancement activity such as
developing new application software that runs efficiently on
the ISSP supercomputer system, adding new functions toexisting codes, help releasing private codes for public use,writing/improving manuals for public codes. Two target
programs were selected in fiscal year 2017 and developed
software were released as DCore and (a new version of)HPhi. The SCC is also providing a service for porting users'
software to General Purpose GPUs (GPGPU).

Class

Max Points
System B

Application

System C

All staff members of university faculties or publicresearch institutes in Japan are invited to propose research
projects (called User Program). The proposals are evaluatedby the Steering Committee of SCC. Pre-reviewing is doneby the Supercomputer Project Advisory Committee. In fiscal
year 2017, totally 302 projects were approved. The total
points applied and approved are listed on Table. 1 below.
Additionally, we supported post-K and other computational
materials science projects through Supercomputing Consortium for Computational Materials Science (SCCMS).
The research projects are roughly classified into thefollowing three (the number of projects approved):
First-Principles Calculation of Materials Properties (121)
Strongly Correlated Quantum Systems (29)
Cooperative Phenomena in Complex, Macroscopic
Systems (117)
In all the three categories, most proposals involve bothmethodology and applications. The results of the projects arereported in 'Activity Report 2017' of the SCC. Every year 3-4
projects are selected for “invited papers” and published at
the beginning of the Activity Report. In the Activity Report
2017, the following three invited papers are included:"Development of open source software HΦ", Mitsuaki
KAWAMURA, Takahiro MISAWA, Youhei YAMAJI, andKazuyoshi YOSHIMI"Monte Carlo study of Ising model with non-integer
effective dimensions", Synge TODO
"Recent Extensions and Applications of Parallel Cascade
Selection Molecular Dynamics Simulations”, Ryuhei
HARADA and Yasuteru SHIGETA

Numberof
Projects

Total Points
AppliedApproved

System B

System C

System B

System C

A

100

50

any time

12

1.2k

-

1.2k

-

B

1k

100

twice a year

62

56.9k

-

40.0k

-

C

10k

1k

twice a year

171

1433.8k-633.0k

-

D

10k

1k

any time

6

26.5k

-

24.5k

-

E

30k

3k

twice a year

16474.0k

-258.0k-twice a year

0

0

-

0

-

SCCMS

35

271.5k-271.5k

-

Total

302

2263.9k-

1228.2k-

S

Table 1. Research projects approved in 2017
The maximum points allotted to the project of each class are the sum of the points for the two systems; Computation of one node for 24 hours corresponds to one points for the CPU nodes of System B and System C. The
FAT and ACC nodes require four and two points for a 1-node 24-hours use, respectively. There was no official
System C operation in SY2017 due to system replacement.

48

ISSP Activity Report 2017

Neutron Science Laboratory
The Neutron Science Laboratory (NSL) has been playing
a central role in neutron scattering activities in Japan since
1961 by performing its own research programs as well as
providing a strong General User Program for the universityowned various neutron scattering spectrometers installedat the JRR-3 (20MW) operated by Japan Atomic Energy
Agency (JAEA) in Tokai. In 2003, the Neutron Scattering
Laboratory was reorganized as the Neutron Science Laboratory to further promote the neutron science with use of the
instruments in JRR-3. Under the General User Programsupported by NSL, 14 university-group-owned spectrometers in the JRR-3 reactor are available for a wide scope of
researches on material science, and proposals close to 300
are submitted each year, and the number of visiting users
under this program reaches over 6000 person-day/year.
In 2009, NSL and Neutron Science Laboratory (KENS),
High Energy Accelerator Research Organization (KEK)
built a chopper spectrometer, High Resolution Chopper
Spectrometer, HRC, at the beam line BL12 of MLF/J-PARC(Materials and Life Science Experimental Facility, J-PARC).
Since HRC covers a wide energy and Q-range (10μeV < ħω< 2eV and 0.02Å-1 < Q < 50Å-1), it became complementary
to the existing inelastic spectrometers at JRR-3. HRC started
to accept general users through the J-PARC proposal system
in FY2011.
Triple axis spectrometers, HRC, and a high resolution powder diffractometer are utilized for a conventional
solid state physics and a variety of research fields on hardcondensed matter, while in the field of soft-condensed matterscience, researches are mostly carried out by using the small
angle neutron scattering (SANS-U) and/or neutron spin echo
(iNSE) instruments. The upgraded time-of-flight (TOF)
inelastic scattering spectrometer, AGNES, is also available
through the ISSP-NSL user program.
Scientific outputs from HRC in FY2016 covers wide
range in magnetism and strongly correlated electrons.
One of the research highlights is the observation of themagnetic excitations from two-dimensional interpenetrating
Cu framework (see Fig. 1) in Ba2Cu3O4Cl2 [1]. Combination of position sensitive detectors in wide scattering angle
and strong neutron flux in wide energy range enables theeffective measurement of spin dispersion as shown in Fig.
2. The magnetic excitations were found to emerge frominterpenetrating laminar sublattices of CuA and CuB spins
each of which is arranged on a square-lattice. Lower energy
excitations between 3 and 20meV originate from the weakly
coupled CuB spins and closely resemble the Sr2Cu3O4Cl2

Fig. 1. (a) Depiction of the magnetic structure in Ba2Cu3O4Cl2. The
circles filled by blue and red colors represent CuA and CuB sites,
respectively. Empty circles denote intermediate O atoms. The shaded
blue and red outlines represent the magnetic unit cells when CuA andCuA-CuB are magnetically ordered, respectively. The hopping terms
between ions used in our modelling are connected by colored lines. (b)Reciprocal space of Ba2Cu3O4Cl2 projected onto the (h, k) plane. The
shaded blue and red outlines represent the magnetic Brillouin zones of
the two sublattices: CuA and CuB respectively. Bragg scattering fromeach sublattice is shown at the magnetic zone center.

Fig. 2. Dispersion along high-symmetry directions in the 2D Brillouinzone obtained at 6 K. Extracted dispersion was obtained from TOF
measurements using neutron incident energies in the 28–400meV
range. The simulated spin-wave spectrum is shown for different parameters of t′3 and JAB in units of meV.

spectra [2]. In addition, the CuA-like excitations were truck
up to 300 meV, which have not been previously studied inthis family of materials. A single-band Hubbard model wascharacterized to characterize the spin dynamics from whichan effective spin Hamiltonian was derived. A suitable parameterization of the magnetic spectrum was found using linear
spin-wave theory. Careful analysis of the CuA and CuB spingaps provided the out-of-plane coupling, the strength of the
CuA and CuB coupling as well as the exchange anisotropies.
The interpenetrating CuB sublattice was found to be only
weakly coupled to the CuA spins. Along the magnetic Brillouin zone boundary of weakly-coupled CuB spins, a significant dispersion was observed, which is argued as a quantum
effect beyond linear spin wave theory.
Technical progress of HRC spectrometer was the development of high pressure environment. Cylinder-type cellmade of CuBe alloy was designed by Prof. Uwatoko. The
volume for the sample space is 5 mm in diameter and 20
mm in length. The maximum pressure is 1.4 GPa. The
measurement was performed on 0.4g of CsFeCl3 sample. 1
K cryostat was used to achieve 0.7 K, and the power of the
J-PARC operation was 400 kW. Well-defined spin wave was
successfully measured in the pressure-induced magnetic
phase in CsFeCl3.
The NSL also operates the U.S.-Japan Cooperative
Program on neutron scattering, providing further research
opportunities to material scientists who utilize the neutron
scattering technique for their research interests. In 2010,
relocation of the U.S.-Japan triple-axis spectrometer, CTAX,
was completed, and it is now open to users.
https://neutrons.ornl.gov/ctax[1] P. Babkevich et al., Phys. Rev. B 96, 014410 (2017).
[2] Y. J. Kim et al., Phys. Rev. B 64, 024435 (2001).

International MegaGauss
Science Laboratory
The objective of this laboratory (Fig. 1) is to study thephysical properties of solid-state materials (such as semiconductors, magnetic materials, metals, insulators, superconducting materials) under ultra-high magnetic field conditions.
Such a high magnetic field is also used for controlling the
new material phase and functions. Our pulse magnets, at

ISSP Activity Report 201749

moment, can generate up to 87 Tesla (T) by non-destructive
manner, and from 100 T up to 985 T (the world strongest as
an in-door record) by destructive methods. The laboratoryis opened for scientists both from Japan and from overseas,
especially from Asian countries, and many fruitful results are
expected to come out not only from collaborative research
but also from our in-house activities. One of our ultimate
goals is to provide the scientific users as our joint researchwith magnets capable of a 100 T, millisecond long pulses ina non-destructive mode, and to offer versatile physical precision measurements. The available measuring techniques now
involve magneto-optical measurements, cyclotron resonance,
spin resonance, magnetization, and transport measurements.
Recently, specific heat and calorimetric measurements arealso possible to carry out with sufficiently high accuracy.
Our interests cover the study on quantum phase transitions (QPT) induced by high magnetic fields. Field-induced

Fig. 2. The building for the flywheel generator (left hand side) and along pulse magnet station (right hand side). The flywheel giant DC
generator is 350 ton in weight and 5 m high (bottom). The generator,
capable of a 51 MW output power with the 210 MJ energy storage, isplanned to energize the long pulse magnet generating 100 T without
destruction.

Fig. 1. Signboard at the entrance of the IMGSL.

Building C
Room
101-113

Alias

Type

Bmax

Pulse width
BorePower source

Applications

OthersElectro- Magnetic
Flux Compression

destructive

1000 Tμs
10 mm

5 MJ, 50 kV
2 MJ, 50 kV

Magneto-Optical
Magnetization

5K–
Room temperature

Horizontal
Single-Turn Coildestructive

300 T
200 T

μs
5 mm
10 mm

0.2 MJ, 50 kV

Magneto-Optical measurements
Magnetization

5 K – 400 K

VerticalSingle-Turn Coildestructive

300 T
200 T

μs
5 mm
10 mm

0.2 MJ, 40 kV

Magneto-Optical
Magnetization

2K–
Room temperature

0.9 MJ, 10 kV

Magneto-Optical measurements
Magnetization
Magneto-Transport
Hall resistance
Polarization
Magneto-Striction
Magneto-Imaging
TorqueMagneto- Calorimetry
Heat Capacity

60 T
Building C
Room
114-120

Building C
Room 121

QPT has been explored in various materials such as quantum
spin systems, strongly correlated electron systems and othermagnetic materials. Non-destructive strong pulse magnets
are expected to provide us with reliable and precise solidstate physics measurements. The number of collaborative
groups for the research is almost 76 in the FT of 2017.

40 ms
18 mm

Mid-Pulse Magnet Non-destructive
70 T

40 ms
10 mm

PPMS

Steady State

14 T

ResistanceHeat Capacity

MPMS

Steady State

7T

Magnetization

87 T(2-stage pulse)

5 ms
10 mm

Short-Pulse Magnet Non-destructive
85 T

Building K
Long-Pulse Magnet Non-destructive

43.5 T

ISSP Activity Report 2017

Down to 0.3 K

Magnetization
Magneto-Transport

2K–
Room temperature

210 MJ, 2.7 kVResistance
Magneto-Calorimetry

2K–
Room temperature

Table 1. Available Pulse Magnets, Specifications

50

Lowest temperature
0.1 K

0.5 MJ, 20 kV
5 ms
18 mm
1s
30 mm

Independent
Experiment in 5 siteenergy. The 5 MJ EMFC system is under conditioning themain gap switches by finely tuning control parameters. Asan easy access to the megagauss science and technology, we
have the single-turn coil (STC) system capable of generating
the fields of up to 300 T by a fast-capacitor of 200 kJ. We
have two STC systems, one is a horizontal type (H-type,Fig. 4) and the other is a vertical type (V-type). Various kindsof laser spectroscopy experiments such as the cyclotron
resonance and the Faraday rotation are possible using theH-type STC.

Fig. 3. (Build. C) A view of the electro-magnetic flux compression
1000 T-class megagauss generator set in side of an anti-explosive house.
1000 T project started since 2010, and finally condenser banks of 9 MJ
(5 MJ + 2 MJ +2 MJ) as a main system with the 2 MJ sub bank system
for the seed field have been installed, and settled in the year of 2014.

A 210 MJ flywheel generator (Fig. 2), which is the world
largest DC power supply (recorded in the Guinness Book ofWorld Records) has been installed in the DC flywheel generator station at our laboratory, and used as an energy sourceof super-long pulse magnets. The magnet technologies areintensively devoted to the quasi-steady long pulse magnet (anorder of 1-10 sec) energized by the giant DC power supply.
The giant DC power source will also be used for the giant
outer-magnet coil to realize a 100 T nondestructive magnet
by inserting a conventional pulse magnet coil in its center
bore.
Magnetic fields exceeding 100 T can only be obtainedwith destruction of a magnet coil, where ultra-high magnetic
fields are obtained in a microsecond time scale. The project,financed by the ministry of education, culture, sports,science and technology aiming to generate 1000 T withthe electromagnetic flux compression (EMFC) system(Fig. 3), has been proceeded. Our experimental techniques
using the destructive magnetic fields have intensively beendeveloped. The system which is unique to ISSP in the world
scale is comprised of a power source of 5 MJ main condenserbank and 2 MJ condenser bank. Two magnet stations areconstructed and both are energized from each power source.
Both systems are fed with another 2 MJ condenser bankused for a seed-field coil, of which magnetic flux is to becompressed. The 2 MJ EMFC system is currently under theprocess for optimizing several mechanical and electricalparameters such as dimensions of coils and liners. And so
far, generation of 450 T was successfully done using 1.6 MJ

Fig. 4. Schematic picture of the H-type single-turn coil equipped with
50 kV, 200 kJ fast operating pulse power system, capable of generating
300 T within 3 mm bore coil.

Center of Computational
Materials Science
The goal of the materials science is to understand andpredict properties of complicated physical systems with avast number of degrees of freedom. Since such problems
cannot be solved with bare hands, it is quite natural to use
computers in materials science. In fact, computer-aided
science has been providing answers to many problems
ranging from the most fundamental ones to the ones withdirect industrial applications. In the recent trends of the
hardware developments, however, the growth of computer
power is mainly due to the growth in the number of the units.
This fact poses a very challenging problem before us --how can we parallelize computing tasks? In order to solve
this problem in an organized way, we coordinate the use of
the computational resources available to our community,
and support community members through various activities
such as administrating the website "MateriApps" for information on application software in computational science.
These activities are supported by funds for various governmental projects in which CCMS is involved. In particular,
we are acting as the headquarters of Priority Area 7 of
MEXT FLAGSHIP2020 Project (so-called "post-K computer
project"). In addition to this, CCMS is involved in Priority
Area 5 and Pioneering Area (CBSM2) of FLAGSHIP2020
project, Element Strategy Initiative, and Professional Development Consortium for Computational Materials Scientists(PCoMS).
The following is the selected list of meetings organized
by CCMS in FY2017:• 7/11-7/12 Post-K Project Priority Issue 7 , The 2nd
Annual Meeting (Koshiba Hall, Hongo, Tokyo)• 6/7 PCoMS Matching Workshop (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 6/16 Post-K Project Priority Issue 7, Sub-issue G Work
shop (The University of Tokyo Kashiwa Campus Station
Satellite, Kashiwa)

Fig. 1. Members of CCMS.

ISSP Activity Report 201751

• 6/29 CCMS Hands-On, HΦ (The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa)• 7/20 CCMS Hands-On, ALPS (The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa)• 8/1 Post-K Projec Priority Issue 5, The 1st meeting(Station Conference Manseibashi, Tokyo)• 8/28 Post-K Project Exploratory Challenge 1,
Sub-Challenge D, The 3rd Tensor Network Method
Study Group (The University of Tokyo Kashiwa Campus
Station Satellite, Kashiwa)• 8/30 CCMS Hands-On, mVMC (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 9/11 Post-K Project Priority Issue 7, the 3rd Forum on
Academia, Industry and Government collaboration for
Creation of new functional devices and high-performance materials (The University of Tokyo Kashiwa
Campus Station Satellite, Kashiwa)• 9/12 TIA-Kakehashi Poster Workshop (The Universityof Tokyo Kashiwa Campus Station Satellite, Kashiwa)• 10/3 CCMS Hands-On, MareriApps Live (The University of Tokyo Kashiwa Campus Station Satellite,
Kashiwa)• 10/10 RIST, The 4th Materials Workshop (Akihabara)• 10/13 CCMS Hands-On, OpenMX(TIA)(The Universityof Tokyo Kashiwa Campus Station Satellite, Kashiwa)• 10/24 Post-K Project Priority Issue 5, The 2nd meeting(Station Conference Manseibashi, Tokyo)• 10/26 CCMS Hands-On, xTAP (The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa)• 10/30 Post-K Project Exploratory Challenge 1,
Sub-Challenge B and D, Work shop (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 10/31 Post-K Project Exploratory Challenge 1,
Sub-Challenge D, Work shop (The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa)• 11/24 The 1st SALMON Tutorial (TIA) (The Universityof Tokyo Kashiwa Campus Station Satellite, Kashiwa)• 12/4 Next QUMAT2017 (Faculty of Engineering, theUniversity of Tokyo , Hongo, Tokyo)• 12/5-12/6 Post-K Project Priority Issue 7, The 3rd
Symposium (ISSP, Kashiwa)• 12/20 CCMS Hands-On, RESPACK (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 12/22 Post-K Project Priority Issue 7, Sub-issue G,
The 6th Work shop (The University of Tokyo Kashiwa
Campus Station Satellite, Kashiwa)• 12/26 Post-K Project Priority Issue 7, Sub-issue G, The
7th Work shop (Tokyo University of Science, Katsushika
campus)• 1/13 Post-K Project Priority Issue 7, Sub Issue E and
Post-K Project Exploratory Challenge, Sub-Challenge A,
The 2nd Work shop (AIST Kansai, Osaka)• 1/26 CCMS Hands-On, OpenMX(TIA) (The Universityof Tokyo Kashiwa Campus Station Satellite, Kashiwa)• 2/5-2/6 The 3rd Element Strategy Initiative, To Form
Core Research Centers Symposium on the Elements
Strategy Large-scale Research Facilities (Ito Hall,
Hongo, Tokyo)• 2/13 RIST, The 5th Materials Workshop (Akihabara)• 2/20 Post-K Project Priority Issue 5, The 3rd meeting(Station Conference Manseibashi, Tokyo)• 2/24 RIST, Mieruka Symposium (Visualization Symposium) 2018 (Nihonbashi Life Science Hub, Tokyo)• 3/30 Post-K Project Priority Issue 7, The 2nd Positron
Diffraction Work Shop (KEK, Tsukuba)

52

ISSP Activity Report 2017

• 1/23-1/25 Innovation Camp 2018 for Computational
Materials Science (Hokkaido)• 1/26 CCMS Hands-On, OpenMX (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 2/27 PCoMS Skill-up Training (The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa)• 3/5 CCMS Hands-On, MateriApps (The University ofTokyo Kashiwa Campus Station Satellite, Kashiwa)• 3/12-3/13 Symposium on Materials Science andTechnology towards Energy-Saving Society(MASTES2018) (Takeda Hall, Hongo, Tokyo)

Laser and Synchrotron Research Center(LASOR Center)
Laser and Synchrotron Research (LASOR) Centerstarted from October, 2012. LASOR Center aims to promotematerial sciences using advanced photon technologies at
ISSP by combining the “Synchrotron Radiation Laboratory” and “Advanced Spectroscopy Group”. These twogroups have long histories since 1980’s and have kept strong
leaderships in each photon science fields for a long timein the world. In the past several decades, the synchrotronbased and laser-based photon sciences have made remarkable progresses independently. However, recent progresses
in both fields make it feasible to merge the synchrotronbased and laser based technologies to develop a new direction of photon and materials sciences. In the LASOR Center,extreme laser technologies such as ultrashort-pulse generation, ultraprecise control of optical pulses in the frequency
domain, and high power laser sources for the generation ofcoherent VUV and SX light are intensively under development. The cutting edge soft X-ray beamline is also developed
at the synchrotron facility SPring-8.
LASOR center aims three major spectroscopic methods[ultrafast, ultra-high resolution, and operand spectroscopy]
by three groups [extreme laser science group, soft-X-ray
spectroscopy and materials science group, and coherent
photon science group], as illustrated in Fig. 2. Under thisframework, various advanced spectroscopy, such as ultrahigh resolution photoemission, time-resolved, spin-resolved
spectroscopy, diffraction, light scattering, imaging, microscopy and fluorescence spectroscopy are in progress byemploying new coherent light sources based on laser andsynchrotron technologies that cover a wide spectral range
from X-ray to terahertz. In LASOR Center, a variety ofFig. 1. Open ceremony of LASOR center on October 2012.

Fig. 2. Developments of advanced spectroscopy at LASOR center by
three groups

Fig. 4. Newly designed building E was constructed for new extreme
VUV- and SX-lasers and new spectroscopy.

materials sciences for semiconductors, strongly-correlatedmaterials, molecular materials, surface and interfaces, andbio-materials are studied using advanced light sources andadvanced spectroscopy. Another important aim of LASOR
Center is the synergy of photon and materials sciences.
Most of the research activities on the extreme laser
development and their applications to materials science
are performed in the ISSP buildings D and E at Kashiwa
Campus where large clean rooms and the vibration-isolated
floor are installed. On the other hand, the experiments
utilizing the advanced synchrotron source are performed at abeamline BL07LSU in SPring-8 (Hyogo).

attosecond pulses. For ultra-high resolution spectroscopy,
fiber-laser-based light sources are intensively developed
for producing EUV pulses for high resolution and timeresolved photoemission spectroscopy as well as extending
the frequency comb to ultraviolet or infrared for various
applications. The spectral range of intense optical pulses arebeing extended from visible to IR, MIR and THz ranges.
Various types of high-repetition-rate ultrastable light sources
are developed for laser-based ultrahigh resolution photoemission spectroscopy, high-average-power EUV generation in
an enhancement cavity, and frequency comb spectroscopy
for atomic physics, astronomical application, and frequency
standards.

• Extreme Laser Science GroupThe advancement of ultrashort-pulse laser technologies
in the past decade has transformed the laser development
at ISSP into three major directions, (i) towards ultrashortin the time domain, (ii) ultra high resolution in the spectral
domain, and (iii) the extension of the spectral range, withextreme controllability of the laser sources. For ultrafast
spectroscopy, we have developed carrier-envelope phasestable intense infrared light source that can produce sub-two
cycle optical pulses for high harmonic and attosecond pulse
generation. So far we observed coherent soft-X-ray radiation extending to a photon energy of ~330 eV. The simulation predicts the soft-X-ray field consists of single isolated• Soft-X-ray and Materials Science Group
Recently, VUV and SX lasers have progressed very
rapidly. They become very powerful for the materials
science using the cutting-edge VUV and SX spectroscopy.
Especially, angle resolved photoemission spectroscopy(ARPES) is very powerful to know the solid state properties.
Laser has excellent properties, such as coherence, monochromaticity, polarization, ultra-short pulse, high intensity, andso on. By using monochromatic laser light, the resolutionof ARPES becomes about 70-μeV. The materials science
with sub-meV resolution-ARPES is improved drastically byusing high resolution laser. For example, superconducting
gap anisotropy of the superconductors and Fermiology ofFig. 3. Close look of a high-peak-power ultrashort-pulse laser

Fig. 5. Phase-dependence of high harmonic spectra in soft X rays.

ISSP Activity Report 201753

Fig. 6. 10-MHz high harmonic generation in an enhancement cavity.

exploring a variety of coherent phenomena and non-equilibrium properties of excited states in condensed matters, incollaborations with research groups in charge of photoemission, operand-spectroscopy and extreme laser science. This
group covers a wide range of materials, from semiconductors, ferroelectrics, antiferromagnets, and superconductors
to biomaterials. Various ultrafast optics technologies suchas femtosecond luminescence, terahertz spectroscopy, andpump-and-probe transmission/reflection spectroscopy areapplied to studies on dynamics of photo-excited carriers
and photo-induced phase transitions. Coherent control ofmatters using phase-locked strong terahertz or mid-infrared
pulse is extensively studied. Advanced photonics devices areintensively studied, such as quantum nano-structure lasers
with novel low-dimensional gain physics, low-power lightstandard LEDs, very efficient multi-junction tandem solar
cells for satellite use, and wonderful bio-/chemi-luminescentsystems for wide bio-technology applications.

Synchrotron Radiation Laboratory
The Synchrotron Radiation Laboratory (SRL) was established in 1975 as a research division dedicated to solid statephysics using synchrotron radiation (SR). Currently, SRL is
composed of two research sites, the Harima branch and theE-building of the Institute for Solid State Physics.

Fig. 7. Pump-probed photoemission system using 60-eV laser

the strongly correlated materials are studied very well. On
the other hand, using pulsed laser light, the time-resolved
photoemission in fs region becomes powerful to know therelaxation process of photo-excited states of the materials.
Furthermore, by using CW laser with circular polarization
in VUV region, the photoelectron microscopy (PEEM) isdeveloped. The spatial resolution of nm resolution is very
powerful for the study of nanomagnetic materials.
• Coherent Photon Science GroupThe coherent-photon science group has main interests in

Fig. 8. Photonics devices under study: (left panel) semiconductor
quantum wires and (right panel) firefly-bioluminescence system
consisting of light emitter (oxyluciferin) and enzyme (luciferase)

54

ISSP Activity Report 2017

• Brilliant soft X-ray beamline at Harima branch
In 2006, the SRL staffs have joined the Materials
Research Division of the Synchrotron Radiation Research
Organization (SRRO) of the University of Tokyo and they
have played an essential role in constructing a new highbrilliant soft X-ray beamline, BL07LSU, in SPring-8. The
light source is the polarization-controlled 25-m long soft
X-ray undulator with electromagnetic phase shifters thatallow fast switching of the circularly (left, right) and linearly(vertical, horizontal) polarized photons.
The monochromator is equipped with a varied linespacing plain grating, which covers the photon energy range
from 250 eV to 2 keV. At the downstream of the beamline,
a lot of experimental stations have been developed forfrontier spectroscopy researches: five endstations, i.e. timeresolved soft X-ray spectroscopy (TR-SX) equipped with a

Fig. 1. TR-SX station

Fig. 2. 3D-nano ESCA station

Fig. 3. Soft X-ray emission station

Fig. 6. Laser-SARPES system at E-building

two-dimensional angle-resolved time-of-flight (ARTOF)
analyzer (Fig. 1), three-dimensional (3D) nano-ESCA stationequipped with the Scienta R-3000 analyzer (Fig. 2), highresolution soft X-ray emission spectroscopy (XES) stations(Fig. 3) are regularly maintained by the SRL staffs and open
for public use, and at free-port station many novel spectroscopic tools have been developed and installed such as soft
X-ray resonant magneto-optical Kerr effect (MOKE) (Fig.4)
and soft X-ray diffraction (Fig. 5), ambient pressure photoemission, two dimensional photoelectron diffraction and soon. The beamline construction was completed in 2009 and
SRL established the Harima branch laboratory in SPring-8.
At SPring-8 BL07LSU, each end-station has achieved highperformance: the TR-SX station have established the laserpump and SR-probe method with the time-resolution of 50
ps which corresponds to the SR pulse-width; the 3D nanoESCA station reaches the spatial resolution of 70 nm; the
XES station provides spectra with the energy resolution
around 70 meV at 400 eV and will enable real ambientpressure experiments in the near future. Soft X-ray resonant
MOKE station has been developed to make novel magnetooptical experiment using fast-switching of the polarizationcontrolled 25-m long soft X-ray undulator. The soft X-ray
diffraction station has been fully constructed and the timeresolved measurement is available by using lasers at the
TR-SX station. Each end-station has now been opened fully
to outside users. In 2015, 176 researchers made their experiments during the SPring-8 operation time of 4805 hours.

(SARPES) is a powerful technique to investigate the spindependent electronic states in solids. In FY 2014, Laser andSynchrotron Research Center (LASOR) SRL constructed
a new SARPES apparatus (Fig. 6), which was designed
to provide high-energy and -angular resolutions and highefficiency of spin detection using a laser light instead of thesynchrotron radiation in Institute for Solid State Physics. The
achieved energy resolution of 1.7 meV in SARPES spectra is
the highest in the world at present. From FY 2015, the new
SARPES system has been opened to outside users.
The Laser-SARPES system consists of an analysis
chamber, a carousel chamber connected to a load-lockchamber, and a molecular beam epitaxy chamber, which
are kept ultra-high vacuum (UHV) environment and areconnected each other via UHV gate valves. The electrons are
excited with 6.994-eV photons, yielded by 6th harmonic of a
Nd:YVO4 quasi-continuous wave laser with repetition rate of
120 MHz. The hemispherical electron analyzer is a custommade ScientaOmicron DA30-L, modified for installing thespin detectors. The spectrometer is equipped with two highefficient spin detectors associating very low energy electron
diffraction are orthogonally placed each other, which allows
us to analyze the three-dimensional spin polarization ofelectrons. At the exit of the hemispherical analyzer, a multichannel plate and a CCD camera are also installed, whichenables us to perform simultaneously the angle-resolved
photoelectron spectroscopy with two-dimensional (energymomentum) detection. So far, spin-dependent band structuresof more than 10 materials have been studied by 4 outsidegroups.

• High-resolution Laser SARPES at E-building
Spin- and angle-resolved photoelectron spectroscopy

Fig. 4. Soft X-ray MOKE station

Fig. 5. Soft X-ray diffraction
station

ISSP Activity Report 201755

Conferences and Workshops
The 5th Ito International Research Center Conference “Forefront of Molecular
Dynamics at Surfaces and Interfaces: from a Single Molecule to Catalytic Reaction”
November 20 - 23, 2017
J. Yoshinobu
In cooperation with Surface and Interface Spectroscopy Forum in Japan, the present international conference was held from
November 20 to 23, 2017 at Ito Hall of The University of Tokyo (Hongo campus), with the financial support of Ito International
Academic Research Center Foundation (The University of Tokyo), the RIKEN Centennial Anniversary Project, ISSP International Workshop, and ISSP Workshop. There were 196 participants, including 30 invited speakers, 13 contributed oral presentations and 109 poster presentations (133 participants from Japan including 19 invited speakers and 63 participants from abroad
including 15 invited speakers).
Chair of the executive committee was Prof. Jun Yoshinobu (ISSP) and Co-chair was Dr. Kim Yousoo (RIKEN); the othercommittee members were Prof. Shigeru Masuda (The University of Tokyo), Prof. Satoshi Watanabe (The University of Tokyo),Prof. Katsuyuki Fukutani (The University of Tokyo), Prof. Noriaki Takagi (The University of Tokyo), Prof. Junji Nakamura(Tsukuba University), Prof. Tadahiro Komeda (Tohoku University), and Dr. Ryuichi Arafune (NIMS).
Understanding the dynamics of atoms and molecules at surfaces and interfaces has been becoming increasingly important ina wide range of research fields from basic science to applied fields. Surfaces and interfaces play an important role in energy andmass transfer in materials. Application of nanotechnology in various industrial fields promotes the research for novel nanoscale
and/or low dimensional materials. In addition, the recent experimental and theoretical progress such as scanning probe microscopy, synchrotron radiation and laser spectroscopy, first-principles density functional theory calculation, etc. has made it
possible to elucidate and control the processes at surfaces in atomic scale.
This international conference focused on molecular dynamics at surface and interface. The oral and poster presentations
were performed concerning the following topics:· Physics and chemistry of adsorbed molecules· Low dimensional materials at surface and interface· Dynamical processes at model catalysts· Molecular processes at the surface and interface of devices· Elementary processes at solid-liquid interface.
Hot discussions were held not only during the symposium but also during tea-breaks and meals. During and after the
conference, we have received a lot of positive comments on the high-quality presentations and operations of the meeting. We
would like to acknowledge all the participants, the committees and secretaries.
The abstract booklet of this conference can be downloaded from the following URL;
http://yoshinobu.issp.u-tokyo.ac.jp/IIRC5_Program_booklet-Final.pdf

56

ISSP Activity Report 2017

Computational Materials Science —Now and the Future—

April 3 - 4, 2017
H. Noguchi, N. Kawashima, O. Sugino, H. Watanabe, S. Kasamatsu,
Y. Noguchi, S. Morita, T. Ohtsuki, A. Kitao, and Y. Morikawa

This workshop was organized for the computational condensed matter research community, especially for the users of the
ISSP supercomputers, to exchange the most recent information on the computational condensed matter research and on thehigh-performance computation of related research areas. This was held as a series of annual workshop of ISSP supercomputerthat has been held every year. The selected topics include thetarget of the post-K supercomputer project, the progress madein the elements strategy projects, the emergent data-driven
material research, and “the Project for advancement of software
usability in materials science” that developed the numericallibrary Kω to solve the shifted linear equation within the Krylov
subspace and numerical solver package mVMC of the manyvariable Variational Monte Carlo method in 2016. In addition to
16 invited talks and 30 poster presentations, two special lectures
for machine-learning were given by Prof. Masayuki Ohzeki and
Dr. Daisaku Yokoyama.

Small Angle Neutron Scattering, Neutron Reflectivity, and Neutron High-Resolution
Instruments

April 24 - 25, 2017
M. Shibayama, O. Yamamuro, and M. Hino

It has already passed more than 6 years since the shutdown of the
Research Reactor, JRR-3, due to the Great Earthquake on March 11, 2011.
During this period until today, demands of neutron scattering/reflectivity/
spectroscopy experiments for nanometer-order structural analyses and investigations of dynamics have been increasing rapidly than before. Neutron
Science Laboratory (NSL) held a workshop on instrumentations and stateof-art researches with small-angle neutron scattering, neutron reflectivity,and high energy-resolution instruments during the period of April 24 – 25,
2017. Since restart of JRR-3 was expected to be February, 2018, it wasa timely project and more than 100 scientists as total participated in thisworkshop during the two-day workshop. On Day 1, the workshop beganwith an introductory remarks by Prof. Takigawa, Director of ISSP, andProf. Shibayama, Director of NSL, followed by presentations by instrument scientists about the current status and future plansof each instrument. After these presentations, a summary talk and free discussions were given, where importance and necessity of collaborations between JRR-3 and J-PARC MLF, not only on organization level but also from educational viewpoints,
was emphasized. Then, a mixer was held in the lounge. On Day 2, scientific highlights from various fields were given, suchas polymers, composites, proteins, liquid structures, multi-ferroic solid materials, and structure transitions in liquids. In
general discussions and summary session, there were a few remarks were addressed: (1) importance of diversity of soft matterscience, but the necessityof viewpoints with universality, (2) how to improve
the general-use program ofneutron scattering, (3) how
to increase the number ofneutron users, (4) safety
and security issue. It was avery successful workshop
from various viewpoints,science, instrumentation,and general-use program.
The workshop was closed
by looking forward torestart of JRR-3.

ISSP Activity Report 201757

Frontier Science of Electronic Properties Observed/Manipulated by Light:
Strong Correlation, Topology, Low Dimension and Dynamics

June 12 - 14, 2017
T. Kondo, H. Wadati, H. Akiyama, and A. Kimura

The photoemission is a powerful technique to directly observe electronic structure of matter, and it has established itself as
an experimental tool commonly used in the research of condensed matter physics. While this trend on photoemission will be
continued in the future as well, further enhancement of capability in this technique is highly expected for younger generation.
Until now, it has been well accepted that the discovery of new materials such as high temperature superconductors and topological insulators, and the following observations of superconducting gap and spin-polarized texture in these have boosted thedevelopment of photoemission technique. Together with the demand to investigate these physical properties, the photoemission
has also forcefully evolved forward keeping in step with the progress of advanced light source. In recent years, synchrotron andlaser, which has been being developed independently with each other, are getting overlapped in the range of photon energy. We
have now entered an era in which researchers can freely select these light sources to use in a cross-sectoral manner, dependingon each experimental purpose. A dream to cutting edge research on materials science with photoemission will greatly expand
as long as one makes the most use of "coherence", "polarization", and "pulse", the three biggest advantages for controlled light.
Based on these background, in this work shop, active young researchers have gathered in ISSP to discuss the potential andcapability of photoemission and how to utilize it for the future materials science.

Recent Progress in the Research of the 5d Pyrochlore Oxides

August 2, 2017
T. C. Kobayashi and Z. Hiroi

The workshop was planned as an opportunity for researchers working on various 5d transition metal pyrochlore oxides to
get together and discuss their recent progress. The 5d pyrochlore oxides are now well recognized as interesting playgrounds
for novel physics associated with spin–orbit coupling. The Weyl semimetal behavior and the all-in–all-out magnetic order are
observed in Ln2Ir2O7 and Cd2Os2O7, in which also electron correlations play an important role. The spin–orbit coupled metal
Cd2Re2O7 is another hot topics, which may exhibit mutipole orders and parity-mixing superconductivity. Other pyrochlore
oxide CsW2O6 with the 5d 0.5 electron configuration seems
to be a candidate for the molecular orbital crystal withtrimerization. Approximately 40 people joined the meeting.
The workshop gave a wonderful opportunity for attendees
to understand the present status and to imagine the future
prospect of the 5d pyrochlore oxides.

58

ISSP Activity Report 2017

The 9th APCTP Workshop on Multiferroics

November 9 - 11, 2017
T. Kimura, T. Arima, and M. Tokunaga

The APCTP Workshop on Multiferroics started at the headquarter of Asia Pacific Center for Theoretical Physics (APCTP)
at Pohang in 2008 and has continued as an annual event for the last several years. It has successfully brought together themost active members in the field of multiferroics and continues to enhance the strength of collaboration in the international
community, particularly in APCTP member countries. In 2017, the 9th workshop was held at Kashiwa campus, University ofTokyo. We had 23 invited talks (14 from APCTP member countries and 9 from non-APCTP member countries), 6 contributed
talks (4 from Japan and 2 from non-APCTP member countries), and 55 poster presentations mainly by graduate students andyoung researchers. During the three days, participants of the workshop actively discussed various topics related to multiferroic
research such as fundamental understandings of known multiferroics, syntheses of new multiferroics, fabrications of multiferroics/ferroelectrics with new functionalities, multiferroic domain engineering, and explorations of new functionalities (e.g.,
electric control of magnetism and nonreciprocal phenomena) in multiferroics. Furthermore, we had a special session during
the reception where all the participants frankly discussed the future direction of multiferroic research. During and after theworkshop, we received a number of positive comments from the participants. Some of them mentioned that they are going tostart collaboration work with other participants. Some young participants acknowledged our financial supports (or no registration fee). From these comments from participants, we consider to achieve the purpose of the workshop.

ISSP Activity Report 201759

ISSP - J-PARC Joint Workshop on Science Frontier by Neutron Scattering:
The 16th Korea-Japan Meeting on Neutron Science

January 8 - 10, 2018
T. Masuda, M. Shibayama, K. Nakajima, and H. Seto

Neutron scattering research in wide field was discussed by Korean and Japanese scientists. The workshop consists of thefollowing contents: (i) facility reports (ii) magnetism and strongly correlated electrons (iii) industrial use (iv) instruments,
software, and advanced data analysis (v) Biological and soft matter and (vi) liquid. In the facility report, current status ofneutron science laboratory institute for solid state physics (NSL-ISSP) was reported by the director Prof. M. Shibayama.
During the long shut down of JRR-3, NSL-ISSP supports the travel budget for neutron experiments in foreign facilities for
JRR-3 users. About high-resolution chopper spectrometer (HRC) cooperated by NSL-ISSP and KEK, combination of various
sample environment devices, upgrade of Fermi chopper, and the increase of the beam power of J-PARC made the HRC efficient
instrument, and the scientific productivity has been improved. Status of other neutron facilities were presented by the directors. Research topics including observation of magnon-phonon coupling in manganites by Je-Geun Park, Kitaev quantum spin
liquid by S. Ji, and small angle neutron scattering on skyrmion by T. Nakajima were reported in the field of magnetism. Uniqueneutron techniques such as neutron holography for the investigation of local atomic structures by K. Ohyama were introduced.
In the field of soft matter science, structure analysis of critical gelation cluster by X. Li, neutron reflectivity measurements for
diffusion dynamics of polymer melts by J. Koo, and many interesting talks were presented. In total 28 of oral and 32 of poster
presentations were made by Korean and Japanese scientists, and the participants had fruitful discussions.

Status of SPring-8 BL07LSU and Strategies to Genesis of the Next-Generation Soft
X-ray Science

March 13, 2018
I. Matsuda, S. Shin, F. Komori, Y. Harada, and H. Wadati

Synchrotron radiation laboratory at the Harima branch develops the frontier science at high-brilliance soft X-ray beamline
BL07LSU at SPring-8 and makes the experimental innovations with domestic and foreign users. We have performed timeresolved, spatial-resolved and energy-resolved soft X-ray spectroscopy to study electronic states and their dynamics of newmaterials. Recently, we have also carried out operando experiments to examine functional materials under the working conditions. This year, we celebrate 10 years since construction of the beamline, reaching a milestone to consider the next project. On
the other hand, new light sources, such as XFEL or a diffraction limited storage ring, are recently encouraged to be designed
and to be constructed over the world. In Japan, we have plans of Slit-J and SPring-8-II. Since science and techniques, developed
at BL07LSU, are closely related to experiments expected to be held at such new generation synchrotron radiation sources, it isalso high time to consider the next soft X-ray science. Thus, we organized this ISSP workshop to present our recent achievements and to discuss the strategies with participants.
We had two invited talks by two outstanding researchers. Prof. Kotsugi prospected the future of synchrotron radiation
researches and Dr. Katayama presented his recent results at SACLA. Speakers talked about their recent results from each end
station (time-resolved spectroscopy, 3D nano-ESCA, emission spectroscopy, ambient pressure XPS and so on). During thediscussion time, we shared
information on the frontierresearches of synchrotron radiation in various fields, physics,
chemistry, and biology. Eventually, we were able to makethe clear vision for the nextgeneration soft X-ray science at
BL07LSU and at new storagerings. We also encouraged ayoung researcher by awarding
the best poster prize.

60

ISSP Activity Report 2017

ISSP Activity Report 2017

61

62

Subjects of Joint Research

ISSP Activity Report 2017

平成 29 年度

共同利用課題一覧（前期）/ Joint Research List (2017 First Term)

嘱託研究員 / Commission Researcher
No.

課題名

担当所員：森

氏名

所属

Title

Name

Organization

初果
大学院生命ナノ
Theoretical study of phase transition mechanism induced by
システム科学研
H/D isotope effect in hydrogen-bonded molecular conductors
究科1

水素結合型分子導体における H/D 同位体効果による相転移機構の理論的研究

立川仁典

横浜市立大学

2

〃

長嶋

雲兵

計算科学振興財 共用促進研究部
団
門

3

常圧で金属状態を示す純有機単一成分導体の開
発

御崎

洋二

愛媛大学

4

純有機単一成分超伝導体の開発

白旗

崇

愛媛大学

担当所員：中辻

Masanori Tachikawa

Yokohama City
Uninersity

Umpei Nagashima

Foundation for
Computational Science

大学院理工学研 Development of purely organic single-component molecular
metals under ambient pressure
究科

Kenta Kimura

Ehime University

大学院理工学研 Development of purely organic single-component molecularsuperconductors
究科Takashi Shirahata

Ehime University

Theoretical study on anomalous metal phase due to quantum
valence instability

Kazumasa Miyake

Toyota Rikagaku
Kenkyuujyo

〃

知

5

価数揺らぎに伴う量子臨界点とその近傍の異常
物性の研究

三宅

和正

豊田理化学研究所

6

フラストレート磁性体における量子物性の探求

木村

健太

大阪大学

大学院基礎工学
The search for quantum state in frustrated magnets
研究科

Kenta Kimura

Osaka University

7

イッテルビウム系重い電子化合物の結晶場基底
状態の研究

久我

健太郎

理化学研究所

放射光科学総合 Crystal-electric-field ground state study in Yb-based heavy
fermion compound
研究センター

Kentarou Kuga

RIKEN

岡田

佳憲

東北大学

原子分子材料科 Low-temperature STM study on weak topological insulator
candidate Bi4I4
学高等研究所

Yoshinori Okada

Tohoku University

担当所員：長谷川8

幸雄

弱トポロジカル絶縁体候補物質 Bi4I4 の低温
STM 観察No.

課題名担当所員：上床

氏名

所属

Title

Name

Organization

美也

9

高圧下量子振動システムの開発

摂待

力生

新潟大学

10

磁性体の圧力効果

巨海

玄道

11

多重極限関連圧力装置の調整

高橋

12

擬一次元有機物質の圧力下物性研究

13

3d 遷移化合物に関する圧力効果

14

理学部

ISSP Activity Report 2017

Development of quantum oscillation under high pressure

Rikio Settai

Niigata University

久留米工業大学 工学部

Effect of pressure on the Magnetic Materials

Gendo Oomi

Kurume Institute ofTechnology

博樹

日本大学

文理学部

Adjustment of Cubic Anvil apparatus

Hiroki Takahashi

Nihon University

糸井

充穂

日本大学

医学部

Study on pressure induced superconductivity of quasi organic
conductor

Miho Itoi

Nihon University

鹿又武

東北学院大学

工学総合研究所 Eiffect of pressure on the 3d transition compounds

Takeshi Kanomata

Tohoku Gakuin
University

希釈冷凍機温度で使用可能な 10GPa 級超高圧発
松林生装置の開発和幸

電気通信大学

大学院情報理工 Development of 10 GPa class high pressure apparatus for low
temperature
学研究科

KazuyukiMatsubayashi

The University
of ElectroCommunications

15

有機伝導体の圧力効果

村田惠三

大阪経済法科大 21 世紀社会総
Effect of pressure on the organic conductor
学
合研究センター

Keizo Murata

Osaka University of
Economics and Law

16

圧力下 NMR 測定法に関する開発

藤原

直樹

京都大学

大学院人間・環 Development of NMR measurement method under highpressure
境学研究科

Naoki Fujiwara

Kyoto University17

高圧下の比熱測定装置の開発

梅原

出

横浜国立大学

工学部

Izuru Umehara

Yokohama National
University18

希土類 122 化合物における圧力効果

繁岡

透

山口大学

大学院理学研究
Pressure effect of rare earth 122 compounds
科

Toru Shigeoka

Yamaguchi University

19

中性子回析に用いる圧力装置の開発

片野

進

埼玉大学

大学院理工学研
Developments of High Pressure Cell for Neutron Diffraction
究科

Susumu Katano

Saitama University

20

低温用マルチアンビル装置の開発

辺土

正人

琉球大学

理学部

Masato Hedo

University of the
Ryukyus21

磁化測定装置の開発

名嘉節

物質・材料研究 機能性材料研究
Development of the magnetometer機構
拠点Takashi Naka

National Institute forMaterials Science星健夫

担当所員：野口Development of apparatus for specific heat measurements
under high pressure

Development of multi-anvil apparatus for low temperature

博司

63

22

理論・実験・データ科学の融合を目指した量子格子模型シミュレータの開発

23

〃

曽我部

知広

鳥取大学

大学院工学研究 Development of quantum lattice model simulator integrating
theory, experiment, and data science科

Takeo Hoshi

Tottori University

名古屋大学

大学院工学研究
科

Tomohiro Sogabe

Nagoya University〃

64
ISSP Activity Report 2017

No.

課題名

氏名

24

動的平均場近似に基づく第一原理計算パッケー
ジの高度化

大槻

純也

25

〃

品岡

26

4G における共同利用推進

27

所属

Title

Name

Organization

東北大学

大学院理学研究 Advancement of ab-initio program based on dynamical meanJyunya Otsuki
field theory
科

Tohoku University

寛

埼玉大学

理学部

Hiroshi Shinaoka

Saitama University

佐藤

卓

東北大学

多元物質科学研
Research and Support of General-Use at 4G
究所

Taku Sato

Tohoku University

〃

奥山

大輔

東北大学

多元物質科学研究所〃

Daisuke Okuyama

Tohoku University

28

〃

那波

和宏

東北大学

多元物質科学研究所〃

Kazuhiro Nawa

Tohoku University

29〃

Johannes
Reim

東北大学

多元物質科学研究所〃

Johannes Reim

Tohoku University

30

6G における共同利用推進

富安

啓輔

東北大学

大学院理学研究
Research and Support of General-Use at 6G科

Keisuke Yomiyasu

Tohoku University

31

〃

岩佐

和晃

茨城大学

フロンティア応
用原子科学研究センター

Kazuaki Iwasa

Ibaraki University

藤田

全基

東北大学

金属材料科学研
Research and Support of General-Use at T1-2 and T1-3
究所

Masaki Fujita

Tohoku University〃

担当：中性子科学研究施設

32

T1-2、T1-3 における共同利用推進

〃

33

〃

南部

雄亮

東北大学

金属材料科学研究所〃

Yusuke Nambu

Tohoku University

34

〃

池田

陽一

東北大学

金属材料科学研究所〃

Yoichi Ikeda

Tohoku University

35

〃

鈴木

謙介

東北大学

金属材料科学研究所〃

Kensuke Suzuki

Tohoku University

木村

宏之

東北大学

多元物質科学研
Research and Support of General-Use at T2-2
究所

Hiroyuki Kimura

Tohoku University

坂倉

輝俊

東北大学

多元物質科学研究所

Terutoshi Sakakura

Tohoku University

36
37

T2-2 における共同利用推進
〃

〃

38

C1-2 における共同利用推進

杉山

正明

京都大学

原子炉実験所Research and Support of General-Use at C1-2

Masaaki Sugiyama

Kyoto University39

C1-2、C2-3-1、C3-1-2 における共同利用推進

井上

倫太郎

京都大学

原子炉実験所Research and Support of General-Use at C1-2, C2-3-1 andC3-1-2

Rintaro Inoue

Kyoto University

No.

課題名

氏名

所属

Title

Name

Organization

Masahiro Hino

Kyoto University40

C3-1-2、C2-3-1 における共同利用推進

日野

正裕

京都大学

原子炉実験所41

C3-1-2 における共同利用推進

田崎

誠司

京都大学

大学院工学研究
Research and Support of General-Use at C3-1-2科

Seiji Tasaki

Kyoto University42

C1-3-mfSANS における共同利用推進

古坂

道弘

北海道大学

大学院工学研究
Research and Support of General-Use at C1-3-mfSANS
科

Michihiro Furusaka

Hokkaido University

Research and Support of General-Use at C3-1-2 and C2-3-1

43

〃

大沼

正人

北海道大学

大学院工学研究科〃

Masato Ohnuma

Hokkaido University

44

〃

間宮

広明

物質・材料研究 量子ビームユニ
機構
ット

〃

Hiroaki Mamiya

National Institute forMaterials Science

45

〃

藤原

健

産業技術総合研 計量標準総合セ
究所
ンター

〃

Takeshi Fujiwara

National Institute ofAdvanced Industrial
Science and Technology

46

C1-3、C3-1-2 における共同利用推進

北口

雅暁

名古屋大学

大学院理学研究
Research and Support of General-Use at C1-3 and C3-1-2科

Masaaki Kitaguchi

Nagoya University47

C1-3 における共同利用推進

清水

裕彦

名古屋大学

大学院理学研究
Research and Support of General-Use at C1-3科

Hirohiko Shimizu

Nagoya University

ISSP Activity Report 2017

65

48

〃

広田

克也

名古屋大学

大学院理学研究
科〃

Katsuya Hirota

Nagoya University

49

〃

土川

雄介

名古屋大学

理学研究科

〃

Yusuke Tsuchikawa

Nagoya University

50

〃

山形

豊

理化学研究所

光量子工学研究
領域〃

Yutaka Yamagata

RIKEN

51

スピン分解角度分解光電子分光による TaSi2 のスピン構造の研究

伊藤

孝寛

名古屋大学

シンクロトロン
Spin-resolved angle-resolved photoemission study of spin
光科学研究セン
texture of TaSi2
ター

Takahiro Ito

Nagoya University52

高温超伝導体の高分解能光電子分光

藤森

淳

東京大学

大学院理学系研 Ultra-high resolution photoemission spectroscopy on high Tc
superconductor
究科

Atsushi Fujimori

The University of
Tokyo

53

60-eV レーザーを用いた時間分解光電子分光の
開発

石坂

香子

東京大学

大学院工学系研 The development of time-resolved photoemission using 60 eV
laser
究科

Kyoko Ishizaka

The University of
Tokyo

54

鉄系超伝導体のレーザー光電子分光

下志万

理化学研究所

創発物性科学研
Laser-ARPES on Fe superconductor
究センター

Takahiro Shimojima

The University of
Tokyo

55

高分解能光電子分光による強相関物質の研究

横谷

岡山大学

大学院自然科学
Ultra-high resolution study on strongly correlated materials
研究科

Takayoshi Yokoya

Okayama University

担当所員：辛

埴

貴博
尚睦

66

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

Kaname Kanai

Tokyo University of
Science

日本原子力研究 物質科学研究セ Ultra high resolution photoemission study on heavy fermion
uranium compounds
開発機構
ンター

Shinichi FujimoriJapan Atomic Energy
Agency俊輔

物質・材料研究 機能性材料研究
Laser-Photoemission Study on Oxide Films
機構
拠点

Shunsuke Tsuda

National Institute forMaterials Science

大川

万里生

東京理科大学

理学部

Time resolved Photoemission on Mn compounds

Mario Okawa

Tokyo University of
Science

収差補正型光電子顕微鏡の建設と利用研究

小嗣真人

東京理科大学

基礎工学部

Construction and utilization research of aberration correction
photoelectron emission microscopy

Masato Kotsugi

Tokyo University of
Science61

時間分解・マイクロビームラインの開発と研究

室

Takayuki Muro

Japan Synchrotron
Radiation Institute62

光電子分光法を用いた各種分子性結晶の電子状態の研究及び装置の低温化

木須

孝幸

大阪大学

大学院基礎工学 Research on electronic states of molecular crystals using
photoemission spectroscopy
研究科

Takayuki Kisu

Osaka University

63

トポロジカル絶縁体の電子状態の解明

木村

昭夫

広島大学

大学院理学研究
Electronic-structure study of topological insulators
科

Akio Kimura

Hiroshima University

64

時間分解光電子分光を用いた強相関係物質の研
究

溝川

貴司

早稲田大学

理工学術院

Takashi Mizokawa

Waseda University

65

トポロジカル超伝導体の探索

坂野

昌人

東京大学

大学院工学系研Search for topological superconductors
究科

Masato Sakano

The University of
Tokyo

薄倉

淳子

東京理科大学

理学部

Junko UsukuraTokyo University of
Science

大学院理学研究 Technical development of spin-resolved photoemission
spectroscopy measurement科

Akio Kimura

Hiroshima University

Taguchi Munetaka

Nara Instituteof Science andTechnology

Masato Kotsugi

Tokyo University of
Science56

有機化合物の光電子分光

金井要

東京理科大学57

重い電子系ウラン化合物の高分解能光電子分光

藤森

伸一

58

レーザー光電子分光による酸化物薄膜の研究

津田59

Mn 化合物の時間分解光電子分光

60

担当所員：秋山
66

Photoemission study on organic compounds

高輝度光科学研 利用研究促進部
Development of micro- and time-resolved beamline究センター
門Time-resolved photoemmission study on strongly-correlatedmaterials

英文水溶液における新奇ケージドルシフェリンの安定構造の解明担当所員：松田隆桂之

理工学部

Elucidation of stability for newfangled caged luciferin inaqueous solution

巌

67

スピン分解光電子分光の測定技術開発

木村

昭夫

広島大学

68

共鳴磁気光学カー効果の散乱理論研究田口宗孝

奈良先端科学技 物質創成科学研 Study of scattering theory for the resonant magneto-optical
Kerr effect術大学院大学究科

69

時間分解磁気光学実験の技術開発

小嗣真人

東京理科大学担当所員：原田慈久

基礎工学部

Technical development of time-resolved magneto-opticalexperiment

No.

課題名

70

液中プラズマ印加水の軟 X 線吸収 / 発光分光技
術開発

寺嶋

和夫

東京大学

大学院新領域創 Technical development of soft X-ray absorption/emission
spectroscopy for water processed by in-liquid plasma
成科学研究科Kazuo Terashima

The University of
Tokyo

71

液中プラズマ印加によるナノ粒子分散特性評価と軟 X 線分光

伊藤

剛仁

東京大学

大学院新領域創 Characterization of nano-particle distribution in water
processed by in-liquid plasma and soft X-ray spectroscopy
成科学研究科Tsuyohito Ito

The University of
Tokyo

72

二次元原子薄膜トランジスタの電子状態のナノ分析 ( Ⅰ T)

吹留

博一

東北大学

電気通信研究所 Nanoscale analysis of electronic states of graphene device

Hirokazu Fukidome

Tohoku University73

軟 X 線発光・共鳴非弾性散乱分光の磁気円・線二色性測定システムの構築

菅

大阪大学

産業科学研究所

Shigemasa Suga

Osaka University74

軟 X 線吸収／発光分光法によるリチウムイオン
電池電極材料の電子物性研究

細野英司

産業技術総合研 省エネルギー研 Study on the electronic property of electrode materials for Liion batteries by soft X-ray absorption/emission spectroscopy
究所
究部門

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

75

〃

朝倉

大輔

産業技術総合研 省エネルギー研
究所
究部門

Daisuke Asakura

National Institute ofAdvanced Industrial
Science and Technology

76

高分解能光電子分光による酸化バナジウムの研
究

藤原

秀紀

大阪大学

大学院基礎工学
Study on vanadium oxides by high resolution photoemission
研究科

Hidenori Fujiwara

Osaka University

77

省エネ・創エネ・蓄電デバイスのオペランド分
光

尾嶋

正治

東京大学

放射光分野融合 Operando nano-spectroscopy for energy efficient, power
generation and energy storage devices
国際卓越拠点Masaharu Oshima

The University ofTokyo

大学院工学研究 Dynamics of valence transition in EuNi2（Si1-xGex)2 revealedby time-resolved XAS
科

Kojiro Mimura

Osaka Prefecture
University

担当所員：和達

氏名

滋正

所属

Title

Construction of a noble system for circular and linear
dichroism in soft X-ray emission and RIXS spectroscopy

〃

Name

Organization

大樹

ISSP Activity Report 201778

時間分解吸収分光による EuNi2（Si1-xGex)2 の価
三村
数転移ダイナミクスの解明

功次郎

大阪府立大学79

三次元 nanoESCA による実デバイスのオペラン
永村
ド電子状態解析直佳

物質・材料研究 先端材料解析研 Operando analysis of the electronic structure of actual devices
Naoka Ngamura
by 3DnanoESCA
機構
究拠点

80

共鳴軟Ｘ線散乱を用いた外場下での電子秩序状
態の解明

裕一

東京大学

山崎

大学院工学系研 Observation of electric ordered state under external field byresonant soft x-ray scattering
究科

Yuichi Yamasaki

National Institute forMaterials Science
The University ofTokyo

一般研究員 / General Researcher
No.

課題名

担当所員：榊原

氏名

所属

Title

Name

Organization

俊郎

67

1

強相関電子系化合物の秩序相に対する結晶対称性および電子軌道の効果

横山

淳

茨城大学

理学部

2

〃

鈴木

康平

茨城大学

理学部

Effects of crystal symmetry and electronic state in orderedphase of strongly correlated electron systems〃

Makoto Yokoyama

Ibaraki University

Kohei Suzuki

Ibaraki University

68

No.

課題名

氏名

所属

ISSP Activity Report 20173

超伝導対のギャップ対称性を決定する実験的、理
町田
論的研究

一成

立命館大学

4

(Th, U)Ru2Si2 混晶系の電子状態

芳賀

芳範

松本

5

〃

Title

Organization

Kazunari Machida

Ritsumeikan
University

日本原子力研究 先端基礎研究セElectronic states in (Th, U)Ru2Si2 alloy system
開発機構
ンター

Yoshinori Haga

Japan Atomic Energy
Agency裕司

名古屋工業大学 工学研究科機能
大学院
工学専攻

Yuji Matsumoto

Nagoya Institute ofTechnology

Yuji Matsumoto

Nagoya Institute ofTechnology

理工学部

Experimental and theoretical studies on gap symmetry
determination in superconductors

Name

〃

6

単結晶 YbNi2Si2 の極低温磁場中比熱測定

松本裕司

名古屋工業大学 工学研究科機能 Specic heat measurements under magnetic fields for single
crystal YbNi2Si2 at low temperature
大学院
工学専攻

7

新規電荷移動錯体の低温物性測定山口博則

大阪府立大学

大学院理学系研 Low temperature physical properties of new charge-transfer
complexs
究科

Hironori Yamaguchi

Osaka Prefecture
University

岡部俊輝

大阪府立大学

大学院理学系研
究科

Toshiki Okabe

Osaka Prefecture
University

9

U1-xThxBe13 を含むウラン系超伝導体における極清水
低温比熱・磁化測定

悠晴

東北大学

Yusei Shimizu

Tohoku University

10

磁気フラストレートした一次元量子スピン系
Rb2-xCsxCu2Mo3O12(x=0.2, 0.3) の磁気的基底状態

Low-temperature heat-capacity and magnetization
金属材料研究所 measurements for U1-xThxBe13 and other uranium
superconducting systems

安井

幸夫

明治大学

理工学部

Magnetic Behavior of Magnetically Frustrated One-dimensional
Yukio Yasui
Quantum Spin System Rb2-xCsxCu2Mo3O12(x=0.2, 0.3)

Meiji University

宏

東京理科大学

理工学部

Transport Properties of Bi and Bi1-xSbx Alloys in Magnetic
FieldsHiroshi Yaguchi

Tokyo University of
Science

東京理科大学

大学院理工学研
究科

Ryo Ninohira

Tokyo University of
Science

Hiroshi Yaguchi

Tokyo University of
ScienceShouichi Kitazawa

Tokyo University of
Science

Hiroaki Shishido

Osaka Prefecture
University

Study of cross-correlation between spin flow and electric fieldin superfluid 3He

Keiya Shirahama

Keio University〃

Satoshi Murakawa

The University of
Tokyo

8

〃

担当所員：長田俊人

11

ビスマスおよびビスマス・アンチモン混晶の磁場中輸送特性

矢口

12

〃

仁野平

13

トポロジカル絶縁体の磁場中輸送特性の測定

14〃

担当所員：山下

〃

諒

矢口

宏

東京理科大学

理工学部

北澤

翔一

東京理科大学

大学院理工学研
究科〃
Measurements of Transport Properties of TopologicalInsulators in Magnetic Fields
〃

穣

15

超低温における dHvA 効果測定

宍戸寛明

大阪府立大学

大学院工学研究dHvA effect measurements at ultra-low temperatures科16

超流動 3He 中のスピン流と電場の交差相関の探
索

白濱

圭也

慶應義塾大学

理工学部

17

〃

村川

智

東京大学

低温センター

No.

課題名

18

〃

山口

明

兵庫県立大学

大学院物質理学研究科〃

Akira Yamaguchi

University of Hyogo

19

〃

永合

祐輔

慶應義塾大学

理工学部〃

Yusuke Nago

Keio University

20

〃

海谷

航平

慶應義塾大学

理工学部〃

Kohei Kaiya

Keio University

割澤

伸一

東京大学

大学院新領域創Research on nano sensing devices
成科学研究科

Shinichi Warisawa

The University ofTokyo

担当所員：勝本
21

氏名

所属

Title

Name

Organization

信吾

ナノセンシングデバイスに関する研究

22

〃

上木

瞭太郎

東京大学

大学院新領域創成科学研究科〃Ryotaro Ueki

The University of
Tokyo

23

〃

根本

啓行

東京大学

大学院新領域創成科学研究科〃

Hiroyuki Nemoto

The University of
Tokyo

24

Si(111) √ 3 ×√ 3-B 基板上に成長した Bi(110) 超薄膜の電子状態中辻寛

東京工業大学

物質理工学院

Electronic structure of Bi(110) thin films grown on Si(111) √ 3
×√ 3-B substrates

Kan Nakatsuji

Tokyo Institute ofTechnology

25

トポロジカル近藤絶縁体候補物質 SmB6(111) の表面原子構造と局所電子状態

大坪

嘉之

大阪大学

大学院生命機能 Surface atomic strucutre and local electronic states of
SmB6(111), a candidate of topological Kondo insulator
研究科

Yoshiyuki Ohtsubo

Osaka University

26

金属／半導体表面上の超薄膜およびナノ構造薄膜の磁化ダイナミックスの磁気光学的測定

河村紀一

日本放送協会

放送技術研究所

Study on magnetic dynamics of ultra-thin films and nanostructures on metal / semiconductor surfaces

Norikazu Kawamura Nippon Hoso Kyokai

27

レアメタルフリー磁性材料 L10-FeCo の磁気特
性の解析

小嗣

真人

東京理科大学

基礎工学部

Analysis of magnetic properties of rare-metal-free supermagnet "L10-FeCo"

Masato Kotsugi

28

Ge 表面における光誘起半導体ー金属構造相転移
金崎の電子論的解明順一

大阪大学

産業科学研究所

Electronic investigation of photo-induced semiconductor-metal
Jun'ichi Kanasaki
transformation on Ge(001) surface

Osaka University

29

Al-Pd-Ru 準結晶・近似結晶における空孔濃度の
金沢
研究

育三

東京学芸大学

自然科学系

Positron-annihilation studies of Al-Pd-Mn quasicrystal and its
approximant crystals

Ikuzo Kanazawa

Tokyo Gakugei
University

担当所員：小森

文夫

ISSP Activity Report 2017

Tokyo University of
Science

69

30

〃

中島

諒

東京学芸大学

大学院教育学研
究科〃

Makoto Nakajima

Tokyo Gakugei
University

31

〃

木村

薫

東京大学

大学院新領域創成科学研究科〃

Kaoru Kimura

The University of
Tokyo

32

〃

大島

永康

産業技術総合研 分析計測標準研
究所
究部門

〃

Nagayasu Oshima

National Institute ofAdvanced Industrial
Science and Technology

70

No.
33

課題名

ISSP Activity Report 2017

SiC 表面上の２次元 Sn 層の構造および電子状態
田中
の解明

34
35

氏名

〃
グラフェンナノリボンの電子状態の観察

36

〃

37

グラフェンナノリボンの STM/STS による解析

38〃

担当所員：𠮷信

所属

Title

Name

Organization

九州大学

大学院工学研究
Analyses of 2D-Sn and Pb layers on SiC surfaces
院

Satoru Tanaka

Kyushu University

真吾

九州大学

大学院工学府Kengo Hayashi

Kyushu University

林

悟

〃

田中

悟

九州大学

大学院工学研究
Analysis of electronic structures in graphene nanoribbons
院

Satoru Tanaka

Kyushu University

安藤

寛

九州大学

大学院工学府

Hiroshi Ando

Kyushu University

ビシコフスキー アントン

九州大学

大学院工学研究
Analyses of graphene nanoribbons by STS/STS
院

Visikovskiy Anton

Kyushu University

福間

洸平

九州大学

大学院工学府Kouhei Fukuma

Kyushu University

〃

〃

淳

39

p 型窒化ガリウム薄膜の作製と評価

山田

太郎

東京大学

大学院工学系研 Fabrication and physical investigation of p-type gallium nitride
Taro Yamada
thin films
究科

The University of
Tokyo

40

Si(001) 表面上の準安定共吸着過程の透過 FTIR
測定

大野

真也

横浜国立大学

大学院工学研究 FTIR measurements of metastable physisorption processes on
Si(001)
院

Shinya Ohno

Yokohama National
University

41

〃

高柳

周平

横浜国立大学

理工学部

Shuhei Takayanagi

42

銅上の単層グラフェンの高分解能電子エネルギ
ー損失分光

田中

慎一郎

大阪大学

産業科学研究所

High resolution electron energy loss spectroscopy for graphene
Shinichiro Tanaka
on Cu

Osaka University43

直鎖アルカン分子の物理吸着によって生じる
Au(111) ショックレー状態の変化と吸着構造

金井要

東京理科大学

理工学部

Modification of Au(111) Shockley state upon physisorption ofn-alkanes and the adsorbed structures

Kaname Kanai

Tokyo University of
Science

Hirotaka Mizushima

Tokyo University of
Science

〃

44

〃

水島

啓貴

東京理科大学

大学院理工学研
究科45

赤外吸収による水素終端 Si(110)-(1 × 1) 微傾斜
表面の H-Si 伸縮振動モードの解明

須藤

彰三

東北大学

H-Si stretching modes on the hydrogen-terminated大学院理学研究Si(110)-(1 × 1) vicinal surface studied by infrared absorption
科
spectroscopy

Shozo Suto

Tohoku University

46

〃

江口

豊明

東北大学

大学院理学研究科〃

Toyoaki Eguchi

Tohoku University

47

〃

河野

純子

東北大学

大学院理学研究
科〃

Junko Kono

Tohoku University

担当所員：長谷川

幸雄

〃

No.

課題名

48

エピタキシャルシリセン、ゲルマネン及びそのヘテロ構造の低温走査トンネル顕微鏡観察

49

〃

氏名
高村

由起子

アントワーヌ
フロランス

所属

Title

Name

Organization
Japan Advanced
Institute of Scienceand Technology

北陸先端科学技 マテリアルサイ STM investigation of epitaxial silicene, germanene, and theirheterostructures
術大学院大学
エンス系

Yukiko Takamura

北陸先端科学技 マテリアルサイ術大学院大学
エンス系

Antoine Fleurence

Japan Advanced
Institute of Scienceand Technology〃

50

Si(001) 表面上の Na 原子吸着の極低温 STM 観察 鈴木

孝将

福岡大学

工学部

ELT-STM study of Na atom adsorption on Si(001) surface

Takayuki Suzuki

Fukuoka University

51

重い電子系超伝導の実空間観察のための超低温・河江
強磁場の小型 STM の開発

達也

九州大学

Development of a miniature STM for low-temperature
大学院工学研究and high-magnetic-field measurements of heavy fermion
院
superconductors

Tatsuya Kawae

Kyushu University

Masanobu Shiga

Kyushu University

Masahiro Haze

Kyoto University

52

〃

志賀

雅亘

九州大学

大学院工学府53

走査トンネル顕微鏡を用いたトポロジカル物質のナノスケール観察

土師

将裕

京都大学

大学院理学研究 Topological materials science studied by scanning tunnelingmicroscopy
科

担当所員：リップマー〃

ミック

ISSP Activity Report 2017

LaAlO3/SrTiO3 ヘテロ界面金属層における Co
ドープの影響李55

傾斜組成エピタキシャル強誘電体薄膜の構造と
物性

丸山

伸伍

東北大学

大学院工学研究 Structural and physical property characterization of gradedcomposition epitaxial ferroelectric thin films
科

Shingo Maruyama

Tohoku University

56

〃

松本

祐司

東北大学

大学院工学研究
科〃

Yuji Matsumoto

Tohoku University

57

〃

原田

龍馬

東北大学

大学院工学研究
科〃

Ryoma Harada

Tohoku University

トンネル構造を有したジントル化合物の低温物
性評価

山田

高広

東北大学

多元物質科学研 Characterization of electric and magnetic properties of Zintl
compounds with tunnel structures
究所

Takahiro Yamada

Tohoku University

担当所員：廣井58

担当所員：川島美希

奈良先端科学技 物質創成科学研
Effects of the doped Co in the LaAlO3/SrTiO3 metallic interface Mihee Lee
術大学院大学
究科

Nara Insttituteof Science andTechnology

54

善二

直輝

59

テンソルネットワーク法の新奇な応用

原田

健自

京都大学

大学院情報学研
New application of tensor network schemes
究科

Kenji Harada

Kyoto University

60

蜂の巣格子 Heisenberg-Kitaev 磁性体 RuCl3 の
磁気励起

鈴木

隆史

兵庫県立大学

大学院工学研究 Magnetic excitations of honeycomb-lattice Heisenberg-Kitaev
magnets RuCl3
科

Takafumi Suzuki

University of Hyogo71

担当所員：上床

美也

72

No.

課題名

氏名

所属

Title

ISSP Activity Report 2017

Studies on High Pressure Properties of Organic Molecular
Conductors

61

有機分子性導体の高圧物性の研究

鳥塚

潔

武蔵野大学

教育学部

62

多形化合物 RIr2Si2(R= 希土類）の結晶育成と物
質評価 2

繁岡

透

山口大学

大学院創成科学 Crystal growth and characterization of polymorphic
compounds RIr2Si2(R=rare earth) 2
研究科

63

〃

内間

清晴

沖縄キリスト教
総合教育系
短期大学

繁岡

透

山口大学

内間

清晴

沖縄キリスト教
総合教育系
短期大学

内間

清晴

沖縄キリスト教
総合教育系
短期大学

繁岡

透

山口大学

大学院創成科学
研究科

64
65
66
67

多形化合物 GdIr2Si2 の磁気特性〃(Ho, La)Rh2Si2 の磁気特性 2〃〃

大学院創成科学 Magnetic characteristics of the polymorphic compound
DyIr2Si2
研究科〃
Magnetic characteristics of (Ho, La)Rh2Si2 2〃

NameOrganization

Kiyoshi Torizuka

Musashino University

Toru Shigeoka

Yamaguchi University

Kiyoharu Uchima

Okinawa Christian
Junior College

Toru Shigeoka

Yamaguchi University

Kiyoharu Uchima

Okinawa Christian
Junior College

Kiyoharu Uchima

Okinawa Christian
Junior College

Toru Shigeoka

Yamaguchi University68

三角格子反強磁性体の低温磁性

柄木

良友

琉球大学

教育学部

Low temperature magnetism of triangular antiferromagnets

Yoshitomo Karaki

University of the
Ryukyu69

高圧下における Eu 化合物の価数転移の探索

本多

史憲

東北大学

金属材料研究所

Investigation of valence transition on Eu compounds underhigh pressure

Fuminori Honda

Tohoku University

70

〃

仲村

愛

東北大学

金属材料研究所〃

Ai Nakamura

Tohoku University

71

〃

大貫

惇睦

琉球大学

理学部

〃

Yoshichika Onuki

University of the
Ryukyu希土類ラーベス化合物 RAl2 の異方的磁気体積効
大橋
果

政司

金沢大学

理工研究域

Masashi Ohashi

Kanazawa University

Masahiro Miyagawa

Kanazawa University

Masashi Ohashi

Kanazawa University

72

Anisotropic magnetovolume effect of rare earth Lavescompound RAl2

73

〃

宮川

昌大

金沢大学

大学院自然科学研究科

74

強相関電子系化合物における圧力および磁場誘起量子相転移の探索

大橋

政司

金沢大学

理工研究域

75

〃

大橋

康平

金沢大学

大学院自然科学研究科〃

Kouhei Oohashi

Kanazawa University

藤原

哲也

山口大学

大学院創成科学Transport property of HoRh2Si2
研究科

Tetsuya Fujiwara

Yamaguchi University

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

76
77

HoRh2Si2 単結晶の輸送特性〃〃
Pressure and field induced quantum phase transition instrongly correlated electron systems

〃

No.
78

課題名
PrZn2Ge2 三元系新規化合物の磁化特性 (2)

氏名

所属

Title

Name

Organization

藤原

哲也

山口大学

大学院創成科学
Magnetic property of PrZn2Ge2 novel ternary intermetallics II研究科

Tetsuya Fujiwara

Yamaguchi University

Takuto Hirayama

Yamaguchi University

79

〃

平山

拓斗

山口大学

大学院創成科学研究科

80

EuCuP2 の磁場中比熱測定

藤原

哲也

山口大学

大学院創成科学
Specific measurement under magnetic field of EuCuP2
研究科

Tetsuya Fujiwara

Yamaguchi University

81

〃

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

82

ホイスラー化合物強磁性体 Fe2NiAl の高圧化磁
化測定

伊藤

昌和

鹿児島大学

学術研究院理工
Magnetization of Heusler compound Fe2NiAl under pressure
学域理学系

Masakazu Ito

Kagoshima University

83

〃

恩田

圭二朗

鹿児島大学

理学部

Keijiro Onda

Kagoshima University84

導電性ラングミュア・ブロジェット膜の高圧下の電気的性質に関する研究

三浦康弘

桐蔭横浜大学

大学院工学研究 Studies on Electrical Properties of Conductive LangmuirBlodgett Films under High Pressure
科

Yasuhiro Miura

Toin University of
Yokohama

85

鉄カルコゲナイド化合物の圧力下電気抵抗測定

久田

旭彦

徳島大学

大学院理工学研 High-pressure electrical resistivity measurements of ironchalcogenide compound
究部

Akihiko Hisada

Tokushima University

86

鉄系超伝導体 FeSe1-xSx の高圧下電子相図の研究 芝内

孝禎

東京大学

大学院新領域創 Studies on the electronic phase diagram under high pressureof iron-based superconductor FeSe1-xSx
成科学研究科Takasada Shibauchi

The University of
Tokyo

〃

〃

〃

ISSP Activity Report 2017

87

〃

松浦

康平

東京大学

大学院新領域創成科学研究科〃Kouhei Matsuura

The University of
Tokyo

88

〃

新井

佑基

東京大学

大学院新領域創成科学研究科〃Yuki Arai

The University of
Tokyo

89

リン系充填スクッテルダイト超伝導体の磁気特
性

川村

幸裕

室蘭工業大学

大学院工学研究 Magnetic properties of filled skutterudite superconductor in
phosphorus system
科

Yukihiro Kawamura

Muroran Institute ofTechnology

90

CeIr(In1-xCdx)5 の圧力下電気抵抗測定

摂待

力生

新潟大学

理学部

Rikio Settai

Niigata University

角田

竜馬

新潟大学

大学院自然科学研究科

Ryoma Tsunoda

Niigata University

阿曽

尚文

琉球大学

理学部

Naofumi Aso

University of the
Ryukyu

佐藤

信

琉球大学

理学部

Shin Sato

University of the
Ryukyu

小林

理気

琉球大学

理学部

Riki Kobayashi

University of the
Ryukyu

91
92
93

73

94

〃
YbCo2Zn20 の Co 元素位置の置換効果 V〃
YbCo2Zn20 の Yb 元素の置換効果

Electrical resistivity measurement of CeIr(In1-xCdx)5 underpressure〃
Substitution effect at Co elements in YbCo2Zn20 V〃
Substitution effect at Yb element in YbCo2Zn20

74
ISSP Activity Report 2017

No.

課題名

95

〃

瑞慶覧

96

新奇スピン液体候補 Ba3ZnRu2O9 の圧力誘起相
転移の探索

寺崎

97

有機伝導体の物性に対する圧力媒体の影響

98
99
100

氏名

Title

Name

Organization

Chousei Zukeran

University of the
RyukyuIchiro Terasaki

Nagoya University

Keizo Murata

Osaka University of
Economics and Law

Miho Nakashima

Shinshu University

Yuki Nakamura

Shinshu University

琉球大学

理学部

一郎

名古屋大学

理学研究科

村田

惠三

大阪経済法科大 ２１世紀社会総 Effect of pressure medium on the properties of organic
学
合研究センター conductor

単結晶 R2T3Ge5(R: 希土類，T: 遷移金属元素 ) の
中島
高圧現象

美帆

信州大学

理学部

優希

信州大学

大学院総合理工
学研究科

出

鹿児島大学

大学院理工学研 Study on pressure-induced martensitic phase transformation in
Iduru Shigeta
Co-based Heusler alloys
究科

Kagoshima University

Ryutaro Ooka

Kagoshima University〃

中村

Co 基ホイスラー合金における圧力誘起マルテン
重田
サイト変態に関する研究

長星

所属

〃
Search for pressure-induced transition in a novel spin liquid
candidate Ba3ZnRu2O9

Pressure effect in R2T3Ge5 (R: rare earth metal, T: transition
metal element) single crystals
〃

〃

大岡

隆太郎

鹿児島大学

大学院理工学研究科

102 (Mn,Cr)AlGe の磁気特性

三井

好古

鹿児島大学

大学院理工学研
Magnetic properties of (Mn,Cr)AlGe
究科

Yoshifuru Mitsui

Kagoshima University

103

増満

勇人

鹿児島大学

理学部

Hayato Masumitsu

Kagoshima University

104 Mn 基および Fe 基 4 元磁性体の磁気特性

小山

佳一

鹿児島大学

大学院理工学研
Magnetic properties of Mn and Fe-based quaternary magnets
究科

Keiichi Koyama

Kagoshima University

105

アッドライン
ンゴジ ム
ウッド

鹿児島大学

大学院理工学研
究科

Adline Ngozi Nwodo Kagoshima University

106 圧力誘起価数転移の探索と高圧下輸送特性

辺土

正人

琉球大学

理学部

107

伊覇

航

琉球大学

理学部

義也

山形大学

Pressure effect of the martensitic transition temperature by the
大学院理工学研measurements of the electrical resistivity for the Co-Heusler
Yoshiya Adachi
究科
alloys.

Yamagata University

小木

雄貴

山形大学

工学部

Yuki Ogi

Yamagata University

110 回転希釈冷凍機を用いた量子液体・固体研究白濱圭也

慶應義塾大学

理工学部

Keiya Shirahama

Keio University

111

村川

智

東京大学

低温センター

Satoshi Murakawa

The University of
Tokyo

101

108
109

〃

〃

〃

Co 系ホイスラー合金の電気抵抗測定によるマル安達
テンサイト変態温度の高圧効果
〃

〃

〃

〃

〃

Searching of pressure-induced valence transition and transport
Masato Hedo
properties under high pressure〃〃
Study of quantum fluids and solids using rotating dilution
refrigerator〃

Wataru Iha

University of the
RyukyuUniversity of the
Ryukyu

No.

課題名

112

〃

高橋

大輔

足利工業大学工学部

113

反転対称性のない遷移金属間化合物とその関連物質の高圧下輸送特性

仲間

隆男

琉球大学

理学部

114

〃

垣花

将司

琉球大学

大学院理工学研究科

115 新奇 Ce 三元系化合物の圧力下測定

本山岳

島根大学大学院

116 近藤格子化合物 Ce3RuSn6 の圧力下磁化測定

脇舎

和平

117

〃

木村

118

新奇スピン液体候補 Ba3ZnRu2O9 の圧力誘起相
転移の探索

担当所員：吉澤

氏名

所属

Title

Name

Organization〃

Daisuke Takahashi

Ashikaga Institute ofTechnology

Transport properties of non-centrosymmetric transition metals
Nakama Takao
compounds under high pressure

University of the
RyukyuMasashi Kakihana

University of the
Ryukyu

総合理工学研究 Physical property measurements of new Ce heavy fermion
compound under pressure
科

Gaku Motoyama

Shimane University

横浜国立大学

大学院工学研究 Magnetization measurements of Ce3RuSn6 under appliedpressure
院

Kazuhei Wakiya

Yokohama National
University

美波

横浜国立大学

大学院工学府Minami Kimura

Yokohama National
University

山本

貴史

名古屋大学

大学院理学研究 Search for pressure-induced transition in a novel spin liquid
candidate Ba3ZnRu2O9
科〃〃

Takafumi Yamamoto Nagoya University

英樹

ISSP Activity Report 2017

119

YbCo2Zn20 の Co 位置置換系試料の極低温比熱
測定

阿曽

尚文

琉球大学

理学部

120

〃

盛島

実竜

琉球大学

理学部

121 (Yb1-xLux)Co2Zn20 置換系試料の極低温比熱測定 小林

理気

琉球大学

理学部

琉球大学

理学部

〃

〃
Specific heat measurement at very low temperature on(Yb1-xLux)Co2Zn20 systems

Naofumi Aso

University of the
RyukyuMiiru Morishima

University of the
RyukyuRiki Kobayashi

University of the
RyukyuMasatsugu
Moromizato

University of the
Ryukyu

122

〃

諸見里

123

ヨウ素輸送法により育成した鉄カルコゲン化合
物の物性

山崎

照夫

東京理科大学

理工学部

Physical properties of Fe-chalcogenide compounds grown by
iodine transport method

Teruo Yamazaki

Tokyo University of
Science

124

〃

矢口

宏

東京理科大学

理工学部〃

Hiroshi Yaguchi

Tokyo University of
Science

125

〃

山本

和典

東京理科大学

大学院理工学研
究科〃

Yamamoto Kazunori

Tokyo University of
ScienceCe(Ru1-xRhx)2Al10(x=0.23) 単結晶試料の高エネ
ルギー X 線ラウエ装置による結晶方位同定

小林

理気

琉球大学

理学部

担当所員：益田

75

126

真嗣

Specific heat measurements at very low temperature on
YbCo2Zn20 systems doped at Co elements

隆嗣
Alignment of Ce(Ru1-xRhx)2Al10(x=0.23) single crystals by highRiki Kobayashi
energy X-ray Laue diffaction

University of the
Ryukyu76

No.

ISSP Activity Report 2017

課題名

氏名

所属

127 Co4Ta2O9 の中性子磁気散乱実験に向けた軸立て 阿部

伸行

東京大学

非弾性中性子散乱を用いたスピンダイナミクス
の研究

羽合

孝文

高エネルギー加 物質構造科学研
Neutron inelastic scattering study of spin dynamics
速器研究機構
究所

中村

唯我

東京大学

大学院工学系研 Study on excitonic properties of organometallic lead halide
perovskite using magneto-optic mesure- ment
究科

S=1/2 ダイヤモンド型量子スピン鎖物質
130 K3Cu3AlO2(SO4)4 の 1/3 磁化プラトーの実験的 藤原
観測

理賀

東京理科大学

理学部

131 キラル反強磁性体における磁気キラル二色性

有馬

孝尚

東京大学

132

〃

徳永

祐介

133

〃

阿部

134

〃

135
136

Title

Name

Organization

大学院新領域創 Preparation of single crystalline Co4Ta2O9 for the measurement
Nobuyuki Abeof elastic neutron scattering
成科学研究科The University ofTokyo

Takafumi HawaiHigh Energy
Accelerator Research
Organization

Yuiga Nakamura

The University ofTokyo

Masayoshi Fujihara

Tokyo University of
Science

大学院新領域創
Magneto-chiral dichroism in a chiral antiferromagnet
成科学研究科Taka-hisa Arima

The University of
Tokyo

東京大学

大学院新領域創成科学研究科〃

Yusuke Tokunaga

The University of
Tokyo

伸行

東京大学

大学院新領域創成科学研究科〃Nobuyuki Abe

The University of
Tokyo

荒木

勇介

東京大学

大学院新領域創成科学研究科〃

Yusuke Araki

The University of
Tokyo

〃

中川

直己

東京大学

大学院新領域創成科学研究科〃

Naoki Nakagawa

The University of
Tokyo

〃

近江

毅志

東京大学

大学院新領域創成科学研究科〃Tsuyoshi Omi

The University of
Tokyo

137

スピンクラスター物質の高温での強磁場磁化測
定

長谷

正司

物質・材料研究 中性子散乱グル High-field magnetization measurements on spin-clustercompounds at high temperatures機構
ープ

Masashi Hase

National Institute forMaterials Science138

幾何学的フラストレート磁性体の強磁場磁化測
定

菊池

彦光

福井大学

学術研究院工学
Magnetization measurements of the frustrated magnets
系部門

Hikomitsu Kikuchi

University of Fukui

139

〃

三浦

俊亮

福井大学

大学院工学研究
科〃

Shunsuke Miura

University of Fukui

静岡大学

理学部

Physical properties in rare earth intermetallic compounds athigh magnetic fields

Takao Ebihara

Shizuoka University

静岡大学

理学部

〃

Murakushi Takuma

Shizuoka University

128

担当所員：嶽山
129

正二郎

磁気光学測定を用いたハロゲン化金属ペロブス
カイト型結晶の励起子特性の研究

担当所員：金道

Experimental observation of the 1/3 magnetization plateau in
the S=1/2 diamond chain compound K3Cu3AlO2(SO4)4

浩一

140 希土類金属間化合物の強磁場物性研究

海老原

141

村串

〃

孝雄
拓真

No.

課題名

氏名

所属

142

重い電子系化合物が示す非従来型超伝導と磁性
の相関

横山

淳

茨城大学

理学部

143

〃

大島

佳樹

茨城大学

理学部

144

ホイスラー化合物強磁性体 Fe2NiAl の高磁場物
性

伊藤

昌和

鹿児島大学

145

〃

恩田

圭二朗

146 ホイスラー化合物の強磁場磁化

廣井

147 金属ナノ結晶の磁化特性
148

Title
Interplay between unconventional superconductivity andmagnetism in heavy-fermion compounds

Name

Organization

ISSP Activity Report 2017

77

Makoto Yokoyama

Ibaraki University

Yoshiki Oshima

Ibaraki University

大学院理工学研High field magnetic properties of Heusler compound Fe2NiAl
究科

Masakazu Ito

Kagoshima University

鹿児島大学

理学部

Keijiro Onda

Kagoshima University

政彦

鹿児島大学

大学院理工学研 Magnetizaiton of some Heusler compounds in high magnetic
fields究科

Masahiko Hiroi

Kagoshima University

稲田

貢

関西大学

システム理工学
Magnetic properties of metal nanocrystals部

Mitsuru Inada

Kansai University

〃

越田

樹

関西大学

システム理工学部

Koshida Tatsuki

Kansai University

149

金属ナノクラスターネットワークの磁気抵抗測
定

稲田

貢

関西大学

システム理工学 Electronic transport properties of metal cluster networks underMitsuru Inada
high-magnetic field部

Kansai University

150

〃

小笠原

関西大学

システム理工学部

Ogasahara Naoki

Kansai University

151

有機／無機スピン源を持つ低次元スピン系の磁場中量子相転移小野俊雄

大阪府立大学

Field induced quantum phase transitions on the low大学院理学系研
dimensional spin systems which have organic/inorganic spin
究科
sources

Toshio Ono

Osaka Prefecture
University

152

〃

梶本

侑馬

大阪府立大学

大学院理学系研
究科

Yuma Kajimoto

Osaka Prefecture
University

153

新規イッテルビウム化合物および強磁性臨界点近傍の物質の強磁場磁化測定

道岡

千城

京都大学

大学院理学研究 High-field Magnetization of novel Yb based compounds andweak ferromagnetic compounds
科

Chishiro Michioka

Kyoto University

154

〃

山田

真二

京都大学

大学院理学研究科

Shinji Yamada

Kyoto University

155

過剰オーバードープ Bi-2212 のパルス強磁場中
面間輸送特性を用いた擬ギャップ状態の研究

渡辺

孝夫

弘前大学

A study of the pseudo gap state using interlayer
大学院理工学研
magnetotransport measurements under pulsed magnetic fields Takao Watanabe
究科
for heavily overdoped Bi-2212

Hirosaki University

156

〃

佐々木

弘前大学

大学院理工学研
究科

Nae Sasaki

Hirosaki University

157

近藤半導体 (Yb, R)B12 (R=Zr, Sc, Y) の 80T 級
磁場下での強磁場物性

伊賀

文俊

茨城大学

理学部

Fumitoshi Iga

Ibaraki University

158

〃

横道

啓省

茨城大学

大学院理工学研
究科

Keisei Yokomichi

Ibaraki University

尚貴

菜絵

〃

〃

〃

〃

〃

〃

〃
High field physical property of Kondo insulator (Yb, R)B12(R=Zr, Sc, Y) up to 80T class by using the pulse magnet〃

78
ISSP Activity Report 2017

No.

課題名

159

topological insulator SmB6,YbB12 の磁化特性
と比熱

伊賀

文俊

茨城大学

理学部

160

〃

平野

航

茨城大学

大学院理工学研
究科

文俊

茨城大学

理学部

静岡大学

理学部

161

氏名

高圧合成希土類 6 及び 12 ホウ化物の磁化特性と伊賀
比熱

担当所員：徳永

所属

Title

Name

Organization

Magnetic and thermal properties of topological insulator SmB6
Fumitoshi Iga
and YbB12

Ibaraki University〃

Wataru Hirano

Ibaraki University

Magnetic and thermal properties of rare earth hexa-borides
and dodeca-borides produced by high pressure synthesis

Fumitoshi Iga

Ibaraki University

Physical Property of rare earth compounds at pulse magnet

Ebihara Takao

Shizuoka University

Jumaeda Jatmika

Shizuoka University
Tokyo Universityof Agriculture andTechnology

将史

162 サブメガガウス領域での希土類物性研究

海老原

163

〃

ジュマエダ
ジャトミカ

静岡大学

大学院創造科学技術研究科

164

Nd2Co12P7 を中心とする遍歴磁性体の磁場中相
転移の観測

太田

寛人

東京農工大学

大学院工学研究 Observation of field-induced phase transition of itinerantmagnets including Nd2Co12P7
院

Hiroto Ohta

165

〃

加藤

優典

東京農工大学

大学院工学府Yusuke Kato

166 (AlxM2-x)GeO5 (M=Cr, V, Fe) の強磁場磁化測定 香取

浩子

東京農工大学

大学院工学研究 High-field magnetization measurements of (AlxM2-x)GeO5(M=Cr, V, Fe)院

Hiroko Katori

167

高田

早紀

東京農工大学

大学院工学府〃Saki Takada

Tokyo Universityof Agriculture andTechnology

168 CeTmIn2m+3（T : 遷移金属）の強磁場磁化測定

広瀬

雄介

新潟大学

理学部

High-field magnetization of CeTmIn2m+3 (T : Transition metal)

Yusuke Hirose

Niigata University

169

角田

竜馬

新潟大学

大学院自然科学研究科〃

Ryoma Tsunoda

Niigata University

170 極性キラルらせん磁性体における電気磁気効果

徳永

祐介

東京大学

大学院新領域創
Magnetoelectric properties of the polar-chiral helimagnet
成科学研究科

Yusuke Tokunaga

The University of
Tokyo

171

〃

阿部

伸行

東京大学

大学院新領域創成科学研究科〃Nobuyuki Abe

The University of
Tokyo

172

〃

荒木

勇介

東京大学

大学院新領域創成科学研究科〃

Yusuke Araki

The University of
Tokyo

173

〃

前島

夏奈

東京大学

大学院新領域創成科学研究科〃

Kana Maeshima

The University of
Tokyo

174

〃

小池

仁希

東京大学

大学院新領域創成科学研究科〃Yoshiki Koike

The University of
Tokyo

〃

〃

孝雄

〃

〃

Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology

No.

課題名

氏名

所属

175

キャリアドープした多層ディラック電子系磁性体における強磁場輸送現象の解明

酒井

英明

大阪大学

176

〃

鶴田

圭吾

177

パルスマグネットを用いた半金属における磁場
誘起電子相転移の研究

矢口

宏

178

非破壊パルス磁場を用いた半金属における磁場
誘起電子相転移の研究

仁野平

179

フラストレートした磁気構造を持つ Ce2MgSi2 の本多
強磁場磁化測定

Name

Organization

大学院理学研究 Revealing high-field magnetotransport properties for carrierdoped Dirac antiferromagnets
科

Hideaki Sakai

Osaka University

大阪大学

大学院理学研究科

Keigo Tsuruda

Osaka University

東京理科大学

理工学部

Hiroshi Yaguchi

Tokyo University of
Science

東京理科大学

大学院理工学研 Study of Magnetic-Field-Induced Electronic Phase Transitionsin Semimetals Using Non-Destructive Pulsed Magnetic Fields
究科

Ryo Ninohira

Tokyo University of
Science

史憲

東北大学

金属材料研究所

Honda Fuminori

Tohoku University

広瀬

雄介

新潟大学

理学部

Yusuke Hirose

Niigata University

平郡

諭

東北大学

原子分子材料科 Transport poperties of correlated molecular solids under high学高等研究機構 magnetic field

Satoshi Heguri

Tohoku University

木原

工

東北大学

金属材料研究所

Takumi Kihara

Tohoku University

2 次元有機超伝導体における磁場誘起超伝導状態
183 の探索、及び超強磁場下磁化測定による局在ス 井原
ピン ‐ 遍歴電子スピン間相互作用の研究

慶彦

北海道大学

Study for field induced superconducting state in organic
大学院理学研究superconductor, and localized-itinerant spins interaction by院
magnetization measurement under pulsed high fieldYoshihiko Ihara

Hokkaido University

184

キラル合金 Mn(Si,Ge) における強磁場まで安定なトポロジカルスピン構造の解明

金澤

直也

東京大学

大学院工学系研 Investigation on robust topological spin textures under highmagnetic fields in the chiral alloy Mn(Si,Ge)
究科

Naoya Kanazawa

The University of
Tokyo

185

〃

藤代

有絵子

東京大学

大学院工学系研
究科

Yukako Fujishiro

The University of
Tokyo

186

正四角台塔型反強磁性体の強磁場中電気磁気特
性の測定

木村

健太

大阪大学

大学院基礎工学 High-field magnetoelectric properties of square-cupola-based
antiferromagnets
研究科

Kenta Kimura

Osaka University

187

ディラック半金属 Cd3As2 薄膜におけるカイラル
打田
磁気効果の解明正輝

東京大学

大学院工学系研 Investigation of chiral magnetic effects in Dirac semimetal
Cd3As2 films
究科

Masaki Uchida

The University of
Tokyo

188

Fe2+-Ti4+, 及び Al3+ 置換した BaFe12O19 の強磁
神島
場磁気特性

謙二

埼玉大学

大学院理工学研 Magnetic properties of Fe2+-Ti4+ and Al3+ substituted
BaFe12O19 under high magnetic field
究科

Kenji Kamishima

Saitama University

189

層状化合物 EuFBiS2 における異常な負の巨大磁
気抵抗の起源探索

東中隆二

首都大学東京大学院理工学研 Investigation of anomalous negative large magnetoresistanceof EuFBiS2
究科

Ryuji Higashinaka

Tokyo Metropolitan
University

190

〃

梶谷

丈

首都大学東京大学院理工学研
究科

Joe Kajitani

Tokyo Metropolitan
University

180〃

181 強相関分子性固体における磁場中輸送特性
182

ホイスラー合金 NiCoMnIn の強磁場誘起マルテ
ンサイト逆変態に伴う高速イメージング測定

ISSP Activity Report 201779

担当所員：松田

康弘

諒

Title

〃
Study of Field-Induced Electronic Phase Transitions in
Semimetals Using Pulsed Magnets

High field magnetization experiment on Ce2MgSi2 with the
Shastry-Sutherland magnetic lattice〃High-speed imaging in magnetic-field-induced martensitic
transformation for Heusler alloys NiCoMnGa

〃

〃

80

No.

ISSP Activity Report 2017

課題名

氏名

近藤半導体 (Yb,R)B12、価数揺動物質 (Y,Tm)B6、
191 およびペロブスカイト酸化物のワンターンコイ 伊賀
ル 120T パルス磁場下での強磁場磁化過程

文俊

茨城大学

理学部

192

松浦

航

茨城大学

理学部

トポロジカル近藤絶縁体候補物質である希土類
193 硼化物単結晶の表面電子状態とスピン・軌道偏
極構造

大坪

嘉之

大阪大学

大学院生命機能 Surface electronic states and its spin/orbital polarization of
Yoshiyuki Ohtsubo
rare-earth borides as candidates of topological Kondo insulator
研究科

Osaka University

194

〃

WANG
CHENGWEI

大阪大学

大学院理学研究
科

Wang Chengwei

Osaka University

195

スピン分解角度分解光電子分光による GdTe2 のCDW ギャップ内表面状態の研究

伊藤

名古屋大学

シンクロトロン Spin-resolved angle-resolved photoemission study of surface
光研究センター states among CDW gap of GdTe2

Takahiro Ito

Nagoya University

196

〃

楠

名古屋大学

大学院工学研究
科〃

Kusunoki Naohiro

Nagoya University

197

〃

近谷

名古屋大学

工学部

〃

Kontani Shota

Nagoya University

198

遷移金属ダイカルコゲナイドの時間分解角度分
解光電子分光下志万理化学研究所

創発物性科学研 Time-resolved angle-resolved photoemission study ontransition metal dichalchogenides究センター

Takahiro Shimojima

RIKEN

199

〃

三石

夏樹

東京大学

大学院工学系研
究科

Natsuki Mitsuishi

The University of
Tokyo

200

磁性元素をインターカレートした遷移金属ダイ
カルコゲナイドにおけるスピン分極の観測

石坂

香子

東京大学

大学院工学系研 Investigation of spin polarization in intercalated transitionmetal dichalcogenide
究科

201

〃

吉田

訓

東京大学

大学院工学系研
究科〃

担当所員：辛

所属

Title

Name

Organization

High field magnetization of Kondo insulator (Yb,R)B12, valencefluctuation material (Y,Tm)B6 and perovskite oxides by using
Fumitoshi Iga
one-turn coil in a 120 T pulse magnet

Ibaraki University〃

Wataru Matsuura

Ibaraki University

埴

孝寛
直紘
翔汰
貴博

〃

〃

〃

The University ofTokyo
Satoshi Yoshida

The University ofTokyo

Kazuki Sumida

Hiroshima University

202

有機分子性結晶α -(BEDT-TTF)2I3 の非占有電子
角田状態および非平衡キャリアダイナミクスの観測

一樹

広島大学

Observation of unoccupied electronic structure and non大学院理学研究equilibrium carrier dynamics in organic molecular crystal
科
alpha-(BEDT-TTF)2I3

203

理想的なワイル半金属の非平衡ダイナミクスの
解明 II

木村

昭夫

広島大学

大学院理学研究
Nonequilibrium electron dynamics of ideal Weyl semimetals II Akio Kimura
科

Hiroshima University

204

〃

檜垣

聡太

広島大学

大学院理学研究
科

Sota Higaki

Hiroshima University

205

超巨大磁気抵抗を示すトポロジカル物質の非平衡キャリアダイナミクス

木村

昭夫

広島大学

大学院理学研究 Nonequilibrium carrier dynamics of topological extreme
magneto-resistance materials
科

Akio Kimura

Hiroshima University

206

〃

吉川

智己

広島大学

大学院理学研究
科

Tomoki Yoshikawa

Hiroshima University

〃

〃

No.

課題名

バルク敏感高分解能スピン分解光電子分光を用207 いたハーフメタル強磁性体における有限温度効果の研究
トポロジカル近藤絶縁体候補物質である希土類
208 硼化物単結晶の表面電子状態とスピン・軌道偏極構造
209

インジウム原子層超伝導体におけるラシュバス
ピン分裂の直接観察

担当所員：秋山
210

氏名

所属

Organization

Hirokazu Fujiwara

Okayama University

弘和

岡山大学

Studies on finite temperature effects of half-metallic
大学院自然科学ferromagnets by bulk-sensitive high-resolution spin-resolved
研究科
photoemission spectroscopy

中村

拓人

大阪大学

大学院理学研究 Surface electronic states and its spin/orbital polarization of
Takuto Nakamura
rare-earth borides as candidates of topological Kondo insulator
科

内橋

隆

国際ナノアーキ
Direct observation of Rashba effect-induced spin splitting in an
物質・材料研究
Takashi Uchihashi
テクトニクス研
indium atomic-layer superconductor
機構
究拠点

裕之

埼玉大学

大学院理工学研
Efficiency of upconversion luminescence from GaPN alloys
究科

Hiroyuki Yaguchi

Saitama University

埼玉大学

大学院理工学研
究科〃

Daisuke Igarashi

Saitama University〃

Kengo Takamiya

Saitama University

Kazuyuki Sakaue

Waseda University

Osaka University
National Institute forMaterials Science

英文

211

〃

五十嵐

212

〃

高宮

健吾

埼玉大学

総合技術支援セ
ンター

大輔

坂上

和之

早稲田大学

高等研究所

洋平

213 次世代レーザー及び加工の技術開発担当所員：板谷Name

藤原GaPN 混晶のアップコンバージョン発光効率に関矢口する研究担当所員：小林

Title

Development of a next generation laser system and laser
machining technology

治郎

ISSP Activity Report 2017214

テラヘルツ分光装置を用いた酸化物磁性材料の
研究

大越

慎一

東京大学

大学院理学系研Study of magnetic oxide using terahertz spectroscopy
究科Shin-ichi Ohkoshi

The University of
Tokyo

215

〃

生井

飛鳥

東京大学

大学院理学系研
究科〃

Asuka Namai

The University of
Tokyo

216

〃

吉清

まりえ

東京大学

大学院理学系研
究科〃

Marie Yoshikiyo

The University of
Tokyo

217

希土類単酸化物薄膜における時間分解コヒーレ
ントフォノン分光

牧野

哲征

福井大学

学術研究院工学 Time-resolved coherent phonon spectroscopy in rare-earthmonooxide thin films
系部門

Takayuki Makino

University of Fukui

218

〃

和座

一憲

福井大学

大学院工学研究
科

Kazunori Waza

University of Fukui〃

大阪大学 先端強磁場科学研究センター / Center for Advanced High Magnetic Field Science Osaka University

81

219

パルス磁場を用いたマルテンサイト変態のカイ
ネティクスに関する研究

福田

隆

大阪大学

大学院工学研究 A study on kinetics of martensitic transformations using pulsed
Takashi Fukuda
magnetic field科

Osaka University

82

No.

課題名

220 強磁場環境下におけるタンパク質結晶成長

氏名
牧

祥

所属

Title

Name

Organization

ISSP Activity Report 2017大阪大谷大学

薬学部

Crystal Growth of Protein under the Magnetic Field Condition

Syou Maki

Faculty of Pharmacy,
Osaka Ohtani
University

Physical properties of strongly correlated electron systems
under pulsed high magnetic field.

Tetsuya Takeuchi

Osaka University

Yoshichika Onuki

University of the
Ryukyus221

パルス強磁場を用いた強相関電子系物質の強磁場物性の研究

竹内

徹也

大阪大学

低温センター

222

〃

大貫

惇睦

琉球大学

理学部

223

希釈三次元ハイゼンベルグ反強磁性体の強磁場
物性

浅野

貴行

福井大学

学術研究院工学 Magnetic properties of diluted 3D Heisenberg antiferromagnet
Takayuki Asanoin high magnetic fields
系部門

University of Fukui

224

〃

大貫

惇睦

琉球大学

理学部

Taiki Yokoyama

University of Fukui

225

ディラック・ワイル半金属が示す量子輸送特性と巨大磁気抵抗効果の研究

村川

寛

大阪大学

大学院理学研究 High magnetic field study of transport properties in Dirac andWeyl semimetals
科

Hiroshi Murakawa

Osaka university

226 新規低次元磁性体の合成とその量子磁性の解明

本多

善太郎

埼玉大学

大学院理工学研 Synthesis, structure, and magnetism of novel low-dimensionaltransition metal coordination polymers
究科

Zentaro Honda

Saitama University

227 パルス強磁場用極低温実験装置の開発

野口悟

大阪府立大学２１世紀科学研
Development of the cryostat for pulsed high magnetic field
究機構

Satoru Noguchi

Osaka Prefecture
University

228

大貫

惇睦

琉球大学

理学部

Shoma Ishiuchi

Osaka Prefecture
University229

鉄系超伝導体 Sr4V2O6Fe2As2 における超伝導異
中島
方性

正道

大阪大学

大学院理学研究 Anisotropy of superconductivity in iron-based superconductor
Masamichi Nakajima Osaka University
Sr4V2O6Fe2As2
科230

磁場中輸送現象による鉄系超伝導体における擬ギャップの検証

中島

正道

大阪大学

Investigation of pseudogap behavior in iron-based
大学院理学研究superconductors by transport measurements under magnetic
科
fieldsMasamichi Nakajima Osaka University

231

フタロシアニン分子系の均一混晶における巨大
磁気抵抗の局在スピン効果

花咲

徳亮

大阪大学

大学院理学研究 Local moment effect on giant magnetoresistance inphthalocyanine mixed crystal
科

Noriaki Hanasaki

Osaka University

232

〃

大貫

惇睦

琉球大学

理学部

Ryuta Ishii

Osaka university

宍戸寛明

大阪府立大学

大学院工学研究 Magnetization and transport measurements for SmB6 thin films
Hiroaki Shishido
under high magnetic field科

Osaka Prefecture
University〃

233 SmB6 薄膜の強磁場中での磁化輸送係数測定

〃

〃

〃

〃

234

擬テトラヘドラル４配位構造を持つ２価コバル
ト単核単分子磁石のゼロ磁場分裂定数の決定

福田

貴光

大阪大学

Determination of zero-field splitting parameters of a novel
大学院理学研究
mononuclear divalent cobalt single molecule magnet having
科
the pseudo-tetrahedral coordination geometry

Takamitsu Fukuda

Osaka University

235

〃

大貫

惇睦

琉球大学

理学部

Toshiharu Ishizaki

Osaka University236

多重極限環境下の電子スピン共鳴計測に用いる
高出力ミリ波・サブミリ波伝送系の開発研究

光藤

誠太郎

福井大学

Development of high-power millimeter and submillimeter wave
遠赤外領域開発
transmission system for electron spin resonance measurement Seitaro Mitsudo
研究センターunder multiple extreme environment〃

University of Fukui

No.

課題名

237

〃

238

氏名

所属

大貫

惇睦

琉球大学

理学部

高出力テラヘルツ光源 ( ジャイロトロン ) を光源出原とする 高周波 ESR 分光 の研究

敏孝

福井大学

Title
〃

Name

Organization

Yutaka Fujii

University of Fukui

遠赤外領域開発 Study on high frequency ESR spectroscopy using high powerTHz radiation sourses - Gyrotrons
研究センター

Toshitaka Idehara

University of Fukui

Isamu Ogawa

University of Fukui

239

〃

小川

勇

福井大学

遠赤外領域開発
研究センター240

ジャイロトロンを用いた高圧下強磁場 ESR 装置の開発と応用

櫻井

敬博

神戸大学

研究基盤センタ Development and application of high pressure and high field
ESR system using gyrotronー

Takahiro Sakurai

Kobe University

241

Sr2MnSi2O7 単結晶試料の強磁場下での磁化・電桑原
気分極・ESR 測定

英樹

上智大学

理工学部

Magnetization, electric polarization, and ESR measurements
for Sr2MnSi2O7 single crystals in pulsed high magnetic fields

Hideki Kuwahara

Sophia University

大貫

惇睦

琉球大学

理学部

〃

Masaaki Noda

Sophia University

戸川欣彦

大阪府立大学

Magnetic property of monoaxial chiral magnetic materials
大学院工学研究examined by means of magnetic torque and resonance科
measurements

Yoshihiko Togawa

Osaka Prefecture
University

大貫

惇睦

琉球大学

理学部

Francisco Goncalve

Osaka Prefecture
University

245 フラストレート系新物質の強磁場磁化測定

山口博則

大阪府立大学

大学院理学系研 High-field magnetization measurement on new frustrated
materials
究科

Hironori Yamaguchi

Osaka Prefecture
University

246 正四角台塔型反強磁性体の強磁場中 ESR 測定

木村

健太

大阪大学

大学院基礎工学 High-field ESR measurements of square-cupola-based
antiferromagnets
研究科

Kenta Kimura

Osaka University

247 GaFeO3 におけるスピン波の非相反性

有馬

孝尚

東京大学

大学院新領域創Nonreciprocal spin waves in GaFeO3
成科学研究科Takahisa Arima

The University of
Tokyo

248

大貫

惇睦

琉球大学

理学部

〃

Tsuyoshi Omi

The University of
Tokyo

Title

Name

Organization

242
243
244

〃
単軸性キラル磁性体の磁気特性測定
クと磁気共鳴測定−

−磁気トル

〃

ISSP Activity Report 2017

〃

〃

〃

物質合成・評価設備 P クラス / Materials Synthesis and Characterization P Class Researcher
No.

課題名

氏名

所属

83

1

p 型窒化ガリウム薄膜の作製と評価

山田

太郎

東京大学

大学院工学系研 Fabrication and physical investigation of p-type gallium nitride
Taro Yamada
thin films
究科

The University of
Tokyo

2

電子が複合自由度を持つ遷移金属カルコゲナイ
ドの合成と物性評価

片山

尚幸

名古屋大学

大学院工学研究 Growth of the transition metal chalcogenides with charge,
orbital and spin degrees of freedom科

Naoyuki Katayama

Nagoya University

3

〃

田村

慎也

名古屋大学

大学院工学研究
科

Shinya Tamura

Nagoya University

〃

No.

課題名

氏名

所属

84

Title

Name

Organization

Title

Name

Organization

物質合成・評価設備 G クラス / Materials Synthesis and Characterization G Class Researcher
No.

ISSP Activity Report 2017

1課題名
非従来型超伝導体におけるエックス線回折

氏名

所属

芝内

孝禎

東京大学

大学院新領域創
X-ray diffraction on unconventional superconductors
成科学研究科Takasada Shibauchi

The University of
Tokyo

2

〃

水上

雄太

東京大学

大学院新領域創成科学研究科〃Yuta Mizukami

The University of
Tokyo

3

〃

細井

優

東京大学

大学院新領域創成科学研究科〃

Hosoi Suguru

The University of
Tokyo

4

〃

竹中

崇了

東京大学

大学院新領域創成科学研究科〃

Takaaki Takenaka

The University of
Tokyo

5

〃

石田

浩祐

東京大学

大学院新領域創成科学研究科〃

Kousuke Ishida

The University of
Tokyo

徳永

朋祥

東京大学

大学院新領域創 Research of incomplete semipermeable properties of
mudstones
成科学研究科

Tomochika
Tokunaga

The University ofTokyo

Shogo Hirota

The University of
Tokyo

6

泥岩が示す不完全な半透膜性に関する研究

7

〃

廣田

翔伍

東京大学

大学院新領域創成科学研究科8

高温高圧水中の固体酸・塩基触媒反応の速度論
的解析

大島

義人

東京大学

大学院新領域創 Kinetic analysis of solid acid and base catalyzed reactions in
sub- and supercritical water
成科学研究科Yoshito Oshima

The University of
Tokyo

9

〃

秋月

信

東京大学

大学院新領域創成科学研究科

Makoto Akizuki

The University of
Tokyo

大島

義人

東京大学

大学院新領域創Organic synthesis in sub- and supercritical water
成科学研究科Yoshito Oshima

The University ofTokyo

Koki Ito

The University of
Tokyo

10

高圧高温水を反応場とした有機合成反応

〃

〃

11

〃

伊藤

光基

東京大学

大学院新領域創成科学研究科12

ケミカルループ法における高活性かつ長期安定性を有する酸素キャリア材料の開発

大友

順一郎

東京大学

大学院新領域創 Development of oxygen carrier materials with high activity
and durability for chemical looping systems.
成科学研究科

Junichiro Otomo

The University of
Tokyo

13

〃

岡

東京大学

大学院新領域創成科学研究科Oka Hikaru

The University of
Tokyo

14

ケミカルループ法におけるチタン酸カルシウム
担体による酸化還元反応促進効果

大友

順一郎

東京大学

Accelerating of reaction kinetics of oxidation and reduction
大学院新領域創using CaTi1-xFexO3-δ as oxygen carrier materials for chemical
成科学研究科
looping systems

Junichiro Otomo

The University of
Tokyo

15

〃

有賀

耀介

東京大学

工学部

Yosuke Ariga

The University of
Tokyo

16

アンモニア電解合成反応における新規電極触媒
開発と電極反応評価

大友

順一郎

東京大学

大学院新領域創 Development of new electro-catalysts and evaluation ofelectrode reaction for electrochemical synthesis of ammonia
成科学研究科

Junichiro Otomo

The University of
Tokyo

輝

〃

〃

〃

No.

課題名

17

〃

及川

暁雄

東京大学

大学院新領域創成科学研究科18

プロトン伝導性固体電解質を用いた電解合成反応における電極触媒開発と反応速度論解析

大友

順一郎

東京大学

19

〃

高坂

文彦

大友

20

新規プロトン - 電子混合伝導体の開発

氏名

所属

Title

Name

Organization〃

Akio Oikawa

The University ofTokyo

大学院新領域創 Development of electrode catalysts and kinetic analysis forelectrolysis using proton conducting fuel cells
成科学研究科

Junichiro Otomo

The University of
Tokyo

東京大学

大学院新領域創成科学研究科

Fumihiko Kosaka

The University of
Tokyo

順一郎

東京大学

大学院新領域創
Development of proton-electron mixed conductors
成科学研究科

Junichiro Otomo

The University ofTokyo

Kojo GenThe University of
Tokyo

〃

ISSP Activity Report 2017

21

〃

小城

元

東京大学

大学院新領域創成科学研究科22

中温作動プロトン伝導型 SOFC のセル劣化要因
の検討

大友

順一郎

東京大学

大学院新領域創 Analysis of degradations in intermediate temperature protonconducting SOFC cells
成科学研究科

Junichiro Otomo

The University of
Tokyo

23

〃

橋本

隼輔

東京大学

大学院新領域創成科学研究科Shunsuke Hashimoto

The University of
Tokyo

24

ぺロブスカイト型酸化物を用いたケミカルルー
ピングシステムの開発

大友

順一郎

東京大学

大学院新領域創 Preparation of perovskite oxides as supports for oxygen carrier
Junichiro Otomo
materials for chemical looping systems
成科学研究科The University of
Tokyo

25

〃

オーチェン
ジェームズ
オーチェン

東京大学

大学院新領域創成科学研究科

Ochieng James
Ochieng

The University of
Tokyo

26

二酸化炭素と窒素による尿素の電気化学的合成

大友

東京大学

大学院新領域創 Electrochemical Synthesis of Urea from Carbon Dioxide andNitrogen
成科学研究科

Junichiro Otomo

The University of
Tokyo

27

〃

李

東京大学

大学院新領域創成科学研究科Chen-I Li

The University of
Tokyo

28

ケミカルループ法における高性能酸素キャリア
粒子の開発

大友

東京大学

大学院新領域創 Development of oxygen carrier materials with high activity
and durability for chemical looping systems
成科学研究科

Junichiro Otomo

The University of
Tokyo

29

〃

東京大学

大学院新領域創成科学研究科Martin Keller

The University of
Tokyo

順一郎
建毅
順一郎

マーチン
ラー

ケ

〃

〃

〃

〃

〃

85

30

トポロジカル半金属候補物質の合成と物性

岡本

佳比古

名古屋大学

大学院工学研究 Synthesis and Physical Properties of Candidate TopologicalSemimetals
科

Yoshihiko Okamoto

Nagoya University

31

超臨界水中におけるゼオライトの安定性に関す
る研究

大島

義人

東京大学

大学院新領域創The stability of zeolites in supercritical water condition
成科学研究科Yoshito Oshima

The University of
Tokyo

32

〃

アピバンボリラク チャンウィット

東京大学

大学院新領域創成科学研究科Apibanboriak
Chanwit

The University of
Tokyo

33

超臨界水を利用した微粒子合成における in situ
有機修飾技術の開発

大島

東京大学

大学院新領域創 The development of the in situ organic surface modification on
Yoshito Oshima
nanoparticles synthesis in supercritical water.
成科学研究科義人〃

The University of
Tokyo

86

No.

課題名

34

〃

ISSP Activity Report 2017

35

氏名
原田

所属
東京大学

大学院新領域創成科学研究科

岳彦

東京大学

拓真

メソポーラスマテリアル・グラフェンオキサイド佐々木に担持した金属触媒のキャラクタリゼーション

Title

Name

Organization

Takuma Harada

The University ofTokyo

大学院新領域創 Characterization of metal catalysts supported on mesoporous
materials and graphene oxides
成科学研究科

Takehiko Sasaki

The University of
Tokyo

〃

36

〃

Etty
NurliaKusumawati

東京大学

大学院理学系研
究科〃

Etty Nurlia
Kusumawati

The University of
Tokyo

37

〃

有村

東京大学

大学院新領域創成科学研究科〃Yuki Arimura

The University of
Tokyo

東京大学

大学院新領域創insitu measurements of Raman scattering for catalytic reactions Takehiko Sasaki
成科学研究科祐紀
岳彦

The University of
Tokyo

38

触媒反応の insitu ラマン散乱測定

佐々木

39

層状コバルト酸水素化物における圧力効果

山本

隆文

京都大学

大学院工学研究
Pressure Effect on Layered cobalt Oxyhydrides
科

Takafumi Yamamoto Kyoto University40

層状希土類化合物 RZn3P3(R= 希土類 ) の高圧合
成

関根

ちひろ

室蘭工業大学

大学院工学研究 High-pressure synthesis of layered rare-earth compounds
RZn3P3 (R=rare earth)科

Chihiro Sekine

Muroran Institute ofTechnology

41

〃

森

室蘭工業大学

大学院工学研究
科

Hidemasa Mori

Muroran Institute ofTechnology

42

全個体電池のための Li イオン伝導体の高圧合成

廣瀬

瑛一

名古屋大学

大学院工学研究 High pressure synthesis of Li ion conductor for all solid statebattery
科

Eiichi Hirose

Nagoya University

43

高温高圧下で軽元素が鉄ーシリケイトー水系に及ぼす影響の解明

飯塚

理子

東京大学

大学院理学系研 Behavior of light elements in iron-silicate-water system underhigh pressure and high temperature
究科

Riko Iizuka

The University of
Tokyo

44

〃

古村

俊行

東京大学

大学院理学系研
究科

Tsuyoshi Kimura

The University of
Tokyo

英将

〃

〃

45

高圧下でのアミノ酸のペプチド化反応の観察

藤本

千賀子

東京大学

大学院理学系研
Peptide formation of amino acids under high pressure
究科

Fujimoto Chikako

The University of
Tokyo

46

超硬質遷移金属多窒化物の高圧合成とラマン散
乱測定

丹羽

健

名古屋大学

大学院工学研究 Ultra-high pressure synthesis of super hard transition metal
nitrides and Raman scattering spectroscopy科

Ken Niwa

Nagoya University

47

〃

高山

新

名古屋大学

大学院工学研究科

Shin Takayama

Nagoya Universty

超高圧合成法による新規 III 族半導体窒化物の創
丹羽
製と結晶化学健

名古屋大学

大学院工学研究 High pressure synthesis and crystal chemistry of novel
semiconducting nitrides
科

Ken Niwa

Nagoya University

Tomoya Inagaki

Nagoya University

Shu Yamaguchi

The University of
Tokyo

48

〃

49

〃

稲垣

智哉

名古屋大学

工学部

50

超高圧プレスを用いた新規プロトニクス酸化物のソフト化学的合成法の検討

山口

周

東京大学

大学院工学系研 Oxide-Protonics materials synthesis by combined use of soft
chemical method and high pressure
究科

〃

No.

課題名

51

〃

52

溶融亜鉛メッキ合金相の応力誘起変態

氏名

所属

田中

和彦

東京大学

大学院工学系研
究科

山口

周

東京大学

和彦

Title

Name

Organization

Kazuhiko Tanaka

The University ofTokyo

大学院工学系研 Stress-induced phase transformation of Fe-Zn alloy formed in
hot-dip process
究科

Shu Yamaguchi

The University of
Tokyo

東京大学

大学院工学系研
究科

Kazuhiko Tanaka

The University of
Tokyo

正

名古屋大学

大学院工学研究 High pressure synthesis, crystal chemistry and physicalproperties of novel Zintl phases科

Masashi Hasegawa

Nagoya University

Tomoyuki
Hamaguchi

Nagoya University

〃

53

〃

田中

54

新規ジントル相の超高圧合成と結晶化学および
物性

長谷川

55

〃

濱口

朋之

名古屋大学

大学院工学研究科56

高圧印加による Li ドープα菱面体晶ボロンの作
製

木村

薫

東京大学

大学院新領域創 Synthesis of Li-dope alpha-rhombohedral boron by highpressurization
成科学研究科

Kaoru Kimura

The University of
Tokyo

57

〃

酒井

志徳

東京大学

大学院新領域創成科学研究科

Munenori Sakai

The University of
Tokyo

木村

薫

東京大学

大学院新領域創 High pressure synthesis of MoSi2 type iron aluminide, FeAl2
crystal
成科学研究科

Kaoru Kimura

The University of
Tokyo

飛田

一樹

東京大学

大学院新領域創成科学研究科

Kazuki Tobita

The University of
Tokyo

平岡

奈緒香

東京大学

大学院理学系研
Evaluation of structure of iridate thin films
究科

Naoka Hiraoka

The University of
Tokyo

根岸

真通

東京大学

大学院理学系研
究科

Masamichi Negishi

The University of
Tokyo

58
59
60

ISSP Activity Report 201761

高圧下での MoSi2 型構造の FeAl2 結晶の作製〃
イリジウム酸化物薄膜の構造評価
〃

〃

〃

〃

〃

〃

87

62

天然鉱物の微細組織と結晶性の実態

永嶌

真理子

山口大学

大学院創成科学 Evaluation of micro-texture and crystallinity of naturalminerals
研究科

Mariko Nagashima

Ymaguchi University

63

新規磁石材料の微細構造解析

齋藤哲治

千葉工業大学

工学部

Microstructural studies of new permanent magnet materials

Tetsuji Saito

Chiba Institute ofTechnology64

TEM によるコアシェル型プルシアンブルー類似体の局所構造解析

糸井

充穂

日本大学

医学部

TEM study of the local structure in core-shell nanoparticles
based on prussian blue analogues

Miho Itoi

Nihon University

65

ナノ構造材料を用いた高性能二次電池開発

細野

英司

産業技術総合研 省エネルギー研 Development of secondary battery with high performances byusing nanostructured materials
究所
究部門

Eiji Hosono

Advanced Industrial
Science andTechnology

66

misfit 単結晶の構造観察

小林

夏野

岡山大学

異分野基礎科学
Observation of local structure on misfit single crystal
研究所

Kaya Kobayashi

Okayama University

67

水中プラズマを用いたナノ粒子合成

後藤

拓

東京大学

大学院新領域創
Synthesis of nanoparticles via plasma processing in liquid
成科学研究科Taku Goto

The University of
Tokyo

88

No.
68

ISSP Activity Report 2017

69

課題名
準結晶・近似結晶の磁性に関する研究
〃

氏名

所属

Title

Name

Organization

田村隆治

東京理科大学

大学院基礎工学
Magnetism of quasicrystals and approximants
研究科

Ryuji Tamura

Tokyo University of
Science石川明日香

東京理科大学

大学院基礎工学研究科

Asuka Ishikawa

Tokyo University of
Science博

横浜国立大学

大学院工学研究 Magnetism and thermoelectric properties at high temperaturein A1-xSrxFeO3 (A : lanthanoid)院

Hiroshi Nakatsugawa

Yokohama National
University〃

70

A1-xSrxFeO3(A : ランタノイド ) の高温における中津川
磁性と熱電特性に関する研究

71

特異な電子状態を形成する遷移金属カルコゲナ
イドの磁気・輸送特性の評価

小林

慎太郎

名古屋大学

大学院工学研究 Magnetic and transport properties of transition metal
chalcogenides with unusual electronic states
科

Shintaro Kobayashi

Nagoya University

72

〃

中埜

彰俊

名古屋大学

大学院工学研究科〃

Akitoshi Nakano

Nagoya University

73

〃

鬼頭

俊介

名古屋大学

大学院工学研究
科〃

Rina Maeda

The University of
Tokyo

74

新規非酸化物系ぺロブスカイト型関連化合物の
磁気物性

長谷川

正

名古屋大学

大学院工学研究 Magnetism of novel perovskite-type related non-oxide
compounds科

Masashi Hasegawa

Nagoya University

75

〃

佐合

一樹

名古屋大学

大学院工学研究
科

Kazuki Sagou

Nagoya University

76

レアメタルフリー磁性材料 L10-FeCo の磁気特
性の解析

小嗣

真人

東京理科大学

基礎工学部

Masato Kotsugi

Tokyo University of
Science77

正 20 面体クラスター固体の伝導と磁性

木村

薫

東京大学

大学院新領域創 Transport and magnetic properties of Icosahedral Cluster
Solids
成科学研究科

Kaoru Kimura

The University of
Tokyo

廣戸

孝信

東京大学

大学院新領域創成科学研究科

Hiroto Takanobu

The University of
Tokyo

廣井

政彦

鹿児島大学

大学院理工学研 Study on the magnetic and electrical properties of Heusler
compounds
究科

Masahiko Hiroi

Kagoshima University

78
79

〃
ホイスラー型化合物の磁性と伝導の研究〃
Analysis of magnetic properties of rare-metal-free supermagnet "L10-FeCo"

〃

80

〃

大岡

隆太郎

鹿児島大学

大学院理工学研
究科

Ryutaro Ooka

Kagoshima University81

ハーフメタル型ホイスラー合金の磁性と輸送特性に関する研究

重田

出

鹿児島大学

大学院理工学研 Study on the magnetic and transport properties of half-metallic
Iduru Shigeta
Heusler alloys
究科

Kagoshima University

82

〃

大岡

隆太郎

鹿児島大学

大学院理工学研
究科

Kagoshima University〃〃

Ryutaro Ooka83

低次元鉄系化合物の電子物性に関する研究

青山

拓也

東北大学

大学院理学研究 Study on electronic properties of Fe-based materials with lowTakuya Aoyama
dimensional structure科

Tohoku University

84

新規フェロイック物質の開発

有馬

孝尚

東京大学

大学院新領域創
Exploration of new ferroics
成科学研究科The University of
Tokyo

Taka-hisa Arima

ISSP Activity Report 2017

No.

課題名

85

〃

徳永

祐介

東京大学

大学院新領域創成科学研究科〃

Yusuke Tokunaga

The University of
Tokyo

86

〃

阿部

伸行

東京大学

大学院新領域創成科学研究科〃Nobuyuki Abe

The University of
Tokyo

87

〃

松浦

慧介

東京大学

大学院新領域創成科学研究科〃

Keisuke Matsuura

The University of
Tokyo

88

〃

藤間

友理

東京大学

大学院新領域創成科学研究科〃Yuri Fujima

The University of
Tokyo

89

〃

荒木

勇介

東京大学

大学院新領域創成科学研究科〃

Yusuke Araki

The University of
Tokyo

90

〃

小池

仁希

東京大学

大学院新領域創成科学研究科〃Yoshiki Koike

The University of
Tokyo

91

〃

前島

夏奈

東京大学

大学院新領域創成科学研究科〃

Kana Maeshima

The University of
Tokyo

92

〃

中川

直己

東京大学

大学院新領域創成科学研究科〃

Naoki Nakagawa

The University of
Tokyo

93

〃

近江

毅志

東京大学

大学院新領域創成科学研究科〃Tsuyoshi Omi

The University of
Tokyo

94

〃

徳村

謙祐

東京大学

大学院新領域創成科学研究科〃Kensuke Tokumura

The University of
Tokyo

95

〃

吉澤

孟晃

東京大学

大学院新領域創成科学研究科〃

Takeaki Yoshizawa

The University of
Tokyo

96

〃

佐藤

樹

東京大学

大学院新領域創成科学研究科〃Tatsuki SatoThe University of
Tokyo

97

〃

海本

祐真

東京大学

大学院新領域創成科学研究科〃Yuma Umimoto

The University of
Tokyo

真帆人

横浜国立大学

大学院工学研究 Precipitation behavior and magnetic properties of finemagnetic particles in single crystals of Cu ‐ Ni base alloys
院

Mahoto Takeda

Yokohama National
University

慎太郎

横浜国立大学

大学院工学府

Shintaro Matai

Yokohama National
University

響

横浜国立大学

大学院工学府

Hibiki Sakakura

Yokohama National
University

98
99
100

氏名

Cu − Ni − X（X=Co,Fe）系単結晶性合金中の磁竹田性微粒子析出過程と磁気特性の関係〃

又井Cu 基ナノグラニュラー磁性体における磁気特性
坂倉と微細組織の関係

所属

Title

〃
The relationships between magnetic properties andmicrostructures in Cu based nano-granular materials

Name

Organization

89

No.

課題名

氏名

所属

90

Title

Name

Organization

Title

Name

Organization

物質合成・評価設備 U クラス / Materials Synthesis and Characterization U Class Researcher

ISSP Activity Report 2017

No.

課題名

氏名

所属

1

Sm1-xYxS 単結晶における負熱膨張特性の Y 組成
岡本
依存性

佳比古

名古屋大学

大学院工学研究 Y-content-dependence of negative thermal exoansion in
Sm1-xYxS single crystals
科

Yoshihiko Okamoto

Nagoya University2

高温高圧下における芳香族化合物の安定性

篠崎

彩子

北海道大学

大学院理学研究 Stability of aromatic hydrocarbons under high pressure andtemperature
院

Ayako Shinozaki

Hokkaido University

3

鉄カルコゲナイド物質における磁気特性測定

水上

雄太

東京大学

大学院新領域創
Magnetic properties measurements on iron chalcogenides
成科学研究科Yuta Mizukami

The University of
Tokyo

4

マイクロミキサを用いた機能性酸化物ナノ粒子
の連続合成

陶

kiwamu Sue

National Institute ofAdvanced Industrial
Science and Technology

5

コニカルらせん磁性体 CoCr2O4 における複合ド木村
メイン相関の解明のための試料準備

剛

東京大学

大学院新領域創 Investigation of coupled multiferroic domains in a conicalspiral magnet CoCr2O4
成科学研究科Tsuyoshi Kimura

The University of
Tokyo

6

ポリロタキサンを用いた高次構造の形成

前田

利菜

東京大学

大学院新領域創 Construction of higher order structure consisting ofpolyrotaxane
成科学研究科

Rina Maeda

The University of
Tokyo

7

プラズマ風洞による宇宙往還機の熱防護システ
ム (TPS) に関する動的酸化に関する研究

桃沢愛

東京都市大学

工学部

Ai Momozawa

Tokyo City University

8

〃

曽我

遼太

東京大学

大学院工学系研
究科〃

Ryota Soga

The University of
Tokyo

9

〃

田中

聖也

東京大学

大学院工学系研
究科〃

Seiya Tanaka

The University of
Tokyo

10

希土類サマリウムオルソフェライトの単結晶成
長とテラヘルツ波磁気共鳴分光

中嶋

誠

大阪大学

レーザー科学研 Terahertz magnetic resonance spectroscopy and single crystal
growth for samarium orthoferrite
究所

Makoto Nakajima

Osaka University

11

〃

邱

紅松

大阪大学

レーザー科学研
究所〃

Hongsong Qiu

Osaka University

12

〃

弘田

和將

大阪大学

レーザー科学研
究所〃

Kazumasa Hirota

Osaka University

産業技術総合研 化学プロセス研 Continuous synthesis of functional metal oxide nanoparticles
using a micromxer
究所
究部門

究

Research on dynamic oxidation of thermal protection system
by using plasma wind tunnel

13

鉄系超伝導体に対する元素マッピング

水上

雄太

東京大学

大学院新領域創Elemental mapping on iron-based superconductors
成科学研究科Yuta Mizukami

The University of
Tokyo

14

オスミウム含有廃液の超臨界水酸化・超臨界二酸化炭素抽出に関する研究

布浦

鉄兵

東京大学

環境安全研究セ Study on supercritical water oxidation and supercritical CO2
extraction of osmium-containing wastewater
ンター

Teppei Nunoura

The University of
Tokyo

15

〃

平井

晴菜

東京大学

大学院新領域創成科学研究科〃Haruna Hirai

The University of
Tokyo

16

〃

三好

列

東京大学

大学院新領域創成科学研究科〃Retsu Miyoshi

The University of
Tokyo

No.

課題名

17

フィチン酸の超臨界水ガス化挙動に関する検討

布浦

鉄兵

東京大学

環境安全研究セ Decomposition behavior of phytic acid in supercritical watergasification
ンター

Teppei Nunoura

The University of
Tokyo

18

〃

飯田

裕樹

東京大学

大学院新領域創成科学研究科Yuuki Iida

The University of
Tokyo

香取

浩子

東京農工大学

大学院工学研究
Magnetization measurements of polymorphism (Al,Fe)2GeO5
院

Hiroko Katori

高田早紀

東京農工大学

大学院工学府Saki Takada

強磁性体 Ln2Co12P7 (Ln= 希土類 ) を中心とした
太田
弱磁場中の磁化の研究

寬人

東京農工大学

大学院工学研究 Study of magnetization of ferromagnets Ln2Co12P7(Ln=lanthanoids) under low magnetic field院

Hiroto Ohta

優典

東京農工大学

大学院工学府〃Yusuke Kato

Title

Name

Organization

19
20
21
22

多形物質 (Al,Fe)2GeO5 の磁化測定
〃

〃

氏名

加藤

所属

Title

〃

〃

Name

Organization

Tokyo Universityof Agriculture andTechnology
Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology
Tokyo Universityof Agriculture andTechnology

長期留学研究員 / Long Term Young Researcher
No.

課題名

氏名

所属

ISSP Activity Report 2017

1

Sr2MO4(M=V, Cr) の高圧下結晶構造解析

嶋津

拓

千葉大学

大学院理学研究
Crystal structure analysis of Sr2MO4(M=V, Cr) under pressure
科

Taku Shimazu

Chiba University2

多重極限物性測定装置の開発と量子臨界物性の
研究

佐藤

和樹

大阪大学

Development of experimental measuring equipments under
大学院理学研究
multiplex extreme conditions and studies on quantum critical科
phenomena

Kazuki Sato

Osaka University3

時間分解角度分解光電子分光による 2H-NbSe2の光励起ダイナミクスの研究渡邉真莉

東京理科大学

理学部

Mari Watanabe

Tokyo University of
Science4

パルス幅可変レーザー及び加工の技術開発

高橋

孝

早稲田大学

先進理工学研究 Development of a variable pulse duration laser system andlaser machining technology
科

Takashi Takahashi

Waseda University

Ultrafast dynamics in 2H-NbSe2 by time-resolved
photoemission spectroscopy

短期留学研究員 / Short Term Young Researcher
No.
1

課題名
第一原理におけるゼーベック係数の計算

氏名
高

成柱

所属
大阪大学

Title

大学院基礎工学
Seebeck coefficient calculation from first-princple
研究科

Name
Ko Sonjy

Organization
Osaka University

91

92

平成 29 年度 共同利用課題一覧（後期）/ Joint Research List (2017 Latter Term)

ISSP Activity Report 2017

嘱託研究員 / Commission Researcher
No.

課題名

担当所員：森

氏名

所属

Name

Organization

初果
大学院生命ナノ
Theoretical study of phase transition mechanism induced by
システム科学研
H/D isotope effect in hydrogen-bonded molecular conductors
究科1

水素結合型分子導体における H/D 同位体効果による相転移機構の理論的研究

立川仁典

横浜市立大学

2

〃

長嶋

雲兵

計算科学振興財
研究部門
団

3

常圧で金属状態を示す純有機単一成分導体の開
発

御崎

洋二

愛媛大学

4

純有機単一成分超伝導体の開発

白旗

崇

久我

担当所員：中辻5

Title

Yokohama City
Uninersity

Umpei Nagashima

Foundation for
Computational Science

大学院理工学研 Development of purely organic single-component molecular
metals under ambient pressure
究科

Kenta Kimura

Ehime University

愛媛大学

大学院理工学研 Development of purely organic single-component molecularsuperconductors
究科Takashi Shirahata

Ehime University

健太郎

理化学研究所

放射光科学総合 Crystal strain at low temperatures in Yb-based quantum
critical material
研究センター

Kentarou Kuga

RIKEN

〃

知

イッテルビウム系量子臨界物質の極低温における格子ゆがみの研究担当所員：上床

Masanori Tachikawa

美也

6

磁性体の圧力効果

巨海

玄道

久留米工業大学 工学部

Effect of pressure on the Magnetic Materials

Gendo Oomi

Kurume Institute ofTechnology

7

多重極限関連圧力装置の調整

高橋

博樹

日本大学

文理学部

Adjustment of Cubic Anvil apparatus

Hiroki Takahashi

Nihon University

8

擬一次元有機物質の圧力下物性研究

糸井

充穂

日本大学

医学部

Study on pressure induced superconductivity of quasi organic
conductor

Miho Itoi

Nihon University

9

3d 遷移化合物に関する圧力効果

鹿又武

東北学院大学

工学総合研究所 Eiffect of pressure on the 3d transition compounds

Takeshi Kanomata

Tohoku Gakuin
University

10

希釈冷凍機温度で使用可能な 10GPa 級超高圧発
松林生装置の開発和幸

電気通信大学

大学院情報理工 Development of 10 GPa class high pressure apparatus for low
temperature
学研究科

KazuyukiMatsubayashi

The University
of ElectroCommunications

11

有機伝導体の圧力効果

村田惠三

大阪経済法科大 21 世紀社会総
Effect of pressure on the organic conductor
学
合研究センター

Keizo Murata

Osaka University of
Economics and Law

12

圧力下 NMR 測定法に関する開発

藤原

直樹

京都大学

Naoki Fujiwara

Kyoto University

大学院人間・環 Development of NMR measurement method under highpressure
境学研究科

No.

課題名

氏名

所属

Title

大学院理工学研
Pressure effect of rare earth 122 compounds
究科

Name

Organization

13

希土類 122 化合物における圧力効果

繁岡

透

山口大学

14

高圧下 X 線回折法の開発

江藤

徹二郎

久留米工業大学 工学部

Development of High Pressure X-ray diffraction measurements Tetsujiro Eto

Kurume Institute ofTechnology

15

低温用マルチアンビル装置の開発

辺土

正人

琉球大学

Development of multi-anvil apparatus for low temperature

Masato Hedo

University of the
Ryukyus16

磁化測定装置の開発

名嘉節

物質・材料研究 機能性材料研究
Development of the magnetometer機構
拠点Takashi Naka

National Institute forMaterials Science17

高圧下量子振動システムの開発

摂待

力生

新潟大学

理学部

Rikio Settai

Niigata University

鳥取大学

大学院工学研究 Development of quantum lattice model simulator integrating
theory, experiment, and data science科

Takeo Hoshi

Tottori University

名古屋大学

大学院工学研究
科

Tomohiro Sogabe

Nagoya University

担当所員：野口理学部

Development of quantum oscillation under high pressure

Toru Shigeoka

Yamaguchi University

博司

ISSP Activity Report 20179318

理論・実験・データ科学の融合を目指した量子格子模型シミュレータの開発

19

〃

曽我部

20

動的平均場近似に基づく第一原理計算パッケー
ジの高度化

大槻

純也

東北大学

大学院理学研究 Advancement of ab-initio program based on dynamical meanJyunya Otsuki
field theory
科

Tohoku University

21

〃

品岡

寛

埼玉大学

大学院理工学研
究科

Hiroshi Shinaoka

Saitama University

22

4G における共同利用推進

佐藤

卓

東北大学

多元物質科学研
Research and Support of General-Use at 4G
究所

Taku Sato

Tohoku University

23

〃

奥山

大輔

東北大学

多元物質科学研究所〃

Daisuke Okuyama

Tohoku University

24

〃

那波

和宏

東北大学

多元物質科学研究所〃

Kazuhiro Nawa

Tohoku University

25

6G における共同利用推進

富安

啓輔

東北大学

大学院理学研究
Research and Support of General-Use at 6G科

Keisuke Yomiyasu

Tohoku University

26

〃

岩佐

和晃

茨城大学

フロンティア応
用原子科学研究センター

Kazuaki Iwasa

Ibaraki University

藤田

全基

東北大学

金属材料科学研
Research and Support of General-Use at T1-2 and T1-3
究所

Masaki Fujita

Tohoku University

星

健夫
知広

〃

〃

担当：中性子科学研究施設

27

T1-2、T1-3 における共同利用推進〃

94
ISSP Activity Report 2017

No.

課題名

28

〃

南部

雄亮

東北大学

金属材料科学研究所〃

Yusuke Nambu

Tohoku University

29

〃

池田

陽一

東北大学

金属材料科学研究所〃

Yoichi Ikeda

Tohoku University

30

〃

鈴木

謙介

東北大学

金属材料科学研究所〃

Kensuke Suzuki

Tohoku University

木村

宏之

東北大学

多元物質科学研
Research and Support of General-Use at T2-2
究所

Hiroyuki Kimura

Tohoku University

坂倉

輝俊

東北大学

多元物質科学研究所

Terutoshi Sakakura

Tohoku University

31
32

T2-2 における共同利用推進
〃

氏名

所属

Title

〃

Name

Organization

33

C1-2 における共同利用推進

杉山

正明

京都大学

原子炉実験所Research and Support of General-Use at C1-2

Masaaki Sugiyama

Kyoto University34

C1-2、C2-3-1、C3-1-2 における共同利用推進

井上

倫太郎

京都大学

原子炉実験所Research and Support of General-Use at C1-2, C2-3-1 andC3-1-2

Rintaro Inoue

Kyoto University

35

C3-1-2、C2-3-1 における共同利用推進

日野

正裕

京都大学

原子炉実験所Research and Support of General-Use at C3-1-2 and C2-3-1

Masahiro Hino

Kyoto University36

C3-1-2 における共同利用推進

田崎

誠司

京都大学

大学院工学研究
Research and Support of General-Use at C3-1-2科

Seiji Tasaki

Kyoto University37

C1-3-mfSANS における共同利用推進

間宮広明

物質・材料研究 先端材料解析研
Research and Support of General-Use at C1-3-mfSANS
機構
究拠点

Hiroaki Mamiya

National Institute forMaterials Science

38

〃

古坂

道弘

北海道大学

大学院工学研究科〃

Michihiro Furusaka

Hokkaido University

39

〃

大沼

正人

北海道大学

大学院工学研究科〃

Masato Ohnuma

Hokkaido University

40

〃

藤原

健

産業技術総合研 計量標準総合セ
究所
ンター

〃

Takeshi Fujiwara

National Institute ofAdvanced Industrial
Science and Technology

41

C1-3、C3-1-2 における共同利用推進

北口

雅暁

名古屋大学

現象解析研究セ
Research and Support of General-Use at C1-3 and C3-1-2
ンター

Masaaki Kitaguchi

Nagoya University42

C1-3 における共同利用推進

清水

裕彦

名古屋大学

大学院理学研究
Research and Support of General-Use at C1-3科

Hirohiko Shimizu

Nagoya University

43

〃

広田

克也

名古屋大学

大学院理学研究
科〃

Katsuya Hirota

Nagoya University

44

〃

土川

雄介

名古屋大学

大学院理学研究科〃

Yusuke Tsuchikawa

Nagoya University

No.

課題名

45

〃

山形

豊

理化学研究所

光量子工学研究領域

ダイヤモンドアンビルセルを用いた高圧力・パルス強磁場下電気抵抗測定

狩野みか

日本工業大学

工学部

担当所員：徳永46

担当所員：辛

氏名

所属

Title
〃

Name

Organization

Yutaka Yamagata

RIKEN

Mika Kano

Nippon Institute ofTechnology

将史Electrical resistivity measurements under pressure and inpulsed magnetic fields using diamond anvil cell

埴

ISSP Activity Report 201795

47

スピン分解角度分解光電子分光による TaSi2 のスピン構造の研究

伊藤

孝寛

名古屋大学

シンクロトロン
Spin-resolved angle-resolved photoemission study of spin
光科学研究セン
texture of TaSi2
ター

Takahiro Ito

Nagoya University

48

高温超伝導体の高分解能光電子分光

藤森

淳

東京大学

大学院理学系研 Ultra-high resolution photoemission spectroscopy on high Tc
superconductor
究科

Atsushi Fujimori

The University of
Tokyo

49

60-eV レーザーを用いた時間分解光電子分光の
開発

石坂

香子

東京大学

大学院工学系研 The development of time-resolved photoemission using 60 eV
laser
究科

Kyoko Ishizaka

The University of
Tokyo

50

トポロジカル超伝導体の探索

坂野

昌人

東京大学

大学院工学系研Search for topological insulators
究科

Masato Sakano

The University of
Tokyo

51

鉄系超伝導体のレーザー光電子分光

下志万

理化学研究所

創発物性科学研
Laser-ARPES on Fe superconductor
究センター

Takahiro Shimojima

The University of
Tokyo

52

高分解能光電子分光による強相関物質の研究

横谷

尚睦

岡山大学

大学院自然科学
Ultra-high resolution study on strongly correlated materials
研究科

Takayoshi Yokoya

Okayama University

53

有機化合物の光電子分光

金井要

東京理科大学

理工学部

Kaname Kanai

Tokyo University of
Science54重い電子系ウラン化合物の高分解能光電子分光

藤森伸一

日本原子力研究 物質科学研究セ Ultra high resolution photoemission study on heavy fermion
Uranium compounds
開発機構
ンター

Shinichi FujimoriJapan Atomic Energy
Agency55

レーザー光電子分光による酸化物薄膜の研究

津田俊輔

物質・材料研究 機能性材料研究
Laser-Photoemission Study on Oxide Films
機構
拠点

Shunsuke Tsuda

National Institute forMaterials Science56

Mn 化合物の時間分解光電子分光

大川

万里生

東京理科大学

理学部

Time resolved Photoemission on Mn compounds

Mario Okawa

Tokyo University of
Science57

収差補正型光電子顕微鏡の建設と利用研究

小嗣真人

東京理科大学

基礎工学部

Construction and utilization research of aberration correction
photoelectron emission microscopy

Masato Kotsugi

Tokyo University of
Science58

時間分解・マイクロビームラインの開発と研究室

高輝度光科学研 応用分光物性グ
Development of micr- and time-resolved beamline
究センター
ループ

Takayuki Muro

Japan Synchrotron
Radiation Institute59

時間分解光電子顕微分光実験の技術開発

木下

高輝度光科学研 利用研究促進部 Technical development of time-resolved photoemission
microscopy measurement究センター
門Toyohiko Kinoshita

Japan Synchrotron
Radiation Institute

貴博

隆桂之
豊彦

Photoemission study on organic compounds

96
ISSP Activity Report 2017

No.

課題名

氏名

所属

60

光電子分光法を用いた各種分子性結晶の電子状態の研究及び装置の低温化

木須

孝幸

大阪大学

61

トポロジカル絶縁体の電子状態の解明

木村

昭夫

62

時間分解光電子分光を用いた強相関係物質の研
究

溝川

63

Name

Organization

大学院基礎工学 Research on electron state of molecular crystals using
photoemission spectroscopy
研究科

Takayuki Kisu

Osaka University

広島大学

大学院理学研究
Electronic-structure study of topological insulators
科

Akio Kimura

Hiroshima University

貴司

早稲田大学

理工学術院

Time-resolved photoemmission study on strongly-correlatedmaterials

Takashi Mizokawa

Waseda University

Si(111) 上単層タリウムの高次高調波を用いた時
坂本
間分解光電子分光一之

千葉大学

大学院融合科学 Time-reslved ARPES investigation of monolayer Thallium on
Si(111)
研究科

Kszuyuki Sakamoto

Chiba University

64

インジウム原子層超伝導体におけるラシュバス
ピン分裂の直接観察

内橋隆

国際ナノアーキ
Direct observation of Rashba effect-induced spin splitting in an
物質・材料研究
Takashi Uchihashi
テクトニクス研
indium atomic-layer superconductor
機構
究拠点

65

固体中のマヨラナ粒子の研究

佐藤

昌利

京都大学

基礎物理学研究 Study of Majorana Fermion in Solids by Laser Photoemission
Spectroscopy
所

Masatoshi Sato

Kyoto University

〃

松田

祐司

京都大学

大学院理学研究
科

Yuji Matsuda

Kyoto University

水溶液における新奇ケージドルシフェリンの励起状態の解明薄倉淳子

東京理科大学

理学部

Junko UsukuraTokyo University of
Science

大学院理学研究 Technical development of spin-resolved photoemission
spectroscopy measurement科

Akio Kimura

Hiroshima University

Taguchi Munetaka

Nara Instituteof Science andTechnology

Masato Kotsugi

Tokyo University of
Science66
担当所員：秋山67

担当所員：松田

Title

〃

英文
Elucidation of absorption spectra for newfangied caged
luciferin in aqueous solution

巌

68

スピン分解光電子分光の測定技術開発

木村

昭夫

広島大学

69

共鳴磁気光学カー効果の散乱理論研究田口宗孝

奈良先端科学技 物質創成科学研 Study of scattering theory for the resonant magneto-optical
Kerr effect術大学院大学究科

70

時間分解磁気光学実験の技術開発

小嗣真人

東京理科大学

基礎工学部

担当所員：原田

National Institute forMaterials Science

Technical development of time-resolved magneto-opticalexperiment

慈久

71

液中プラズマ印加水の軟 X 線吸収 / 発光分光技
術開発

寺嶋

和夫

東京大学

大学院新領域創 Technical development of soft X-ray absorption/emission
spectroscopy for water processed by in-liquid plasma
成科学研究科Kazuo Terashima

The University of
Tokyo

72

液中プラズマ印加によるナノ粒子分散特性評価と軟 X 線分光

伊藤

剛仁

東京大学

大学院新領域創 Characterization of nano-particle distribution in water
processed by in-liquid plasma and soft X-ray spectroscopy
成科学研究科Tsuyohito Ito

The University of
Tokyo

73

二次元原子薄膜トランジスタの電子状態のナノ分析 ( Ⅰ )

吹留

博一

東北大学

電気通信研究所 Nanoscale analysis of electronic states of graphene device

Hirokazu Fukidome

Tohoku University

No.

課題名

74

軟 X 線発光・共鳴非弾性散乱分光の磁気円・線二色性測定システムの構築

菅75

軟 X 線吸収／発光分光法によるリチウムイオン
電池電極材料の電子物性研究

細野

英司

76

〃

朝倉

77

高分解能光電子分光による酸化バナジウムの研
究

78

省エネ・創エネ・蓄電デバイスのオペランド分
光担当所員：和達

氏名
滋正

所属
大阪大学

産業科学研究所

Title
Construction of a noble system for circular and linear
dichroism in soft X-ray emission and RIXS spectroscopy

Name

Organization

Shigemasa Suga

Osaka University

産業技術総合研 省エネルギー研 Study on the electronic property of electrode materials for Liion batteries by soft X-ray absorption/emission spectroscopy
究所
究部門

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

大輔

産業技術総合研 エネルギー技術
究所
研究部門

Daisuke Asakura

National Institute ofAdvanced Industrial
Science and Technology

藤原

秀紀

大阪大学

大学院基礎工学
Study on vanadium oxides by high resolution Photoemission
研究科

Hidenori Fujiwara

Osaka University

尾嶋

正治

東京大学

放射光分野融合 Operando nano-spectroscopy for energy efficient, power
generation and energy storage devices
国際卓越拠点Masaharu Oshima

The University ofTokyo

大学院工学研究 Dynamics of valence transition in EuNi2（Si1-xGex)2 revealedby time-resolved XAS
科

Kojiro Mimura

Osaka Prefecture
University

〃

大樹

79

時間分解吸収分光による EuNi2（Si1-xGex)2 の価
三村
数転移ダイナミクスの解明

功次郎

大阪府立大学80

三次元 nanoESCA による実デバイスのオペラン
永村
ド電子状態解析直佳

物質・材料研究 先端材料解析研 Operando analysis of the electronic structure of actual devices
Naoka Ngamura
by 3DnanoESCA
機構
究拠点

National Institute forMaterials Science81

コヒーレント共鳴軟 X 線散乱による磁気ドメイン構造の観測裕一

情報統合型物
Observation of magnetic domain structure for ferromagnetic
物質・材料研究
質・材料研究拠thin films by means of resonant scatterin
機構
点

The University of
Tokyo

山崎

Yuichi Yamasaki

一般研究員 / General Researcher

ISSP Activity Report 2017

No.

課題名

担当所員：榊原

氏名

所属

Title

Name

Organization

俊郎

97

1

強相関電子系化合物の秩序相に対する結晶対称性および電子軌道の効果

横山

淳

茨城大学

理学部

2

〃

大島

佳樹

茨城大学

大学院理工学研究科

3

新規量子磁性体の低温物性

山口博則

大阪府立大学

4

〃

岡部

俊輝

5

極低温精密物性測定によるイジング反強磁性体
SmPt2Si2 の磁気相図の研究

田山孝

Effects of crystal symmetry and electronic state in orderedphase of strongly correlated electron systems

Makoto Yokoyama

Ibaraki University

Yoshiki Oshima

Ibaraki University

大学院理学系研 Low temperature physical properties of new quantum spinmaterials
究科

Hironori Yamaguchi

Osaka Prefecture
University

大阪府立大学

大学院理学系研
究科

Toshiki Okabe

Osaka Prefecture
University

富山大学

大学院理工学研 Magnetic diagram of Ising antiferromagnet SmPt2Si2 studied by
Takashi Tayama
low-temperature physical property measurements
究部

〃

〃

University of Toyama

98

No.

課題名

6

〃

ISSP Activity Report 2017

7
8

氏名
小柳

大士

磁気フラストレートした一次元量子スピン系
Rb2-xCsxCu2Mo3O12 の非磁性状態と反強磁性状 安井 幸夫
態(U,Th)Be13 及び U(Pd,Ni)2Al3 を含む重い電子系
超伝導体における対称性と磁気応答に関する研 清水 悠晴
究

所属

Title

Name

〃

Taishi Oyanagi

University of Toyama

Yukio Yasui

Meiji University

富山大学

大学院理工学教
育部

明治大学

理工学部

Antiferromagnetic State and Non-magnetic State ofMagnetically Frustrated One-dimensional Quantum Spin
System Rb2-xCsxCu2Mo3O12

東北大学

金属材料研究所

Superconducting symmetry and magnetic response of uranium
Yusei Shimizu
heavy-fermion systems (U,Th)Be13 and U(Pd,Ni)2Al3

9

Tb2Ti2O7 のスピン液体と量子臨界点

高津 浩

京都大学

大学院工学研究 A quantum spin liquid state and quantum critical point in
Tb2Ti2O7
科

10

比熱測定による鉄系超伝導体の超伝導対称性の
研究

加瀬

直樹

東京理科大学

理学部

11

重い電子系イッテルビウム化合物の超伝導探査大原繁男

名古屋工業大学

12

〃

兵藤

一志

矢口

担当所員：長田13

Tohoku University

Hiroshi Takatsu

Kyoto University

Naoki Kase

Tokyo University of
Science

大学院工学研究 Study of superconductivity in heavy-fermion ytterbium
compound科

Shigeo Ohara

Nagoya Institute ofTechnology

名古屋工業大学

大学院工学研究
科〃

Kazushi Hyodo

Nagoya Institute ofTechnology

宏

東京理科大学

理工学部

Transport properties of topological insulators and topologicalsuperconductors

Hiroshi Yaguchi

Tokyo University of
Science〃

Kitazawa Shouichi

Tokyo University of
Science

Transport measurements of Bi1-xSbx alloys in magnetic fields
for tuning the carrier concentrations

Hiroshi Yaguchi

Tokyo University of
Science〃

Ryo Ninohira

Tokyo University of
ScienceSuperconducting gap symmetry of the Fe-based
superconductors from specific heat measurements

俊人

トポロジカル絶縁体・超伝導体の輸送特性

14

〃

北澤

翔一

東京理科大学

大学院理工学研究科

15

混晶 Bi1-xSbx のキャリア数制御のための磁場中輸送特性測定矢口宏

東京理科大学

理工学部

16

〃

仁野平

諒

東京理科大学

大学院理工学研
究科担当所員：山下

Organization穣

17

超低温における dHvA 効果測定

宍戸寛明

大阪府立大学

大学院工学研究dHvA effect measurements at ultra-low temperatures
科

Hiroaki Shishido

Osaka Prefecture
University

18

超流動 3He 中のスピン流と電場の交差相関の探
索

山口

明

兵庫県立大学

大学院物質理学 Study of cross-correlation between spin flow and electric fieldin superfluid 3He
研究科

Akira Yamaguchi

University of Hyogo

19

〃

村川

智

東京大学

低温センター〃

Satoshi Murakawa

The University of
Tokyo

20

〃

白濱

圭也

慶應義塾大学

理工学部〃

Keiya Shirahama

Keio University

No.

課題名

氏名

所属

Title

Name

Organization

芝内

孝禎

東京大学

大学院新領域創Local magnetization measurements on high-Tc superconductors Takasada Shibauchi
成科学研究科The University of
Tokyo

〃

向笠

清隆

東京大学

大学院新領域創成科学研究科Kiyotaka Mukasa

The University of
Tokyo

23

ナノ・マイクロセンシングデバイスに関する研
究

米谷

玲皇

東京大学

大学院新領域創Research on nano- and microsensing devices
成科学研究科

Reo Kometani

The University of
Tokyo

24

〃

上木

瞭太郎

東京大学

大学院新領域創成科学研究科〃Ryotaro Ueki

The University of
Tokyo

25

〃

関根

瑞恵

東京大学

大学院工学系研
究科〃

Sekine Mizue

The University of
Tokyo

26

〃

塔下

大嗣

東京大学

大学院工学系研
究科〃

Taishi Toshita

The University of
Tokyo

27

〃

奥野

将人

東京大学

大学院工学系研
究科〃

Masato Okuno

The University of
Tokyo

28

〃

田中

航大

東京大学

大学院工学系研
究科〃

Kodai Tanaka

The University of
Tokyo

29

〃

吉原

健太

東京大学

大学院工学系研
究科〃

Kenta Yoshihara

The University of
Tokyo

神戸

士郎

山形大学

大学院理工学研Hall coefficient measurement of 2D curates
究科

Shiro Kambe

Yamagata University

島袋

義仁

山形大学

大学院理工学研
究科〃

Yoshihito
Shimabukuro

Yamagata University

羽山 和美

東京大学

大気海洋研究所

Optimization of the ablation condition by laser ablation, andits evaluation of etching

Kazumi Hayama

The University of
Tokyo

木俣

基

東北大学

金属材料研究所

Novel current response in non-centrosymmetric crystal andmagnetic structures

Motoi Kimata

Tohoku University

育三

東京学芸大学

自然科学系

Positron-annihilation studies of Al-Pd-Mn quasicrystal and its
approximant crystals

Ikuzo Kanazawa

Tokyo Gakugei
University

21

銅酸化物高温超伝導体の局所磁化測定

22
担当所員：勝本

ISSP Activity Report 201730

信吾

二次元銅酸化物のホール係数測定

31

〃

32

レーザーアブレーションにおけるアブレーショ
ン条件の最適化とそのエッチング評価

担当所員：大谷
33

99

34

義近

空間反転対称性の破れた結晶・磁気構造に発現する新奇電流応答

担当所員：小森〃文夫

Al-Pd-Ru 準結晶・近似結晶における空孔濃度の
金沢
研究

100
ISSP Activity Report 2017

No.

課題名

35

〃

中島

諒

東京学芸大学

大学院教育学研
究科〃

Makoto Nakajima

Tokyo Gakugei
University

36

〃

木村

薫

東京大学

大学院新領域創成科学研究科〃

Kaoru Kimura

The University of
Tokyo

37

〃

大島

永康

産業技術総合研 分析計測標準研
究所
究部門

〃

Nagayasu Oshima

Advanced Industrial
Science38

SiC 表面上の２次元 Sn および Pb 層の構造および電子状態の解明

田中

悟

九州大学

大学院工学研究
Analyses of 2D-Sn and Pb layers on SiC surfaces
院

Satoru Tanaka

Kyushu university

39

〃

安藤

寛

九州大学

大学院工学府

Hiroshi Ando

Kyushu university

田中

悟

九州大学

大学院工学研究
Analysis of electronic structures in graphene nanoribbons
院

Satoru Tanaka

Kyushu university

林

真吾

九州大学

大学院工学府Shingo Hayashi

Kyushu university

ビシコフスキー アントン

九州大学

大学院工学研究
Analyses of graphene nanoribbons by STS/STS
院

Visikovskiy Anton

Kyushu University

Kouhei Fukuma

Kyushu University40

グラフェンナノリボンの電子状態の観察

氏名

所属

Title

〃

Name

Organization

41

〃

42

グラフェンナノリボンの STM/STS による解析

43

〃

福間

洸平

九州大学

大学院工学府44

金属／半導体表面上の超薄膜およびナノ構造薄膜の磁化ダイナミックスの磁気光学的測定

河村紀一

日本放送協会

放送技術研究所

Study on magnetic dynamics of ultra-thin films and nanostructures on metal / semiconductor surfaces

NHK Science andNorikazu Kawamura Technology ResearchLaboratories

45

STM を用いた L10-FeNi 表面における N サーフ
小嗣ァクタント効果の解析

真人

東京理科大学

基礎工学部

Study of N surfactant effect on L10-FeNi by using STM

Masato Kotsugi

Tokyo University of
Science

真博

東京理科大学

大学院基礎工学研究科

Masahiro Saito

Tokyo University of
Science

大阪大学

産業科学研究所

Scanning tunneling microscopy/spectroscopy of atom/molecule
Shigemasa Suga
adsorbed Sm terminated (001)surface of SmB6

Osaka University

〃

〃

46

〃

齊藤

47

近藤トポロジカル絶縁体 SmB6 の Sm 終端面電子状態の吸着原子や分子による変化を探る走査トンネル顕微分光

菅48

Cu(001) 面上に形成した金属窒化物単原子層の構
山田
造

正理

中央大学

理工学部

Structure of monolayer metal nitrides on Cu(001)

Masamichi Yamada

Chuo University49

Si(111)4 × 1-In 基板上における In-Bi 表面合金の
中辻
電子状態

寛

東京工業大学

物質理工学院

Electronic structure of In-Bi surface alloy grown on Si(111)4 ×
1-In substrates

Kan Nakatsuji

Tokyo Institute ofTechnology

裕理

東京工業大学

物質理工学院〃

Yuri Shimokawa

Tokyo Institute ofTechnology

悟

九州大学

大学院工学研究 Analyses of structure and electronic states of Bi atoms on
SiC(0001).
院

Satoru Tanaka

Kyushu University

50
51

〃

滋正

下川

SiC(0001）上の Bi 吸着状態の構造および電子状
田中
態の解析

〃

No.

課題名

52

〃

尾家

翔太郎

九州大学

大学院工学府53

赤外吸収による水素終端 Si(110)-(1 × 1) 表面の
H-Si 伸縮振動モードの解明

須藤

彰三

東北大学

54

〃

河野

純子

東北大学

55

エピタキシャルシリセン、ゲルマネン及びそのヘテロ構造の低温走査トンネル顕微鏡観察

高村

由起子

北陸先端科学技 マテリアルサイ STM investigation of epitaxial silicene, germanene, and theirheterostructures
術大学院大学
エンス系

Yukiko YamadaTakamura

56〃

アントワーヌフロランス

北陸先端科学技 マテリアルサイ術大学院大学
エンス系〃

Antoine Fleurence

57

〃

米澤

隆宏

北陸先端科学技 マテリアルサイ術大学院大学
エンス系〃

Takahiro Yonezawa

重い電子系超伝導の実空間観察のための超低温・河江
強磁場の小型 STM の開発

達也

九州大学

Development of a miniature STM for low-temperature
大学院工学研究and high-magnetic-field measurements of heavy fermion
院
superconductors

Advanced Instituteof Science andTechnology

Tatsuya Kawae

Kyushu University

担当所員：𠮷信

所属

Title
〃

Name

Organization

Shotaro Oie

Kyushu University

H-Si stretching modes on the hydrogen-terminated大学院理学研究Si(110)-(1 × 1) surface studied by infrared absorption
科
spectroscopy

Suto Shozo

Tohoku University

大学院理学研究
科

Kono Junko

Tohoku University

淳

担当所員：長谷川

58

氏名

〃

幸雄
Advanced Instituteof Science andTechnology
Advanced Instituteof Science andTechnology

ISSP Activity Report 2017

59

〃

志賀

雅亘

九州大学

大学院工学府〃Shiga Masanobu

Kyushu University

60

〃

沖村

健吾

九州大学

大学院工学府〃Okimura Kengo

Kyushu University

サイズ制御したナノクラスーの低温 STM による
江口
物性評価

豊明

東北大学

大学院理学研究
Low-temperature STM study of size-controlled nanoclusters科

Toyoaki Eguchi

Tohoku University

Mihee Lee

Nara Insttituteof Science andTechnology

61

担当所員：リップマー

ミック

101

62

Co ドープ LaAlO3/SrTiO3 界面の構造と物性の
解明

李

63

傾斜組成エピタキシャル強誘電体薄膜の構造と
物性

丸山

伸伍

東北大学

大学院工学研究 Structural and physical property characterization of gradedcomposition epitaxial ferroelectric thin films
科

Shingo Maruyama

Tohoku University

64

〃

原田

龍馬

東北大学

大学院工学研究
科

Ryoma Harada

Tohoku University

エピタキシャル (Ba,Sr)TiO3 薄膜の歪みが焦電効
山田果に及ぼす影響の解明

智明

名古屋大学

大学院工学研究 Clarification of influence of strain on pyroelectric effect inepitaxial (Ba,Sr)TiO3 thin films
科

Tomoaki Yamada

Nagoya University

65

美希

奈良先端科学技 物質創成科学研 Investigation of the structure and physical properties of Codoped LaAlO3/SrTiO3 interface
術大学院大学
究科

〃

102

No.

課題名

66

〃

ISSP Activity Report 2017

担当所員：川島

氏名

所属

松尾

翔吾

名古屋大学

大学院工学研究
科

Title

Name

Organization〃

Shogo Matsuo

Nagoya University

直輝

67

擬一次元反強磁性スピン模型の離散磁気励起

鈴木隆史

兵庫県立大学

大学院工学研究 Discretized magnetic excitations in quasi one-dimensional
antiferromagnetic spin models
科

Takafumi Suzuki

University of Hyogo68

テンソルネットワーク繰り込み群法の応用

原田

健自

京都大学

大学院情報学研
Application of tensor renormalization group method
究科

Keiji Harada

Kyoto University

担当所員：上床美也

69

YbH2+x の磁性と伝導中村修

岡山理科大学研究 ･ 社会連携
Magnetic and transport properties in YbH2+x
センター

Osamu Nakamura

Okayama University of
Science70

MnNiGe-CoNiGe 系化合物の圧力下電気抵抗率
測定

伊藤

昌和

鹿児島大学

大学院理工学研
Electric resistivity of MnNiGe-CoNiGe under pressure
究科

Masakazu Ito

Kagoshima University

71

〃

恩田

圭二朗

鹿児島大学

大学院理工学研
究科

Keijiro Onda

Kagoshima University

Kiyoshi Torizuka

Musashino University〃
Studies on High Pressure Properties of Organic Molecular
Conductors

72

有機分子性導体の高圧物性の研究

鳥塚

潔

武蔵野大学

教育学部

73

混合原子価バナジウム燐酸化物の単結晶の圧力
下磁気・輸送特性

小林

慎太郎

名古屋大学

大学院工学研究 Magnetic and transport properties of single crystals of a mixedShintaro Kobayashi
valent vanadium phosphorus oxide under pressure
科

Nagoya University

74

Ni-Mn-Ga 系ホイスラー合金の電気伝導と磁気特江藤性に関する研究徹二郎

久留米工業大学

建築・設備工学 Study of electrical conduction and magnetic properties in NiMn-Ga Heusler alloys
科

Tetsujiro Eto

Kurume Institute ofTechnology

75

高圧下における Eu 化合物の価数転移の探索

大貫

惇睦

琉球大学

理学部

Yoshichika Onuki

University of the
Ryukyus

本多

史憲

東北大学

金属材料研究所

Fuminori Honda

Tohoku University

76〃

Investigation of valence transition on Eu compounds underhigh pressure〃77

不純物を用いた高圧氷 VI 相の秩序化の観測

山根

崚

東京大学

大学院理学系研 Observation of ordering of ice VI using impurities under highpressure
究科

Yamane Ryo

The University of
Tokyo

78

多形化合物 RIr2Si2(R= 希土類）の結晶育成と物
質評価 3

繁岡

透

山口大学

大学院創成科学 Crystal growth and characterization of polymorphic
compounds RIr2Si2(R=rare earth) 3
研究科

Toru Shigeoka

Yamaguchi University

79

〃

内間

清晴

沖縄キリスト教
総合教育系
短期大学

Kiyoharu Uchima

Okinawa Christian
Junior College

繁岡

透

山口大学

Toru Shigeoka

Yamaguchi University

80

三元化合物 PrPd2Si2 の結晶育成〃

大学院創成科学
Crystal growth of ternary compound PrPd2Si2
研究科

No.

課題名

81

〃

82

多形化合物 RIr2Si2(R= 希土類 ) の磁気特性

氏名

所属

内間

清晴

沖縄キリスト教
総合教育系
短期大学

内間

清晴

沖縄キリスト教
総合教育系
短期大学

Title
〃
Magnetic characteristics of polymorphic compounds
RIr2Si2(R=rare earth)

Name

Organization

Kiyoharu Uchima

Okinawa Christian
Junior College

Kiyoharu Uchima

Okinawa Christian
Junior College

Toru Shigeoka

Yamaguchi University

Hisada Akihiko

Tokushima University

83

〃

繁岡

透

山口大学

大学院創成科学研究科

84

鉄カルコゲナイド系低次元化合物の探索とその
圧力効果

久田

旭彦

徳島大学

大学院社会産業 Synthesis and pressure-effect study of low-dimensional ironchalcogenide compound
理工学研究部

85

DAC を用いた高圧下 X 線回折

狩野

みか

日本工業大学

共通教育系（物 X-ray diffraction measurements under high pressure by using aMika Kano
DAC
理）

Nippon Institute ofTechnology

86

希土類化合物 Ce3CoSn6 の圧力下電気抵抗・磁
化測定

脇舎

和平

横浜国立大学

大学院工学研究
Pressure effects on the magnetic properties of Ce3CoSn6
院

Kazuhei Wakiya

Yokohama National
University

87

〃

木村

美波

横浜国立大学

大学院工学府Minami Kimura

Yokohama National
University

本多

史憲

東北大学

金属材料研究所 Effect of Pressure on the magnetism of uranium compounds

Fuminori Honda

Tohoku University

仲村

愛

東北大学

金属材料研究所

Ai Nakamura

Tohoku University

摂待

力生

新潟大学

理学部

Rikio Settai

Niigata University

新潟大学

大学院自然科学研究科〃

Takuto Koitabashi

Nigata University

88
89
90

ISSP Activity Report 2017

91
92
93
94
95
96

103

97

ウラン化合物の磁性の圧力効果〃
CeAl の圧力下電気抵抗測定〃
HoRh2Si2 単結晶の輸送特性（2）〃EuMn2Ge2 単結晶の磁化測定〃
HoRh2Si2 の La 置換系化合物の単結晶育成
〃

小板橋

拓斗

〃

〃

〃
Resistivity measurement in CeAl under pressure

藤原

哲也

山口大学

大学院創成科学Transport property of HoRh2Si2 II研究科

Tetsuya Fujiwara

Yamaguchi University

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Magnetization measurements of EuMn2Ge2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Single crystal growth of La substituted HoRh2Si2 compounds
研究科

Tetsuya Fujiwara

Yamaguchi University

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

〃

〃

〃

104

No.

課題名

98

CeZn2Ge2 単結晶の磁化測定

ISSP Activity Report 2017

99
100
101
102

〃

氏名

Title

Name

Organization

藤原

哲也

山口大学

大学院創成科学
Magnetization measurements of CeZn2Ge2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

平山

拓斗

山口大学

大学院創成科学研究科

Takuto Hirayama

Yamaguchi University

出

鹿児島大学

大学院理工学研 Study on pressure-induced martensitic phase transformation in
Iduru Shigeta
Co-based Heusler alloys
究科

Kagoshima University

隆太郎

鹿児島大学

大学院理工学研
究科

Ryutaro Ooka

Kagoshima University

康平

東京大学

大学院新領域創 Studies on the T-P-x three-dimentional electronic phase
diagram of iron-based superconductor FeSe1-xSx
成科学研究科

Kohei Matsuura

The University ofTokyo

Naofumi Aso

University of the
RyukyusCo 基ホイスラー合金における圧力誘起マルテン
重田
サイト変態に関する研究
〃

所属

大岡

鉄系超伝導体 FeSe1-xSx の温度ー圧力ー化学置換松浦
量の三次元電子相図の研究〃〃

Evaluation of fundamental physical properties in
Yb(Co1-xIrx)2Zn20

103 Yb(Co1-xIrx)2Zn20 の 基本物性評価

阿曽

尚文

琉球大学

理学部

104

〃

佐藤

信

琉球大学

大学院理工学研
究科〃

Shin Sato

University of the
Ryukyus

105

〃

津堅

涼

琉球大学

大学院理工学研
究科〃

Ryo Tsuken

University of the
Ryukyus

106

〃

瑞慶覧

琉球大学

大学院理工学研
究科〃

Chousei Zukeran

University of the
RyukyuNaofumi Aso

University of the
Ryukyus

Miiru Morishima

University of the
Ryukyus

長星

107 YbCo2Zn20 置換系試料の圧力効果

阿曽

尚文

琉球大学

理学部

108

盛島

実竜

琉球大学

大学院理工学研究科

109 (Mn,Cr) 基三元化合物の磁気特性

三井

好古

鹿児島大学

大学院理工学研
Magnetic properties of (Mn,Cr)-based ternary alloys
究科

Yoshifuru Mitsui

Kagoshima University

110

増満

勇人

鹿児島大学

大学院理工学研
究科

Hayato Masumitsu

Kagoshima University

村田惠三

大阪経済法科大 21 世紀社会総 Effect of pressure medium on the properties of organic
学
合研究センター conductor

Keizo Murata

Osaka University of
Economics and Law

高圧力下における Mn 基および Fe 基 4 元磁性体
小山
の磁気特性

佳一

鹿児島大学

大学院理工学研 Magnetic properties of Mn and Fe-based quaternary magnets
under high pressures
究科

Keiichi Koyama

Kagoshima University

尾上

昌平

鹿児島大学

大学院理工学研
究科

Masahira Onoue

Kagoshima University

辺土

正人

琉球大学

理学部

〃

〃

111 有機伝導体の物性に対する圧力媒効果
112
113

〃

114 圧力誘起価数転移の探索と高圧下輸送特性

Pressure effect of doped YbCo2Zn20 systems〃〃〃

Searching of pressure-induced valence transition and transport
Masato Hedo
properties under high pressure

University of the
Ryukyus

No.

課題名

115

〃

伊覇

航

琉球大学

大学院理工学研
究科

116

反転対称性のない遷移金属間化合物とその関連物質の高圧下輸送特性

仲間

隆男

琉球大学

理学部

117

〃

垣花

将司

琉球大学

大学院理工学研
究科

118 遷移金属化合物の高圧力下の輸送特性

仲間

隆男

琉球大学

理学部

119

川勝

祥矢

琉球大学

大学院理工学研
究科

希土類ラーベス化合物 RAl2 の異方的磁気体積効
大橋
果

政司

金沢大学

理工研究域

120

〃

氏名

所属

Title
〃

Name
Wataru Iha

Transport properties of non-centrosymmetric transition metals
Takao Nakama
compounds under high pressure〃
Pressure effect on transport properties of transition metalcompounds〃
Anisotropic magnetovolume effect of rare earth Lavescompound RAl2

Organization
University of the
Ryukyus
University of the
Ryukyus

Masashi Kakihana

University of the
Ryukyus

Takao Nakama

University of the
Ryukyus

Shoya Kawakatsu

University of the
Ryukyus

Masashi Ohashi

Kanazawa University

Masahiro Miyagawa

Kanazawa University

Masashi Ohashi

Kanazawa University

Hiroaki Nakanishi

Kanazawa University

121

〃

宮川

昌大

金沢大学

大学院自然科学研究科

122

強相関電子系化合物における圧力および磁場誘起量子相転移の探索

大橋

政司

金沢大学

理工研究域

123

〃

中西

裕昭

金沢大学

大学院自然科学研究科

Co 系ホイスラー合金の電気抵抗測定によるマル安達
テンサイト変態温度の高圧効果

義也

山形大学

Pressure effect of the martensitic transition temperature by the
大学院理工学研measurements of the electrical resistivity for the Co-Heusler
Yoshiya Adachi
究科
alloys.

Yamagata University

小木

雄貴

山形大学

大学院理工学研
究科

Yuki Ogi

Yamagata University

新規セリウム化合物 CePd2Al8 における量子臨界
中島
点の探索

美帆

信州大学

理学部

Miho Nkashima

Shinshu University

124

ISSP Activity Report 2017

125
126

〃

〃
Pressure and field induced quantum phase transition instrongly correlated electron systems〃〃
Search for quantum critical point in a new Ce compound
CePd2Al8

105

〃

中村

優希

信州大学

大学院総合理工学研究科

Yuki Nakamura

Shinshu University128

三角格子反強磁性体 Li1+xZn2-yMo3O8 の磁気励
起

那波

和宏

東北大学

多元物質科学研
Spin excitations in triangular antiferromagnet Li1+xZn2-yMo3O8 Kazuhiro Nawa
究所

Tohoku University

129

〃

東北大学

大学院理学研究
科

Sandvik Kim

Tohoku University

東北大学

多元物質科学研
Magnetism of pyrochlore antiferromagnet Na3T(CO3)2Cl究所

Kazuhiro Nawa

Tohoku University

127
担当所員：吉澤

130

〃

英樹

サンドヴィック キム

パイロクロア格子反強磁性体 Na3T(CO3)2Cl の磁
那波
性

和宏

〃

106

No.

課題名

131

〃

氏名

所属

Title

Name

Organization〃

Ryo Murasaki

Tohoku University

ISSP Activity Report 2017

村崎

遼

東北大学

大学院理学研究科

132 歪んだ籠目格子系 Yb3Ni11Ge4 の低温比熱

佐藤

卓

東北大学

多元物質科学研 Low-temperature heat capacity of the distorted kagome-lattice
Taku J Sato
compound Yb3Ni11Ge4
究所

Tohoku University

133

〃

那波

和宏

東北大学

多元物質科学研究所〃

Kazuhiro Nawa

Tohoku University

134

〃

高橋

満

東北大学

大学院理学研究科〃

Mitsuru Takahashi

Tohoku University

135 YbCo2Zn20 置換系試料の極低温比熱測定 III

阿曽

尚文

琉球大学

理学部

Naofumi Aso

University of the
Ryukyus

136

〃

諸見里

真嗣

琉球大学

大学院理工学研
究科〃

Masatsugu
Moromizato

University of the
Ryukyus

137

〃

瑞慶覧

長星

琉球大学

大学院理工学研
究科〃

Chousei Zukeran

University of the
Ryukyus138

Ce5Si3 単結晶試料の高エネルギー X 線ラウエ装
置による結晶方位同定

小林

理気

琉球大学

理学部

Alignment of Ce5Si3 single crystals by high-energy X-ray Lauediffaction

Riki Kobayashi

University of the
Ryukyus139

中性子非弾性散乱実験に向けた単結晶試料の軸
立て

阿部

伸行

東京大学

大学院新領域創 Preparation of single crystals for the measurement of inelastic
neutron scattering
成科学研究科Nobuyuki Abe

The University of
Tokyo

140

〃

松浦

慧介

東京大学

大学院新領域創成科学研究科〃

Keisuke Matsuura

The Universisty of
Tokyo

141

〃

近江

毅志

東京大学

大学院新領域創成科学研究科〃Tsuyoshi Omi

The University of
Tokyo

142

〃

荒木

勇介

東京大学

大学院新領域創成科学研究科〃Araki Yusuke

The University of
Tokyo

143

〃

吉澤

孟晃

東京大学

大学院新領域創成科学研究科〃

Takeaki Yoshizawa

The University ofTokyo

144 熱電材料 SnSe 系の単結晶の軸立て

萩原雅人

高エネルギー加 物質構造科学研
Crystal alignment of thermoelectric material system SnSe
速器研究機構究所

Masato Hagihara

High Energy
Accelerator Research
Organization

145 蜂の巣格子量子磁性体 RuCl3 の結晶方位決定

田中秀数

東京工業大学

Hidekazu Tanaka

Tokyo Institute ofTechnology

担当所員：益田

担当所員：嶽山

Specific heat measurement at very low temperature on
YbCo2Zn20 systems III

隆嗣

正二郎

理学院

Determination of crystallographic orientation of honeycomblattice quantum magnet RuCl3

No.

課題名

146

磁気光学測定を用いたハロゲン化金属ペロブス
カイト型結晶の励起子特性の研究

中村

唯我

東京大学

大学院工学系研 Study on excitonic properties of organometallic lead halide
perovskite using magneto-optic mesurement
究科

Yuiga Nakamura

The University of
Tokyo

147

超強磁場磁気光学による Cu3Mo2O9 の磁化プラ
黒江
トーの研究 II

晴彦

上智大学

理工学部

Ultra-high magnetic field magneto-optical approach to thestudy of magnetization plateau in Cu3Mo2O9 using vertical
single-turn coil system II

Haruhiko Kuroe

Sophia University

Interplay between unconventional superconductivity andmagnetism in heavy-fermion compounds

Makoto Yokoyama

Ibaraki University

Kohei Suzuki

Ibaraki University

担当所員：金道

氏名

所属

Title

Name

Organization

浩一

ISSP Activity Report 2017148

重い電子系化合物が示す非従来型超伝導と磁性
の相関

横山

淳

茨城大学

理学部

149

〃

鈴木

康平

茨城大学

大学院理工学研究科

150 新規カゴメ格子フッ化物の磁性

植田

浩明

京都大学

大学院理学研究
Magnetism of novel fluorides with a kagome lattice科

Hiroaki Ueda

Kyoto University

151

白上

龍

京都大学

大学院理学研究科

Ryu Shirakami

Kyoto University

152 MnNiGe-CoNiGe 系化合物の高磁場磁化測定

伊藤

昌和

鹿児島大学

大学院理工学研High magnetic field magnetization of MnNiGe-CoNiGe system
究科

Masakazu Ito

Kagoshima University

153

〃

恩田

圭二朗

鹿児島大学

大学院理工学研
究科

Keijiro Onda

Kagoshima University

154

幾何学的フラストレート磁性体の強磁場磁化測
定

菊池

彦光

福井大学

学術研究院工学
Magnetization measurements of the frustrated magnets
系部門

Hikomitsu Kikuchi

University of Fukui

155

〃

三浦

俊亮

福井大学

大学院工学研究
科

Shunsuke Miura

University of Fukui

156

新規イッテルビウム化合物の量子臨界点近傍における強磁場磁化測定

道岡

千城

京都大学

大学院理学研究 High-field magnetization of novel Yb based compounds in thevicinity of the quantum critical point
科

Chishiro Michioka

Kyoto University

157

〃

引地

将仁

京都大学

大学院理学研究科

Masahito Hikiji

Kyoto University

静岡大学

学術院理学領域 Physical property of rare earth compounds at pulse magnet

Takao Ebihara

Shizuoka University

Takuma Murakoshi

Shizuoka University

〃

〃

〃

〃

〃

158 サブメガガウス領域での希土類物性研究

海老原

159

村串

拓真

静岡大学

大学院総合科学
技術研究科(U,Th)Be13, U(Pd,Ni)2Al3 及び関連する重い電子清水系化合物における強磁場物性

悠晴

東北大学

金属材料研究所

High-field physical properties of (U,Th)Be13, U(Pd,Ni)2Al3, andYusei Shimizu
other heavy-fermion systems

Tohoku University

直樹

東京理科大学

理学部

Upper critical field of the BiCh2-based superconductors

Tokyo University of
Science

160

〃

107

161 BiCh2 系超伝導体の異常に大きな上部臨界磁場

加瀬

孝雄

〃

〃

Naoki Kase

108

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

162 MnCoGe 基化合物の磁気相転移

三井

好古

鹿児島大学

大学院理工学研
Magnetic phase transition of MnCoGe-based compound
究科

Yoshifuru Mitsui

Kagoshima University

163

〃

尾上

昌平

鹿児島大学

大学院理工学研
究科

Masahira Onoue

Kagoshima University

164

熱物性測定プローブの開発と低温強磁場中での
性能評価

小野

俊雄

大阪府立大学

大学院理学系研 Development and performance evaluation of the measuringprobe for thermophysical properties
究科

Toshio Ono

Osaka Prefecture
University

165

〃

柴田

尚樹

大阪府立大学

大学院理学系研
究科

Yoshiki Shibata

Osaka Prefecture
University

166 金属ナノ結晶の磁化特性

稲田

貢

関西大学

システム理工学
Magnetic properties of metal nanocrystals部

Mitsuru Inada

Kansai University

167

〃

越田

樹

関西大学

システム理工学部

Tatsuki Koshida

Kansai University

168

金属ナノクラスターネットワークの磁気抵抗測
定

稲田

貢

関西大学

システム理工学 Electronic transport properties of metal cluster networks underMitsuru Inada
high-magnetic field部

Kansai University

169

〃

森脇

有哉

関西大学

システム理工学部

Yuya Moriwaki

Kansai University

170

近藤半導体 (Yb, R)B12 (R=Zr, Sc, Y) の 80T 級
磁場下での強磁場物性

伊賀

文俊

茨城大学

理学部

Fumitoshi Iga

Ibaraki University

171

〃

横道

啓省

茨城大学

大学院理工学研
究科

Keisei Yokomichi

Ibaraki University

172

topological insulator SmB6,YbB12 の磁化特性
と比熱

伊賀

文俊

茨城大学

理学部

173

〃

平野

航

茨城大学

大学院理工学研
究科

文俊

茨城大学

理学部

松浦

航

茨城大学

大学院理工学研
究科

神戸

高志

岡山大学

静岡大学

学術院理学領域174

高圧合成希土類 6 及び 12 ホウ化物の磁化特性と
伊賀
比熱

175

〃

176 アルカリ超酸化物 AO2 の強磁場磁化
担当所員：徳永〃〃〃〃High field physical property of Kondo insulator (Yb, R)B12(R=Zr, Sc, Y) up to 80T class by using the pulse magnet〃

Magnetic and thermal properties of topological insulator SmB6
Fumitoshi Iga
and YbB12〃

Ibaraki University

Wataru Hirano

Ibaraki University

Fumitoshi Iga

Ibaraki University

Wataru Matsuura

Ibaraki university

大学院自然科学 High-magnetic field magnetization in alkali-metal superoxide,
AO2
研究科

Takashi Kambe

Okayama University

Physical properties in rare earth intermetallic compounds athigh magnetic fields

Takao Ebihara

Shizuoka University

Magnetic and thermal properties of rare earth hexa-borides
and dodeca-borides produced by high pressure synthesis〃

将史

177 希土類金属間化合物の強磁場物性研究

海老原

孝雄

No.

課題名

178

〃

氏名
鈴木

文登
孝雄

所属
静岡大学

大学院総合科学
技術研究科

静岡大学

学術院理学領域

Title

Name

〃

Suzuki Fumito

Shizuoka University

Takao Ebihara

Shizuoka University

Jumaeda Jatmika

Shizuoka University

Electronic states at high magnetic fields in Heavy Fermion
systems

Organization

ISSP Activity Report 2017

179 重い電子系における強磁場中の電子状態研究

海老原

180

〃

ジュマエダ
ジャトミカ

静岡大学

大学院総合科学技術研究科

181

CoV 基形状記憶合金における磁場誘起マルテン
サイト変態とその場組織観察

キョ

キョウ

東北大学

Magnetic field-induced martensitic transformation and in situ
大学院工学研究
observation of microstructure on CoV-based shape memory科
alloysXiao Xu

Tohoku University

182

強磁性体 Ln2Co12As7 (Ln= 希土類 ) の強磁場磁化過程の研究太田寛人

東京農工大学

大学院工学研究 Study of magnetization of Ln2Co12As7 (Ln=lanthanoids) underhigh magnetic field院

Hiroto Ohta

Tokyo Universityof Agriculture andTechnology

183

〃

加藤

優典

東京農工大学

大学院工学府Yusuke Kato

Tokyo Universityof Agriculture andTechnology184

パルス強磁場を用いた半金属における磁場誘起
電子相転移の研究

矢口宏

東京理科大学

理工学部

Hiroshi Yaguchi

Tokyo University of
Science

185

〃

仁野平

東京理科大学

大学院理工学研
究科〃

Ryo Ninohira

Tokyo University of
Science

High-Field magnetization of CenTmIn2m+3n(T: transition metal)

Rikio Settai

Niigata University

Ryoma Tsunoda

Niigata University

Fuminori Honda

Tohoku University

Ai Nakamura

Tohoku University諒〃〃Study of Field-Induced Electronic Phase Transitions in
Semimetals Using Pulsed Magnetic Fields

109

186 CenTmIn2m+3n(T: 遷移金属 ) の強磁場磁化測定

摂待

力生

新潟大学

理学部

187

〃

角田

竜馬

新潟大学

自然科学研究科

188

ウラン化合物の強磁場下における磁気相図の研
究

本多

史憲

東北大学

金属材料研究所

189

〃

仲村

愛

東北大学

金属材料研究所

190

磁場を用いた液晶における配向および誘電特性
制御

木村

剛

東京大学

大学院新領域創 Magnetic control of orientation and dielectricity in liquid
crystals
成科学研究科Tsuyoshi Kimura

The University of
Tokyo

191

多層ディラック電子系磁性体における量子極限
近傍のランダウ準位構造

酒井

英明

大阪大学

大学院理学研究 Study of Landau level formation near the extreme quantum
limit for a layered Dirac magnet
科

Hideaki Sakai

Osaka University

192

〃

鶴田

圭吾

大阪大学

大学院理学研究科〃

Keigo Tsuruda

Osaka University

193

〃

西村

拓也

大阪大学

大学院理学研究
科〃

Takuya Nishimura

Osaka University

194

〃

藤村

飛雄吾

大阪大学

大学院理学研究科〃

Hyugo Fujimura

Osaka University〃
Study of magnetic phase diagram on uranium compounds
under high magnetic field
〃

110

No.
195

課題名

氏名

Weyl 半金属 TrTe2(Tr = W, Mo) の高純度単結晶
東中を用いた SdH 振動によるフェルミ面の探索

隆二

Title

Name

Organization

ISSP Activity Report 2017

首都大学東京大学院理工学研 Investigation of Fermi surface of Weyl semimetal, TrTe2(Tr = W, Mo) by SdH oscillation
究科

Ryuji Higashinaka

Tokyo Metropolitan
University

首都大学東京大学院理工学研
究科〃

Jha Rajveer

Tokyo Metropolitan
University〃

Shota Onishi

Tokyo Metropolitan
University

196

〃

ジャー
ャビー

197

〃

大西

翔太

首都大学東京大学院理工学研
究科

198

正四角台塔型反強磁性体の強磁場中電気磁気特
性の測定

木村

健太

大阪大学

大学院基礎工学 High-field magnetoelectric properties of square-cupola-based
antiferromagnets
研究科

Kenta Kimura

Osaka University

199

非破壊パルスマグネットを用いた Cu3Mo2O9 の黒江
磁化プラトーの Zn 置換効果

晴彦

上智大学

理工学部

Haruhiko Kuroe

Sophia University

高橋

英史

東京大学

大学院工学系研
Magnetotransport properties on the magnetic semimetal EuP3
究科

Hidefumi Takahashi

The University ofTokyo

パルス磁場による鉄ヒ素超伝導体の多極子秩序
の研究

栗原

綾佑

新潟大学

大学院自然科学 Study of Multipole Ordering in Iron Pnictide Superconductor
under Pulse Magnetic Fields
研究科

Ryousuke Kurihara

Niigata University

202 極性キラルらせん磁性体における電気磁気効果

徳永

祐介

東京大学

大学院新領域創
Magnetoelectric properties of the polar-chiral helimagnet
成科学研究科

Yusuke Tokunaga

The University of
Tokyo

203

〃

荒木

勇介

東京大学

大学院新領域創成科学研究科〃

Yusuke Araki

The University of
Tokyo

204

〃

佐藤

樹

東京大学

大学院新領域創成科学研究科〃

Tasuki SatoThe University ofTokyo

大学院工学系研 Investigation of quantum transport phenomena in Cd3As2 films
Masaki Uchidawith reduced carriers
究科

200 磁性半金属 EuP3 における超強磁場磁気輸送
201

ラジ

所属

205

キャリア制御した Cd3As2 薄膜における量子輸送
打田
現象の解明

正輝

東京大学

206

ホイスラー合金 NiCoMnGa のパルス強磁場磁歪木原
測定及び磁気熱量効果測定

工

東北大学

207

キラル合金 Mn(Si,Ge) における強磁場まで安定なトポロジカルスピン構造の解明

金澤

直也

東京大学

208 ハニカム構造を持つ Co4Ta2O9 の電気磁気効果

阿部

伸行

東京大学

209

ペロフスカイト型 Ir 酸化物における磁気伝導測
定

藤岡

淳

210

反強磁性酸化物 / 重金属積層膜に発現する新奇磁木俣
気抵抗の解明基

担当所員：松田康弘

Zn-substitution effects on magnetization plateau in Cu3Mo2O9

Magnetostriction and Magnetocaloric effect Measurements
金属材料研究所 under the Pulsed High Magnetic fields in Heusler Alloy
NiCoMnGa
Investigation on robust topological spin topological spin
大学院工学系研
textures under high magnetic fields in the chiral alloy
究科
Mn(Si,Ge)The University ofTokyo

Takumi Kihara

Tohoku University

Naoya Kanazawa

The University ofTokyo

大学院新領域創 Magnetoelectric effect in honeycomb lattice antiferromagnet
Co4Ta2O9
成科学研究科Nobuyuki Abe

The University of
Tokyo

東京大学

大学院工学系研
Investigation of magneto-transport in perovskite Ir-oxide
究科

Jun Fujioka

The University of
Tokyo

東北大学

金属材料研究所

Motoi Kimata

Tohoku University

Novel magnetoresistance in antiferromagnetic oxide/heavy
metal layers

No.

課題名

氏名

近藤半導体 (Yb,R)B12、価数揺動物質 (Y,Tm)B6
211 のワンターンコイル 120T パルス磁場下での強磁 伊賀
場磁化過程

文俊

茨城大学

理学部

担当所員：辛

所属

Title

Name

Organization

High field magnetization of Kondo insulator (Yb,R)B12 andvalence fluctuation material (Y,Tm)B6 by using one-turn coil in Fumitoshi Iga
a 120 T pulse magnet

Ibaraki University

埴

212

2 光子角度分解光電子分光によるη -Mo4O11 の非占有バンド構造の観測

木村

昭夫

広島大学

大学院理学研究 Observation of unoccupied band structure of η -Mo4O11 by
two-photon ARPES
科

Akio Kimura

Hiroshima University

213

〃

角田

一樹

広島大学

大学院理学研究
科〃

Kazuki Sumida

Hiroshima University

214

〃

檜垣

聡太

広島大学

大学院理学研究
科〃

Sota Higaki

Hiroshima University

木村

昭夫

広島大学

大学院理学研究
Time resolved ARPES of non-symmorphic TlCuZ (Z=S,Se)
科

Akio Kimura

Hiroshima University

吉川

智己

広島大学

大学院理学研究
科

Tomoki Yoshikawa

Hiroshima University

広島大学

放射光科学研究 Nonequilibrated surface carrier dynamics in magnetically
doped topological insulators
センター

Shiv Kumar

Hiroshima University

東京大学

大学院工学系研 Spin- and angle-resolved photoemission spectroscopy on novel
Masaki Kobayashi
spintronics materials
究科

The University of
Tokyo

215

非シンモルフィック空間群を持つ TlCuZ(Z=S,Se) 系の時間分解 ARPES

216

〃

217

磁性元素をドープしたトポロジカル絶縁体の非平衡表面キャリアダイナミクス

クマール
ヴ

218

新規スピントロニクス物質におけるスピン分解
角度分解光電子分光

小林

シ

正起

〃

ISSP Activity Report 2017

111

219 LaSnTe の 2 光子光電子分光

ワン シャオシャオ

広島大学

大学院理学研究Two photon photoemission of LaSnTe
科

Xiaoxiao Wang

Hiroshima University

220

〃

陳

広島大学

大学院理学研究
科

Chen Jiahua

Hiroshima University

221

スピン分解角度分解光電子分光による GdTe2 のCDW ギャップ内表面状態の研究

伊藤

孝寛

名古屋大学

シンクロトロン Spin-resolved angle-resolved photoemission study of surface
光研究センター states among CDW gap of GdTe2

Takahiro Ito

Nagoya University

222

〃

近谷

翔汰

名古屋大学

大学院工学研究
科

Shota Kontani

Nagoya University

223

トポロジカル半金属におけるスピン偏極した表面状態の観測

坂野

昌人

東京大学

大学院工学系研 Observation of spin-polarized surface states on topologicalsemimetals
究科

Masato Sakano

The University of
Tokyo

224

〃

三石

夏樹

東京大学

大学院工学系研
究科

Natsuki Mitsuishi

The University of
Tokyo

225

トポロジカル結晶薄膜のレーザー励起角度光電子分光による表面状態の観察

黒田

眞司

筑波大学

数理物質系

Observation of surface states of topological crystal thin films
using laser photoemission spectroscopy

Shinji Kuroda

University of Tsukuba

226

〃

大滝

祐輔

筑波大学

大学院数理物質科学研究科〃

Yusuke Otaki

University of Tsukuba

家華

〃

〃

〃

112
ISSP Activity Report 2017

No.

課題名

氏名

所属

227

〃

伊藤

寛史

筑波大学

大学院数理物質科学研究科

228

新奇超伝導体 RO1-xFxBiS2(R=La, Ce, Nd) のス
ピン角度分解光電子分光

奥田

太一

広島大学

229

〃

宮本

幸治

230

〃

Wu

231

高分解能スピン・角度分解光電子分光によるハーフメタル強磁性体 CoS2 の電子構造研究

232
233

Title

Organization

Hiroshi Ito

University of Tsukuba

放射光科学研究 Spin- and angle-resolved photoemission study of RO1-xFxBiS2(R=La, Ce, Nd)
センター

Taichi Okuda

Hiroshima University

広島大学

放射光科学研究センター〃

Koji Miyamoto

Hiroshima University

Shilong

広島大学

大学院理学研究
科〃

Wu Shilong

Hiroshima University

藤原

弘和

岡山大学

Study on electronic structures in half-metallic ferromagnet
大学院自然科学CoS2 by high-resolution spin- and angle-resolved
研究科
photoemission spectroscopy

Hirokazu Fujiwara

Okayama University

有機半導体分子の吸着に伴って生じるトポロジ
カル表面状態の変化

金井要

東京理科大学

理工学部

Kaname Kanai

Tokyo University of
Science〃水島啓貴

東京理科大学

大学院理工学研
究科

Hirotaka Mizushima

Tokyo University of
Science

234

GaPAsN 混晶のアップコンバージョン発光に関
する研究

矢口

裕之

埼玉大学

大学院理工学研
Upconversion luminescence from GaPAsN alloys
究科

Hiroyuki Yaguchi

Saitama University

235

〃

高宮

健吾

埼玉大学

総合技術支援センター〃

Kengo Takamiya

Saitama University

236

〃

高橋

渉

埼玉大学

大学院理工科研
究科〃

Takahashi Wataru

Saitama University

樋山

みやび

群馬大学

大学院理工学府 Elucidation of electronic structure for caged-luciferin

Miyabi Hiyama

Gunma University

担当所員：秋山

Modification of Topological surface states upon adsorption oforganic semiconductors〃

英文

237 ケージドルシフェリンの電子状態の解明
担当所員：小林

〃

Name

洋平

238

フェムト秒レーザー加工を用いた高 Q 値ナノ共振器のポストプロセス検討

高橋和

大阪府立大学

大学院工学研究 Postprocess for high-Q photonic crystal nanocavity using
ultrashort pulse laser
科

Yasushi Takahashi

Osaka Prefecture
University

239

〃

芦田

紘平

大阪府立大学

大学院工学研究
科

Kohei Ashida

Osaka Prefecture
University

240 次世代レーザーとレーザー加工の基礎技術研究

鳥塚健二

産業技術総合研 電子光技術研究 Basic research on next generation laser systems and laser
machining technology
究所部門

Kenji Torizuka

National Institute ofAdvanced Industrial
Science and Technology

241

黒田

隆之助

産業技術総合研
技術オープンイノベ
究所

Ryunosuke Kuroda

National Institute ofAdvanced Industrial
Science and Technology〃

先端オペランド計測

ーションラボラトリ

〃

〃

No.

課題名

氏名

所属

Title

242

〃

高田

英行

産業技術総合研 電子光技術研究
究所
部門

〃

Hideyuki Takada

National Institute ofAdvanced Industrial
Science and Technology

243

〃

吉富

大

産業技術総合研 電子光技術研究
究所
部門

〃

Dai Yoshitomi

National Institute ofAdvanced Industrial
Science and Technology244

超高速分光用ファイバーレーザーとパルス計測
機器の開発

末元

徹

豊田理化学研究
所

Tohru Suemoto

Toyota Physical andChemical ResearchInstitute担当所員：板谷

Development of fiber laser and pulse characterization
instrument for ultrafast optical spectroscopy

Name

Organization

治郎

245

希土類単酸化物薄膜における時間分解コヒーレ
ント反ストークスラマン散乱分光

牧野

哲征

福井大学

学術研究院工学 Time-resolved coherent anti-Stokes Raman scattering
spectroscopy in rare-earth monooxide thin films
系部門

Takayuki Makino

University of Fukui

246

〃

和座

一憲

福井大学

大学院工学研究
科

Kazunori Waza

University of Fukui

247

テラヘルツ分光装置を用いた酸化物磁性材料の
研究

大越

慎一

東京大学

大学院理学系研Study of magnetic oxide using terahertz spectroscopy
究科

Shinichi Ohkoshi

The University of
Tokyo

248

〃

生井

飛鳥

東京大学

大学院理学系研
究科〃

Asuka Namai

The University of
Tokyo

249

〃

吉清

まりえ

東京大学

大学院理学系研
究科〃

Marie Yoshikiyo

The University ofTokyo

Takashi Honda

High Energy
Acceleraor Research
Organization〃

大阪大学 先端強磁場科学研究センター / Center for Advanced High Magnetic Field Science Osaka University

ISSP Activity Report 2017250

キラル反強磁性体 Rb2Ni2(SO4)3 の多周波数 ESR
本田
測定

251 新規量子磁性体の強磁場磁性

山口

252 強磁場環境下におけるタンパク質結晶成長牧孝志

高エネルギー加 物質構造科学研
Multi-frequency ESR spectroscopy in chiral antiferromagnet
速器研究機構究所

博則

大阪府立大学

大学院理学系研
High-field magnetic properties of new quantum spin materials
究科

Hironori Yamaguchi

Osaka Prefecture
University

大阪大谷大学

薬学部

Syou Maki

Osaka Ohtani
University

祥

Crystal growth of protein under the magnetic field condition

113

253

一次元カゴメストリップ格子磁性体の強磁場磁
化過程

浅野

貴行

福井大学

学術研究院工学 High-Field Magnetization Process of 1D Kagome Strip LatticeCompound系部門

Takayuki Asano

University of Fukui

254

〃

横山

太紀

福井大学

大学院工学研究
科

Taiki Yokoyama

University of Fukui

255

フタロシアニン分子系の均一混晶における巨大
磁気抵抗の局在スピン効果

花咲

徳亮

大阪大学

大学院理学研究 Local moment effect on giant magnetoresistance inphthalocyanine mixed crystal
科

Noriaki Hanasaki

Osaka University

256

〃

石井

龍太

大阪大学

大学院理学研究
科

Ryutaro Ishii

Osaka university

〃

〃

114
ISSP Activity Report 2017

No.

課題名

氏名

所属

257

パルス強磁場を用いた強相関電子系物質の強磁場物性の研究

竹内

徹也

大阪大学

低温センター

258

〃

大貫

惇睦

琉球大学

理学部

259

反強磁性絶縁体 BaMn2Pn2 の高磁場における磁気輸送特性

Khuong Kim
東北大学
Huynh

260

Kitaev 相互作用の卓越した磁性体における電気
磁気結合

青山

拓也

261

〃

木村

262 高温超伝導体のパルス強磁場下電流電圧特性
263

Title
Physical properties of strongly correlated electron systems
under pulsed high magnetic field

Name

Organization

Tetsuya Takeuchi

Osaka University

Yoshichika Onuki

University of Ryukyus

材料科学高等研 Magnetotransport properties under high magnetic fields of
BaMn2Pn2 antiferromagnetic insulators
究所

Khuong Kim Huynh

Tohoku University

東北大学

大学院理学研究
Magnetoelectric effect in Kitaev magnets
科

Takuya Aoyama

Tohoku University

尚次郎

東北大学

金属材料研究所

Shojiro Kimura

Tohoku University

掛谷

一弘

京都大学

大学院工学研究 Current-voltage characteristics in high-Tc superconductors
under pulsed high magnetic fields
科

Itsuhiro Kakeya

Kyoto University

岡本

陸

京都大学

大学院工学研究
科

Riku Okamoto

Kyoto University

264 SmB6 薄膜の強磁場中での磁化 , ホール効果測定 宍戸寛明

大阪府立大学

大学院工学研究 Magnetization and Hall effect measurements for SmB6 thinfilms under high magnetic field科

Hiroaki Shishido

Osaka Prefecture
University

265 遷移金属含有炭素材料の磁性解明

本多

善太郎

埼玉大学

大学院理工学研 Magnetic properties of transition metal containing carbon
materials
究科

Zentaro Honda

Saitama University

〃

〃

〃

〃

266

新規な配位子構造を有するコバルト単核単分子
磁石の開発

福田

貴光

大阪大学

大学院理学研究 Development of single-cobalt-ion molecular magnets having
novel ligand structures
科

Takamitsu Fukuda

Osaka University

267

〃

石崎

聡晴

大阪大学

大学院理学研究科

Toshiharu Ishizaki

Osaka University268

ハニカム格子系 Li3Ni2SbO6 および Na3Co2SbO6
安井の磁場誘起相転移

幸夫

明治大学

理工学部

Yukio Yasui

Meiji University

269

ジャイロトロンを用いた高圧下多重極限 ESR 装置の開発と応用

櫻井

敬博

神戸大学

研究基盤センタ Development and application of high pressure multi-extreme
ESR system using gyrotronー

Takahiro Sakurai

Kobe University

270

鉄系超伝導体 Sr4V2O6Fe2As2 における超伝導異
中島
方性 II

正道

大阪大学

大学院理学研究 Anisotropy of superconductivity in iron-based superconductor
Masamichi Nakajima Osaka University
Sr4V2O6Fe2As2 II科

271

ディラック電子を有する新規反強磁性体における磁化特性の解明

酒井

英明

大阪大学

大学院理学研究 Measurements of high-field magnetisation for a novel magnet
hosting Dirac fermions
科

Hideaki Sakai

Osaka University

272 GaFeO3 におけるスピン波の非相反性

有馬

孝尚

東京大学

大学院新領域創Nonreciprocal spin waves in GaFeO3
成科学研究科Takahisa Arima

The University of
Tokyo

273

中川

直己

東京大学

大学院新領域創成科学研究科

Naoki Nakagawa

The University of
Tokyo

〃

〃
Magnetic field induced magnetic transitions of honeycomb
spin systems Li3Ni2SbO6 and Na3Co2SbO6

〃

No.

課題名

氏名

所属

274

〃

近江

毅志

東京大学

大学院新領域創成科学研究科275

パルス強磁場を用いたワイル半金属の量子輸送
特性の研究

村川

寛

大阪大学

276

〃

駒田

盛是

277

〃

横井

278

固有ジョセフソン接合テラヘルツ発振器の応用利用に関する研究

Title

Name

Organization〃

Tsuyoshi Omi

The University ofTokyo

大学院理学研究 Pulsed magnetic field studies of quantum transport propertiesof Weyl semimetals
科

Hiroshi Murakawa

Osaka university

大阪大学

大学院理学研究科〃Moriyoshi Komada

Osaka University

滉平

大阪大学

大学院理学研究
科〃

Yokoi Kohei

Osaka University

柏木

隆成

筑波大学

数理物質系

Takanari Kashiwagi

University of Tsukuba

単結晶 Ax(NH3)yFeSe 超伝導体 (A = アルカリ金
279 属、アルカリ土類金属）の強磁場下における超 神戸
伝導物性

高志

岡山大学

大学院自然科学 Superconducting properties of single-crystal Ax(NH3)yFeSe
under high magnetic field
研究科

Takashi Kambe

Okayama University

280

多重極限環境下の電子スピン共鳴計測に用いる
高出力ミリ波・サブミリ波伝送系の開発研究

光藤

誠太郎

福井大学

Development of high-power millimeter and submillimeter wave
遠赤外領域開発
transmission system for electron spin resonance measurement Seitaro Mitsudo
研究センターunder multiple extreme environment

University of Fukui

281

〃

藤井

裕

福井大学

遠赤外領域開発
研究センターYutaka Fujii

University of Fukui

木村

健太

大阪大学

大学院基礎工学 High-field ESR measurements of square-cupola-based
antiferromagnets
研究科

Kenta Kimura

Osaka University
Nagoya University

282 正四角台塔型反強磁性体の強磁場中 ESR 測定

Study of application use of intrinsic Josephson junction THz
emitters〃

ISSP Activity Report 2017283

スピン液体候補物質 Ba3ZnRu2O9 の希薄磁性不
純物効果

寺崎

一郎

名古屋大学

大学院理学研究 Effects of dilute magnetic impurity on the spin-liquid candidate
Ichiro Terasaki
Ba3ZnRu2O9
科

284

〃

山本

貴史

名古屋大学

大学院理学研究
科

大久保

晋

神戸大学

分子フォトサイDevelopment of InSb detector for use under ultra high
エンス研究セン
magnetic fieldター

Susumu Okubo

Kobe University

敏孝

福井大学

遠赤外領域開発 Study on high frequency ESR spectroscopy using high powerTHz radiation sourses - Gyrotrons
研究センター

Toshitaka Idehara

University of Fukui

勇

福井大学

遠赤外領域開発
研究センターIsamu Ogawa

University of Fukui

英樹

上智大学

理工学部

Hideki Kuwahara

Sophia University

野田

正亮

上智大学

大学院理工学研
究科

Masaaki Noda

Sophia University

南部

雄亮

東北大学

金属材料研究所

Yusuke Nambu

Tohoku University

285 超強磁場下で用いる InSb 検出器の開発
286
287
288
289

高出力テラヘルツ光源 ( ジャイロトロン ) を光源出原とする 高周波 ESR 分光 の研究〃

小川

Sr2MnSi2O7 単結晶試料の強磁場下での磁化・電桑原
気分極・ESR 測定〃

115

290 三角格子反強磁性体 NiGa2S4 の強磁場相の研究〃〃
Magnetization, electric polarization, and ESR measurements
for Sr2MnSi2O7 single crystals in pulsed high magnetic fields.
〃
Study of high magnetic field phase in the triangularantiferromagnet NiGa2S4

Takafumi Yamamoto Nagoya University

116

No.
291

課題名
単軸性キラル磁性体の磁気特性測定
クと磁気共鳴測定−

氏名
−磁気トル

ISSP Activity Report 2017

292

〃

293

パルス磁場を用いたマルテンサイト変態のカイ
ネティクスに関する研究

所属

Title

Name

Organization

大阪府立大学

Yoshihiko Togawa

Osaka Prefecture
University

フランシスコゴンカルベ
ス

Magnetic property of monoaxial chiral magnetic materials
大学院工学研究examined by means of magnetic torque and resonance科
measurements

大阪府立大学

大学院工学研究
科Francisco Goncalves

Osaka Prefecture
University

福田

大阪大学

大学院工学研究 A study on kinetics of martensitic transformations using pulsed
Takashi Fukuda
magnetic field
科

戸川

欣彦

隆

〃

Osaka University

物質合成・評価設備 P クラス / Materials Synthesis and Characterization P Class Researcher
No.

課題名

氏名

所属

1

幾何学的フラストレート系物質の単結晶育成と新奇物性の研究松平和之

九州工業大学

大学院工学研究 Single crystal growth and study of novel phenomena ofgeometrically frustrated materials
院

Kazuyuki Matsuhira

Kyushu Institute ofTechnology

2

〃

谷口

智哉

九州工業大学

大学院工学府Tomoya Taniguchi

Kyushu Institute ofTechnology

3電子が複合自由度を持つ遷移金属カルコゲナイ
ドの合成と物性評価

片山

尚幸

名古屋大学

大学院工学研究 Growth of the transition metal chalcogenides with charge,
orbital and spin degrees of freedom科

Naoyuki Katayama

Nagoya University

4

〃

田村

慎也

名古屋大学

大学院工学研究
科

Shinya Tamura

Nagoya University

Title

〃

〃

Name

Organization

物質合成・評価設備 G クラス / Materials Synthesis and Characterization G Class Researcher
No.

課題名

氏名

所属

1

鉄系超伝導体及び銅酸化物高温超伝導体におけるエックス線回折測定

芝内

孝禎

東京大学

大学院新領域創 X-ray diffraction measurements on iron-based superconductors
Takasada Shibauchi
and cuprate superconductors
成科学研究科The University of
Tokyo

2

〃

水上

雄太

東京大学

大学院新領域創成科学研究科〃Yuta Mizukami

The University of
Tokyo

3

〃

竹中

崇了

東京大学

大学院新領域創成科学研究科〃

Takaaki Takenaka

The University of
Tokyo

4

〃

石田

浩祐

東京大学

大学院新領域創成科学研究科〃

Kousuke Ishida

The University of
Tokyo

5

〃

田中

桜平

東京大学

大学院新領域創成科学研究科〃

Ohei Tanaka

The University of
Tokyo

6

〃

細井

優

東京大学

大学院新領域創成科学研究科〃Suguru Hosoi

The University of
Tokyo

Title

Name

Organization

No.

課題名

氏名

所属

7

〃

杉村

優一

東京大学

大学院新領域創成科学研究科8

高温高圧水中の固体酸・塩基触媒反応の速度論
的解析

大島

義人

東京大学

9

〃

秋月

信

10

高温高圧水の固体触媒表面性質への影響の評価

大島

11

〃

Title

Name

Organization

Yuichi Sugimura

The University ofTokyo

大学院新領域創 Kinetic analysis of solid acid and base catalyzed reactions in
sub- and supercritical water
成科学研究科Yoshito Oshima

The University of
Tokyo

東京大学

大学院新領域創成科学研究科

Makoto Akizuki

The University of
Tokyo

義人

東京大学

大学院新領域創 Evaluating influence of high temperature and pressure water
on solid catalyst surface
成科学研究科Yoshito Oshima

The University of
Tokyo

高橋

侑佳

東京大学

大学院新領域創成科学研究科Yuka Takahashi

The University ofTokyo

Haruka Taniguchi

Iwate University

〃

〃

〃

12

単結晶マンガン酸化物の誘電特性の研究

谷口

晴香

岩手大学

理工学部

13

高圧高温水を反応場とした有機合成反応

大島

義人

東京大学

大学院新領域創Organic synthesis in sub- and supercritical water
成科学研究科Yoshito Oshima

The University ofTokyo

Koki Ito

The University ofTokyo

Study of dielectric properties of single-crystalline manganite

ISSP Activity Report 2017

117

14

〃

伊藤

光基

東京大学

大学院新領域創成科学研究科15

Fe2Al5 の単結晶構造解析

木村

薫

東京大学

大学院新領域創Single Crystal Structure Analysis of Fe2Al5
成科学研究科

Kaoru Kimura

The University of
Tokyo

16

〃

飛田

一樹

東京大学

大学院新領域創成科学研究科

Kazuki Tobita

The University of
Tokyo

17

オスミウム含有廃液の超臨界水酸化・超臨界二酸化炭素抽出に関する研究

布浦

鉄兵

東京大学

環境安全研究セ Study on supercritical water oxidation and supercritical CO2
extraction of osmium-containing wastewater
ンター

Teppei Nunoura

The University of
Tokyo

18

〃

三好

列

東京大学

大学院新領域創成科学研究科〃Retsu Miyoshi

The University of
Tokyo

19

〃

平井

晴菜

東京大学

大学院新領域創成科学研究科〃Haruna Hirai

The University of
Tokyo

20

プロトン伝導性固体電解質を用いた電解合成反応における電極触媒開発と速度論的解析

大友

順一郎

東京大学

大学院新領域創 Development of electrode catalysts and kinetic analysis forelectrosynthesis using a proton conducting solid electrolyte
成科学研究科

Junichiro Otomo

The University of
Tokyo

21

〃

高坂

文彦

東京大学

大学院新領域創成科学研究科

Fumihiko Kosaka

The University of
Tokyo

22

プロトン伝導型 SOFC の新規セルデザインおよ
び性能評価

大友

順一郎

東京大学

大学院新領域創 Performance evaluation and new cell design of proton
conducting SOFC
成科学研究科

Junichiro Otomo

The University of
Tokyo

23

〃

橋本

隼輔

東京大学

大学院新領域創成科学研究科Shunsuke Hashimoto

The University of
Tokyo

〃

〃

〃

〃

118

No.
24

課題名
新規プロトン - 電子混合伝導体の開発

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

大友

順一郎

東京大学

大学院新領域創
Development of mixed proton-electron mixed conductors
成科学研究科

Junichiro Otomo

The University ofTokyo

Gen Kojo

The University of
Tokyo

25

〃

小城

元

東京大学

大学院新領域創成科学研究科26

ケミカルループ燃焼法における酸素キャリアの反応モデリング

大友

順一郎

東京大学

大学院新領域創 Reaction modeling in chemical looping systems with new
oxygen carrier materials.
成科学研究科

Junichiro Otomo

The University of
Tokyo

27

〃

松原

一起

東京大学

大学院新領域創成科学研究科

Kazuki Matsubara

The University of
Tokyo

順一郎

東京大学

大学院新領域創Research on solid electrolyte (glass-ceramics) for Li battery
成科学研究科

Junichiro Otomo

The University of
Tokyo

東京大学

大学院新領域創成科学研究科Lu Shutong

The University of
Tokyo

28

全固体 Li 電池用電解質（ガラスーセラミックス）
大友
の研究

疎桐

〃

〃

29

〃

陸

30

アンモニア電解合成反応における新規電極触媒
開発と電極反応評価

大友

順一郎

東京大学

大学院新領域創 Development of new electro-catalysts and evaluation ofelectrode reaction for electrochemical synthesis of ammonia
成科学研究科

Junichiro Otomo

The University of
Tokyo

31

〃

及川

暁雄

東京大学

大学院新領域創成科学研究科Akio Oikawa

The University of
Tokyo

32

ケミカルループ法における高活性かつ長期安定性に長けた酸素キャリア材料の開発

大友

順一郎

東京大学

大学院新領域創 Development of oxygen carrier materials with high activity
and high durability for chemical looping systems.
成科学研究科

Junichiro Otomo

The University of
Tokyo

33

〃

岡

東京大学

大学院新領域創成科学研究科

Hikaru Oka

The University of
Tokyo

34

二酸化炭素と窒素による水素キャリアの電気化
学的合成

大友

東京大学

大学院新領域創 Electrochemical Reduction of Nitrogen and Carbon Dioxide toJunichiro Otomo
Hydrogen Carriers under Low Temperature
成科学研究科The University of
Tokyo

35

〃

李

東京大学

大学院新領域創成科学研究科Li Chieni

The University of
Tokyo

36

ケミカルループ法における高性能酸素キャリア
材料の開発

大友

東京大学

大学院新領域創 Development of oxygen carrier materials with high activity
and durability for chemical looping systems
成科学研究科

Junichiro Otomo

The University of
Tokyo

37

〃

東京大学

大学院新領域創成科学研究科Martin Keller

The University of
Tokyo

38

ぺロブスカイト型酸化物を用いたケミカルルー
ピングシステムの開発

東京大学

大学院新領域創 Preparation of perovskite oxides as supports for MeO (Me: Cu,
Junichiro OtomoNi) oxygen carrier materials for chemical looping systems
成科学研究科The University of
Tokyo

39

〃

オーチェン
ジェームズ
オーチェン

東京大学

大学院新領域創成科学研究科

Ochieng James
Ochieng

The University of
Tokyo

40

六方晶フェライト単結晶の化学分析と構造解析

植田

京都大学

大学院理学研究 Chemical analysis and structural analysis of single crystals ofhexagonal ferrites
科

Hiroaki Ueda

Kyoto University

輝
順一郎
建毅
順一郎

マーチン
ラー
大友

ケ

順一郎

浩明

〃

〃

〃

〃

〃

〃

ISSP Activity Report 2017

No.

課題名

41

〃

増田

順一

京都大学

大学院理学研究
科

Junichi Masuda

Kyoto University

42

超臨界水熱合成法を利用した金属酸化物微粒子の in situ 有機修飾技術の開発

大島

義人

東京大学

Development of in-situ organic surface modification technology
大学院新領域創on metal oxide nanoparticles using supercritical hydrothermal Yoshito Oshima
成科学研究科
synthesis

The University of
Tokyo

43

〃

原田

拓真

東京大学

大学院新領域創成科学研究科

Takuma Harada

The University of
Tokyo

44

超臨界水を利用した微粒子合成におけるアルカ
リ金属種の影響

大島

義人

東京大学

大学院新領域創 Effect of alkali metal species for nanoparticle synthesis insupercritical water.
成科学研究科Yoshito Oshima

The University of
Tokyo

45

〃

織田

耕彦

東京大学

大学院新領域創成科学研究科

Orita Yasuhiko

The University of
Tokyo

46

中温域でのアンモニア電解合成における新規電極触媒開発と反応メカニズムの解析

大友

順一郎

東京大学

Development of new electrochemical catalyst for ammonia
大学院新領域創electrolysis and evaluation of reaction mechanism at
成科学研究科intermediate temperature.

Junichiro Otomo

The University of
Tokyo

47

〃

長谷川

東京大学

大学院新領域創成科学研究科

Takuto Hasegawa

The University of
Tokyo

48

高温高圧水中のシクロヘキシン水和反応におけるゼオライトの安定性評価

大島

東京大学

大学院新領域創 Stability of zeolites in hot compressed water of cyclohexene
hydration
成科学研究科Yoshito Oshima

The University of
Tokyo

49

〃

アピバンボリラク チャンウィット

東京大学

大学院新領域創成科学研究科Apibanboriak
Chanwit

The University of
Tokyo

50

中温作動プロトン伝導型固体酸化物燃料電池の新規セル設計

大友

順一郎

東京大学

大学院新領域創 New Cell Design of Intermediate Temperature Proton
Conducting SOFC
成科学研究科

Junichiro Otomo

The University of
Tokyo

51

〃

田所

洸

東京大学

大学院新領域創成科学研究科

Hiroshi Tadokoro

The University of
Tokyo

岳彦

東京大学

大学院新領域創 Characterization for metal catalysts supported on mesoporous
materials and graphene oxides
成科学研究科

Takehiko Sasaki

The University of
Tokyo

52

氏名

卓利

メソポーラスマテリアル・グラフェンオキサイド佐々木に担持した金属触媒のキャラクタリゼーション

義人

所属

Title
〃

〃

〃

〃

〃

〃

Name

Organization

53〃

Etty Nurlia
Kusumawati

東京大学

大学院理学系研
究科〃

Etty Nurlia
Kusumawati

The University of
Tokyo

54

〃

有村

祐紀

東京大学

大学院新領域創成科学研究科〃Yuki Arimura

The University of
Tokyo

119

55

新規負熱膨張材料の合成と物性

岡本

佳比古

名古屋大学

大学院工学研究 Synthesis and physical properties of novel negative thermal
expansion materials
科

Yoshihiko Okamoto

Nagoya University

56

腫瘍抗原候補ペプチドのラマン分光測定

糸井

充穂

日本大学

医学部

Miho Itoi

Nihon University

57

触媒反応の insitu ラマン散乱測定

佐々木

東京大学

大学院新領域創 in situ measurement of Raman scattering for heterogeneous
catalytic reactions
成科学研究科

Takehiko Sasaki

The University of
Tokyo

岳彦

Raman spectroscopy of neoantigen peptides

120
ISSP Activity Report 2017

No.

課題名

氏名

58

〃

有村

祐紀

東京大学

大学院新領域創成科学研究科59

フラストレート系化合物 RZn3P3(R= 希土類 ) の高圧合成と磁気特性

関根

ちひろ

室蘭工業大学

60

〃

森

英将

所属

Title

Name

Organization〃

Yuki Arimura

The University ofTokyo

大学院工学研究 High-pressure synthesis and magnetic properties of frustrated
compounds RZn3P3 (R=rare earth)科

Chihiro Sekine

Muroran Institute ofTechnology

室蘭工業大学

大学院工学研究
科

Hidemasa Mori

Muroran Institute ofTechnology
The University of
Tokyo

〃

61

アミノ酸の高圧下でのペプチド化反応の観察

藤本

千賀子

東京大学

大学院理学系研
Peptide formation of amino acids under high pressure
究科

Chikako Fujimoto

62

層状バナジウム酸水素化物における圧力効果

山本

隆文

京都大学

大学院工学研究
Pressure Effect on Layered Vanadium Oxyhydrides
科

Takafumi Yamamoto Kyoto University

63

新規 14 族元素窒化物の高圧合成および安定性

丹羽

健

名古屋大学

大学院工学研究 High pressure synthesis and stability of group 14 element
nitrides科

Ken Niwa

Nagoya University64

高圧印加による Li ドープα菱面体晶ボロンの作
製

木村

薫

東京大学

大学院新領域創 Synthesis of Li-dope alpha-rhombohedral boron by highpressurization
成科学研究科

Kaoru Kimura

The University of
Tokyo

65

〃

酒井

志徳

東京大学

大学院新領域創成科学研究科

Munenori Sakai

The University of
Tokyo

木村

薫

東京大学

大学院新領域創 High pressure synthesis of MoSi2 type iron aluminide, FeAl2
crystal
成科学研究科

Kaoru Kimura

The University of
Tokyo

66

高圧下での MoSi2 型構造の FeAl2 結晶の作製

〃

67

〃

飛田

一樹

東京大学

大学院新領域創成科学研究科〃

Kazuki Tobita

The University of
Tokyo

68

〃

岩崎

祐昂

東京大学

大学院新領域創成科学研究科〃Yutaka Iwasaki

The University of
Tokyo

69

プラズマ風洞による宇宙往還機の熱防護システ
ム (TPS) に関する動的酸化に関する研究

桃沢愛

東京都市大学

工学部

Research on dynamic oxidation of thermal protection system
by using plasma wind tunnel

Ai Momozawa

Tokyo City University

70

〃

曽我

遼太

東京大学

大学院工学系研
究科〃

Ryota Soga

The University of
Tokyo

71

〃

田中

聖也

東京大学

大学院工学系研
究科〃

Seiya Tanaka

The University of
Tokyo

真理子

山口大学

大学院創成科学 Evaluation of micro-texture and crystallinity of naturalminerals
研究科

Mariko Nagashima

Yamaguchi University

産業技術総合研 化学プロセス研 Continuous synthesis of functional metal oxide nanoparticles
using a micromxer
究所
究部門

Kiwamu Sue

National Institute ofAdvanced Industrial
Science and Technology

千葉工業大学

Tetsuji Saito

Chiba Institute ofTechnology

72

天然鉱物の微細組織と結晶性の実態

永嶌

73

マイクロミキサを用いた機能性酸化物ナノ粒子
の連続合成

陶

74

新しい希土類磁石の探求

齋藤

究
哲治

工学部

Research of new rare-earth magnets

No.

課題名

氏名

所属

75

フィチン酸の超臨界水ガス化挙動に関する検討

布浦

鉄兵

東京大学

環境安全研究セ Decomposition behavior of phytic acid in supercritical watergasification
ンター

Teppei Nunoura

The University of
Tokyo

76

〃

飯田

裕樹

東京大学

大学院新領域創成科学研究科Yuuki Iida

The University of
Tokyo

Title

〃

Name

Organization

77

水中プラズマを用いたナノ粒子合成

後藤

拓

東京大学

大学院新領域創
Synthesis of nanoparticles via plasma processing in liquid
成科学研究科Taku Goto

The University of
Tokyo

78

高温高圧下で軽元素が鉄ーシリケイトー水系に及ぼす影響の解明

飯塚

理子

東京大学

大学院理学系研 Behavior of light elements in iron-silicate-water system underhigh pressure and high temperature
究科

Riko Iizuka

The University of
Tokyo

79

〃

高橋

修也

東京大学

大学院理学系研
究科〃

Shuya Takahashi

The University of
Tokyo

80

〃

福山

鴻

東京大学

大学院理学系研
究科〃

Ko Fukuyama

The University of
Tokyo

81

〃

古村

俊行

東京大学

大学院理学系研
究科〃

Toshiyuki Komura

The University of
Tokyo

82

スピングラス転移温度を決定する物理的要因の
研究

香取

浩子

東京農工大学

大学院工学研究 Study of physical factors that determine the spin-glasstransition temperature
院

Hiroko Katori

Tokyo Universityof Agriculture andTechnology

83

〃

柿本

和勇

東京農工大学

大学院工学府Kazuo Kakimoto

Tokyo Universityof Agriculture andTechnology

博

横浜国立大学

大学院工学研究 Magnetism and thermoelectric properties at high temperaturein A1-xSrxFeO3(A : lanthanoid)院

Hiroshi Nakatsugawa

Yokohama National
University〃

ISSP Activity Report 2017

121

84

A1-xSrxFeO3 (A : ランタノイド ) の高温における中津川
磁性と熱電特性に関する研究

85

三角格子をもつ遷移金属カルコゲナイドの物性

小林

慎太郎

名古屋大学

大学院工学研究 Physical properties of transition metal chalcogenides with atriangular lattice
科

Shintaro Kobayashi

Nagoya University

86

〃

中埜

彰俊

名古屋大学

大学院工学研究科〃

Akitoshi Nakano

Nagoya University

87

〃

鬼頭

俊介

名古屋大学

大学院工学研究
科〃

Shunsuske Kitou

Nagoya University

88

レアメタルフリー磁性材料 L10-FeCo の磁気特
性の解析

小嗣

真人

東京理科大学

基礎工学部

Masato Kotsugi

Tokyo University of
Science

89

〃

落合 順也

東京理科大学

大学院基礎工学研究科〃

Junya Ochiai

Tokyo University of
Science90

酸フッ化物層状ペロブスカイト Pb3Fe2O5F2 の磁場依存磁気転移の観察

岡

中央大学

理工学部

Observation of the filed dependence of magnetic transition inlayered perovskite oxyfluride Pb3Fe2O5F2

Kengo Oka

Chuo University

91

正 20 面体クラスター固体の伝導と磁性

木村

東京大学

大学院新領域創 Transport and magnetic properties of Icosahedral Cluster
Solids
成科学研究科

Kaoru Kimura

The University of
Tokyo

研吾
薫

Analysis of magnetic properties of rare-metal-free supermagnet “L10-FeCo”

122

No.

課題名

92

〃

氏名

所属

廣戸

孝信

東京大学

大学院新領域創成科学研究科

Title
〃

Name

Organization

ISSP Activity Report 2017

Takanobu Hiroto

The University ofTokyo

Asuka Ishikawa

Tokyo University of
Science93

準結晶・近似結晶の磁性に関する研究

石川

明日香

東京理科大学

大学院基礎工学
Magnetism of quasicrystals and approximants
研究科

94

ハーフメタル型ホイスラー合金の磁性と輸送特性に関する研究

重田

出

鹿児島大学

大学院理工学研 Study on the magnetic and transport properties of half-metallic
Iduru Shigeta
Heusler alloys
究科

Kagoshima University

95

〃

大岡

隆太郎

鹿児島大学

大学院理工学研
究科

Ryutaro Ooka

Kagoshima University

政彦

鹿児島大学

大学院理工学研 Study on the magnetic and electrical properties of Heusler
compounds
究科

Masahiko Hiroi

Kagoshima University

名古屋大学

大学院工学研究 Magnetic and transport properties of Cu doped excitonic phase
Hiroshi Sawa
candidate substance 1T-TiSe2
科

Nagoya University〃

96

ホイスラー型化合物の磁性と伝導の研究

廣井

97

励起子相候補物質 1T-TiSe2 への Cu ドープにおける磁気・輸送特性の評価

澤

98

〃

小林

慎太郎

名古屋大学

大学院工学研究
科〃

Shintaro Kobayashi

Nagoya University

99

〃

鬼頭

俊介

名古屋大学

大学院工学研究
科〃

Shunsuske Kitou

Nagoya University

100

キャリアドープされたパイロクロア型イリジウ
ム酸化物の純良単結晶育成

松平和之

九州工業大学

大学院工学研究
Single crystal growth of carrier-doped pyrochlore iridates
院

Kazuyuki Matsuhira

Kyushu Institute ofTechnology

101

〃

柴原

怜央

九州工業大学

大学院工学府Reo Shibahara

Kyushu Institute ofTechnology

102 リチウムイオン伝導体 Li3xB1-xPO4 の高圧相転移 廣瀬

瑛一

名古屋大学

大学院工学研究 High pressure phase transition of lithium ion conductor
Li3xB1-xPO4科

Eiichi Hirose

Nagoya University

103 金属および半金属薄膜の作成

末元

徹

豊田理化学研究所

Preparation of metal and semimetal thin films

Tohru Suemoto

Toyota Physical andChemical ResearchInstitute

博

〃

104

高周波磁気共鳴を有する希土類オルソフェライ
ト単結晶の生成とテラヘルツ波磁気分光

中嶋

誠

大阪大学

レーザー科学研 Terahertz spin spectroscopy for rare-earth orthoferrite single
crystal with high frequency magnetic resonance
究所

Makoto Nakajima

Osaka University

105

〃

加藤

康作

大阪大学

レーザー科学研究所〃

Kosaku Kato

Osaka University

106

〃

邱

大阪大学

レーザー科学研
究所〃

Hongsong Qiu

Osaka University

107

〃

弘田

和將

大阪大学

レーザー科学研
究所〃

Kazumasa Hirota

Osaka University

剛

東京大学

大学院新領域創 Understanding of coupled multiferroic domains in a conicalspiral magnet CoCr2O4
成科学研究科Tsuyoshi Kimura

The University of
Tokyo

108

コニカルらせん磁性体 CoCr2O4 における複合ド木村
メイン相関の解明

紅松

No.

課題名

氏名

所属

109 新規フェロイック物質の開発

有馬

孝尚

東京大学

大学院新領域創
Exploration of new ferroics
成科学研究科

110

〃

徳永

祐介

東京大学

大学院新領域創成科学研究科

111

〃

阿部

伸行

東京大学

112

〃

松浦

慧介

鷲見

113

Title

Name

Organization

Takahisa Arima

The University of
Tokyo

〃

Yusuke Tokunaga

The University ofTokyo

大学院新領域創成科学研究科〃Nobuyuki Abe

The University of
Tokyo

東京大学

大学院新領域創成科学研究科〃

Keisuke Matsuura

The University of
Tokyo

浩樹

東京大学

大学院新領域創成科学研究科

Hiroki Sumi

The University of
Tokyo

ISSP Activity Report 2017

114

〃

藤間

友理

東京大学

大学院新領域創成科学研究科〃Yuri Fujima

The University of
Tokyo

115

〃

徳村

謙祐

東京大学

大学院新領域創成科学研究科〃Kensuke Tokumura

The University of
Tokyo

116

〃

中川

直己

東京大学

大学院新領域創成科学研究科〃

Naoki Nakagawa

The University of
Tokyo

117

〃

荒木

勇介

東京大学

大学院新領域創成科学研究科〃

Yusuke Araki

The University of
Tokyo

118

〃

近江

毅志

東京大学

大学院新領域創成科学研究科〃Tsuyoshi Omi

The University of
Tokyo

119

〃

小池

仁希

東京大学

大学院新領域創成科学研究科〃Yoshiki Koike

The University of
Tokyo

120

〃

吉澤

孟晃

東京大学

大学院新領域創成科学研究科〃

Takeaki Yoshizawa

The University of
Tokyo

121

〃

佐藤

樹

東京大学

大学院新領域創成科学研究科〃Tatsuki SatoThe University of
Tokyo

122

〃

海本

祐真

東京大学

大学院新領域創成科学研究科〃Yuma Umimoto

The University of
Tokyo

123

鉄ニクタイド及び鉄カルコゲナイドにおける新
規物性探索

水上

雄太

東京大学

大学院新領域創 Investigation of physical properties in iron pnictides andchalcogenides
成科学研究科Yuta Mizukami

The University of
Tokyo

123

No.

課題名

氏名

所属

124

Title

Name

Organization

Title

Name

Organization

物質合成・評価設備 U クラス / Materials Synthesis and Characterization U Class Researcher
No.

ISSP Activity Report 2017

1課題名
溶融亜鉛メッキ合金相の応力誘起変態

氏名

所属

山口

周

東京大学

大学院工学系研 Stress-induced phase transformation of Fe-Zn alloy formed in
hot-dip process
究科

Shu Yamaguchi

The University ofTokyo

Kazuhiko Tanaka

The University of
Tokyo

2

〃

田中

和彦

東京大学

大学院工学系研
究科

3

超高圧プレスを用いた新規プロトニクス酸化物のソフト化学的合成法の検討

山口

周

東京大学

大学院工学系研 Oxide-Protonics materials synthesis by combined use of soft
chemical method and high pressure
究科

Shu Yamaguchi

The University of
Tokyo

4

〃

田中

和彦

東京大学

大学院工学系研
究科

Kazuhiko Tanaka

The University of
Tokyo

5

遷移金属パイロクロア酸化物超伝導体の結晶相
決定

山浦

淳一

東京工業大学

元素戦略研究セ Determination of crystalline state in transition metal
pyrochlore oxide superconductor
ンター

Junichi Yamaura

Tokyo Institute ofTechnology

6フィチン酸の超臨界水ガス化におけるリンの挙動に関する検討

布浦

鉄兵

東京大学

環境安全研究セ Behavior of phosphorus in supercritical water gasification
using phytic acid
ンター

Teppei Nunoura

The University of
Tokyo

7

〃

飯田

裕樹

東京大学

大学院新領域創成科学研究科Yuuki Iida

The University of
Tokyo

東京大学

大学院総合文化 Large crystal growth of itinerant helical magnet MnP by means
Yoshinori Onoseof Bidgman method
研究科

The University of
Tokyo

東京大学

大学院総合文化研究科

Jiang NanThe University of
Tokyo

Noritaka Sakakibara

The University ofTokyo

Hirofumi Nema

Nihon University

8

ブリッジマン法による遍歴らせん磁性体 MnP の小野瀬
大型単結晶育成

佳文

男

〃

〃

〃

9

〃

蒋

10

氷共存型プラズマを用いた新規アクアプロセス
開拓

榊原

教貴

東京大学

大学院新領域創 Development of a novel aqua-process with plasma-ice
coexistence system
成科学研究科11

テラヘルツ近接場顕微計測用の二酸化バナジウ
ム単結晶の作製

根間

裕史

日本大学

文理学部

12

新規鉄系超伝導体の物質合成と物性評価

芝内

孝禎

東京大学

大学院新領域創 Synthesis and measurements of physical properties on newiron-based superconductors
成科学研究科Takasada Shibauchi

The University of
Tokyo

〃

Synthesis of single-crystal VO2 for THz near-field optical
microscopy

13

〃

竹中

崇了

東京大学

大学院新領域創成科学研究科〃

Takaaki Takenaka

The University of
Tokyo

14

〃

細井

優

東京大学

大学院新領域創成科学研究科〃Suguru Hosoi

The University of
Tokyo

15

〃

石田

浩祐

東京大学

大学院新領域創成科学研究科〃

Kousuke Ishida

The University of
Tokyo

16

〃

杉村

優一

東京大学

大学院新領域創成科学研究科〃Yuichi Sugimura

The University of
Tokyo

No.

課題名

17

〃

18

氏名

所属

Title

Name

Organization

〃

田中

桜平

東京大学

大学院新領域創成科学研究科

Ohei Tanaka

The University ofTokyo

遍歴電子強磁性体 X2Co12As7 (X= 希土類等 ) の太田
磁気的性質の研究

寛人

東京農工大学

大学院工学研究 Study of magnetic property of itinerant electronic ferromagnets
Hiroto Ohta
X2Co12As7 (X = lanthanoids and other elements)
院

Tokyo Universityof Agriculture andTechnology

大学院工学府Yusuke Kato

Tokyo Universityof Agriculture andTechnology

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

19

〃

加藤

優典

東京農工大学20

金属有機構造体のナノ構造制御によるカーボン
材料合成

細野

英司

産業技術総合研 省エネルギー研 Synthesis of carbon materials by nanostructure control ofmetal organic frameworks
究所
究部門

21

微量希土類元素を含む鉄、ケイ酸塩ガラス試料
の高圧合成

桑原

秀治

愛媛大学

地球深部ダイナHigh pressure synthesis of rare earth elements doped iron and
Hideharu Kuwahara
ミクス研究セン
silicate glass
ター

Ehime University

22

天然由来炭酸塩の定量分析

樋山

みやび

群馬大学

大学院理工学府 Quantitative analysis of naturally derived carbonate

Miyabi Hiyama

Gunma University

23

オレイン酸被覆水熱成長法によるセリアナノ粒
子の鉄イオンドープによる形態変化

牧之瀬

島根大学

大学院総合理工 Study of shape changing of Fe doepd ceria nanoparticles
synthesized by oleate-modified hydrothermal method
学研究科

Yuki Makinose

Shimane University

佑旗〃

ISSP Activity Report 2017

125

126

平成 29 年度 中性子科学研究施設
No.

課題名

共同利用課題一覧 / Joint Research List of Neutron Scattering Researcher 2017

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

・ 申請装置 4G: GPTAS
1GPTAS（汎用 3 軸中性子分光器）IRT 課題

佐藤

卓

東北大学

多元物質科学研
IRT project of GPTAS
究所

Taku J Sato

Tohoku University2

磁性準結晶中の隠れた磁気秩序の探索

佐藤

卓

東北大学

多元物質科学研
Hidden magnetic order in magnetic quasicrystals
究所

Taku J Sato

Tohoku University

3

近藤籠目格子 CeRhSn の量子臨界磁気揺動

佐藤

卓

東北大学

多元物質科学研 Detecting quantum critical fluctuations in the disorderedkagome Kondo compound CeRhSn
究所

Taku J Sato

Tohoku University

4

時間分割中性子散乱による磁気構造変化過程の
実時間追跡

元屋

清一郎

東京理科大学

理工学部学科

5

六方晶フェライト Ba2Zn2Fe12O22 およびBaFe12O19 系の超交換相互作用

内海重宜

諏訪東京理科大 工学部
学学科

6

強磁性超伝導体における磁性と超伝導の研究

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

A study of magnetic state in ferromagnetic superconductors

Hazuki Furukawa

Ochanomizu
University

7

Sr2Ruo4 の非弾性散乱

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Inelastic neutron scattering experiments on Sr2RuO4

Hazuki Furukawa

Ochanomizu
University

8

トポロジカル超伝導体の非弾性散乱

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Inelastic neutron scattering experiments on topologicalsuperconductors

Hazuki Furukawa

Ochanomizu
University9

多段メタ磁性転移を示す空間反転対称性の破れた CePdSi3 における磁気構造の決定

吉田

雅洋

東京大学

物性研究所

Determination of the magnetic structure of theNoncentrosymmetric Metamagnet CePdSi3

Masahiro Yoshida

The University of
Tokyo

10

S=1/2 ジグザグ鎖磁性体 Ba2ReO5 におけるスピ
那波
ン励起

和宏

東北大学

多元物質科学研
Spin excitations on the S = 1/2 zigzag chain magnet Ba2ReO5
究所

Kazuhiro Nawa

Tohoku University11

強誘電体の相転移機構（変位型及び秩序−無秩序重松型）に関する統一的理解の確立

宏武

山口大学

教育学部

12

スピンアイスにおけるトポロジカル相転移広明

首都大学東京理工学研究科物
Topological phase transition in spin ice
理学専攻

13

パイロクロア磁性体 Tb2Zr2O7 の磁気ダイナミク
高津
スと結晶場励起

浩

京都大学

工学研究科

14

ダブルペロブスカイト Lu2NiMnO6 の圧力誘起
相転移

寺田

典樹

15

ホールドープ系鉄系超伝導体のスピン揺動

李

門脇

哲虎

物理 Real-time observation of magnetic structural change by means
Kiyoichiro Motoya
of time-resolved neutron scattering experiments

Tokyo University of
Science

機械工 Superexchange interaction of hexagonal ferrite Ba2Zn2Fe12O22
Shigenori Utsumi
and BaFe12O19 systems

Tokyo University of
Science, Suwa

Establishment of the unified explanation about the phasetransition mechanism (displacive and order-disorder type) in
Ferroelectrics

Hirotake Shigematsu Yamaguchi University
Hiroaki Kadowaki

Tokyo Metoropolitan
University

Hiroshi Takatsu

Kyoto University

物質材料研究機 中性子散乱グル Pressure-induced phase transition in double perovskite
Lu2NiMnO6
構ープ

Noriki Terada

National Institute forMaterials Science

産業技術総合研 省エネルギー研
Spin fluctuations of hole-doped iron-based superconductors
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology

Quantum spin fluctuations and crystal field of the pyrochlore
magnet Tb2Zr2O7

No.

課題名

16

多段メタ磁性転移を示す空間反転対称性の破れた CePtSi3 における磁気構造の決定

氏名

所属

Title

Name

Organization

吉田

雅洋

東京大学

物性研究所

Determination of the Magnetic Structure of theNoncentrosymmetric Heavy-Electron Metamagnet CePtSi3

Masahiro Yoshida

The University of
Tokyo

17

PONTA（高性能偏極中性子散乱装置）IRT 課題 益田

隆嗣

東京大学

物性研究所

IRT project of PONTA

Takatsugu Masuda

The University of
Tokyo

18

フラストレーションをもつ正方格子
C20H19F6N5P における磁気秩序

左右田

稔

東京大学

物性研究所

Magnetic Ordering in S=1/2 Frustrated Square Lattice
C20H19F6N5P

Minoru Soda

The University of
Tokyo

19

マルチフェロイック物質Ｂａ２ＭｎＧｅ２Ｏ７における磁気モーメントの電場制御

益田

隆嗣

東京大学

物性研究所

Electrical control of magnetic moment on multiferroics
Ba2MnGe2O7

Takatsugu Masuda

The University of
Tokyo

20

マルチフェロイック物質 RFe3(BO3)4 (R=Ce,Sm) 益田

隆嗣

東京大学

物性研究所

Magnetic structure of multiferroics RFe3(BO3)4 (R=Ce,Sm)

Takatsugu Masuda

The University of
Tokyo

21

CsFeCl3 における圧力誘起秩序状態の磁気構造

益田

隆嗣

東京大学

物性研究所

Magnetic structure of pressure-induced ordered state in
CsFeCl3

Takatsugu Masuda

The University of
Tokyo

22

カイラル磁性体 CsCuCl3 のカイラルらせん磁性
の検証

高阪

勇輔

広島大学

大学院理学研究
Chiral Helimagnetim in Chiral Inorganic Compound CsCuCl3
科

Yusuke Kousaka

Hiroshima University

23

URu2Si2 の隠れた秩序に伴う多重極秩序の直接
観測

高阪

勇輔

広島大学

大学院理学研究 Direct Observation of the "Hidden Order" due to Multipole
Ordering in URu2Si2科

Yusuke Kousaka

Hiroshima University24

スピン 3/2 反強磁性交替鎖物質 RCrGeO5 (R =Nd or Ho) の磁気構造の決定

長谷正司

The determination of the magnetic structure of the spin-3/2
物質・材料研究 中性子散乱グル
antiferromagnetic alternating chain compounds RCrGeO5 (R = Masashi Hase機構
ープ
Nd or Ho)

National Institute forMaterials Science25

スピン 1/2 テトラマー物質 CuInVO5 の磁気構造
長谷
の決定

正司

物質・材料研究 中性子散乱グル Determination of the magnetic structure of the spin-1/2
tetramer compound CuInVO5
機構
ープ

Masashi Hase

National Institute forMaterials Science26

ワイル半金属候補物質 NdGaSi の磁気構造

左右田

理化学研究所

創発物性科学研
Magnetic structure of Weyl semimetal candidate NdGaSi究センター

Minoru Soda

RIKEN

27

マグネトプランバイト型コバルト酸化物
SrCo12O19 の電荷 - 磁気秩序

浅井

晋一郎

東京大学

物性研究所

Shinichiro Asai

The University ofTokyo

大学院理学研究
IRT project of TOPAN
科

Keisuke Tomiyasu

Tohoku University

・ 申請装置 5G: PONTA

ISSP Activity Report 2017

稔

Charge and magnetic order of magnetoplumbite-type cobalt
oxide SrCo12O19

・ 申請装置 6G: TOPAN

127

28

TOPAN（東北大理：３軸型偏極中性子分光器）
富安
IRT 課題

啓輔

東北大学

29

全対称型多極子秩序による金属−非金属転移に対岩佐する磁気不純物効果

和晃

茨城大学

30

Ce3T4Sn13 (T = Co, Rh, Ru) に現れるカイラル
フェルミオンによる磁気構造と励起

和晃

茨城大学

岩佐

フロンティア応
用原子科学研究センター
フロンティア応
用原子科学研究センター

Magnetic Impurity Effect on the Metal-Nonmetal Transition
Kazuaki Iwasa
Associated with Totally-Symmetric Electron Multipole Ordering

Ibaraki University

Magnetic structures and excitations due to chiral fermionsappearing in Ce3T4Sn13 (T = Co, Rh, Ru)

Ibaraki University

Kazuaki Iwasa

128
ISSP Activity Report 2017

No.

課題名

氏名

所属

31

PrT2X20 (T = Ru, Rh, Os, Ir, X = Al, Zn) における２チャンネル近藤効果

岩佐

和晃

茨城大学

32

質量勾配をもつ非一様系での偏在的原子振動モードであるグレードンの検証

岩佐

和晃

茨城大学

33

T' 構造銅酸化物 Pr2-xCaxCuO4 における磁気相関藤田と超伝導の研究

全基

東北大学

34

Pr1-xLaCexCuO4 の磁気共鳴ピークの組成依存性 池内和彦

総合科学研究機 中性子科学セン
Doping dependence of the magnetic resonance peak in PLCCO Kazuhiko Ikeuchi
構
ター

CROSS

35

Pr1-xLaCexCuO4 の格子振動を通じたギャップ対
池内
称性の観測

和彦

総合科学研究機 中性子科学セン Observation of the gap symmetry due to lattice vibrations in
PLCCO
構
ター

Kazuhiko Ikeuchi

CROSS

Takatsugu Masuda

The University of
Tokyo

Title

フロンティア応
用原子科学研究センター
フロンティア応
用原子科学研究センター
金属材料研究所

Name

Organization

Two-channel Kondo effect in PrT2X20 (T = Ru, Rh, Os, Ir, X =Al, Zn)Kazuaki Iwasa

Ibaraki University

Gradon as a localized atomic motion in mass-graded
inhomogeneous systems

Kazuaki Iwasa

Ibaraki University

Study of spin correlations and superconductivity inT'-structured cuprate oxide Pr2-xCaxCuO4

Masaki Fujita

Tohoku University

・ 申請装置 C1-1: HER
36

HER ( 高エネルギー分解能３軸型中性子分光器 )益田
IRT 課題

隆嗣

東京大学

物性研究所

37

磁気スカーミオン格子相におけるトポロジカル
マグノンの探索

佐藤

卓

東北大学

多元物質科学研
Topological magnon band in the magnetic skyrmion lattice
究所

Taku J Sato

Tohoku University

38

近藤籠目格子 CeRhSn の量子臨界磁気揺動

佐藤

卓

東北大学

多元物質科学研 Detecting quantum critical fluctuations in the disorderedkagome Kondo compound CeRhSn
究所

Taku J Sato

Tohoku University

39

スピントロニクス基盤物質 YIG における磁気弾
性効果

南部

雄亮

東北大学

金属材料研究所

Yusuke Nambu

Tohoku University40

全対称型多極子秩序による金属−非金属転移に対岩佐する磁気不純物効果

和晃

茨城大学

Magnetic Impurity Effect on the Metal-Nonmetal Transition
Kazuaki Iwasa
Associated with Totally-Symmetric Electron Multipole Ordering

Ibaraki University

41

Ce3T4Sn13 (T = Co, Rh, Ru) に現れるカイラル
フェルミオンによる磁気構造と励起

岩佐

和晃

茨城大学

Magnetic structures and excitations due to chiral fermionsappearing in Ce3T4Sn13 (T = Co, Rh, Ru)

Kazuaki Iwasa

Ibaraki University

42

PrT2X20 (T = Ru, Rh, Os, Ir, X = Al, Zn) における２チャンネル近藤効果

岩佐

和晃

茨城大学

Two-channel Kondo effect in PrT2X20 (T = Ru, Rh, Os, Ir, X =Al, Zn)Kazuaki Iwasa

Ibaraki University

43

DyFe2Zn20 における磁気異方性増強を伴う逐次
磁気相転移

岩佐

和晃

茨城大学

Successive magnetic phase transition with enhancement inmagnetic anisotropy of DyFe2Zn20

Kazuaki Iwasa

Ibaraki University44

スピン格子結合系 CuFeO2 のスピン波分散関係の一軸応力変化満田節生

東京理科大学

理学部

Spin wave dispersion relation in a spin-lattice coupled system
CuFeO2 ander uniaxial stressSetsuo Mitsuda

Tokyo University of
Science45

T' 構造銅酸化物 Pr2-xCaxCuO4 における磁気相関藤田と超伝導の研究全基

東北大学

金属材料研究所

Study of spin correlations and superconductivity inT'-structured cuprate oxide Pr2-xCaxCuO4

Masaki Fujita

Tohoku University

46

量子スピン液体の研究広明

首都大学東京理工学研究科物
Quantum spin liquid
理学専攻

Hiroaki Kadowaki

Tokyo Metoropolitan
University

門脇

フロンティア応
用原子科学研究センター
フロンティア応
用原子科学研究センター
フロンティア応
用原子科学研究センター
フロンティア応
用原子科学研究センター
物理IRT project of HER

Magnetic elastic coupling in the spintoronics material
Y3Fe5O12

No.

課題名

氏名

47

空間反転対称性をもたない超伝導体 CeRhSi3 の
磁気励起

阿曽

尚文

琉球大学

48

La5Mo4O16 における長時間磁化緩和と悪魔の階
段

飯田

一樹

総合科学研究機
研究開発部
構

49

ホールドープ系鉄系超伝導体のスピン揺動

李

哲虎

所属

Title

Name

Organization

Naofumi Aso

University of the
Ryukyus

Iida Kazuki

Comprehensive Research
Organization for Scienceand Society

産業技術総合研 省エネルギー研
Spin fluctuations of hole-doped iron-based superconductors
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology

Mitsuhiro Shibayama

The University ofTokyo

理学部物質地球 Magnetic Fluctuations in a Non-CentrosymmetricSuperconductor CeRhSi3
科学科
Long-time magnetization decay and devil's staircase in
La5Mo4O16

・ 申請装置 C1-2: SANS-U

ISSP Activity Report 2017

129

50

SANS-U（二次元位置測定小角散乱装置）IRT 課
柴山
題

充弘

東京大学

物性研究所

51

イミダゾリウム系イオン液体 + プロパノール二成分溶液の相分離メカニズムの解明

下村拓也

室蘭工業大学

大学院工学研究 Phase separation of imidazolium-based ionic liquid+propanolbinary solutions
科

Takuya Shimomura

Muroran Institute ofTechnology

52

非膨潤性ハイドロゲルの構造形成過程の観察

中川

慎太郎

東京大学

物性研究所

Shintaro Nakagawa

The University of
Tokyo

53

ブラシ状高分子中の側鎖のコンフォメーション
の解析

中村

洋

京都大学

工学研究科高分
Conformation analysis of a side chain in brush-like polymers
子化学専攻

Yo Nakamura

Kyoto University

54

Crowding 環境下におけるアルファクリスタリン
井上のサブユニット動態

倫太郎

京都大学

原子炉実験所Subunit dynamics of alpha-crystallin under crowding condition Rintaro Inoue

Kyoto University

55

中性子小角散乱で見る植物性食品タンパク質の
複合構造

佐藤

信浩

京都大学

原子炉実験所

Structural analysis of plant food protein complex by smallangle neutron scattering

Nobuhiro Sato

Kyoto University56

磁性準結晶中の隠れた磁気秩序の探索

佐藤

卓

東北大学

多元物質科学研
Hidden magnetic order in magnetic quasicrystals
究所

Taku J Sato

Tohoku University

57

中性子小角散乱実験による Sr2RuO4 の異常金属
状態の研究

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Anomalous vortex state in Sr2RuO4 studied by SANS
experiments

Hazuki Furukawa

Ochanomizu
University58

空間反転対称性の破れた超伝導体のヘリカル磁束格子の観測古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Herical vortex phase on non-centrosymmetric superconductors Hazuki Furukawa

Ochanomizu
University

59

Fe 系超伝導体の磁束研究

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Vortex study on Fe-based superconductors

Hazuki Furukawa

Ochanomizu
University

60

希釈冷凍機温度領域における CeCoIn5 の磁束構
造の磁場方向依存性古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Field direction dependence of vortex lattice structure on
CeCoIN5 in Dilution temperature

Hazuki Furukawa

Ochanomizu
University61

強磁性超伝導体における自発的磁束格子構造の
研究

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Spontaneous vortex phase in ferromagnetic superconductors

Hazuki Furukawa

Ochanomizu
University62

空間反転対称性の破れた超伝導体の非弾性散乱

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Inelastic neutron scattering experiments on noncentrosymmetric superconductors

Hazuki Furukawa

Ochanomizu
University

IRT project of SANS-U

Insight into structure formation in "non-swelling" hydrogels

130

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

お茶の水女子大 基幹研究院 自学
然科学系

Vortex phase in topological superconductors

Hazuki Furukawa

Ochanomizu
University

東京大学

物性研究所

Structure Characterization of DNA-module gel by Small-Angle
Neutron Scattering

Xiang LiThe University of
Tokyo

大輔

東北大学

多元物質科学研
Current driven motion of skyrmions in helical magnets
究所

Daisuke Okuyama

Tohoku University

松岡

秀樹

京都大学

工学研究科高分 Nanostructure and Stimulli-responsivity of Totally Ionic
Polyion Complex Micelles
子化学専攻

Hideki Matsuoka

Kyoto University

イオン液体中における刺激応答性高分子の圧力
応答

柴山

充弘

東京大学

物性研究所

68

膨潤イオン液体での層構造と緩和

根本

文也

高エネルギー加 物質構造科学研
Layer structure and fructuation in swollen ionic liquids
速器研究機構究所

Fumiya Nemoto

High energy
accelerator researchorganization

69

スピン誘導型強誘電体における誘電 ( 磁気 ) ドメ
満田
イン駆動

節生

東京理科大学

理学部

Ferroelectric domain wall motion in a electromagnetic
multiferroic CuFeO2

Setsuo Mitsuda

Tokyo University of
Science70

界面不活性の働きをする界面活性剤

貞包

浩一朗

同志社大学

生命医科学部医Surfactant molecules behaving as a surface-inactive agent
情報学科

Koichiro Sadakane

Doshisha University

71

高圧条件下における 2 成分混合溶液の新奇な臨
界挙動

貞包

浩一朗

同志社大学

生命医科学部医 Novel critical behavior in a mixture of water / organic solvent
under high-pressure condition
情報学科

Koichiro Sadakane

Doshisha University72

巨大ひずみ加工した Ni, Co に発現する特異な磁
足立
気構造

望

京都大学

原子炉実験所

Anomalous magnetic structures in severely deformed Ni andCo

Nozomu Adachi

Kyoto University

73

アルカン溶媒中でらせん反転を示すポリ（キノキサリン -2,3- ジイル）の小角中性子散乱による 長田
構造解明

裕也

京都大学

工学研究科

Clarification of the Configurations of Chiral Side Chains ofPoly(quinoxaline-2,3-diyl)s Exhibiting Helix Inversion in
Alkane Solvents by Small-angle Neutron Scattering

Yuya Nagata

Kyoto University

74

イミダゾリウム系イオン液体中におけるエタノールの会合体形成

高椋

利幸

佐賀大学

大学院工学系研 Cluster Formation of Ethanol Molecules in Imidazolium-based
Ionic Liquids
究科75

高分子コンポジット中の固体粒子の分散・凝集に及ぼす粒子表面の吸着高分子の影響

鳥飼

直也

三重大学

大学院地域イノ
Effects of Adsorbed Polymer on Dispersion and Aggregation of
Naoya Torikai
ベーション学研
Solid Particles in Polymer Composite
究科76

中性子小角散乱測定による耐熱超合金中の超微細析出物の評価

間宮広明

物質材料研究機 先端材料解析研 Study on ultra-fine precipitates in heat-resistant superalloys
using small angle scattering technique
構
究拠点

77

小角中性子散乱 (SANS) 法による高分子ゲル網目
Li
均一性の定量的評価

Xiang

東京大学

物性研究所

78

小角中性子散乱による反応率臨界ゲルクラスタ
ーの構造解析

Xiang

東京大学

物性研究所

63

トポロジカル超伝導体の磁束格子64

小角中性子散乱による DNA モジュールゲルの構
Li
造解析

65

Current driven motion of skyrmions in helical奥山
magnets66

全イオン性高分子ミセルのナノ構造と刺激応答

67・ 申請装置 C1-3: ULS

古川

Li

はづき

Xiang

物理

Pressure Response of a Stimuli-responsive Polymer in an Ionic
The University of
Mitsuhiro Shibayama
LiquidTokyo

Toshiyuki Takamuku Saga University
Mie University

Hiroaki Mamiya

National Institute forMaterials Science

Quantitative evaluation of uniformity of various polymer
networks by small angle neutron scattering (SANS) with
contrast variation technique

Xiang LiThe University of
Tokyo

SANS study on critical polymer clusters near gel point

Xiang LiThe University of
Tokyo

No.
79

課題名
ULS（極小角散乱装置）IRT 課題

氏名

所属

清水

裕彦

名古屋大学

間宮

広明

Title

大学院理学研究
IRT project of ULS
科

Name

Organization

Hirohiko Shimizu

Nagoya University

物質材料研究機 先端材料解析研
IRT project of mf-SANS
構
究拠点

Hiroaki Mamiya

National Institute forMaterials Science

東京大学

物性研究所

IRT project of iNSE

Xiang LiThe University ofTokyo

金属材料研究所

Neutron spin echo on the iron-based superconducting laddermaterial BaFe2S3

Yusuke Nambu

Tohoku University

Fumiya Nemoto

High energy
accelerator researchorganization

・ 申請装置 C1-3: mf-SANS
80

mf-SANS（小型集束型小角散乱装置）IRT 課題

・ 申請装置 C2-3-1: iNSE
81

iNSE（中性子スピンエコー分光器）IRT 課題

Li

Xiang

82

鉄系梯子型超伝導物質 BaFe2S3 の中性子スピン
エコー

南部

雄亮

東北大学

83

膨潤イオン液体での層構造と緩和

根本

文也

高エネルギー加 物質構造科学研
Layer structure and fructuation in swollen ionic liquids
速器研究機構究所

84

界面不活性の働きをする界面活性剤

貞包

浩一朗

同志社大学

生命医科学部医Surfactant molecules behaving as a surface-inactive agent
情報学科

Koichiro Sadakane

Doshisha University

85

マルチドメイン蛋白質 MurD の ATP 依存的な機中川
能性ドメイン運動

洋

日本原子力研究 階層構造研究グ ATP-dependent functional domain motion of multi-domain
protein MurD
開発機構
ループ

Hiroshi Nakagawa

Japan Atomic Energy
Agency86

脂質膜の粘弾性に及ぼすアルカンの効果

菱田

真史

筑波大学

数理物質系化学 Effects of alkanes on the lipid membrane elastic and viscous
properties
域

Mafumi Hishida

Tsukuba University

ISSP Activity Report 2017

・ 申請装置 C3-1-1: AGNES
87

AGNES（高分解能パルス冷中性子分光器）IRT
課題

山室

修

東京大学

物性研究所

IRT project of AGNES

Osamu Yamamuro

The University of
Tokyo

88

配位高分子ホスト [CuZn(CN)4]- に包接された K+
山室水溶液のダイナミクス

修

東京大学

物性研究所

Dynamics of K+ aqueous solution confined in a coordination
polymer host [CuZn(CN)4]-

Osamu Yamamuro

The University of
Tokyo

89

柔粘性結晶相をもつイオン液体の速いダイナミ
クス

山室

修

東京大学

物性研究所

Fast Dynamics of Ionic Liquids with Plastic-crystalline Phases

Osamu Yamamuro

The University of
Tokyo

90

超高エントロピー液体 C6C10- テトラフェニルポ
山室ルフィリンの長いアルキル鎖ダイナミクス

修

東京大学

物性研究所

Dynamics of long alkylchains in a super-high entropy liquid
C6C10-tetraphenylporphyrin

Osamu Yamamuro

The University of
Tokyo

91

Zn-Ln-Zn 単分子磁石のスピンダイナミクス

麻衣子

日本原子力研究 中性子利用セク
Spin dynamics in Zn-Ln-Zn single-molecule magnets
開発機構
ション

Maiko Kofu

Japan Atomic Energy
Agency131

・ 申請装置 C3-1-2: MINE1

古府

132

No.
92

課題名

氏名

MINE1（京大炉：多層膜中性子干渉計・反射率計）
日野
IRT 課題

所属

Title

Name

Organization

ISSP Activity Report 2017

正裕

京都大学

原子炉実験所

MINE1 (Multilayer neutron interferometer and reflectmeter)

Masahiro Hino

Kyoto University

MINE2 (Multilayer neutron interferometer and reflectmeter)

Masahiro Hino

Kyoto University

・ 申請装置 C3-1-2: MINE2
93

MINE2（京大炉：多層膜中性子干渉計・反射率計）
日野
IRT 課題正裕

京都大学

原子炉実験所94

高分子 / 水界面における生体分子の吸着状態の解
松野
析

寿生

九州大学

大学院工学研究 Analyses of adsorbed biomolecules at the polymer/water
院応用化学部門 interface

Hisao Matsuno

Kyushu University

95

混合液体中における高分子薄膜の膨潤挙動

田中

敬二

九州大学

工学研究院 応Swelling Behavior of Polymer Thin Films in Mixed Non用化学部門（機solvents
能）

Keiji Tanaka

Kyushu University

英樹

東京大学

物性研究所

IRT project of HQR

Hideki Yoshizawa

The University of
Tokyo

東北大学

IMRAM

Electric polarization of antiferromagnetic Skyrmion-lattice like
Johannes Reim
spin structure in CaBaCo2Fe2O7

Tohoku University

東北大学

IMRAM

Switching the magnetic order in CaBaCo2Fe2O7 using magnetic
Johannes Reim
field

Tohoku University

・ 申請装置 T1-1: HQR
96

HQR（高分解能中性子散乱装置）IRT 課題

吉沢

97

Electric polarization of antiferromagnetic
Skyrmion-lattice like spin structure in
CaBaCo2Fe2O7

レイム
ネス

ヨハ

98

Switching the magnetic order in
CaBaCo2Fe2O7 using magnetic field

レイム
ネス

ヨハ

99

時間分割中性子散乱による磁気構造変化過程の
実時間追跡

元屋

清一郎

東京理科大学

理工学部学科

100 Rb2MoO4 における多形転移とソフトフォノン

重松

宏武

山口大学

教育学部

Polymorph Transition and Soft Phonon in Rb2MoO4

Hirotake Shigematsu Yamaguchi University101

強誘電体の相転移機構（変位型及び秩序−無秩序重松型）に関する統一的理解の確立

宏武

山口大学

教育学部

Establishment of the unified explanation about the phasetransition mechanism (displacive and order-disorder type) in
Ferroelectrics

Hirotake Shigematsu Yamaguchi University

102

2 等辺 Ising 三角格子磁性体 CoNb2O6 における一軸応力による鎖間交換相互作用の制御

満田

節生

東京理科大学

理学部

物理 Real-time observation of magnetic structural change by means
Kiyoichiro Motoya
of time-resolved neutron scattering experiments

物理

Uniaxial-stress-control of competing inter-chain exchangeinteractions of isosceles-triangular lattice Ising magnet
CoNb2O6

Tokyo University of
Science

Setsuo Mitsuda

Tokyo University of
Science

Masaki Fujita

Tohoku University

Masaki Fujita

Tohoku University

Yusuke Kousaka

Hiroshima University

・ 申請装置 T1-2: AKANE
103

AKANE（東北大金研：三軸型中性子分光器 ）IRT 課題

藤田

全基

東北大学

金属材料研究所 IRT project of AKANE

104

T' 構造銅酸化物 Pr2-xCaxCuO4 における磁気相関藤田と超伝導の研究全基

東北大学

金属材料研究所

105

幾何学的フラストレート系 (Mn,Mg)Cr2O4 におけるらせん磁気構造のクロスオーバー

勇輔

広島大学

大学院理学研究 Crossover between conical and screw magnetic phase in(Mn,Mg)Cr2O4
科

高阪

Study of spin correlations and superconductivity inT'-structured cuprate oxide Pr2-xCaxCuO4

No.

課題名

氏名

106 MPO4 (M: 遷移金属 ) のカイラル磁気構造の検証 高阪

勇輔

広島大学

大学院理学研究 Chiral Magnetism in New Chiral Magnetic Compounds MPO4
(M: Transition Metal)科

Yusuke Kousaka

Hiroshima University

107 CrX (Cr=Si, Ge) のカイラル磁気構造の検証

高阪

勇輔

広島大学

大学院理学研究
Chiral Magnetic Structure in CrX (X=Si, Ge)科

Yusuke Kousaka

Hiroshima University

108 ホールドープ系鉄系超伝導体のスピン揺動李産業技術総合研 省エネルギー研
Spin fluctuations of hole-doped iron-based superconductors
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology

Yusuke Nambu

Tohoku University

Masatomo Yashima

Tokyo Institute ofTechnology

哲虎

所属

Title

Name

Organization

・ 申請装置 T1-3 HERMES109

HERMES（東北大金研：中性子粉末回折装置）
IRT 課題

南部

雄亮

東北大学

金属材料研究所 IRT project of HERMES

110

層状ペロブスカイト型酸化物の結晶構造とイオ
ン拡散経路

八島

正知

東京工業大学

理学院

南部

雄亮

東北大学

金属材料研究所 Crystal and magnetic structures of Yb3Fe5O12

Yusuke Nambu

Tohoku University

奥山

大輔

東北大学

多元物質科学研
Powder diffraction experiment on chiral magnetic Re5Ru3Al2
究所

Daisuke Okuyama

Tohoku University

山室

修

東京大学

物性研究所

Structures of Pd/Ru nano-alloys

Osamu Yamamuro

University of Tokyo

山本

隆文

京都大学

工学研究科

Magnetic structure of novel oxychalcogenides with mixed
anion coordination

Takafumi Yamamoto Kyoto University

115 熱電半導体 (Bi,Sb)2Te3 固溶体の酸化過程

栗栖

牧生

愛媛大学

理工学研究科（理学系）

Oxidation Process in (Bi,Sb)2Te3 Pseud-binary Solid Solutions

Makio Kurisu

Ehime University

116 中性子回折によるナノ炭素中液晶の構造解析

根本

文也

高エネルギー加 物質構造科学研 Structural analysis on liquids crystals in nano-sized carbon by
neutron diffraction
速器研究機構究所

Fumiya Nemoto

新規ペロブスカイト関連 AA'BO4 型構造をもつ
117 酸化物イオン伝導体の結晶構造とイオン伝導経路の解明

High energy
accelerator researchorganization

藤井

孝太郎

東京工業大学

理学院化学系

111 Yb3Fe5O12 の結晶・磁気構造解析
112

Powder diffraction experiment on chiralmagnetic Re5Ru3Al2

113 Pd/Ru ナノ合金の構造
114

複合アニオン配位を有する新規オキシカルコゲ
ナイドの磁気構造

Crystal structure and ion-diffusion path of layered perovskitetype oxides

ISSP Activity Report 2017

Structural Investigation of the Novel Perovskite related
AA'BO4-type Materials -Oxide-Ionic and Electronic Conducting Kotaro Fujii
Materials-

Tokyo Institute ofTechnology

133

118

パイロクロア構造を有する Na3Mn(CO3)2Cl の磁
那波
気構造

和宏

東北大学

多元物質科学研 Magnetic structure of Na3Mn(CO3)2Cl with Mn pyrochlorenetwork
究所

Kazuhiro Nawa

Tohoku University

119

量子臨界点近傍にある YbCo2Zn20 の置換系試料
阿曽の結晶構造と磁気構造

尚文

琉球大学

理学部物質地球 Crystal and magnetic structures in doped systems of
YbCo2Zn20 in vicinity of a quantum critical point
科学科

Naofumi Aso

University of the
Ryukyus120

パイロクロア磁性体 Tb2M2O7 (M = Zr, Hf, Pd,
Pt) の結晶構造

高津

浩

京都大学

工学研究科

Hiroshi Takatsu

Kyoto University

121

新規カイラル磁性体 MPO4 (M: 遷移金属 ) の磁
気構造解析

高阪

勇輔

広島大学

大学院理学研究 Magnetic structure analysis of new chiral magnetic compounds
Yusuke Kousaka
MPO4 (M: transition metal)
科

Structural investigation of pyrochlore oxides Tb2M2O7 (M=Zr,
Hf, Pd, Pt)

Hiroshima University

134
ISSP Activity Report 2017

No.

課題名

氏名

所属

122

新規カイラル磁性体 CrX(X: Si, Ge) の磁気構造
解析

高阪

勇輔

広島大学

123

混合原子価状態をもつ新奇酸フッ化物ペロフス
カイトの磁気構造辻本吉廣

物質材料研究機 機能性材料研究 Neutron Diffraction Study of New Oxyfluoride Perovskites with
Yoshihiro Tsujimoto
Mixed-Valence States
構
拠点

木村

宏之

東北大学

多元物質科学研
IRT proposal for FONDER (Neutron 4-circle diffractometer)
究所

Hiroyuki Kimura

Tohoku University

Satoru Kobayashi

Iwate University

Kazuaki Iwasa

Ibaraki University

Title

大学院理学研究 Magnetic Structure Analysis in New Chiral Magnetic
Compounds CrX (X: Si, Ge)科

Name
Yusuke Kousaka

Organization
Hiroshima University
National Institute forMaterials Science・ 申請装置 T2-2: FONDER
124 FONDER( 中性子 4 軸回折装置 )IRT 課題125

塑性歪みを加えた Pt3Fe 反強磁性体における強磁性の発現機構

小林

悟

岩手大学

理工学部物理 ･材料理工学科126

DyFe2Zn20 における磁気異方性増強を伴う逐次
磁気相転移

岩佐

和晃

茨城大学

フロンティア応Successive magnetic phase transition with enhancement in
用原子科学研究
magnetic anisotropy of DyFe2Zn20
センター

127

typeIII 型反強磁性体 Pt-Mn における整合ー非整高橋
合磁気相転移

美和子

筑波大学

数理物資系

128

S=1/2 パーフェクトカゴメ系
CaCu3(OH)6Cl20.6H2O の磁気構造解析

飯田

一樹

上床

美也

Mechanism of ferromagnetism in plastically deformed Pt3Fe
antiferromagnet

Commensurate-Incommensurate Magnetic Phase Transition in
Miwako Takahashi
Type-III Anti-ferromagnet Pt-Mn

Tsukuba University

総合科学研究機
研究開発部
構Magnetic structure in S=1/2 perfect kagome system
CaCu3(OH)6Cl20.6H2O

Kazuki Iida

Comprehensive Research
Organization for Scienceand Society

東京大学

IRT project of Accessory

Yoshiya Uwatoko

The University ofTokyo・ 申請装置 Accessory
129 アクセサリー IRT 課題

物性研究所

平成 29 年度 軌道放射物性研究施設 共同利用課題一覧 / Joint Research List of Syncrotron Radiation Researcher 2017
播磨分室

BL07LSU / Harima Branch BL07LSU

ISSP Activity Report 2017

No.

課題名

1

オペランド軟 X 線分光の協奏・高度化が拓く触
媒科学

吉信

淳

東京大学

物性研究所

2

省エネ・創エネ・蓄電デバイスのオペランドナ
ノ分光

尾嶋

正治

東京大学

大学院工学系研 Operando nano-spectroscopy for energy efficient, power
generation and energy storage devices
究科

3

偏光スイッチングを利用した非自明な磁気構造とスピンダイナミクスの観測

和達

大樹

東京大学

物性研究所

4

モット絶縁体１T-TaS2 における電荷密度波の相転移ダイナミクスの時間分解二次元光電子回折
による研究

大門

寛

Study on the Dynamics of Charge Density Wave in Mott
奈良先端科学技 物質創成科学研
Insulator 1T-TaS2 Using Time-resolved Two-dimensional X-Ray Hiroshi Daimon
術大学院大学
究科
Photoelectron Diffraction.

5

大気非曝露・高分解能軟 X 線発光分光による二次電池正極材料の酸素レドックスの研究大久保

6

3D nano-ESCA を用いた時空間オペランド光電子分光への挑戦：GaN トランジスタ表面において局所電場 吹留により誘起された遅いキャリア・ダイナミクスの解明

7

GaN 界面のキャリアダイナミクス研究

8
9
10
11

氏名

Title
New Frontier of Catalysis Science Opened by Synergy andDevelopment of Operando Soft X-ray Spectroscopies

Observation of nontrivial magnetic structures and spin
dynamics by using polarization switching

High-energy-resolution soft x-ray emission spectroscopy studiesof oxygen redox reactions in cathode materials for rechargeable
batteries using a sample transfer system without air exposure

Name

Organization

Jun Yoshinobu

The University ofTokyo

Masaharu Oshima

The University ofTokyo

Hiroki Wadachi

The University of
Tokyo
Nara Instituteof Science andTechnology
The University of
Tokyo

東京大学

工学系研究科博一

東北大学

電気通信研究所 spectroscopy using 3D nano-ESCA: Slow surface carrier dynamics Hirokazu Fukidome

Tohoku University

吹留

博一

東北大学

電気通信研究所 Study of Carrier Dynamics at the GaN interface

Hirokazu Fukidome

Tohoku University

過剰ドープ銅酸化物超伝導体における電荷秩序石井賢司

量子科学技術研 関西光科学研究
Charge order in over-doped cuprate superconductors
究開発機構
所

Kenji Ishii

National Institutes for
Quantum and Radiological
Science and Technology

シリセン形成過程の時分割光電子ホログラフィー林Koichi Hayashi

Nagoya Institute ofTechnology

Hidenori Fujiwara

Osaka University

Daisuke Asakura

National Institute ofAdvanced Industrial
Science and Technology

Susumu Yamamoto

The University ofTokyo

共鳴非弾性軟 X 線散乱による室温マルチフェロ
イクス Cr2O3 の電場・内部磁場制御電子状態の直接観測
オペランド軟 X 線発光分光によるリチウムイオン電池正極材料の電子軌道選択的な電子状態解
析

將史

所属

好一

藤原

秀紀

朝倉

大輔

Okubo Masashi

Challenge of spatio-temporal operando photoelectron

induced by local electric field of GaN-based transistors

名古屋工業大学 物理工学科

Picosecond time-resolved photoelectron holography during
silicene formation process

SX-RIXS studies of electronic structures for the room大学院理学系研
temperature-multiferroic Cr2O3 under electric and magnetic
究科
fieldsOrbital-selective electronic structure analyses of cathode
産業技術総合研 省エネルギー研
materials for Li-ion batteries by operando soft x-ray emission
究所
究部門
spectroscopy

大阪大学

135

12

プラズモンナノ材料におけるキャリアダイナミ
クスの実時間観測

山本

達

東京大学

物性研究所

Real-time Observation of Carrier Dynamics in Plasmonic
Nanomaterials

13

ドナー・アクセプター有機層接合界面での電荷分離と再結合過程の実時間測定

小澤健一

東京工業大学理学院

Real-time observation of charge separation and recombination
Kenichi Ozawa
processes at organic-organic interfaces

Tokyo Institute ofTechnology

14

Temperature Induced Semiconductor <=>Metal Phase Transition Followed by TimeResolved Photoemission

D'angeloMarie

Institutdes
Nanosciencesde Paris

physics

Temperature Induced Semiconductor <=> Metal Phase
Transition Followed by Time-Resolved Photoemission

Paris Institut for
Nanosciences

15

REXS、RIXS のためのθ -2 θ自動スキャンシス
原田
テムの開発

東京大学

物性研究所

Development of the automatic θ -2 θ scan for REXS and RIXS Yoshihisa Harada

慈久

D'angelo Marie

The University of
Tokyo

136
ISSP Activity Report 2017

No.

課題名

16

The determination of the catalytic role of Mn during theelectrochemical water oxidation reaction of Graphenesupported Ni6MnO8 catalyst by Mn 2p3d RIXS

17

氏名

所属

Title

Name

Organization

Max Planck
Institute

Chemical
EnergyConversion

The determination of the catalytic role of Mn during theelectrochemical water oxidation reaction of Graphenesupported Ni6MnO8 catalyst by Mn 2p3d RIXSAl Samarai Mustafa

Max Planck Institute

O K-edge XAS と RIXS 用いた Bi2223 超伝導体
宮脇 淳
の研究

東京大学

物性研究所

O K-edge XAS and RIXS study on Bi2223 Superconductor

Jun Miyawaki

The University of
Tokyo

18

生体適合性ポリマー材料表面に形成される中間
水の電子状態観測

山添 康介

東京大学

物性研究所

Observation of the electronic structure of intermediate water
formed on the surface of biocompatible polymers

Kousuke Yamazoe

The University of
Tokyo

19

強磁性 Co/Pt 超格子薄膜の光誘起磁化反転の時
間分解 X 線磁気円二色性測定

平田 靖透

東京大学

物性研究所

20

大気非曝露搬送系を用いた二次電池正極材料の遷移金属 L 吸収端 高分解能軟 X 線発光分光

大久保 將史東京大学

工学系研究科21

酸素フリーなオペランドセルを用いた軟 X 線発
光分光によるリチウムイオン電池正極材料の酸素 2p 電子状態の研究

朝倉 大輔

Electronic-structure analysis of O 2p orbital of Li-ion-battery
産業技術総合研 省エネルギー研
cathode materials by soft x-ray emission spectroscopy with
究所
究部門
oxygen-free operando cell system

22

強誘電体を用いた二酸化チタン薄膜のポテンシ
ャル構造と光励起キャリア寿命の制御

小澤 健一

東京工業大学理学院

23

多層膜を用いた共鳴Ｘ線非弾性回折の実証実験

宮脇 淳

東京大学

24

GaN 界面のキャリアダイナミクス研究 (II) 界面
化学処理によるダイナミクスの変化

吹留

博一

25

グラフェン・BN・などを組み合わせた二次元原子薄膜ヘテロ接合界面の物性探索と新規な量子デバイス応用吹留

博一

26

Investigating the Electronic Structure of the
Nitrogenase Enzyme by 2p3d RIXS

27

Al Samarai
Mustafa

Time-Resolved X-Ray Magnetic Circular Dichroism of
Photo-Induced Magnetic Reversal in Ferro-Magnetic Co/Pt
Yasuyuki Hirata
Superlattice Thin Film
High-energy-resolution transition-metal L-edge soft x-ray emission
spectroscopy studies of cathode materials for rechargeable
Okubo Masashi
batteries using a sample transfer system without air exposure

The University ofTokyo
The University ofTokyo

Daisuke Asakura

National Institute ofAdvanced Industrial
Science and Technology

Control of the potential structure of TiO2 thin film and thelifetime of photoexcited carriers by ferroelectric crystal

Kenichi Ozawa

Tokyo Institute ofTechnology

物性研究所

Demonstration of Resonant Inelastic Diffraction from
Multilayers

Jun Miyawaki

The University of
Tokyo

東北大学

電気通信研究所

Study of Carrier Dynamics at the GaN Interface (II) Change indynamics by treating interface chemistry

Hirokazu Fukidome

Tohoku University

東北大学

電気通信研究所 spectroscopy using 3D nano-ESCA: Slow surface carrier dynamics Hirokazu Fukidome

Tohoku University

Van Kuiken
BenjaminMax Planck
Institute

Chemical
EnergyConversion

Van Kuiken
BenjaminMax Planck Institute

プラズマ誘起液相反応場の軟 X 線分光診断

寺嶋

東京大学

大学院新領域創 Soft X-ray spectroscopy of plasma-induced reaction field in
liquid成科学研究科Kazuo Terashima

The University of
Tokyo

28

軟 X 線吸収及び発光分光によるハイドレートメ
ルト中の水とリチウムイオンの相互作用の研究

崔

東京大学

物性研究所

The interaction of water and Li ion in hydrate melt studied bysoft X-ray absorption and emission spectroscopy

Yitao Cui

The University of
Tokyo

29

光エネルギー変換過程の実時間観測に向けた時
間分解オペランド XPS の開発

山本

達

東京大学

物性研究所

Development of time-resolved Oprando XPS for the real time
monitoring of light energy conversion processes

Susumu Yamamoto

The University of
Tokyo

30

ホールドープ銅酸化物における電荷励起とそのスピン相関との結合の可能性石井賢司

量子科学技術研 関西光科学研究 Charge excitations in hole-doped cuprates and their possible
coupling to spin correlation
究開発機構
所

Kenji Ishii

National Institutes for
Quantum and Radiological
Science and Technology

31

Ion-water interaction on the molecular level

Yin Zhong

Yin ZhongDeutsches ElektronenSynchrotron

32

ハーフメタル型電子状態を有する Co2MnSi および Mn2VAl ホイスラー合金単結晶の磁場中共鳴 梅津
非弾性軟 X 線散乱 (SX-RIXS)

和夫
藝涛

理恵

Deutsches
ElektronenSynchrotron
東北大学

Challenge of spatio-temporal operando photoelectron

Laboratoryof Physical
Chemistry

induced by local electric field of GaN-based transistors

Investigating the Electronic Structure of the Nitrogenase
Enzyme by 2p3d RIXS

Ion-water interaction on the molecular level

Resonant inelastic soft X-ray scattering (SX-RIXS) in magnetic
金属材料研究所 field of single crystal Co2MnSi and Mn2VAl Heusler alloys with Rie Umetsu
half-metal-type electronic structure

Tohoku University

No.

課題名

氏名

33

時分割光電子ホログラフィーの確立とシリセン形成過程の観測林

34

微高分解能二次元光電子分光による機能材料における活性中心の局所構造及び電子状態の研究

大門

好一
寛

所属

Title

Development of time-resolved photoelectron holography
and its application to the structural observation of silicene
formation
Analysis of Structures and Electronic States of [Active-site]
奈良先端科学技 物質創成科学研
in Functional Materials by Microscopic High-resolution Two術大学院大学
究科
Dimensional Photoelectron Spectroscopy

名古屋工業大学 物理工学科

Name

Organization

Koichi Hayashi

Nagoya Institute ofTechnology

Hiroshi Daimon

Nara Instituteof Science andTechnology

柏キャンパス E 棟 / Laser and Synchrotron Research Laboratory in Kashiwa
No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017137

1

Pb/Ge(111)-α の laser-SARPES

矢治

光一郎

東京大学

物性研究所

Laser-SARPES measurement of spin-polarized surface states on
Koichiro Yaji
Pb/Ge(111)-α

The University of
Tokyo

2

Graphen/Sn/SiC の laser-ARPES，laserSARPES

矢治

光一郎

東京大学

物性研究所

Laser-ARPES and -SARPES measurements of Graphen/Sn/SiC

Koichiro Yaji

The University of
Tokyo

3

Searching for topological states in IrTe2

張

鵬

東京大学

物性研究所

Searching for topological states in IrTe2

Peng Zhang

The University of
Tokyo

4

Study of topological states in Fe-based
superconductor

張

鵬

東京大学

物性研究所

Study of topological states in Fe-based superconductor

Peng Zhang

The University of
Tokyo

5

トポロジカル近藤絶縁体候補物質である希土類
硼化物単結晶の表面電子状態とスピン・軌道偏
極構造

大坪

嘉之

大阪大学

生命機能研究科

Surface electronic states and its spin/orbital polarization of
Yoshiyuki Ohtsubo
rare-earth borides as candidates of topological Kondo insulator

Osaka University

6

3R-NbS2 Q バレーにおけるスピン構造の決定

黒田

健太

東京大学

物性研究所

Probing the spin-structure of 3R-NbS2 on single domains at
the Q valley

Kenta Kuroda

The University of
Tokyo

7

銀の量子井戸状態の光電子分光

黒田

健太

東京大学

物性研究所

Controls of spin-orbit interband coupling in heavy atoms on
quantum well states

Kenta Kuroda

The University of
Tokyo

8

薄膜スピン分裂状態のバンド間スピン軌道混成
の研究

黒田

健太

東京大学

物性研究所

Kenta Kuroda

The University of
Tokyo

9

擬一次元新型トポロジカルスピン分裂表面バンドの直接観測

近藤

猛

東京大学

物性研究所

Direct investigation of the spin-polarized Dirac surface state inTakeshi Kondo
a quasi-one dimensional material beta-Bi4I4

The University of
Tokyo

10

バルク敏感高分解能スピン分解光電子分光を用いたハーフメタル強磁性体における有限温度効
果の研究

横谷

尚睦

岡山大学

11

高分解能スピン・角度分解光電子分光によるハーフメタル強磁性体 CoS2 の電子構造研究

横谷

尚睦

岡山大学

12

原子層 In 超薄膜の特異なスピン構造

坂本

一之

千葉大学

大学院工学研究 Peculiar spin structure in atomic-In-layers superconductor
院

13

トポロジカル半金属におけるスピン偏極した表面状態の観測

坂野

昌人

東京大学

工学系研究科

Investigation of the interband spin-orbit hybridization of
Rashba spin splitting in thin films

Studies of finite temperature effects of half-metallic
自然科学研究科 ferromagnets by bulk-sensitive high-resolution spin-resolved
photoemission spectroscopy
Study on electronic structures in half-metallic ferromagnet
自然科学研究科 CoS2 by high-resolution spin- and angle-resolved
photoemission spectroscopy

Observation of spin-polarized surface states on topologicalsemimetals

Takayoshi Yokoya

Okayama University

Takayoshi Yokoya

Okayama University

Kazuyuki Sakamoto

Chiba University

Masato Sakano

The University of
Tokyo

138
ISSP Activity Report 2017

No.

課題名

氏名

所属

14

新規スピントロニクス物質におけるスピン分解
角度分解光電子分光

小林

正起

東京大学

工学系研究科

Spin- and angle-resolved photoemission spectroscopy on novel
Masaki Kobayashi
spintronics materials

The University of
Tokyo

15

新奇超伝導体 RO1-xFxBiS2(R=La,Ce,Nd) のスピ
ン角度分解光電子分光

奥田

太一

広島大学

HiSOR

Spin- and angle-resolved photoemission study of
RO1-xFxBiS2(R=La,Ce,Nd)

Taichi Okuda

Hiroshima University

16

高空間分解レーザー角度分解光電子分光による
CeCoIn5 の電子状態観測

大田

由一

東京大学

物性研究所

Yuichi Ota

The University of
Tokyo

17

インジウム原子層超伝導体におけるラシュバス
ピン分裂の直接観察

内橋

隆

18

スピン分解角度分解光電子分光による TaSi2 のスピン構造の研究

伊藤

孝寛

19

スピン分解角度分解光電子分光による GdTe2 のCDW ギャップ内表面状態の研究

伊藤

孝寛

20

高温超電導体のスピン干渉光電子放出

Hugo Dil

Title

Direct observation of electronic state on CeCoIn5 with using
high space resolution laser-ARPES

Name

ナノアーキテク
Direct observation of Rashba effect-induced spin splitting in an
物質・材料研究
Takashi Uchihashi
トニクス研究拠indium atomic-layer superconductor
機構
点
シンクロトロン
Spin-resolved angle-resolved photoemission study of spin
Takahiro Ito
名古屋大学
光科学研究セン
texture of TaSi2
ター
シンクロトロン
Spin-resolved angle-resolved photoemission study of surface
Takahiro Ito
名古屋大学
光科学研究セン
states among CDW gap of GdTe2
ター
スイス連邦工科ローザンヌ校大学

Spin interference of photoelectron emitted from high-Tc
superconductor BSCCO

Hugo Dil

Organization

National Institute forMaterials Science
Nagoya University
Nagoya University
PolytechniqueFédérale de Lausanne平成２９年度 スーパーコンピュータ 共同利用課題一覧 / Joint Research List of Supercomputer System 2017
No.

課題名

氏名

所属

Title

Name

Organization

1. 第一原理計算 / First‒Principles Calculation of Materials Properties

ISSP Activity Report 20171

ハード及びソフトナノ物質の原子構造と電子物
性

押山

淳

東京大学工学系研究科

Atomic Structures and Electronic Properties of Hard- and SoftAtsushi Oshiyama
Nano Materials

The University of
Tokyo

2

ハード及びソフトナノ物質の原子構造と電子物
性

押山

淳

東京大学工学系研究科

Atomic Structures and Electronic Properties of Hard- and SoftAtsushi Oshiyama
Nano Materials

The University of
Tokyo

3

電子・光機能を持つ界面の計算科学的研究

信定

克幸

分子科学研究所

Computational studies of electronic and photonic functional
nano-interfaces

Katsuyuki Nobusada

Institute for Molecular
Science

4

電子・光機能を持つ界面の計算科学的研究

信定

克幸

分子科学研究所

Computational studies of electronic and photonic functional
nano-interfaces

Katsuyuki Nobusada

Institute for Molecular
Science5

スピントロニクス材料および分子性磁性体の原子構造、磁気状態、電子状態の解析

小田竜樹

金沢大学理工研究域数物科学系

Analyses on atomic structure, magnetism, and electronic
structure in spintronics materials and molecular magnets

Tatsuki Oda

Kanazawa University

6

高機能スピントロニクス材料物質および分子性
磁性体の原子・磁気・電子構造の解析

小田竜樹

金沢大学理工研究域数物科学系

Analyses on atomic, magnetic, and electronic structures in
Tatsuki Oda
high-performance spintronics materials and molecular magnets

Kanazawa University

7

超並列電子状態計算とデータ科学の融合による大規模デバイス材料研究

星8

電池・触媒界面物性に関する第一原理 " サンプリ
館山ング " 研究9

実験データを援用した新しい物質構造予測手法の開発と応用10139

鳥取大学大学院工学研究科機械宇 Large-scale device-material research by massively parallel
electronic structure calculation and data science
宙工学専攻応用数理工学講座

Takeo Hoshi

Tottori University

佳尚

物質・材料研究機構 国際ナノア DFT "sampling" studies on interfacial properties of batteries
and catalysts
ーキテクトニクス研究拠点

Yoshitaka Tateyama

National Institute forMaterials Science

常行

真司

東京大学大学院理学系研究科物理 Development and application of a new method for material
structure prediction supported by experimental data
学専攻

Shinji Tsuneyuki

The University ofTokyo

第一原理計算による Singlet-Triplet splitting の
評価

野口

良史

東京大学物性研究所

Yoshifumi Noguchi

The University of
Tokyo

11

第四次革新的手法を用いた合理的創薬手法の開発およびその応用

常盤広明

立教大学理学部化学科未来分子研 Development & Application of Rational Drug Design using the
Hiroaki Tokiwa
Forth Innovation Methodology
究センター

12

実空間差分法に基づく第一原理電子状態・輸送
特性計算コードの開発とシミュレーション

小野倫也

筑波大学計算科学研究センター

13

第一原理量子論による新規相変化メモリの設計

白石

賢二

名古屋大学
研究所

14

表面磁性超薄膜の第一原理計算

合田

義弘

東京工業大学物質理工学院材料系

15

強相関材料の非平衡伝導特性に対する理論と第一原理計算の協奏研究浅井美博

産業技術総合研究所

健夫

First-principles calculation of singlet-triplet splitting

Development of first-principles electronic-structure andtransport calculation method based on real-space finitedifference approach

Rikkyo University

Tomoya Ono

University of Tsukuba

Kenji Shiraishi

Nagoya University

First-principles calculations of magnetic ultrathin films on
surfaces

Yoshihiro Gohda

Tokyo Institute ofTechnology

Theoretical and first principle studies of non-equilibriumtransport properties of strongly correlated materials

Yoshihiro Asai

未来材料・システム Design of New Phase Change Memories Based on First
Principles Calculations

National Institute ofAdvanced Industrial Scienceand Technology (AIST)140
ISSP Activity Report 2017

No.

課題名

氏名

所属

16

第一原理計算によるナトリウムイオン電池電極
材料の解析

山田

淳夫

東京大学工学系研究科

17

酸水素化物における水素 1s 金属状態および超伝
明石
導の追求

18

太陽光エネルギー変換における基礎過程の研究と材料設計指針獲得のための大規模第一原理計
算

19

Title

Name

Organization

Atsuo Yamada

The University of
Tokyo

遼介

東京大学大学院理学系研究科物理 Exploration of hydrogen-1s metallic state and superconductivty
Ryosuke Akashiin oxyhydride compounds
学専攻

The University of
Tokyo

山下

晃一

東京大学大学院工学系研究科

Large scale ab initio calculations on the fundamental processesof solar energy convergence devices and on designing
Koichi Yamashita
principles for new materials

The University ofTokyo

第一原理計算による有機強誘電体・圧電体の物
性予測

石橋

章司

産業技術総合研究所

Prediction of properties of organic ferroelectrics andpiezoelectrics by first-principles calculation

Shoji Ishibashi

National Institute ofAdvanced Industrial
Science and Technology20

遷移金属酸化物の第一原理電子状態計算

山内邦彦

大阪大学産業科学研究所

First-Principles DFT Calculations for Transition-Metal Oxides

Kunihiko Yamauchi

Osaka University

21

ナノ構造の励起電子動力学と光学応答の第一原
理計算

渡辺

一之

東京理科大学理学部

First-Principles Study of Excited Electron Dynamics andOptical Responses of Nanostructures

Kazuyuki Watanabe

Tokyo University of
Science22

実空間差分法に基づく第一原理電子状態・輸送
特性計算コードの開発とシミュレーション

小野倫也

筑波大学計算科学研究センター

Development of first-principles electronic-structure andtransport calculation method based on real-space finitedifference approach

Tomoya Ono

University of Tsukuba

23

ナノ構造のイオン輸送特性、電気特性および界面電子状態の理論解析

渡邉聡

東京大学大学院工学系研究科マテ Theoretical Analyses on Ionic Transport Properties, Electrical
Properties and Interfacial Electronic States of Nanostructures
リアル工学専攻

Satoshi Watanabe

The University of
Tokyo

24

ナノ構造のイオン輸送特性、電気特性および界面電子状態の理論解析

渡邉聡

東京大学大学院工学系研究科マテ Theoretical Analyses on Ionic Transport Properties, Electrical
Properties and Interfacial Electronic States of Nanostructures
リアル工学専攻

Satoshi Watanabe

The University of
Tokyo

25

非類似性を利用したチトクロム c 複合体の構造
変化解析

重田

育照

筑波大学大学院数理物質科学研究 Structural transition analyses on cytochrome c complexes
using dissimilarity
科

Yasuteru Shigeta

University of Tsukuba

26

表面・界面におけスピン構造の第一原理計算石井史之

金沢大学理工研究域数物科学系

First-principles calculations of spin textures at the surfaces andFumiyuki Ishii
interfaces

Kanazawa University

27

f-d 金属間化合物の相対論的電子状態計算

松本宗久

東京大学物性研究所

Relativistic electronic structure calculations for f-dintermetallics

Munehisa
Matsumoto

The University of
Tokyo

28

グラフェン／イオン液体界面の第一原理分子動
力学シミュレーション

大戸

達彦

大阪大学大学院基礎工学研究科

Ab initio molecular dynamics simulation of graphene/ionicliquids interfaces

Tatsuhiko Ohto

Osaka University

29

CO2 転換プロセスのための酸塩基酸化物触媒水
和表面のプロトン活性に関する研究山口周

東京大学大学院工学系研究科

Protonic Activity on the Hydrated Surface of Acidic and Basic
Oxide Catalyst for CO2 Conversion Processes

Shu Yamaguchi

The University of
Tokyo

30

結晶構造探索手法の開発と磁石・スピントロニ
クス材料探索山下智樹

国立研究開発法人物質・材料研究 Development of crystal structure prediction method andsearch for magnet and spintronics materials
機構

Tomoki Yamashita

National Institute forMaterials Science(NIMS)31

固液界面の機能性杉野修

東京大学物性研究所

Functional property of solid-liquid interfaces

Osamu Sugino

The University of
Tokyo

32

高圧力下における共有結合性液体・ガラスの構
造と電子状態の第一原理計算

下條冬樹

熊本大学大学院自然科学研究科

First-Principles Molecular-Dynamics Study of Structural andElectronic Properties of Covalent Liquids and Glass under
Pressure

Fuyuki Shimojo

Kumamoto University

First-principles study on electrode materials for sodium ion
batteries

No.

課題名

氏名

所属

33

ナノ構造の励起電子動力学と光学応答の第一原
理計算

渡辺

一之

東京理科大学理学部

First-Principles Study of Excited Electron Dynamics andOptical Responses of Nanostructures

34

金属酸化物の性質を特徴付ける構造単位の探索

赤木和人

東北大学材料科学高等研究所

Exploration of structure motifs characterizing the metal oxides Kazuto Akagi

35

超並列電子状態計算とデータ科学の融合による大規模デバイス材料研究星36

炭素より重い IV 族元素の二次元結晶の電子状態
洗平と熱力学的安定性

37

ナノ構造の量子伝導の第一原理計算

38

Title

Name

Organization

Kazuyuki Watanabe

Tokyo University of
Science
WPI-AIMR, Tohoku
University

ISSP Activity Report 2017鳥取大学大学院工学研究科機械宇 Large-scale device-material research by massively parallel
electronic structure calculation and data science
宙工学専攻応用数理工学講座

Takeo Hoshi

Tottori University

昌晃

名古屋大学未来材料・システム研 Electronic States and Thermodynamic Stability of TwoDimensional Crystals of Group IV Elements
究所

Masaaki Araidai

Nagoya University

小林伸彦

筑波大学 数理物質系
域

Nobuhiko Kobayashi University of Tsukuba

第一原理熱力学・統計力学手法を用いた不均一
触媒反応過程の研究

森川良忠

大阪大学 大学院工学研究科 精密 First-principles Thermodynamics and Statistical Mechanics
Simulations of Catalytic Reactions at Solid Surfaces
科学・応用物理学専攻

39

ドープグラフェン・水界面の第一原理分子動力学シミュレーション

大戸

達彦

大阪大学大学院基礎工学研究科

40

不均一触媒によるトルエンの可逆的水素化反応
に対する第一原理計算

中井

浩巳

41

第一原理計算を用いた微量元素添加 Nd-Fe-B 磁
石の磁気異方性解析

立津42

新しい IV 族半導体混晶に関する第一原理計算

43

健夫

物理工学

First-principles study of quantum transport in nanostructures

141

Yoshitada Morikawa

Osaka University

Ab initio molecular dynamics simulation of doped-graphene/water interfaces

Tatsuhiko Ohto

Osaka University

早稲田大学理工学術院

First-principles calculation on reversible hydrogenation
reaction of toluene using heterogeneous catalyst

Hiromi Nakai

Waseda university

慶幸

東京工業大学

Magnetic anisotropy analysis of transition-metal-doped NdFe-B magnets by first-principles calculations

Yasutomi Tatetsu

Tokyo Institute ofTechnology

黒澤昌志

名古屋大学 未来材料・システム研究所

First-Principles Study on New Group-IV Semiconductor Alloys

Masashi Kurosawa

Nagoya University

酸化物薄膜・界面における磁気安定性と輸送特性の第一原的研究

石井史之

金沢大学理工研究域数物科学系

First-principles study of magnetic stability and transport
properties in oxides thin-films and interfaces

Fumiyuki Ishii

Kanazawa University

44

機能性材料の格子欠陥近傍におけるランダム原
子構造と選択的偏析

幾原雄一

東京大学大学院工学系研究科総合 Random atomic structure and selective segregation behavioraround defects in functional ceramic materials
研究機構

Yuichi Ikuhara

The University of
Tokyo

45

電場下の金属 / 固体界面における金属原子のイオ中山
ン化・拡散の研究

隆史

千葉大学理学部物理学科

First-principles study of ionization and diffusion of metal atoms
Takashi Nakayama
at metal/solid interfaces in electric fields

Chiba University

46

イリジウム酸化物に対する第一原理フォノン計
算

中村

和磨

九州工業大学

Ab initio phonon calculations for Sr2IrO4 and Ca5Ir3O12

Kyushu Institute ofTechnology

47

アナターゼ型 TiO2 ナノクリスタルにおける余剰
泰岡
電子の安定性解明

顕治

慶應義塾大学理工学部機械工学科

The Study on the Stability of Excess Electrons in Anatase TiO2
Kenji Yasuoka
Nanocrystals48

ハイブリッド ab initio QM/MM MD 計算によるスーパーコイル DNA 構造を選択的に認識するタ 舘野
ンパク質の機能メカニズムの解明

賢Hybrid ab initio QM/MM calculations of functional
兵庫県立大学大学院生命理学研究mechanisms of biological macromolecular systems recognizing Masaru Tateno
科
supercoiled DNA

University of Hyogo49

ファン・デル・ワールス密度汎関数を用いた固体表面への分子吸着系の研究

幾太郎

大阪大学工学研究科精密科学・応 van der Waals density functional theory study of molecularadsorption on solid surfaces
用物理専攻

Osaka University

濱田

Kazuma Nakamura

Ikutaro Hamada

Keio University

142

No.

課題名

氏名

所属

ISSP Activity Report 2017

Title

Name

Organization

Development of ab initio many-body perturbation calculation
software RESPACK

Kazuma Nakamura

Kyushu Institute ofTechnology

Yuji Kunisada

Hokkaido University

50

第一原理多体摂動計算ソフトウェア RESPACK の
中村
整備

和磨

九州工業大学51

燃料電池電極触媒及び水素透過膜の省貴金属化

國貞雄治

北海道大学大学院工学研究院 附
Reduction of Rare Metals in Fuel Cell Catalysts and Hydrogen
属エネルギー・マテリアル融合領
Permeable Membrane
域研究センター

52

結晶評価法としての陽電子およびミュオン実験に関する第一原理計算

斎藤峯雄

金沢大学理工研究域数物科学系

First-Principles Calculation for Positron and Muon Experiments
Mineo Saito
as Measurements of Crystals

Kanazawa University53

表面電子ダイナミクスの第一原理計算

矢花一浩

筑波大学計算科学研究センター

First-principles calculation for surface electron dynamics

Kazuhiro Yabana

University of Tsukuba

54

Si 表面上の原子吸着系のモデル計算

服部賢

奈良先端科学技術大学院大学物質
Model calculations in Si surfaces with adsorbates
創成科学研究科

Ken Hattori

Nara Instituteof Science andTechnology

55

第一原理分子動力学法に基づくガラスの静的構
造に関する研究高良明英

熊本大学学生支援部

Ab initio molecular dynamics study of static structure ofglassesAkihide Koura

Kumamoto University56

量子井戸誘起強磁性を発現する Pd(100) における歪みを用いた磁気機能制御の研究佐藤徹哉

慶應義塾大学理工学部

Controlling magnetic properties of quantum-well induced
ferromagnetism in Pd(100) through the lattice distortion

Tetsuya Sato

Keio University

57

高圧下における玄武岩質メルトの粘性と局所構造に関する第一原理的研究

大村訓史

広島工業大学

Ab initio study of viscosity and local structures of basaltic melt
Satoshi Ohmura
under high pressure

Hiroshima Institute ofTechnology

58

第一原理計算によるエネルギーデバイス材料の電子状態解析

籾田浩義

大阪大学産業科学研究所

First-principles study of electronic structures of energy devicematerials

Hiroyoshi Momida

Osaka University

59

第一原理計算によるルチル二酸化チタン中の不
純物水素

吉澤

香奈子

高度情報科学技術研究機構

Hydrogen state in a rutile titanium dioxide by first-principles
calculation

Kanako Yoshizawa

Research Organization
for Information
Science & Technology

60

有機半導体結晶の電子構造に関する理論的研究

柳澤将

琉球大学理学部物質地球科学科物 Theoretical investigation on electronic structure of organic
semiconductor solids
理系

Susumu Yanagisawa

University of the
Ryukyus61

結晶評価法としての陽電子およびミュオン実験に関する第一原理計算

斎藤峯雄

金沢大学理工研究域数物科学系

First-Principles Calculation for Positron and Muon Experiments
Mineo Saito
as Measurements of Crystals

Kanazawa University

62

第一原理メタダイナミックス計算による CARE
加工プロセスの解明 -Pt と材料表面の間で生じる 稲垣
水分子分解とエッチング反応 -耕司

大阪大学大学院工学研究科

First-principles meta-dynamics analysis of Catalyst Referred Etching
method (analysis on dissociative adsorption of water molecule andetching reaction at interface between Pt and material surface)

Kouji Inagaki

Osaka University

63

エレクトレット荷電メカニズムの解明

鈴木雄二

東京大学大学院工学系研究科機械Study on the charge trap mechanism of electret
工学専攻

Yuji Suzuki

The University of
Tokyo

64

ナノ構造の量子伝導の第一原理計算

小林伸彦

筑波大学 数理物質系
域

Nobuhiko Kobayashi University of Tsukuba

65

豊富元素を利用した触媒の理論設計

武次

徹也

北海道大学大学院理学研究院化学
Theoretical design on catalysts with abundant elements
部門

Tetsuya Taketsugu

Hokkaido University

66

高性能フッ素ポリマーエレクトレットの開発

鈴木雄二

東京大学大学院工学系研究科機械
Development of High-performance Perfluoropolymer Electret
工学専攻

Yuji Suzuki

The University of
Tokyo

工学部

物理工学

First-principles study of quantum transport in nanostructures

ISSP Activity Report 2017

143

No.

課題名

氏名

所属

67

機能性材料粒界の原子構造および機能特性解析

幾原雄一

東京大学大学院工学系研究科総合 Study of atomic structure and properties in functional
materials
研究機構

68

還元されたアナターゼ型 TiO2 ナノクリスタルに
泰岡おける電子状態の研究

顕治

慶應義塾大学理工学部機械工学科

The study on the electronic state of reduced anatase TiO2
nanocrystal

69

第一原理計算による生物由来酸化鉄の形成機構とイオン拡散に関する研究鶴田健二

岡山大学大学院自然科学研究科

Ab-initio Study on Amorphization Dynamics and Ion Diffusion
Kenji Tsuruta
in Biogenous Iron Oxide70

燃料電池電極触媒及び水素透過膜の省貴金属化

國貞雄治

北海道大学大学院工学研究院 附
Reduction of Rare Metals in Fuel Cell Catalysts and hydrogen
属エネルギー・マテリアル融合領
permeable membrane
域研究センター

Yuji Kunisada

Hokkaido University

71

非類似性を利用したナノバイオ系の構造変化解
析

重田

育照

筑波大学大学院数理物質科学研究 Structural transition analyses on nano- and bio-systems using
dissimilarity
科

Yasuteru Shigeta

University of Tsukuba

72

第一原理計算によるグラフェン端に吸着した Pt
クラスターの研究

濱本雄治

大阪大学 大学院工学研究科 精密 First principles study of Pt clusters adsorbed on grapheneedges
科学・応用物理学専攻

Yuji Hamamoto

Osaka University73

vdW-DF + U 法による固体酸素の第一原理計算

笠松

秀輔

東京大学物性研究所

Shusuke Kasamatsu

The University of
Tokyo

74

第一原理分子動力学シミュレーションによる原
始地球における生体有機分子発生機構の解明 II

島村孝平

神戸大学大学院システム情報学研 Generation Mechanism of Organic/Biological Molecules on
Early Earth: Ab Initio Molecular Dynamics Simulation II
究科

Kohei Shimamura

Kobe University

75

固体中アト秒電子ダイナミクスの第一原理計算

篠原康

東京大学工学系研究科附属光量子 First principles simulation for attosecond electron dynamics inYasushi Shinohara
crystalline solids
科学研究センター

The University of
Tokyo

76

固体及びナノ粒子表面に吸着した分子に対する
非調和ポテンシャルの構築とその応用

水上

渉

九州大学総合理工学研究院

Construction and application of anharmonic potentials foradsorbed molecule on crystal/nanoparticle surface

Wataru Mizukami

Kyushu University77

ナノグラフェン VANG の強相関一重項が示す反
応特異性

草部

浩一

大阪大学大学院基礎工学研究科

Curious chemical reactions of the entangled singlet state innanographene VANG

Koichi Kusakabe

Osaka University

78

ペロブスカイト型鉛ハライド混晶の電子構造と状態密度に関する研究牧野哲征

福井大学大学院工学研究科

Study on electronic structures and density of states inperovskite-type lead-halide mixed crystals

Takayuki Makino

University of Fukui

79

高効率な原子層水分解光触媒の理論的探索

鈴木達夫

東京都立産業技術高等専門学校

Theoretical search for high-efficient monolayer water-splitting
photocatalysts

Tatsuo Suzuki

Tokyo Metropolitan
College of Industrial
Technology

80

プロトン伝導性固体電解質形燃料電池の材料開発とイオン伝導機構解析

大友

順一郎

東京大学大学院新領域創成科学研 Developemnt of materials of proton-conducitng solid
electrolyte fuel cells and analysis of ion conduction
究科環境システム学専攻

Junichiro Otomo

The University of
Tokyo

81

グラフェン上の有機半導体分子：界面の電子構
造と結晶成長西館

数芽

岩手大学理工学部

Organic Molecule on Graphene: Electronic Structure at theInterface and Crystal Growth

Kazume Nishidate

Iwate University

82

第一原理計算を用いた Na2 次電池の負極材料物
質の探索

小鷹

浩毅

京都大学 ESICBStructural search of negative electrode candidate for sodium
ion battery

Hiroki Kotaka

Kyoto University

83

第一原理計算に基づくマグネシウム合金の欠陥
場の解析

松中

大介

信州大学工学部機械システム工学
First-principles Study of Defects of Magnesium Alloys
科

Daisuke Matsunaka

Shinshu University

Title

First-principles calculation of solid oxygen using the vdWDF+U method

Name

Organization

Yuichi Ikuhara

The University of
Tokyo

Kenji Yasuoka

Keio University
Okayama University

144

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2017

84

照射損傷と格子間原子との相互作用の研究

大澤一人

九州大学応用力学研究所

Study of interaction between radiation damage and interstitial
atom

Kazuhito Ohsawa

Kyushu University85

固体表面・界面、微粒子の新規電子物性の探索
と実現

稲岡

毅

琉球大学理学部

Search and realization of novel electronic properties of solid
surfaces and interfaces and of small particles

Takeshi Inaoka

University of the
Ryukyus86

半導体表面界面における構造的素励起の物性の
研究

影島

博之

島根大学大学院総合理工学研究科

Study on physical properties of structural elementary
excitations of semiconductor surfaces and interfaces

Hiroyuki Kageshima

Shimane University

87

第一原理に基づく動的電子輸送シミュレーター
の開発と応用江上喜幸

北海道大学大学院工学研究院

Development and application of for time-dependent electrontransport simulator based on first-principles method

Yoshiyuki Egami

Hokkaido University

88

第一原理計算を用いた希薄窒化物半導体 InSbNのバンド構造に関する研究

藤川

紗千恵

東京電機大学工学部電気電子工学 Study of band structure for InSbN based dilute nitride
semiconductor by using first-principle simulation
科

Sachie Fujikwa

Tokyo denki university

89

遷移金属ポルフィリン誘導体超薄膜のスピン配列と振動分光の密度汎関数法による解析

首藤健一

横浜国立大学・工学部

Theoritical analysis of vibronic mode and spin ordering of thin
Ken-Ichi Shudo
film of transition metallated porphyrin-derivative

Yokohama Nat'l
University

90

新規半導体 2 次元構造の探索

ハシュミ
ルカム

筑波大学計算科学研究センター

Discovery of new 2D semiconductors

Arqum Hashmi

University of Tsukuba

91

第一原理に基づく動的電子輸送シミュレーター
の開発と応用江上喜幸

北海道大学大学院工学研究院

Development and application of time-dependent electrontransport simulator based on first-principles method

Yoshiyuki Egami

Hokkaido University

92

アナターゼ型 TiO2 ナノクリスタルにおける形状
泰岡
依存性に関する研究

顕治

慶應義塾大学理工学部機械工学科

The Study on the Morphology Dependence of Anatase
Nanocrystals

Kenji Yasuoka

Keio University

93

軽希土類永久磁石材料の電子状態

赤井久純

東京大学物性研究所

Electronic structure of light rare earth permanent magnets

Hisazumi Akai

The University of
Tokyo

94

電子デバイスのための自己組織化ナノインター
フェイスの理論

レービガー
ハンネス

横浜国立大学 大学院工学研究院
Theory of self-organized nano-interfaces for electronic devices Hannes Raebiger
物理工学コース

95

第一原理的アプローチによる超伝導の解析

池田浩章

立命館大学理工学部物理科学科

Analysis of superconductivity based on a first-principles
approach

Hiroaki Ikeda

96

多体電子論に基づく第一原理有効模型導出シス
テムの構築

榊原

寛史

鳥取大学大学院工学研究科

Study on a automatic derivation technique of first-principles
effective model based on the many body electron theory

Hirofumi Sakakibara Tottori University

97

固体表面に吸着した磁性分子の構造と電子状態

高木紀明

東京大学新領域創成科学研究科物 Geometric and electronic structures of magnetic molecules atsurfaces
質系専攻

Noriaki Takagi

The University of
Tokyo

98

第一原理的アプローチによる高温超伝導体の探
索

池田

浩章

立命館大学理工学部物理科学科

Search for high-temperature superconductors based on a firstprinciples approach

Hiroaki Ikeda

Ritsumeikan
University

99

第一原理計算によるネオジム磁石結晶のアモル
ファス粒界相の形成過程および磁気特性解析

寺澤麻子

東京工業大学First-principles simulation of magnetism and formation of
amorphous grain boundary phase of Nd-based permanent
magnets

Asako Terasawa

Tokyo Institute ofTechnology

100

第一原理計算による高温高圧水中の多価アルコールの脱水過程の研究

佐々木Takehiko Sasaki

The University of
Tokyo

ア

岳彦

東京大学大学院新領域創成科学研 Dehydration process of polyalcohol in hot pressurized waterstudied by First Principles Calculations
究科

Yokohama National
University
Ritsumeikan
University

No.

課題名

101 Si 表面上の原子吸着系のモデル計算
102

金属酸化物物性の第一原理計算と触媒活性のマ
テリアルズインフォマティクスアプローチ

所属

Title

Name

Nara Instituteof Science andTechnology

Masayuki Toyoda

Tokyo Institute ofTechnology

東京大学新領域創成科学研究科物 Geometric and electronic structures of two-dimensional
atomic-layered materials
質系専攻

Noriaki Takagi

The University ofTokyo

Materials informatics approach for catalysts' activities and東京大学大学院新領域創成科学研
properties of metal oxides obtained by First Principles
究科
Calculations

Takehiko Sasaki

The University ofTokyo

奈良先端科学技術大学院大学物質
Model calculations in Si surfaces with adsorbates
創成科学研究科雅之東京工業大学理学院物理学系

紀明

高木
佐々木

岳彦

Organization

Ken Hattori

賢

服部

同位体超格子や結晶多形超格子によるバンド・ギ
豊田ャップの制御103 2 次元単原子層物質の構造と電子状態
104

氏名Band-gap engineering by forming isotope superlattices andpolytypic superlattices

105 有機分子の炭化反応と電子状態の計算

島田敏宏

北海道大学大学院工学研究院

Carbonization reaction of organic molecules and electronic
structures of the products

Toshihiro Shimada

Hokkaido University

106 プルシャンブルー類似体の基底構造の探索

日沼洋陽

千葉大学先進科学センター

Finding the ground state of prussian blue derivatives

Yoyo Hinuma

Chiba University

107

第一原理計算を用いたセミクラスレートハイド
レートの相平衡条件の計算

平塚

将起

工学院大学機械工学科

ab initio calculations to determine the phase equilibrium
conditions of semiclathrate hydrates

Masaki Hiratsuka

Kogakuin University

108

酸化物 / 貴金属界面におけるラシュバ効果の第一
石井
原理計算

史之

金沢大学理工研究域数物科学系

First-principles calculation of Rashba effect at
metal interfaces

Fumiyuki Ishii

Kanazawa University

赤井久純

東京大学物性研究所

Electronic structure of light rare earth permanent magnets

Hisazumi Akai

The University ofTokyo

Ab initio calculations for superlattices composed of siliconclusters containing more than 300 atoms

Nozomi Orita

National Institute ofAdvanced Industrial
Science and Technology

Yoshitaka Fujimoto

Department of Physics,
Tokyo Institute ofTechnology

109 軽希土類永久磁石材料の電子状態

oxides/noble-

ISSP Activity Report 2017110

300 超の原子数のシリコンクラスターによる超格子構造に対する第一原理計算

織田望

産業技術総合研究所

111

第一原理計算による原子膜物質の原子構造・安定性・電子物性の解明

藤本義隆

東京工業大学大学院理工学研究科 First-principles study of atomic structures, stabilities, andelectronic properties of atomic-layered materials
物性物理学専攻

第１原理運動量依存変分理論に基づく鉄族強磁
112 性金属の運動量分布関数と準粒子状態の定量的研究
混合アニオン層状化合物の仕事関数に関する研
究

梯

祥郎

琉球大学理学部物理系

Quantitative Calculations of Momentum Distribution Function andQuasiparticle State in Ferromagnetic Transition Metals and Compounds
Yoshiro Kakehashi
Based on the First-Principles Momentum Dependent Local Ansatz Theory

University of the
Ryukyus

145

神原

陽一

慶應義塾大学理工学部物理情報工 Research on work functions of mixed anion layered
compounds
学科

Yoichi Kamihara

Keio University

114 新たなナノスケール界面の電子物性の探索小林功佳

お茶の水女子大学理学部物理学科 Search for electronic properties of new nanoscale interfaces

Katsuyoshi
Kobayashi

Ochanomizu
University

115 第一原理計算による電気化学材料の設計佐藤幸生

九州大学大学院工学研究院材料工 Computational Design of Electrochromic Materials through ab
Yukio Sato
initio DFT Simulation
学部門

Kyushu University

DNA のスーパーコイル構造を選択的に認識する
116 ペプチドの熱力学的物性と動力学構造の統計力 舘野
学的解析

賢

兵庫県立大学大学院生命理学研究 Statistical thermodynamic analysis of selective bindingmechanism of supercoiled DNA recognition (SDR) peptide科

Masaru Tateno

University of Hyogo

ペロブスカイト型鉛ハライド混晶の光吸収特性に関する研究哲征

福井大学大学院工学研究科

Takayuki Makino

University of Fukui

113

117

牧野

Study on optical properties in perovskite-type lead-dihalide
mixed crystals

146

No.

課題名

氏名

所属

Title
First principles calculations of heat capacity of thermoelectricmaterials

ISSP Activity Report 2017

Name

Organization

Yoyo Hinuma

Chiba University

Ryota Akiyama

The University ofTokyo

118 熱電変換材料の第一原理比熱計算

日沼洋陽

千葉大学先進科学センター

119 表面構造におけるバンド計算秋山

了太

東京大学理学系研究科物理学専攻 The band calculations of the surface structure

高志

福岡工業大学

Database construction for activation and reaction of small
molecules on solid surfaces

Takashi Kamachi

Fukuoka Institute ofTechnology

北海道大学 触媒科学研究所

Calculation of catalyst electronic structures for catalyst
informatics

Takashi Toyao

Hokkaido University

Masatoshi Imada

The University of
Tokyo

120

固体表面上での小分子活性化、および素反応データベースの構築

蒲池

121

触媒インフォマティクス構築に向けた固体触媒の電子状態計算鳥屋尾隆

2. 強相関 / Strongly Correlated Quantum Systems
122

ペロブスカイト遷移金属酸化物 SrRuO3 における
今田
磁気異方性と量子異常ホール効果の研究

正俊

Numerical Studies on Magnetic Anisotropy and Quantum
東京大学工学系研究科物理工学専
Anomalous Hall Effect in Perovskite Transition Metal Oxide
攻
SrRuO3123

多変数変分モンテカルロ法を用いた強相関トポ
ロジカル物質の研究

三澤貴宏

東京大学物性研究所

Takahiro Misawa

The University of
Tokyo

124

多体量子系のソルバーとしての深層学習を用いたニューラル・ネットワーク法の開発

今田正俊

東京大学工学系研究科物理工学専 Development of neural network method with deep learning as
Masatoshi Imadaa solver for many-body quantum systems
攻The University of
Tokyo

125

強いスピン軌道相互作用を有する相関電子系の
数値的研究

求

126

多軌道強相関物質におけるフント結合がもたらす非局所相関野村

127

強相関系におけるトポロジカル物質開拓とトポ
ロジカル相転移川上

128

強いスピン軌道相互作用を有する相関電子系の
数値的研究

求

129

多サイト・多軌道系のリアリスティックな電子状態を考慮した電子相関と超伝導に関する研究

黒木

130

軌道自由度を有する強相関電子系における新奇量子状態の数値解析

131 2 チャンネル近藤効果と多極子感受率

Study of correlated topological materials using many-variablevariational Monte Carlo method

東京大学大学院工学系研究科

Numerical study of correlated electron systems with strong
spin-orbit coupling

Yukitoshi Motome

The University of
Tokyo

悠祐

東京大学大学院

Non-local correlations induced by Hund's coupling in multiorbital strongly-correlated materials

Yusuke Nomura

The University of
Tokyo

則雄

京都大学大学院理学研究科物理学 Pursuit of topologically nontrivial materials and topologicalphase transition in strongly correlated quantum systems
宇宙物理学専攻

Norio Kawakami

Kyoto University

東京大学大学院工学系研究科

Numerical study of correlated electron systems with strong
spin-orbit coupling

Yukitoshi Motome

The University of
Tokyo

和彦

大阪大学

Study on correlation and superconductivity in multiorbital/
multi-site systems based on realistic electronic structures

Kazuhiko Kuroki

Osaka University

古賀昌久

東京工業大学

Numerical analysis for extotic quantum states in strongly
correlated electron systems

Akihisa Koga

Tokyo Institute ofTechnology

堀田貴嗣

首都大学東京理工学研究科物理学
Two-channel Kondo effect and multipole susceptibility
専攻

Takashi Hotta

Tokyo Metropolitan
University

幸年

幸年

物理工学専攻132

強相関系におけるトポロジカル輸送と非平衡現
象

川上

則雄

京都大学大学院理学研究科物理学 Topological transport and nonequilibrium phenomena instrongly correlated quantum systems
宇宙物理学専攻

Norio Kawakami

Kyoto University

133

ハバード模型におけるストライプ秩序と電子格子相互作用の関係の数値的研究

大越孝洋

東京大学大学院工学系研究科物理 Numerical study on interplay of stripes and electron-phonon
interactions in the Hubbard model
工学専攻

Takahiro Ohgoe

The University of
Tokyo

No.

課題名

134

量子モンテカルロ法による非従来型超伝導体の局所電子相関の研究

135 トポロジーと強相関効果が創発する異常物性
136

多軌道強相関系における新奇量子相の熱揺らぎの効果

137 Cd2Os2O7 における強相関効果の理論研究

氏名

所属

Title

Name

Organization

星野

晋太郎

埼玉大学

Quantum Monte Carlo approach to local electronic correlations
Shintaro Hoshinoin unconventional superconductors

Saitama University

吉田恒也

京都大学理学研究科

Exotic phenomena induced by topology and strong correlations Tsuneya Yoshida

RIKEN

古賀

昌久

東京工業大学

Effect of thermal fluctuation for exotic quantum phases instrongly correlated multiorbital systems

Akihisa Koga

Tokyo Institute ofTechnology

品岡寛

埼玉大学理学部物理学科

Theoretical study of strong correlations in Cd2Os2O7

Hiroshi Shinaoka

Saitama University

138

動的平均場近似に基づく強相関電子系化合物の電子状態および多極子揺らぎ

大槻純也

東北大学大学院理学研究科

Dynamical mean-field calculations of electronic states andmultipolar fluctuations in strongly correlated electron systems

Junya Otsuki

Tohoku University

139

スピン軌道相互作用を有する遍歴磁性体におけるスキルミオン結晶相

速水賢

北海道大学理学部物理学科

Skyrmion crystal phase in itinerant magnets with spin-orbit
coupling

Satoru Hayami

Hokkaido University

140

FLEX-S 近似を用いた銅酸化物高温超伝導体にお北ける微視的な解析

孝文

北海道大学理学部物理学科

Microscopic analysis of cuprate superconductors in FLEX-S
approximation

Takafumi Kita

Hokkaido University

フィリング・エンフォースト量子バンド絶縁体
141 を始めとする空間群対称性に基づく新奇量子物
質の設計と評価

押川正毅

東京大学物性研究所

Designing novel quantum materials based on space group
Masaki Oshikawa
symmetries, including filling-enforced quantum band insulators

The University ofTokyo

142 強相関トポロジカル系における新奇物性吉田恒也

京都大学理学研究科

Exotic properties in strongly correlated topological systems

Tsuneya Yoshida

RIKEN
Department of
Physics, Chiba
University

ISSP Activity Report 2017

143

ハバードモデルにおける超伝導及び磁性状態の
研究

山田

篤志

千葉大学理学研究科

Superconductivity and magnetic properties of the Hubbard
model

Atsushi Yamada

144

複合電子系における電子状態と過渡ダイナミク
ス

石原

純夫

東北大学大学院理学研究科

Electronic state and transient dynamics in complex electronicsystems

Sumio Ishihara

石原純夫

東北大学大学院理学研究科

Transient Quantum Dynamics in Complex Many Electron
Systems

Sumio Ishihara

145 複合多体電子系の過渡量子ダイナミクス

Department of
Physics, Tohoku
University
Department of
Physics, Tohoku
University

147

146

最適化量子モンテカルロ法および第一原理計算
による強相関系の研究柳沢孝

産業技術総合研究所

Optimized Monte Carlo method and first-principles calculations
Takashi Yanagisawa
in strongly correlated electron systems

National Institute ofAdvanced Industrial
Science andTechnology147

電荷自由度を有する強相関電子系の超伝導・磁性・電荷秩序渡部洋

早稲田大学高等研究所

Superconductivity, magnetism, and charge order in strongly
correlated electron system with charge degree of freedom

Hiroshi Watanabe

Waseda Institute forAdvanced Study148

量子モンテカルロ法と第一原理計算による強相
関電子系の研究柳沢孝

産業技術総合研究所

Quantum Monte Carlo and first-principles study of strongly
correlated electron systems

Takashi Yanagisawa

National Institute ofAdvanced Industrial
Science andTechnology

149

くりこみ群法によるスピン・電荷・軌道結合系
の解析

土射津

奈良女子大学研究院自然科学系

Renormalization-group analysis on spin-charge-orbital coupled
Masahisa Tsuchiizu
systems

Nara Women's
University

東京大学総合文化研究科

Analysis on a series of transverse Ising models

The University ofTokyo

150 横磁場イジングモデルの解析

堀田

昌久

知佐

Chisa Hotta

148

No.

課題名

氏名

所属

Title

Name

Organization

3. 巨視系の協同現象 / Cooperative Phenomena in Complex, Macroscopic Systems

ISSP Activity Report 2017151

連続空間および離散空間量子モンテカルロ法によるヘリウム系有効モデルの決定川島直輝

東京大学物性研究所

152

光とフォノンの協奏による強相関系での非平衡
高温超伝導の発現

今田正俊

東京大学工学系研究科物理工学専 Nonequilibrium superconductivity emerging from synergistic
effects of light and phonons in strongly correlated systems
攻

岡本

祐幸

名古屋大学大学院理学研究科

153 拡張アンサブル法による複雑系の研究

Effective Model Through Continuous and Descrete Space
Quantum Monte Carlo Simulations

高分子材料の破壊と補強に関する粗視化 MD シ
ミュレーション

萩田克美

防衛大学校応用科学群応用物理学 Coarse grained MD simulation for fracture and reinforcementof polymer materials
科155

連続空間および離散空間量子モンテカルロ法によるヘリウム系有効モデルの決定川島直輝

東京大学物性研究所

156

量子スピン液体における励起スペクトルの数値
的研究

山地

洋平

松川

158

ハニカム格子上の多軌道模型におけるスピン軌
道相互作用の効果

古賀

159

ガラス形成液体に潜んだ不均一的ダイナミクス
の原理解明

金

The University ofTokyo

Masatoshi Imada

The University ofTokyo

Study on complex systems by generalized-ensemble algorithms Yuko Okamoto

154

157 摩擦の科学

Naoki Kawashima

Nagoya University

Katsumi Hagita

National Defense
AcademyNaoki Kawashima

The University ofTokyo

東京大学大学院工学系研究科物理 Numerical Studies on Excitation Spectra of Quantum Spin
Liquids
工学専攻

Youhei Yamaji

The University of
Tokyo

宏

青山学院大学理工学部

Science of Friction

Hiroshi Matsukawa

Aoyama Gakuin
University

昌久

東京工業大学

Effect of the spin-orbit coupling in the multiorbital model on
the honeycomb lattice

Akihisa Koga

Tokyo Institute ofTechnology

大阪大学大学院基礎工学研究科

Elucidation of heterogeneous dynamics hidden in glassforming liquids

Kang Kim

Osaka University

Hisashi Okumura

Institute for Molecular
Science

鋼

Effective Model Through Continuous and Descrete Space
Quantum Monte Carlo Simulations

親水性 / 疎水性溶液界面におけるアミロイドベー
160 タペプチド凝集機構を解明する分子動力学シミ 奥村ュレーション久士

Molecular dynamics simulations to reveal aggregation
分子科学研究所計算科学研究セン
mechanism of amyloid-beta peptides at a hydrophilic/
ターhydrophobic interface

蛋白質物性に強く関与するソフトモードの効率的サンプリングシミュレーション

北尾

彰朗

東京工業大学生命理工学院

Efficient sampling simulation of the soft modes significantly
contribute to protein properties

Akio Kitao

The University of
Tokyo

原田

健自

京都大学大学院情報学研究科

Numerical study of non-equilibrium systems

Kenji Harada

Kyoto University

161

162 非平衡系の数値的研究
163

定量的粗視化分子モデリングによるマクロ分子
自己集合体の物性解析

篠田

渉

名古屋大学大学院工学研究科

Physical Property Analysis of Macromolecular Self-Assembly
using Quantitative Coarse-Grained Molecular Model

Wataru Shinoda

Nagoya University

164

分子動力学法を用いた希薄高分子溶液の流れ解
析

野口

博司

東京大学物性研究所

Flow analysis of dilute polymer solution by molecular
dynamics simulation

Hiroshi Noguchi

The University of
Tokyo

大槻

東巳

上智大学理工学部

Phase diagrams of random topological matters

Tomi Ohtsuki

Sophia University

塩見

淳一郎

東京大学工学系研究科

Screening for Thermal Functional Materials using Materials
Informatics

Junichiro Shiomi

The University ofTokyo

165 ランダムなトポロジカル物質の相図
166

マテリアルズ・インフォマティクスによる熱機
能材料の探索

No.

課題名

氏名

ローレンツ力とコプニン力、状態密度の傾きを
167 含む拡張準古典方程式を用いた超伝導渦状態の
微視的解析

北

168 フラストレート磁性体における新奇秩序

川村

所属

Title

Name

Organization

北海道大学理学部物理学科

Microscopic analysis of the vortex state in superconductors
using the augmented quasiclassical equations with the Lorentz Takafumi Kita
force, Kopnin force and slope in the density of state

Hokkaido University

光

大阪大学理学研究科

Novel order in frustrated magnets

Hikaru Kawamura

Osaka University

Synge Todo

The University of
Tokyo

孝文

169

統計的機械学習によるモデル推定と臨界現象解
析

藤堂

眞治

東京大学大学院理学系研究科物理 Model Estimation and Critical Phenomena Analysis by
Statistical Machine Learning
学専攻

170

エンドポイント法を用いたアポプラストシアニ
ン折り畳みに伴う熱力学量変化の定量的計算

吉留崇

東北大学大学院工学研究科

Accurate computation of the free-energy change of
apoplastocyanin using the end-points method

Takashi Yoshidome

Tohoku University

171

蜂の巣格子上 SU(N) ハイゼンベルク模型の基底
状態相図

鈴木

隆史

兵庫県立大学大学院工学研究科

Ground state phase diagram of SU(N) Heisenberg model on ahoneycomb lattice

Takafumi Suzuki

University of Hyogo

野口博司

東京大学物性研究所

Structure formation of biomembranes

Hiroshi Noguchi

University of Tokyo

Direct numerical method for quantum response and quantum
dynamics

Seiji Miyashita

The University ofTokyo

Takami Tohyama

Tokyo University of
Science

Hiroshi Watanabe

The University ofTokyo

172 生体膜の構造形成

ISSP Activity Report 2017173

量子応答、量子ダイナミクスの数値計算法の開
発

宮下

精二

東京大学理学系研究科物理学専攻

174

密度行列繰り込み群法によるフラストレート量
子スピン系の研究遠山貴己

東京理科大学理学部応用物理学科 DMRG study of frustrated quantum spin systems

175

不純物を含む液体における気泡核生成現象の分子動力学計算渡辺宙志

東京大学物性研究所

176

古典・量子フラストレートスピン系における新規秩序の探索大久保

177

インターカレートした FeSe の電子構造及び超伝 Jeschke
Harald導の圧力依存性

岡山大学異分野基礎科学研究所

178

トポロジカル相におけるバルク・エッジ対応の数値的研究

179 非閉じ込め量子臨界における創発粒子

東京大学大学院理学系研究科物理
Novel phases in classical and quantum frustrated spin systems Tsuyoshi Okubo
学専攻
Pressure dependence of electronic structure andsuperconductivity in intercalated FeSe

The University of
Tokyo

Harald Jeschke

Research Institute forInterdisciplinary Science
Okayama University

初貝安弘

筑波大学大学院数理物質科学研究 Numerical studies of bulk-edge correspondence in topologicalphases
科物理学専攻Yasuhiro Hatsugai

University of Tsukuba

諏訪秀麿

東京大学大学院理学系研究科物理
Emergent Particles at Deconfined Quantum Criticality
学専攻

Hidemaro Suwa

The University of
Tokyo

紙屋

佳知

理研

Quantum Monte Carlo study of Majorana Qubits at the surface
Yoshitomo Kamiya
of topological insulators

RIKEN

東北大学金属材料研究所

Exploring nano-structured phases in imidazolium-based ionicliquid and water mixtures

Hailong Peng

Tohoku University

180

トポロジカル絶縁体表面上のマヨラナフェルミ
オン格子の量子モンテカルロシミュレーション

181

イミダゾリウム系イオン液体 - 水混合系における彭
ナノ構造相の探求

182

格子の自由度と結合した量子スピン系におけるランダムネスの効果 II

149

183 フラストレート磁性体における新奇秩序

毅Molecular dynamics study of impurity effect on bubble
nucleation

海龍

安田

千寿

琉球大学理学部

Randomness Effects on Quantum Spin Systems Coupled toLattice Degrees of Freedom II

Chitoshi Yasuda

University of the
Ryukyus川村光

大阪大学理学研究科

Novel order in frustrated magnets

Hikaru Kawamura

Osaka University

150
ISSP Activity Report 2017

No.

課題名

氏名

所属

184

大規模粗視化分子動力学法による結晶性高分子の変形と破壊のダイナミクス

樋口祐次

東京大学物性研究所

185

SU(N) スピンで記述される２次元一般化
Heisenberg 模型の基底状態相図

鈴木隆史

兵庫県立大学186

シェル・モデルを用いた強誘電体の分子動力学
シミュレーション III

橋本

保
浩樹

前駆体クラスター形成を経由したヒドロキシア
187 パタイト結晶核生成機構の分子動力学シミュレーション研究

灘

Title

Name

Organization

Deformation and fracture dynamics of crystalline polymers bylarge-scale coarse-grained molecular dynamics simulation

Yuji Higuchi

The University ofTokyo

Ground state phase diagrams of 2D generalized Heisenberg
models for SU(N) spins

Takafumi Suzuki

University of Hyogo

産業技術総合研究所

Molecular dynamics simulation of ferroelectrics using a shellmodel III

Tamotsu Hashimoto

National Institute ofAdvanced Industrial
Science and Technology

産業技術総合研究所

Molecular Dynamics Simulation Study of Crystal Nucleation
Mechanism of Hydroxyapatite via Formation of Pre-Nucleation Hiroki Nada
Clusters

大学院工学研究科

National Institute ofAdvanced Industrial
Science and Technology

188

動的スケーリング解析の改良とトポロジカル相転移系への応用

尾関之康

電気通信大学情報理工学研究科

Improvement for dynamical scaling analysis and its
applications to topoligical phase transitions

Yukiyasu Ozeki

189

並列化量子モンテカルロ法の開発と２次元量子格子系の研究正木晶子

理化学研究所

The development of the parallelizable Quantum Monte Carlo
method and the application to two-dimensional quantum
lattice systems

The University
of ElectroCommunications

Akiko Masaki-Kato

RIKEN

190 原子スケール模型による磁化反転過程の解析

檜原太一

東京大学理学系研究科

Analysis of magnetization reversal process based on atomistic
modelsTaichi Hinokihara

The University ofTokyo

191 二次元量子スピン系の励起ダイナミクス

正木晶子

理化学研究所

Excitation dynamics of two-dimensional quantum spin systems Akiko Masaki-Kato

RIKEN

192

カイラルらせん磁性体の有限サイズ効果とヒス
テリシス

加藤

雄介

東京大学総合文化研究科広域科学
Finite-size effect and hysteresis in chiral helimagnets
専攻相関基礎科学系

Yusuke KatoThe University of
Tokyo

193

フラストレート量子スピン鎖の磁気励起とスピ
ン伝導

大西

弘明

日本原子力研究開発機構 先端基礎研究センター

Magnetic excitation and spin transport in frustrated quantum
spin chain

Hiroaki Onishi

Japan Atomic Energy
Agency194

格子の自由度と結合した量子スピン系におけるランダムネスの効果

安田千寿

琉球大学理学部

Randomness Effects on Quantum Spin Systems Coupled toLattice Degrees of Freedom

Chitoshi Yasuda

University of Ryukyus

195

次近接相互作用を取り入れたカイラルらせん磁性体モデルの物性加藤雄介

東京大学総合文化研究科広域科学 Physical properties of the chiral helimagnet with next-nearestYusuke Katoneighbor interaction
専攻相関基礎科学系

福島孝治

東京大学大学院総合文化研究科

Statistical-mechanical study of phase transition andcooperative phenomena

The effect of bond-randomness on the quantum magnetisms inTokuro Shimokawa
low dimension

196 相転移・協力現象の統計力学的研究

Koji Hukushima

The University ofTokyo
The University of
Tokyo
Okinawa Institute of
Science and Technology
Graduate University

197

低次元量子磁性体に対するボンドランダムネス
の効果

下川

統久朗

沖縄科学技術大学院大学

198

フラストレーション系のスピンギャップの数値
対角化による研究坂井徹

兵庫県立大学大学院物質理学研究 Numerical Diagonalization Study on the Spin Gap of Frustrated
Toru Sakai
Systems
科

University of Hyogo

199

古典・量子フラストレートスピン系における新規秩序の探索大久保

東京大学大学院理学系研究科
理学専攻

The University of
Tokyo

200

量子スピン系の低エネルギー状態に関する数値
的研究

中野

毅
博生

物

Novel phases in classical and quantum frustrated spin systems Tsuyoshi Okubo

兵庫県立大学大学院物質理学研究
Numerical study on low-energy states of quantum spin systems Hiroki Nakano
科University of Hyogo

No.

課題名

氏名

所属

Title

201

電極と接して電気二重層を形成する電解質液体の構造化とダイナミクスの解析福井賢一

大阪大学大学院基礎工学研究科

Analysis on Structuring and Dynamics of Electrolyte Solutions
Forming Electric Double Layer at Electrode Interfaces202

量子スピン系の低エネルギー状態に関する数値
的研究

中野

博生

兵庫県立大学大学院物質理学研究
Numerical study on low-energy states of quantum spin systems Hiroki Nakano
科University of Hyogo

203

低次元量子スピン系におけるスピンフロップ現象の数値的研究坂井徹

兵庫県立大学大学院物質理学研究 Numerical Study on Spin Flop Phenomena in Low-Dimensional
Toru Sakai
Quantum Spin Systems
科

University of Hyogo渕崎

員弘

愛媛大学理工学研究科

Melting phenomena and polyamorphism

Kazuhiro Fuchizaki

Ehime University

204 融解現象とポリアモルフィズム

Name

Organization

Ken-Ichi Fukui

Osaka University

205

動的スケーリング解析の改良とトポロジカル相転移への応用 II

尾関之康

電気通信大学情報理工学研究科

Improvement for dynamical scaling analysis and its
applications to topological phase transitions II

Yukiyasu Ozeki

The University
of ElectroCommunications

206

フラストレートハニカム磁性体における多重 Q
秩序相

下川

統久朗

沖縄科学技術大学院大学

Multiple-Q states of the frustrated Heisenberg model on thehoneycomb lattice

Tokuro Shimokawa

Okinawa Institute of
Science and Technology
Graduate University

207

活性点の制御されたゼオライト合成のための有機構造規定剤の設計

大久保東京大学大学院工学系研究科化学 Design of organic structure-directing agents for the synthesisof zeolites with controlled active sites
システム工学専攻

Tatsuya Okubo

The University of
Tokyo

達也

渕崎

員弘

愛媛大学理工学研究科

Melting phenomena and polyamorphism

Kazuhiro Fuchizaki

Department of
Physics, Ehime
University

物質・材料科学の知見を事前分布で表す方法の
開発

田村

亮

国立研究開発法人 物質・材料研
究機構

Development of a method to express the knowledge inmaterials science as prior distribution

Ryo Tamura

National Institute forMaterials Science

210 情報科学的手法による有効モデル推定の高速化

田村亮

国立研究開発法人 物質・材料研
究機構

Acceleration of the effective model estimation by techniques
in informa- tion science

Ryo Tamura

National Institute forMaterials Science

211 孤立量子多体スピン系のダイナミクス

森

東京大学理学部物理学科

Dynamics of isolated quantum many-body spin systems

Takashi Mori

The University of
Tokyo

一匡

首都大学東京XY model on a diamond lattice: effects of frustration

Kazumasa HattoriTokyo Metropolitan
University
Waseda University

208 融解現象とポリアモルフィズム
209

ISSP Activity Report 2017212

ダイアモンド格子上の XY 模型：フラストレーシ
服部
ョンの効果

貴司

213 量子アニーリングを用いた機械学習

田中宗

早稲田大学 高等研究所

Machine Learning by Using Quantum Annealing

Shu Tanaka

214 バネ・ビーズ鎖におけるガラス状態の解析

村島隆浩

東北大学大学院理学研究科

Analysis of Glassy State of Bead-Spring Chains

Takahiro Murashima Tohoku University

大西弘明

日本原子力研究開発機構 先端基礎研究センター

Magneto-thermal effect in spin nematic state of frustrated
ferromagnetic chain

Hiroaki Onishi

Japan Atomic Energy
Agency松下勝義

大阪大学理学研究科

Investigation of Cell Elongation Effect on Collective Motion

Katsuyoshi
Matsushita

Osaka University

水口朋子

京都工芸繊維大学

Effect of interface on the structure and properties of water
confined in nanopore

Tomoko Mizuguchi

Kyoto Institute ofTechnology

215

フラストレート強磁性鎖のスピンネマティック
状態における磁気熱効果

216 細胞伸長とその集団運動への影響の解明

151

217

細孔内に閉じ込められた水の構造と物性に対する界面の影響の解明

152

No.

課題名

218

長距離相互作用行列の低ランク近似を用いたモ
ンテカルロシミュレーション

ISSP Activity Report 2017219 細胞の伸長誘起動的転移の数値的研究
220

ソフトマテリアルの秩序構造とその光学的性質の計算

221 テトラヒドラル液体の構造とダイナミクス
空間構造をもつ一次元量子スピン系の数値的研
究

氏名
五十嵐

亮

所属

Title

Name

Organization

東京大学情報基盤センター

Monte Carlo simulation using low-rank approximation to longRyo Igarashi
range interaction matrices

The University of
Tokyo

松下

勝義

大阪大学理学研究科

Numerical study of cell-elongation inducing dynamicaltransition

Katsuyoshi
Matsushita

Osaka University福田順一

九州大学大学院理学研究院

Calculation of ordered structures and their optical properties
of soft materials

Jun-Ichi Fukuda

Kyushu University

田中

肇

東京大学生産技術研究所

Structure and dynamics of tetrahedral liquids

Hajime Tanaka

The University ofTokyo

Takashi Tonegawa

Kobe University

利根川孝

神戸大学大学院理学研究科

Numerical Study of the One-Dimensional Quantum Spin
Systems with Spatial Structures

223 孤立量子系の熱化に関する数値的研究

伊與田

英輝

東京大学工学系研究科

Numerical study of thermalization in isolated quantum systems Eiki Iyoda

The University ofTokyo

224 量子アニーリングを用いた行列分解

田中宗

早稲田大学 高等研究所

Matrix Factorization by Using Quantum Annealing

Shu Tanaka

Waseda University

222

225

ソフトマテリアルの秩序構造とその光学的性質
の計算

福田

順一

九州大学大学院理学研究院

Calculation of ordered structures and their optical properties
of soft materials

Jun-Ichi Fukuda

Kyushu University

226

対称性のあるテンソルネットワーク法の並列計
算ライブラリ開発

森田悟史

東京大学物性研究所

Development of parallel computing library for tensor network
methods with symmetries

Satoshi Morita

The University of
Tokyo

川村

光

大阪大学理学研究科

Numerical simulations on statistical models of earthquakes

Hikaru Kawamura

Osaka University

コロイド分散系のゲル化における運動量保存則
起源の有限サイズ効果の解明

田中肇

東京大学生産技術研究所

Study of finite-size effects on colloidal gelation originating from
Hajime Tanaka
momentum conservation

The University ofTokyo

マニフォールド理論とマルコフ状態モデルの協229 奏によるタンパク質へのリガンド結合・解離過
程の解明

吉留

崇

東北大学大学院工学研究科

Elucidation of binding and unbinding processes of a ligand
to a protein using a hybrid of the manifold theory and theMarkov state model

Takashi Yoshidome

Tohoku University

230 輸送現象と光トモグラフィー

町田学

浜松医科大学フォトニクス医学研
Transport phenomena and optical tomography
究部

Manabu Machida

Hamamatsu University
School of Medicine

231 実空間構造によるトポロジカル状態の操作

苅宿

俊風

物材機構

Toshikaze Kariyado

NIMS

227 地震の統計モデルの数値シミュレーション
228

Manipulation of Topological States by Real-Space Structure232

環動ゲルネットワークの粗視化分子動力学シミュレーション

眞弓

皓一

東京大学大学院新領域創成科学研 Coarse-Grained Molecular Dynamics Simulation of Slide-RingGel Networks
究科物質系専攻

Koichi Mayumi

The University of
Tokyo

233

混合溶媒中の高分子電解質のコンフォメーショ
ン・凝集構造荒木武昭

京都大学大学院理学研究科物理学・宇宙物理学専攻

Conformational changes of polyelectrolyte chains in solvent
mixtures

Takeaki Araki

Kyoto University

寺尾貴道

岐阜大学工学部

Molecular simulation of colloidal crystals

Takamichi Terao

Gifu University

234 コロイド結晶に関する分子シミュレーション

No.

課題名

235

生物発光関連分子およびその類似体の励起状態
研究

樋山

みやび

群馬大学

Theoretical study for excited states of bioluminescence related
Miyabi Hiyama
molecules

Gunma University236

強誘電―反強誘電相転移を利用した巨大応答と
交差応答

高江

恭平

東京大学生産技術研究所

Giant and cross response with ferroelectric--antiferroelectricphase transitions

Kyohei Takae

The University of
Tokyo

中原

明生

日本大学理工学部（物理）

Numerical simulation for memory of flow in paste

Akio Nakahara

Nihon University

礒部

雅晴

名古屋工業大学

Nonequilibirum phase transition and shock wave phenomenain the dense hard sphere systems

Masaharu Isobe

Nagoya Institute ofTechnology

石田邦夫

宇都宮大学大学院工学研究科

Study of the initial process of THz-light induced structuralchangeKunio Ishida

Utsunomiya
University

Naoya Arakawa

RIKEN

Munehito Arai

The University ofTokyo
Hamamatsu University
School of Medicine

237 ペーストの流れの記憶の数値実験
238

高密剛体球系における非平衡相転移と衝撃波現象

239 THz 光誘起構造変化初期過程の理論研究

氏名

所属

Title

一般教育教室Name

240

３次元カイラル磁性体のマグノン物性の微視的
理論

荒川

直也

理化学研究所創発物性科学研究セ Microscopic theory of magnon physics in a three-dimensional
chiral magnet
ンター

241

再生医療に必要な生理活性タンパク質のフォー
ルディング反応機構の解析

新井宗仁

東京大学大学院総合文化研究科

242 有限差分法・有限要素法による輻射輸送方程式

町田学

浜松医科大学フォトニクス医学研
The radiative transport equation with FDM and FEM
究部

Manabu Machida

ANN ポテンシャルを用いた大規模分子動力学シ
243 ミュレーション：高密度化シリカガラス中におけ 若林
るナノメートルスケールのドメイン構造の研究

大佑

高エネルギー加速器研究機構物質 Large-scale molecular-dynamics simulation with ANN
potentials: nm-scale domain structure in densified silica glass
構造科学研究所

Daisuke
Wakabayashi

244 コロイド結晶に関する分子シミュレーション

寺尾貴道

岐阜大学工学部

Takamichi Terao

Folding mechanisms of the bioactive proteins essential forregenerative medicine

Molecular simulation of colloidal crystals

Organization

High Energy
Accelerator Research
Organization (KEK)
Faculty ofEngineering, Gifu
University

ISSP Activity Report 2017

153

245

分子動力学法による繰り返し変形下での高分子
疲労メカニズムの解析

天本義史

名古屋大学ナショナルコンポジッ
Polymer Fatigue Revealed by Molecular Dynamic Simulation
トセンター

246

カゴメ格子系 Cs2Cu3SnF12 のマグノン分散関係
福元の級数展開法による研究

好志

東京理科大学247

パイロクロア反強磁性体におけるスピン - 格子結
青山
合の効果

和司

大阪大学大学院理学研究科宇宙地
Spin-lattice-coupling effects in pyrochlore antiferromagnets
球専攻

Kazushi Aoyama

Osaka University

248

計算機を用いた新規結合タンパク質の合理的人
工設計

新井

宗仁

東京大学大学院総合文化研究科

Computational rational design of novel binding proteins

Munehito Arai

The University of
Tokyo

249

異方的超伝導接合の量子現象における数値計算
法の研究

田沼

慶忠

秋田大学大学院理工学研究科

Study of numerical methods for quantum phenonema of
anisotoropic superconductors

Yasunari Tanuma

Akita University

250

空間構造をもつ一次元量子スピン系の数値的研
究

利根川

孝

神戸大学大学院理学研究科

Numerical Study of the One-Dimensional Quantum Spin
Systems with Spatial Structures

Takashi Tonegawa

Kobe University

251

フェムト秒領域における電子・格子・光相互作
用系の非断熱ダイナミクス

石田邦夫

宇都宮大学大学院工学研究科

Ultrafast nonadiabatic dynamics of electron-phonon-photon
systems

Kunio Ishida

Utsunomiya
University

Yoshifumi Amamoto

Nagoya University

A series expansion study on the magnon spectrum of a kagome
Tokyo University of
Fukumoto Yoshiyuki
antiferromagnet in Cs2Cu3SnF12
Science154
ISSP Activity Report 2017

No.

課題名

252

フラストレート磁性体における動的スピン相関
の理論研究

青山

和司

大阪大学大学院理学研究科宇宙地 Theoretical study of dynamical spin correlations in frustrated
magnets
球専攻

253

１次元フラストレート量子スピン系の数値的研
究

飛田

和男

埼玉大学大学院理工学研究科物質 Numerical Study of One Dimensional Frustrated Quantum Spin
Kazuo Hida
Systems
科学部門

254

三角格子ハバード模型における多重スピン密度波と磁気スキルミオンの理論内田尚志

北海道科学大学

Theory of the multiple spin density waves and the magnetic
skyrmions in the triangular-lattice Hubbard model

Takashi Uchida

Hokkaido Universityof Science

川村光

大阪大学理学研究科

Numerical simulations on statistical models of earthquakes

Hikaru Kawamura

Osaka University

255 地震の統計モデルの数値シミュレーション

氏名

所属

Title

Name
Kazushi Aoyama

Organization
Osaka University
Saitama University

256

ランチョス法を用いた量子共振器系での光双安
定性の解析

白井

達彦

東京大学物性研究所

Analysis of optical bistability in a quantum cavity system with
Lanczos method

Tatsuhiko Shirai

The University of
Tokyo

257

微細横溝加工を施した鉛直平板を流れる凝縮・沸足立騰液膜流の熱輸送特性

高弘

秋田大学工学資源学部機械工学科

Heat Transfer Characteristics of Condensate/Evaporate Film
Flow along Vertical Plates with Microscopic Grooves

Takahiro Adachi

Akita University

小畑修二

東京電機大学理工学部

Nano-materials Magnetization based on magnetic dipole
moment interactions

Shuji Obata

Tokyo Denki
University

Basic research for significant cost reduction of molecular target
Kouhei Okitsu
drug discovery

258 磁気双極子相互作用に基づくナノ材料磁性259

分子標的創薬の大幅なコストダウンに向けた基
礎研究

沖津

康平

東京大学 大学院工学系研究科

260

乱流伝熱問題における形状最適化シミュレーシ
ョン

森本

賢一

東京大学大学院工学系研究科機械 Shape-Optimization Simulation in Turbulent Heat Transfer
Problem
工学専攻

261 多波高木方程式の最小二乗法による解法の開発

沖津康平

東京大学大学院工学系研究科

Development of algorithm to solve the n-beam Takagi equation
Kouhei Okitsu
with least square method

The University of
Tokyo

262

機械ひずみを用いたナノ材料フォノン・電子輸
送特性制御

塩見

淳一郎

東京大学工学系研究科

Control of phonon and electron transport properties using
mechanical strain

Junichiro Shiomi

The University of
Tokyo

263

ゲノム動力学シミュレーションモデルを用いた出芽酵母の tRNA 遺伝子の空間分布解析

徳田直子

名古屋大学大学院工学研究科

Analysis of Spatial Distributions of tRNA Genes in Budding
Yeast Using the Genome Dynamical Simulation Model

Naoko Tokuda

Nagoya University

中央大学理工学部精密機械工学科 Indentation analysis of soft materials

Tomoaki Tsuji

Chuo University

Yoshinobu Nakatani

University of ElectroCommunications

Yasuhiro Matsuda

The University ofTokyo

264 柔らかい物質の押し込み解析

辻

265 反強磁性体の磁区構造解析シミュレーション

仲谷栄伸

電気通信大学大学院情報理工学研 Simulation analysis of the magnetic domain structure in
Antiferromagnet
究科

松田

康弘

東京大学物性研究所

266

最大エントロピー法やスパースモデリングを用いた状態密度の推定

知章

Estimation of the density of states using Maximum entropy
method and Sparse modeling

Kenichi Morimoto

The University ofTokyo
The University ofTokyo平成 29 年度スーパーコンピュータ 計算物質科学スパコン共用事業 課題一覧
/ Supercomputing Consortium for Computational Materials Science Project List of Supercomputer System 2017
No.

課題名

氏名

所属

Title

Name

Organization

Katsuyuki Nobusada

Institute for Molecular
Science

前期 / The first half term

ISSP Activity Report 20171551

ナノ光応答理論と光・電子融合デバイスの計算
科学的設計

信定

克幸

分子科学研究所

理論・計算分子 Nano-optical response theory and computational design ofunified photonic-electronic devices
科学研究領域2高温超伝導体の超伝導機構解明、転移温度上昇
指針の探求

今田

正俊

東京大学

大学院工学系研 Studies on mechanisms of high-temperature superconductivity
Masatoshi Imadaand search for principles that raise critical temperature
究科

3エネルギーの変換・貯蔵 — 電気エネルギー：全
杉野
電池シミュレータの基盤技術の開発研究

修

東京大学

物性研究所

Conversion and storage of energy - Fuel cells and secondary
batteries: Research and development of fundamental
technologies of battery simulators

Osamu Sugino

The University of
Tokyo

4

粗視化分子動力学法による濃厚高分子ブラシ材
料の摩擦特性研究

芝

隼人

東北大学

金属材料研究所

Study of frictional properties of dense polymer brushes bycoarse-grained moleculer simulateon method

Hayato Shiba

Tohoku University5

多変数変分モンテカルロ法を用いた 2 次元電子ガス系の数値解析

吉見

一慶

東京大学

物性研究所

Numerical study of two-dimensional electron gas system byusing variational Monte Calro method.

Kazuyoshi Yoshimi

The University of
Tokyo

6

H Φを用いた YbMgGaO4 の有限温度計算

三澤

貴宏

東京大学

物性研究所

Finite-temperature calculations of YbMgGaO4 using H Φ

Takahiro Misawa

The University of
Tokyo

7

テンソルネットワーク法の物性物理学への応用

川島

直輝

東京大学

物性研究所

Application of Tensor Network Methods to Condensed Matter
Physics

Naoki Kawashima

The University of
Tokyo

8

有機 / 無機界面の物性に関する計算

尾形修司

名古屋工業大学

大学院工学研究
Simulation of organic-inorganic interfaces
科

Shuji Ogata

Nagoya Institute ofTechnology

9

ポスト京課題７
の連携

遠山

貴巳

東京理科大学

理学部第一部

Takami Tohyama

Tokyo University of
Science10

有機系太陽電池における光電変換の基礎過程の研究と変換効率最適化にむけた大規模数値計算

山下

晃一

東京大学

Koichi Yamashita

The University of
Tokyo

11

エネルギーの変換・貯蔵 — 電気エネルギー：全
岡崎
電池シミュレータの基盤技術の開発研究

進

名古屋大学

Susumu Okazaki

Nagoya University

12

グリーン関数法とフラグメント分割法を用いた分子集合体の励起状態計算藤田貴敏

分子科学研究所

Takatoshi Fujita

Institute for Molecular
Science13

大規模電子状態計算による次世代創・省エネル
ギー材料のマテリアルデザイン

福島

鉄也

大阪大学

ナノサイエンス
Materials design for energy-saving and energy-creation
デザイン教育研
materials
究センター

Tetsuya Fukushima

Osaka University

14

貴金属フリーの汎用元素ナノ触媒に向けた第一
原理計算

武次

徹也

北海道大学

大学院理学研究 Ab initio study on abundant nano-catalysts free from precious
metals院

Tetsuya Taketsugu

Hokkaido University

サブ課題 G ④大型実験施設とCooperation research with big experimental facilities

Large scale calculations on the fundamental processes of
大学院工学系研
organic and perovskite solar cells and their optimization in
究科
conversion efficiency
Conversion and storage of energy - Fuel cells and secondary
大学院工学研究
batteries: Research and development of fundamental
科
technologies of battery simulators
Excited-state calculations for molecular aggregates based on
Green's function and fragmentation methods

The University of
Tokyo

156
ISSP Activity Report 2017

No.

課題名

氏名

所属

15

第一原理計算を用いたスクリーニングによる新規半導体の探索大場史康

東京工業大学16

第一原理計算に基づいた磁性材料の開発

三宅隆

産業技術総合研究所

17

磁性材料界面の構造同定と局所磁気特性解析

合田義弘

東京工業大学

物質理工学院

18

マルチスケールシミュレーションにおける熱輸送に関する研究

川勝

年洋

東北大学

大学院理学研究
Numerical study of thermal transport on multiscale simulation Toshihiro Kawakatsu Tohoku University
科19

複雑流体の分子動力学計算

野口

博司

東京大学

物性研究所

20

大規模磁気構造シミュレーションによる永久磁
石の磁化過程の研究小野寛太

高エネルギー加速器研究機構

Title

Name

Organization

Fumiyasu Oba

Tokyo Institute ofTechnology

First-principles study of magnetic materials

Takashi Miyake

National Institute ofAdvanced Industrial
Science and Technology

Structures and local magnetic properties of magnetic-materialinterfaces

Yoshihiro Gohda

Tokyo Institute ofTechnology

科学技術創成研
Exploration of novel semiconductors by first-principles
究院フロンティscreening
ア材料研究所

Molecular Dynamics Simulation of Complex Fluids

Hiroshi Noguchi

The University ofTokyo

Magnetization process of permanent magnets revealed bylarge-scale simulation

Kanta Ono

High Energy
Accelerator Research
Organization

後期 / The second half term
21

高機能半導体

押山

淳

東京大学

大学院工学系研 Exploration of new-functionality and high-performancesemiconductor devices
究科

Atsushi Oshiyama

The University of
Tokyo

22

テンソルネットワーク、機械学習、フェルミ変分波動関数を組み合わせた高精度量子格子模型
ソルバーの構築

今田

正俊

東京大学

大学院工学系研 Variational Fermi wave function combined with tensor network
Masatoshi Imadaand machine learning for high-accuracy quantum lattice solver
究科

The University of
Tokyo

23

第一原理フェーズ・フィールド・マッピング

香山正憲

産業技術総合研究所

24

粗視化分子動力学法を用いた複合液体ナノスケ
ール動力学の材料科学研究芝25

量子ドット系における多体相関効果の影響に関
する研究

吉見

26

トポロジカル半金属における量子輸送現象

27First-Principles Phase Field Mapping

Masanori Kohyama

National Institute ofAdvanced Industrial
Science and Technology

東北大学

金属材料研究所

Coarse-grained modeling approach to materials research on
nanoscale dynamics of complex liquids

Hayato Shiba

Tohoku University

一慶

東京大学

物性研究所

Study of many-body correlation effects in quantum dots

Kazuyoshi Yoshimi

The University of
Tokyo

三澤

貴宏

東京大学

物性研究所

Quantum transport phenomena in topological semimetals

Takahiro Misawa

The University ofTokyo

ナノ界面高強度パルス光励起ダイナミクス

矢花

一浩

筑波大学

計算科学研究セ Dynamics in nano-interface excited by high-intensity pulsed
light
ンター

Kazuhiro Yabana

University of Tsukuba

28

テンソルネットワーク法の物性物理学への応用

川島

直輝

東京大学

物性研究所

Naoki Kawashima

The University of
Tokyo

29

有機 / 無機界面の物性に関する計算

尾形修司

名古屋工業大学

大学院工学研究
Simulation of organic-inorganic interfaces
科

Shuji Ogata

Nagoya Institute ofTechnology

30

貴金属フリーの汎用元素ナノ触媒に向けた第一
原理計算

武次

徹也

北海道大学

大学院理学研究 Ab initio study on abundant nano-catalysts free from precious
metals院

Tetsuya Taketsugu

Hokkaido University

隼人

Application of Tensor Network Methods to Condensed Matter
Physics

No.

課題名

氏名

所属

31

第一原理計算を用いたスクリーニングによる新規半導体の探索大場史康

東京工業大学32

Ｂ、Ｃ、Ｎを用いた電子デバイス新物質の設計
研究

斎藤

晋

33

複雑流体の分子動力学計算

野口

34

電極界面でのイオン輸送と脱溶媒和過程の分子シミュレーション35

経路積分分子動力学法を用いた含水鉱物結晶の
計算

Title

Name

Organization

科学技術創成研
Exploration of novel semiconductors by first-principles
究院フロンティscreening
ア材料研究所Fumiyasu Oba

Tokyo Institute ofTechnology

東京工業大学

理学院

Materials design using B, C, and N for next-generation device

Susumu Saito

Tokyo Institute ofTechnology

博司

東京大学

物性研究所

Molecular Dynamics Simulation of Complex Fluids

Hiroshi Noguchi

The University of
Tokyo

森田

明弘

東北大学

大学院理学研究 Molecular simulation of ion transport and desolvation atelectrode interface
科

Akihiro Morita

Tohoku University

飯高敏晃

理化学研究所Computational study of hydrous minerals using the path
integral molecular dynamics method

Toshiaki Iitaka

RIKEN

ISSP Activity Report 2017157

Publications
Division of Condensed Matter Science
Takigawa group
We have been performing nuclear magnetic resonance experiments on various quantum spin systems and strongly correlated
electron systems to explore novel quantum phases with exotic ordering and fluctuation phenomena. The major achievements inthe year 2017 include: (1) Determination of complete phase diagram of ferro qudrupole order in PrTi2Al20 showing remarkableanisotropy with respect to the magnetic fied direction, (2) successful explanation of the above results by mean field calculationof a model hamiltonian including field dependent anisotropic quadupole interactioin, and (3) synthesis of single crystal of thebreathing pyrochlore material LiGa Cr4O8 followed by magnetiation and NMR measuremengs on the magnetic ordering andspin structure.
1.

* Collinear2.

Dynamics of bound magnon pairs in the quasi-one-dimensional frustrated magnet LiCuVO4: K. Nawa, M. Takigawa,
S. Krämer, M. Horvatic, C. Berthier, M. Yoshida and K. Yoshimura, Phys. Rev. B 96 (2017) 134423(1-6).

3.

*J -J square-lattice Heisenberg antiferromagnets with 4d1 spins AMoOPO Cl (A=K, Rb): H. Ishikawa, N. Nakamura,
1 2
4

4.

spin density wave order and anisotropic spin fluctuations in the frustrated J 1-J 2 chain magnet
NaCuMoO4(OH): K. Nawa, M. Yoshida, M. Takigawa, Y. Okamoto and Z. Hiroi, Phys. Rev. B 96 (2017) 174433(1-9).

M. Yoshida, M. Takigawa, P. Babkevich, N. Qureshi, H. M. Rønnow, T. Yajima and Z. Hiroi, Phys. Rev. B 95 (2017)064408(1-9).
*Spin dynamics in the high-field phases of volborthite: M. Yoshida, K. Nawa, H. Ishikawa, M. Takigawa, M. Jeong,

S. Krämer, M. Horvatic, C. Berthier, K. Matsui, T. Goto, S. Kimura, T. Sasaki, J. Yamaura, H. Yoshida, Y. Okamoto and
Z. Hiroi, Phys. Rev. B 96 (2017) 180413(R)(1-5).
5.

*Classical Spin Nematic Transition in LiGa
0.95In0.05Cr4O8: R. Wawrzynczak, Y. Tanaka, M. Yoshida, Y. Okamoto,

P. Manuel, N. Casati, Z. Hiroi, M. Takigawa and G. J. Nilsen, Phys. Rev. Lett. 119 (2017) 087201(1-6).

Sakakibara group
We study magnetism and superconductivity of materials having low characteristic temperatures. These include heavy-electron
systems, quantum spin systems and frustrated spin systems. The followings are some selected achievements in the fiscal year
2017. (1) Field-induced ferromagnetic quantum phase transition of itinerant Ising ferromagnet URhGe has been studied bymeans of angle-resolved magnetization measurements. Details of the wing structure phase diagram is obtained. A tricriticalpoint is likely to exists at ~4 K. (2) Quantum criticality of the spin-1/2 ferromagnetic-leg ladder 3-I-V [=3-(3-iodophenyl)1,5-diphenylverdazyl] has been examined with respect to the antiferromagnetic to paramagnetic phase transition. The criticalexponents of the phase boundary agreed with a theoretical prediction of the quasi-1D Bose-Einstein condensation. (3) We
studied the superconducting (SC) gap symmetry and magnetic response of cubic U0.97Th0.03Be13 by means of heat capacity andmagnetization measurements. We confirmed that the previously-reported second phase transition is between two different SC
states. Field and orientation dependences of the heat capacity indicate that the gap is fully opened over the Fermi surface.
1.

†Magnetic Properties and Magnetic Phase Diagrams of Trigonal DyNi Ga : H. Ninomiya, Y. Matsumoto, S. Nakamura,3
92.

Structural, Magnetic, and Superconducting Properties of Caged Compounds ROs2Zn20 (R= La, Ce, Pr, and Nd):
K. Wakiya, T. Onimaru, K. T. Matsumoto, Y. Yamane, N. Nagasawa, K. Umeo, S. Kittaka, T. Sakakibara, Y. Matsushita
and T. Takabatake, J. Phys. Soc. Jpn. 86 (2017) 034707(1-6).

3.

*Thermodynamic Investigation of Metamagnetic Transitions and Partial Disorder in the Quasi-Kagome Kondo Lattice

Y. Kono, S. Kittaka, T. Sakakibara, K. Inoue and S. Ohara, J. Phys. Soc. Jpn. 86 (2017) 124704(1-7).

CePdAl: K. Mochidzuki, Y. Shimizu, A. Kondo, S. Nakamura, S. Kittaka, Y. Kono, T. Sakakibara, Y. Ikeda, Y. Isikawa
and K. Kindo, J. Phys. Soc. Jpn. 86 (2017) 034709(1-5).

* Joint research among groups within ISSP.

158

ISSP Activity Report 2017

4.

Gap structure of FeSe determined by angle-resolved specific heat measurements in applied rotating magnetic field:
Y. Sun, S. Kittaka, S. Nakamura, T. Sakakibara, K. Irie, T. Nomoto, K. Machida, J. Chen and T. Tamegai, Phys. Rev. B
96 (2017) 220505(1-5).

5.

†Magnetic properties of the

6.

†Quasiparticle excitations and evidence for superconducting double transitions in monocrystalline U
0.97Th0.03Be13:

S=1/2 honeycomb lattice antiferromagnet 2-Cl-3,6-F2-V: T. Okabe, H. Yamaguchi,
S. Kittaka, T. Sakakibara, T. Ono and Y. Hosokoshi, Phys. Rev. B 95 (2017) 075120(1-6).
Y. Shimizu, S. Kittaka, S. Nakamura, T. Sakakibara, D. Aoki, Y. Homma, A. Nakamura and K. Machida, Phys. Rev. B
96 (2017) 100505(1-5).

7.

Three-dimensional Bose-Einstein condensation in the spin-1/2 ferromagnetic-leg ladder 3-Br-4-F-V: Y. Kono,
H. Yamaguchi, Y. Hosokoshi and T. Sakakibara, Phys. Rev. B 96 (2017) 104439(1-6).

8.

Wing structure in the phase diagram of the Ising ferromagnet URhGe close to its tricritical point investigated by angleresolved magnetization measurements: S. Nakamura, T. Sakakibara, Y. Shimizu, S. Kittaka, Y. Kono, Y. Haga, J. Pospíšil
and E. Yamamoto, Phys. Rev. B 96 (2017) 094411(1-9).

9.

Nodal gap structure of the heavy-fermion superconductor URu2Si2 revealed by field-angle-dependent specific-heatmeasurements: S. Kittaka, Y. Shimizu, T. Sakakibara, Y. Haga, E. Yamamoto, Y. Onuki, Y. Tsutsumi, T. Nomoto,H. Ikeda and K. Machida, J. Phys.: Conf. Ser. 807 (2017) 052001(1-6).

10. Thermodynamic properties of quadrupolar states in the frustrated pyrochlore magnet Tb2Ti2O7: H. Takatsu,
T. Taniguchi, S. Kittaka, T. Sakakibara and H. Kadowaki, J. Phys.: Conf. Ser. 828 (2017) 012007(1-6).
11. †Randomness-induced quantum spin liquid on honeycomb lattice: H. Yamaguchi, M. Okada, Y. Kono, S. Kittaka,
T. Sakakibara, T. Okabe, Y. Iwasaki and Y. Hosokoshi, Sci. Rep. 7 (2017) 16144(1-6).
12. *Unique Electronic States in Non-centrosymmetric Cubic Compounds: M. Kakihana, K. Nishimura, Y. Ashitomi,
T. Yara, D. Aoki, A. Nakamura, F. Honda, M. Nakashima, Y. Amako, Y. Uwatoko, T. Sakakibara, S. Nakamura,T. Takeuchi, Y. Haga, E. Yamamoto, H. Harima, M. Hedo, T. Nakama and Y. Onuki, J. Electron. Mater. 46 (2017)3572-3586.
13. Fully gapped superconductivity with no sign change in the prototypical heavy-fermion CeCu2Si2: T. Yamashita,
T. Takenaka, Y. Tokiwa, J. A. Wilcox, Y. Mizukami, D. Terazawa, Y. Kasahara, S. Kittaka, T. Sakakibara,
M. Konczykowski, S. Seiro, H. S. Jeevan, C. Geibel, C. Putzke, T. Onishi, H. Ikeda, A. Carrington, T. Shibauchi and
Y. Matsuda, Sci. Adv. 3 (2017) e1601667(1-7).
14. Giant Hall Resistivity and Magnetoresistance in Cubic Chiral Antiferromagnet EuPtSi: M. Kakihana, D. Aoki,
A. Nakamura, F. Honda, M. Nakashima, Y. Amako, S. Nakamura, T. Sakakibara, M. Hedo, T. Nakama and Y. Onuki,
J. Phys. Soc. Jpn. 87 (2018) 023701(1-4).
15. Magnetic-field-induced Quantum Phase in S = 1/2 Frustrated Trellis Lattice: H. Yamaguchi, D. Yoshizawa, T. Kida,
M. Hagiwara, A. Matsuo, Y. Kono, T. Sakakibara, Y. Tamekuni, H. Miyagai and Y. Hosokoshi, J. Phys. Soc. Jpn. 87(2018) 043701(1-5).
16. Quasi-one-dimensional Bose-Einstein condensation in the spin-1/2 ferromagnetic-leg ladder 3-I-V: Y. Kono, S. Kittaka,
H. Yamaguchi, Y. Hosokoshi and T. Sakakibara, Phys. Rev. B 97 (2018) 100406(1-5).
17. Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6: M. Hartstein, W. H. Toews, Y. -T. Hsu,
B. Zeng, X. Chen, M. Ciomaga Hatnean, Q. R. Zhang, S. Nakamura, A. S. Padgett, G. Rodway-Gant, J. Berk, M.
K. Kingston, G. H. Zhang, M. K. Chan, S. Yamashita, T. Sakakibara, Y. Takano, J. -H. Park, L. Balicas, N. Harrison,
N. Shitsevalova, G. Balakrishnan, G. G. Lonzarich, R. W. Hill, M. Sutherland and S. E. Sebastian, Nature Phys. 14(2018) 166-172.
18. †*Quantum valence criticality in a correlated metal: K. Kuga, Y. Matsumoto, M. Okawa, S. Suzuki, T. Tomita,
K. Sone, Y. Shimura, T. Sakakibara, D. Nishio-Hamane, Y. Karaki, Y. Takata, M. Matsunami, R. Eguchi, M. Taguchi,
A. Chainani, S. Shin, K. Tamasaku, Y. Nishino, M. Yabashi, T. Ishikawa and S. Nakatsuji, Sci. Adv. 4 (2018) eaao3547(1-6).
19. 磁場角度回転比熱測定による超伝導研究 : 橘高俊 一郎 , 物性研究・電子版 6 (2017) 85-125.

Mori group
We have successfully developed and unveiled unprecedented functional properties for the molecular materials. The majorachievements in 2017 are (1) to disclose the "proton-electron coupled properties" such as quantum spin liquid and H/D isotope† Joint research with outside partners.

ISSP Activity Report 2017159

effects for our developed organic conductor, κ-H3(Cat-EDT-TTF)2, by the measurements of specific heat, dielectric response,
and thermal conductivity, and DFT calculation, (2) to develop and reveal the peculiarities for novel hydrogen-bonded organic
conductors, β-[BTBT(OH)2]2ClO4 and β'-H3(Cat-EDO-TTF)2BF4, and (3) to demonstrate the "charge-glass" in organic
conductor, θ-(BEDT-TTF)2TlZn(SCN)4.
1.

Thermodynamics of the quantum spin liquid state of the single-component dimer Mott system κ−H3(Cat−EDT−TTF)2:
S. Yamashita, Y. Nakazawa, A. Ueda and H. Mori, Phys. Rev. B 95 (2017) 184425(1-5).

2.

Visualization of a nonlinear conducting path in an organic molecular ferroelectric by using emission of terahertz radiation: M. Sotome, N. Kida, Y. Kinoshita, H. Yamakawa, T. Miyamoto, H. Mori and H. Okamoto, Phys. Rev. B 95 (2017)
241102R(1-5).

3.

Improved stability of a metallic state in benzothienobenzothiophene-based molecular conductors: an effective increaseof dimensionality with hydrogen bonds: T. Higashino, A. Ueda, J. Yoshida and H. Mori, Chem. Commun. 53 (2017)3426-3429.

4.

Crystallization and vitrification of electrons in a glass-forming charge liquid: S. Sasaki, K. Hashimoto, R. Kobayashi,
K. Itoh, S. Iguchi, Y. Nishio, Y. Ikemoto, T. Moriwaki, N. Yoneyama, M. Watanabe, A. Ueda, H. Mori, K. Kobayashi,
R. Kumai, Y. Murakami, J. Müller and T. Sasaki, Science 357 (2017) 1381-1385.

5.

Multicomponent DFT study of geometrical H/D isotope effect on hydrogen-bonded organic conductor, κ-H3(CatEDT-ST)2: K. Yamamoto, Y. Kanematsu, U. Nagashima, A. Ueda, H. Mori and M. Tachikawa, Chem. Phys. Lett. 674(2017) 168-172.

6.

*Quantum-disordered state of magnetic and electric dipoles in an organic Mott system: M. Shimozawa, K. Hashimoto,

A. Ueda, Y. Suzuki, K. Sugii, S. Yamada, Y. Imai, R. Kobayashi, K. Itoh, S. Iguchi, M. Naka, S. Ishihara, H. Mori,
T. Sasaki and M. Yamashita, Nat. Commun. 8 (2017) 1821(1-6).
7.

Anion substitution in hydrogen-bonded organic conductors: the chemical pressure effect on hydrogen-bond-mediatedphase transition: J. Yoshida, A. Ueda, R. Kumai, Y. Murakami and H. Mori, CrystEngComm 19 (2017) 367-375.

8.

Valence engineering of ionic molecular crystals: monovalent–divalent phase diagram for biferrocene–tetracyanoquinodimethane salts: T. Mochida, Y. Funasako, T. Akasaka, M. Uruichi and H. Mori, CrystEngComm 19 (2017) 1449-1453.

9.

Spin-Singlet Transition in the Magnetic Hybrid Compound from a Spin-Crossover Fe(III) Cation and π-Radical Anion:
K. Takahashi, T. Sakurai, W.-M. Zhang, S. Okubo, H. Ohta, T. Yamamoto, Y. Einaga and H. Mori, Inorganics 5 (2017)
54(1-14).

10. Development of Novel Functional Organic Crystals by Utilizing Proton- and π-Electron-Donating/Accepting Abilities:
A. Ueda, Bull. Chem. Soc. Jpn 90 (2017) 1181-1188.
11. Antiferromagnetic Ordering in Organic Conductor λ-(BEDT-TTF)2GaCl4 Probed by 13C NMR: Y. Saito, S. Fukuoka,
T. Kobayashi, A. Kawamoto and H. Mori, J. Phys. Soc. Jpn. 87 (2018) 013707(1-4).
12. Size effects on supercooling phenomena in strongly correlated electron systems: IrTe 2 and θ-(BEDTTTF)2RbZn(SCN)4: H. Oike, M. Suda, M. Kamitani, A. Ueda, H. Mori, Y. Tokura, H. M. Yamamoto and F. Kagawa,Phys. Rev. B 97 (2018) 085102(1-7).
13. †*Strong Hydrogen Bonds at the Interface between Proton-Donating and -Accepting Self-Assembled Monolayers on
Au(111): H. S. Kato, S. Yoshimoto, A. Ueda, S. Yamamoto, Y. Kanematsu, M. Tachikawa, H. Mori, J. Yoshinobu and
I. Matsuda, Langmuir 34 (2018) 2189-2197.
14. The thermoelectric power of band-filling controlled organic conductors, β′-(BEDT-TTF)3(CoCl4)2−x(GaCl4)x: Y. Kiyota,
T. Kawamoto, H. Mori and T. Mori, J. Mater. Chem. A 6 (2018) 2004-2010.
15. A phenol-fused tetrathiafulvalene: modulation of hydrogen-bond patterns and electrical conductivity in the chargetransfer salt: A. Ueda and H. Mori, Mater. Chem. Front. 2 (2018) 566-572.
16. Anisotropic Proton Conductivity Arising from Hydrogen-Bond Patterns in Anhydrous Organic Single Crystals, Imidazolium Carboxylates: Y. Sunairi, A. Ueda, J. Yoshida, K. Suzuki and H. Mori, J. Phys. Chem. C (2018), in print.

Osada group
A layered organic Dirac semimetal α-(BEDT-TTF)2I3 shows a metal-insulator transition due to charge ordering (CO) at ambientpressure, which is suppressed by applying pressure. We found that its temperature dependence of resistance below the COtransition shows no insulating behavior but metallic behavior in the weak CO state just below the critical pressure (~ 1.1 GPa).
* Joint research among groups within ISSP.

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We investigated the temperature dependence of magnetoresistance in detail, and concluded that the gapped Dirac fermion
state is realized in the weak CO state. Based on these experimental result, we consider the electronic structure of α-(BEDTTTF)2I3 with intracellular potential and magnetic modulations due to CO, which were observed in NMR measurement. This isan organic analogue of the Haldane model in graphene. When magnetic modulation is sufficiently large, the system becomes a
Chern insulator, where the Berry curvatures around two gapped Dirac cones have the same sign on each band, and one chiraledge state connects the conduction and valence bands at each crystal edge. We pointed out the possibility that the metallic transport in the weak CO state originates from the edge transport in the Chern insulator state.
1.

Chern Insulator Phase in a Lattice of an Organic Dirac Semimetal with Intracellular Potential and Magnetic Modulations: T. Osada, J. Phys. Soc. Jpn. 86 (2017) 123702(1-5).

2.

Topological Insulator State due to Finite Spin-Orbit Interaction in an Organic Dirac Fermion System: T. Osada, J. Phys.
Soc. Jpn. 87 (2018) 075002(1-2).

3.

Thickness-dependent phase transition in graphite under high magnetic field: T. Taen, K. Uchida and T. Osada, Phys.
Rev. B 97 (2018) 115122(1-7).

Yamashita group
We have been studying (1) quantum criticality in heavy-fermion materials by ultra-low temperature cryostat, (2) thermal-Hall
conductivity of exotic excitations in frustrated magnets and (3) a new technique for the study of strongly-correlated electron
systems. In this year, we have performed (1) Co and In NMR measurements of CeCoIn5 at ultra-low temperatures, (2) thermal
Hall measurements of kagome materials and (3) scanning-Hall measurements of Mn3Sn and Fe-based superconductors.
1.

*Thermal Hall Effect in a Phonon-Glass Ba CuSb O : K. Sugii, M. Shimozawa, D. Watanabe, Y. Suzuki, M. Halim,
3
2 9

2.

*Quantum-disordered state of magnetic and electric dipoles in an organic Mott system: M. Shimozawa, K. Hashimoto,

M. Kimata, Y. Matsumoto, S. Nakatsuji and M. Yamashita, Phys. Rev. Lett. 118 (2017) 145902(1-5).

A. Ueda, Y. Suzuki, K. Sugii, S. Yamada, Y. Imai, R. Kobayashi, K. Itoh, S. Iguchi, M. Naka, S. Ishihara, H. Mori,
T. Sasaki and M. Yamashita, Nat. Commun. 8 (2017) 1821(1-6).
3.

Anomalous Change in the de Haas–van Alphen Oscillations of CeCoIn5 at Ultralow Temperatures: H. Shishido,
S. Yamada, K. Sugii, M. Shimozawa, Y. Yanase and M. Yamashita, Phys. Rev. Lett. 120 (2018) 177201.

4.

格子振動による熱ホール効果 : 杉井か おり , 山下 穣 , 固体物理 52 (2017) 783.

Division of Condensed Matter Theory
Tsunetsugu group
We have investigated the antiferromagnetic order in a quasicrystal from the viewpoint of the interplay between strong correlation effects and unique crystal structure. To this end, we have employed the simplest canonical model, i.e. the Hubbard modelon the two-dimensional Penrose lattice at half filling of electron density. Due to the quasiperiodic lattice structure, this modelhas thermodynamically degenerate one-electron states at the band center. Each of their wavefunctions is confined in a finite
region in the lattice, and thereofre they are called the confined states. These confined states are magnetized by Coulomb repulsion between electrons. They show an antiferromagnetic long-range order at zero temperature, but its spatial structure differsfrom other antiferromagnets. The whole Penrose lattice is divided into many clusters, and the ordered magnetizations point tothe same direction in each cluster, while neighboring clusters have opposite directions each other. Furthermore, the cluster size
exhibits a power-law distribution, which is related to the self-similarity in the lattice inherent from the quasiperiodicity.
1.

Antiferromagnetic order in the Hubbard model on the Penrose lattice: A. Koga and H. Tsunetsugu, Phys. Rev. B 96
(2017) 214402.

2.

Entanglement prethermalization in an interaction quench between two harmonic oscillators: T. N. Ikeda, T. Mori,
E. Kaminishi and M. Ueda, Phys. Rev. E 95 (2017) 022129(1-8).

3.

Theory of antiferromagnetic Heisenberg spins on a breathing pyrochlore lattice: H. Tsunetsugu, Prog. Theor. Exp. Phys.
2017 (2017) 033101(1-29).

4.

Entanglement prethermalization in the Tomonaga-Luttinger model: E. Kaminishi, T. Mori, T. N. Ikeda and M. Ueda,
Phys. Rev. A 97 (2018) 013622(1-9).

† Joint research with outside partners.

ISSP Activity Report 2017161

Kato group
The main research subject of Kato lab. is theory of non-equilibrium properties in mesoscopic devices. We have studied (1)spin-current noise at the interface between a ferromagnetic insulator and a metal, (2) effect of Coulomb interaction on charge
pumping via a quantum dot due to reservoir temperature driving, (3) heat transport via a two-state system, and (4) current correlations of a Kondo correlated dot with degenerated orbitals. In collaboration with Sugino group, we have studied first-principles
description of van der Waals bonded spin-polarized systems such as solid oxygen using the vdW-DF+U method. We have alsostudied terahertz response of a ferromagnetic insulator ErFeO3 in collaboration with an experimental group (Suemoto group).
1.

Temperature-Driven and Electrochemical-Potential-Driven Adiabatic Pumping via a Quantum Dot: M. Hasegawa and
T. Kato, J. Phys. Soc. Jpn. 86 (2017) 024710(1-13).

2.

*First-principles description of van der Waals bonded spin-polarized systems using the vdW-DF+U method: Application

3.

Quantum Fluctuations along Symmetry Crossover in a Kondo-Correlated Quantum Dot: M. Ferrier, T. Arakawa,
T. Hata, R. Fujiwara, R. Delagrange, R. Deblock, Y. Teratani, R. Sakano, A. Oguri and K. Kobayashi, Phys. Rev. Lett.
118 (2017) 196803(1-5).

4.

Observation of long-lived coherent spin precession in orthoferrite ErFeO3 induced by terahertz magnetic fields:
H. Watanabe, T. Kurihara, T. Kato, K. Yamaguchi and T. Suemoto, Appl. Phys. Lett. 111 (2017) 092401(1-4).

5.

多端子系のジョセフソン接合が示すトポロジカル物性 : 横山 知大 , 日本物理学会誌 72 (2017) 402.

6.

Effect of Interaction on Reservoir-Parameter-Driven Adiabatic Charge Pumping via a Single-Level Quantum Dot
System: M. Hasegawa and T. Kato, J. Phys. Soc. Jpn. 87 (2018) 044709.

7.

Current cross-correlation in the Anderson impurity model with exchange interaction: R. Sakano, A. Oguri, Y. Nishikawa
and E. Abe, Phys. Rev. B 97 (2018) 045127(1-13).

8.

Spin Current Noise of the Spin Seebeck Effect and Spin Pumping: M. Matsuo, Y. Ohnuma, T. Kato and S. Maekawa,Phys. Rev. Lett. 120 (2018) 235120(1-5).

9.

物質科学シミュレーションのポータルサイト MateriApps: 本山 裕一 , 三澤 貴宏 , 加藤 岳生 , 藤堂 眞治 , 固体物理 52

to solid oxygen at low pressure: S. Kasamatsu, T. Kato and O. Sugino, Phys. Rev. B 95 (2017) 235120(1-11).

(2017) 743.

10. 非平衡電流ゆらぎでみる量子ドットの電子多体効果 : 阪野 塁 , 物性研究・電子版 6 (2017) 064208.

Division of Nanoscale Science
Katsumoto group
Physical properties of quantum Hall edge states have been unveiled through thermoelectric power caused by microwave irradiation. Study on the effect of decoration on the surfaces of graphene or other 2D materials has been going on. We found strong
ferromagnetism in MoS2 with nano-mesh. Also large spin orbit interaction was introduced with nano-particles on graphene. A
peculiar phenomenon called Zitterbewegung theoretically found long time ago by Schrodinger was observed as reproducible
conductance fluctuation in spin-polarized transport through a two-dimensional electrons with strong Rashba-type spin-orbit
interaction.
1.

†Theoretical modeling of electrical resistivity and Seebeck coefficient of bismuth nanowires by considering carrier mean

2.

†Photoresponse in gate-tunable atomically thin lateral MoS Schottky junction patterned by electron beam: Y. Katagiri,
2

3.

Two-carrier model on the magnetotransport of epitaxial graphene containing coexisting single-layer and bilayer areas:
A. Endo, J. Bao, W. Norimatsu, M. Kusunoki, S. Katsumoto and Y. Iye, Philos. Mag. 97 (2017) 1755-1767.

4.

Observation of Conductance Fluctuation due to Zitterbewegung in InAs 2-dimentional Electron Gas: Y. Iwasaki,
Y. Hashimoto, T. Nakamura and S. Katsumoto, J. Phys.: Conf. Ser. 864 (2017) 012054(1-4).

5.

Edge-spin-derived magnetism in few-layer MoS2 nanomeshes: G. Kondo, N. Yokoyama, S. Yamada, Y. Hashimoto,
C. Ohata, S. Katsumoto and J. Haruyama, AIP Advances 7 (2017) 125019(1-7).

free path limitation: M. Murata, A. Yamamoto, Y. Hasegawa, T. Komine and A. Endo, J. Appl. Phys. 121 (2017) 014303(1-10).
T. Nakamura, C. Ohata, S. Katsumoto and J. Haruyama, Appl. Phys. Lett. 110 (2017) 143109(1-3).

* Joint research among groups within ISSP.

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6.

Conductance fluctuations in InAs quantum wells possibly driven by Zitterbewegung: Y. Iwasaki, Y. Hashimoto,
T. Nakamura and S. Katsumoto, Sci. Rep. 7 (2017) 7909(1-9).

7.

†Large edge magnetism in oxidized few-layer black phosphorus nanomeshes: Y. Nakanishi, A. Ishi, C. Ohata,

8.

Frequencies of the Edge-Magnetoplasmon Excitations in Gated Quantum Hall Edges: A. Endo, K. Koike, S. Katsumoto
and Y. Iye, J. Phys. Soc. Jpn. 87 (2018) 064709.

9.

Frequency dependent ac transport of films of close-packed carbon nanotube arrays: A. Endo, S. Katsumoto, K. Matsuda,
W. Norimatsu and M. Kusunoki, J. Phys.: Conf. Ser. 969 (2018) 012129.

D. Soriano, R. Iwaki, K. Nomura, M. Hasegawa, T. Nakamura, S. Katsumoto, S. Roche and J. Haruyama, Nano Res. 10(2017) 718-728.

10. Proximity-Induced Superconductivity in a Ferromagnetic Semiconductor (In,Fe)As: T. Nakamura, L. D. Anh, Y. Hashimoto, Y. Iwasaki, S. Ohya, M. Tanaka and S. Katsumoto, J. Phys.: Conf. Ser. 969 (2018) 012036.

Otani group
We have studied following topics this year: Spin conversion behaviors at the interfaces and the surfaces, magnetization
dynamics in ferromagnetic nano structures, and magneto-thermoelectric properties. In the first topic, we succeeded in opticallydetect spin accumulation induced at the copper/Bi oxide interface. We have performed collaborative study with Tokura-groupat CEMS RIKEN on non-linear Hall effect and spin orbit torque induced magnetization switching in magnetic topologicalinsulator. Spin transport in a ferromagnet is also an important topic in relation with spin conversion, we have applied our spin
absorption technique to determine the spin diffusion length of Ni-Fe alloy nano wires. In the second topic, we have establishedthe technique to modulate the interface perpendicular anisotropy by voltage. Thereby we succeeded in exciting coherent propagating spin waves in ultrathin CoFeB films. In the third topic, we have found bulk equivalent anomalous Nernst effect takes
place in a microfabricated thermoelectric element made of chiral antiferromagnet Mn3Sn in collaboration with Nakatsuji group.
1.

Bias field tunable magnetic configuration and magnetization dynamics in Ni80Fe20 nano-cross structures with varying
arm length: K. Adhikari, S. Choudhury, R. Mandal, S. Barman, Y. Otani and A. Barman, J. Appl. Phys. 121 (2017)043909(1-5).

2.

Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces: J. Kim, Y.-T. Chen,
S. Karube, S. Takahashi, K. Kondou, G. Tatara and Y. Otani, Phys. Rev. B 96 (2017) 140409R(1-6).

3.

Current-Nonlinear Hall Effect and Spin-Orbit Torque Magnetization Switching in a Magnetic Topological Insulator:
K. Yasuda, A. Tsukazaki, R. Yoshimi, K. Kondou, K. S. Takahashi, Y. Otani, M. Kawasaki and Y. Tokura, Phys. Rev.
Lett. 119 (2017) 137204(1-5).

4.

*Anomalous Nernst effect in a microfabricated thermoelectric element made of chiral antiferromagnet Mn Sn:
3

H. Narita, M. Ikhlas, M. Kimata, A. A. Nugroho, S. Nakatsuji1 and Y. Otani, Appl. Phys. Lett. 111 (2017) 202404(1-5).

5.

Direct optical observation of spin accumulation at nonmagnetic metal/oxide interface: J. Puebla, F. Auvray, M. Xu,
B. Rana, A. Albouy, H. Tsai, K. Kondou, G. Tatara and Y. Otani, Appl. Phys. Lett. 111 (2017) 092402(1-4).

6.

Excitation of coherent propagating spin waves in ultrathin CoFeB film by voltage-controlled magnetic anisotropy:
B. Rana, Y. Fukuma, K. Miura, H. Takahashi and Y. Otani, Appl. Phys. Lett. 111 (2017) 052404(1-5).

7.

Important role of magnetization precession angle measurement in inverse spin Hall effect induced by spin pumping:
S. Gupta, R. Medwal, D. Kodama, K. Kondou, Y. Otani and Y. Fukuma, Appl. Phys. Lett. 110 (2017) 022404(1-5).

8.

Spin diffusion length of Permalloy using spin absorption in lateral spin valves: E. Sagasta, Y. Omori, M. Isasa, Y. Otani,
L. E. Hueso and F. Casanova, Appl. Phys. Lett. 111 (2017) 082407(1-4).

9.

スピントロニクス実験のコツ - スピン流の計測 -: 近藤 浩太 , 大谷 義近 , 応用物理 86 (2017) 139.

10. 表面・界面を利用してスピン流を作る : 近藤 浩太 , 軽部 修太郎 , 大谷 義近 , 日本物理学会誌 72 (2017) 320.
11. High output voltage of magnetic tunnel junctions with a Cu(In0.8Ga0.2)Se2 semiconducting barrier with a low resistance–area product: K. Mukaiyama, S. Kasai, Y. K. Takahashi, K. Kondou, Y. Otani, S. Mitani and K. Hono, Appl. Phys.
Express 10 (2017) 013008(1-3).
12. Spin pumping due to spin waves in magnetic vortex structure: N. Hasegawa, K. Kondou, M. Kimata and Y. Otani, Appl.
Phys. Express 10 (2017) 053002(1-3).
13. Investigation of magnetization dynamics in 2D Ni80Fe20 diatomic nanodot arrays: A. De, S. Mondal, C. Banerjee, A. K.
Chaurasiya, R. Mandal, Y. Otani, R. K. Mitra and A. Barman, J. Phys. D: Appl. Phys. 50 (2017) 385002(1-11).
† Joint research with outside partners.

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14. *Large anomalous Nernst effect at room temperature in a chiral antiferromagnet: M. Ikhlas, T. Tomita, T. Koretsune,
M.-T. Suzuki, D. Nishio-Hamane, R. Arita, Y. Otani and S. Nakatsuji, Nature Phys. 13 (2017) 1085-1090.
15. Spin conversion on the nanoscale: Y. Otani, M. Shiraishi, A. Oiwa, E. Saitoh and S. Murakami, Nature Phys. 13 (2017)829-832.
16. Efficient Modulation of Spin Waves in Two-Dimensional Octagonal Magnonic Crystal: S. Choudhury, S. Barman,
Y. Otani and A. Barman, ACS Nano 11 (2017) 8814-8821.
17. Effect of excitation power on voltage induced local magnetization dynamics in an ultrathin CoFeB film: B. Rana,
Y. Fukuma, K. Miura, H. Takahashi and Y. Otani, Sci. Rep. 7 (2017) 2318(1-9).
18. Voltage-induced magnetization dynamics in CoFeB/MgO/CoFeB magnetic tunnel junctions: K. Miura, S. Yabuuchi,
M. Yamada, M. Ichimura, B. Rana, S. Ogawa, H. Takahashi, Y. Fukuma and Y. Otani, Sci. Rep. 7 (2017) 42511(1-8).
19. *Macroscopic Magnetization Control by Symmetry Breaking of Photoinduced Spin Reorientation with Intense Terahertz
Magnetic Near Field: T. Kurihara, H. Watanabe, M. Nakajima, S. Karube, K. Oto, Y. Otani and T. Suemoto, Phys. Rev.
Lett. 120 (2018) 107202.
20. Anomalous modulation of spin torque-induced ferromagnetic resonance caused by direct currents in permalloy/platinum
bilayer thin films: S. Hirayama, S. Mitani, Y. Otani and S. Kasai, Appl. Phys. Express 11 (2018) 013002 (1-4).
21. Voltage-Controlled Reconfigurable Spin-Wave Nanochannels and Logic Devices: B. Rana and Y. Otani, Phys. Rev.
Applied 9 (2018) 014033(1-15).

Komori group
A-few-atomic-layer ferromagnetic γ'-Fe4N thin films are studied by scanning tunneling microscopy/spectroscopy (STM/STS)and soft X-ray magnetic circular dichroism. The spin magnetic moment of Fe atoms increases with increasing the average thickness reaching 1.4μB/atom in the trilayer sample. Hexagonal atomic- layer iron nitrides with different crystal and local electronic
structures are also found to grow on the Cu(001) surface. Local change of the electron-phonon coupling in periodically nanomodulated graphene on a macrofacet of SiC(0001) substrate is studied using inelastic STS. The coupling depends on the local
distance between the graphene and the SiC substrate. An in-gap surface state on a Kondo insulator SmB6(001) surface is studied
by STS. The surface state survives even on the area with significant density of defects, which supports the existence of the
topological Kondo surface state on this surface.
1.

*Calculation of spin states of photoelectrons emitted from spin-polarized surface states of Bi(111) surfaces with a mirror

2.

*Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spinsplit surface states: R. Noguchi, K. Kuroda, K. Yaji, K. Kobayashi, M. Sakano, A. Harasawa, T. Kondo, F. Komori and
S. Shin, Phys. Rev. B 95 (2017) 041111(R)(1-6).

3.

Enhanced periodic modulation of electronic states in a hexagonal iron-nitride monolayer on Cu(001) via interfacialinteraction: K. Ienaga, T. Miyamachi, Y. Takahashi, N. Kawamura and F. Komori, Phys. Rev. B 96 (2017) 085439(1-8).

4.

Thickness-dependent electronic and magnetic properties of γ'-Fe4N atomic layers on Cu(001): Y. Takahashi,
T. Miyamachi, S. Nakashima, N. Kawamura, Y. Takagi, M. Uozumi, V. N. Antonov, T. Yokoyama, A. Ernst andF. Komori, Phys. Rev. B 95 (2017) 224417(1-8).

5.

†*Dirac Fermions in Borophene: B. Feng, O. Sugino, R.-Y. Liu, J. Zhang, R. Yukawa, M. Kawamura, T. Iimori, H. Kim,

symmetry: K. Kobayashi, K. Yaji, K. Kuroda and F. Komori, Phys. Rev. B 95 (2017) 205436(1-13).

Y. Hasegawa, H. Li, L. Chen, K. Wu, H. Kumigashira, F. Komori, T.-C. Chiang, S. Meng and I. Matsuda, Phys. Rev.
Lett. 118 (2017) 096401(1-6).
6.

* ホウ素単原子シート「ボロフェン」：金属性とディラックフェルミオン : F. Baojie, 松田 巌 , 固体物理 52 (2017) 385-393.

7.

STM observation of the chemical reaction of atomic hydrogen on the N-adsorbed Cu(001) surface: T. Hattori,
M. Yamada and F. Komori, Surf. Sci. 655 (2017) 1-6.

8.

* ホウ素単原子シート「ボロフェン」: 松田 巌 , パリティ 32 (2017) 50-53.

9.

†Modulation of Electron–Phonon Coupling in One-Dimensionally Nanorippled Graphene on a Macrofacet of 6H-SiC:

K. Ienaga, T. Iimori, K. Yaji, T. Miyamachi, S. Nakashima, Y. Takahashi, K. Fukuma, S. Hayashi, T. Kajiwara,
A. Visikovskiy, K. Mase, K. Nakatsuji, S. Tanaka and F. Komori, Nano Lett. 17 (2017) 3527-3532.

* Joint research among groups within ISSP.

164

ISSP Activity Report 201710. *Spin-dependent quantum interference in photoemission process from spin-orbit coupled states: K. Yaji, K. Kuroda,
S. Toyohisa, A. Harasawa, Y. Ishida, S. Watanabe, C. Chen, K. Kobayashi, F. Komori and S. Shin, Nat. Commun. 8(2017) 14588(1-6).
11. †Evidence for in-gap surface states on the single phase SmB6(001) surface: T. Miyamachi, S. Suga, M. Ellguth,
C. Tusche, C. M. Schneider, F. Iga and F. Komori, Sci. Rep. 7 (2017) 12837(1-7).
12. †*Spin-polarized quasi-one-dimensional state with finite band gap on the Bi/InSb(001) surface: J. Kishi, Y. Ohtsubo,
T. Nakamura, K. Yaji, A. Harasawa, F. Komori, S. Shin, J. E. Rault, P. Le Fèvre, F. Bertran, A. Taleb-Ibrahimi,
M. Nurmamat, H. Yamane, S. Ideta, K. Tanaka and S. Kimura, Phys. Rev. Materials 1 (2017) 064602(1-5).
13. *Surface state of the dual topological insulator Bi0.91Sb0.09 (11-2): I. Matsuda, K. Yaji, A. A. Taskin, M. D'angelo,
R. Yukawa, Y. Ohtsubo, P. Le Fèvre, F. Bertran, S. Yoshizawa, A. Taleb-Ibrahimi, A. Kakizaki, Y. Ando and F. Komori,Phys. B: Condensed Matter 516 (2017) 100-104.
14. *Surface electronic states of Au-induced nanowires on Ge(0 0 1): K. Yaji, R. Yukawa, S. Kim, Y. Ohtsubo, P. L. Fèvre,F. Bertran, A. Taleb-Ibrahimi, I. Matsuda, K. Nakatsuji, S. Shin and F. Komori, J. Phys.: Condens. Matter 30 (2018)075001(1-7).
15. *Alkali-metal induced band structure deformation investigated by angle-resolved photoemission spectroscopy andfirst-principles calculations: S. Ito, B. Feng, M. Arita, T. Someya, W. -C. Chen, A. Takayama, T. Iimori, H. Namatame,
M. Taniguchi, C. -M. Cheng, S. -J. Tang, F. Komori and I. Matsuda, Phys. Rev. B 97 (2018) 155423(1-8).
16. * レーザー励起スピン分解光電子分光で解き明かす光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 光学 47(2018) 142-147.
17. *A Table-Top Formation of Bilayer Quasi-Free-Standing Epitaxial-Graphene on SiC(0001) by Microwave Annealing in
Air: K.-S. Kim, G.-H. Park, H. Fukidome, T. Someya, T. Iimori, F. Komori, I. Matsuda and M. Suemitsu, Carbon 130(2018) 792-798.
18. * 物質科学、この 1 年「ボロフェンにおけるディラックフェルミオン」: 松田 巌 , パリティ 33 (2018) 36-38.
19. †Evaluation of structural vacancies for 1/1-Al–Re–Si approximant crystals by positron annihilation spectroscopy:
K. Yamada, H. Suzuki, H. Kitahata, Y. Matsushita, K. Nozawa, F. Komori, R. S. Yu, Y. Kobayashi, T. Ohdaira,N. Oshima, R. Suzuki, Y. Takagiwa, K. Kimura and I. Kanazawa, Philos. Mag. 98 (2018) 107-117.
20. *Discovery of 2D Anisotropic Dirac Cones: B. Feng, J. Zhang, S. Ito, M. Arita, C. Cheng, L. Chen, K. Wu, F. Komori,O. Sugino, K. Miyamoto, T. Okuda, S. Meng and I. Matsuda, Adv. Mater. 30 (2018) 1704025(1-6).
21. †Triangular lattice atomic layer of Sn(1×1) at graphene/SiC(0001) interface: S. Hayashi, A. Visikovskiy, T. Kajiwara,
T. Iimori, T. Shirasawa, K. Nakastuji, T. Miyamachi, S. Nakashima, K. Yaji, K. Mase, F. Komori and S. Tanaka, Appl.
Phys. Express 11 (2018) 015202(1-4).
22. Lattice distortion of square iron nitride monolayers induced by changing symmetry of substrate: T. Hattori, T. Iimori,T. Miyamachi and F. Komori, Phys. Rev. Materials 2 (2018) 044003(1-7).
23. * レーザーで電子のスピン方向を自由に制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , レーザー加工学会誌 25 (2018)39-42.
24. †*Experimental Methods for Spin and Angle-Resolved Photoemission Spectroscpy Combined with Polarization Variable
Laser: K. Kuroda, K. Yaji, A. Harasawa, R. Noguchi, T. Kondo, F. Komori and S. Shin, JoVE (2018), in print.
25. * 固体表面電子におけるスピン軌道エンタングルメントと光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 個体
物理 52 (2017) 559-571.

Hasegawa group
Using low-temperature ultrahigh vacuum scanning tunneling microscopy (STM) we have obtained real-space images showing
orbital order on a Co-terminated surface of CeCoIn5, which is a heavy-fermion superconducting material. Because of the
4-fold symmetry regardless of the sites in the bulk or on the surface, 3dxz and 3dyz orbitals of the Co atoms are energeticallydegenerated. However, on the surface, because of the reduced coordination number and resulting enhanced electron correlation, the capability of the electron screening is suppressed. As a result, in order to reduce the Coulomb repulsive energy alternating unoccupation among the two 3d orbitals in an antiferromagnetic manner becomes favorable on the surface. We observed
alternately-arranged dumbbell shapes whose shape is quite similar with that of dxz and dyz orbitals looking from the z direction, proving the existence of the orbital order. In a technical point of view of STM, observing d orbitals is not an easy task
because of their localized nature near the core. Since STM detects wave functions of sample surface by the probe tip, states that
† Joint research with outside partners.

ISSP Activity Report 2017165

decay long from the surface are probed more efficiently than quickly decaying states. In fact, on the Co-terminated surface weobserved round-shaped Co atoms arranged in a square lattice in standard tunneling conditions, which obviously originate froms-derived states of Co. In order to observe the d orbitals, we intentionally locate the tip near the surface almost touching to thesurface but still in the tunneling regime, and successfully observed their ordering, which had not been achieved before. In 2017,
we also performed collaborative research works with in-house, domestic, and oversea groups, some of which were published inhigh-impact journals. We have obtained STM images of a monolayer boron film called borophene in collaboration with Prof.
Iwao Matsuda, ISSP, and Fe phthalocyanine molecules adsorbed on silicene in collaboration with Prof. Yamada-Takamura,
JAIST and Prof. Hirjibehedin, University College London. We also performed study on atomically controlled point contact
formation with Prof. Sakai, Kyoto University.
1.

†Break voltage of Au single-atom contacts formed by junction closure: S. Wakasugi, S. Kurokawa, H. Kim, Y. Hasegawa

2.

Role of the substrate in the formation of chiral magnetic structures driven by the interfacial Dzyaloshinskii-Moriya
interaction: M. Haze, Y. Yoshida and Y. Hasegawa, Phys. Rev. B 95 (2017) 060415(1-5).

3.

†*Dirac Fermions in Borophene: B. Feng, O. Sugino, R.-Y. Liu, J. Zhang, R. Yukawa, M. Kawamura, T. Iimori, H. Kim,

and A. Sakai, J. Appl. Phys. 121 (2017) 244304(1-8).

Y. Hasegawa, H. Li, L. Chen, K. Wu, H. Kumigashira, F. Komori, T.-C. Chiang, S. Meng and I. Matsuda, Phys. Rev.
Lett. 118 (2017) 096401(1-6).
4.

†Guided Molecular Assembly on a Locally Reactive 2D Material: B. Warner, T. G. Gill, V. Caciuc, N. Atodiresei,

5.

Experimental verification of the rotational type of chiral spin spiral structures by spin-polarized scanning tunnelingmicroscopy: M. Haze, Y. Yoshida and Y. Hasegawa, Sci. Rep. 7 (2017) 13269(1-5).

6.

Atomic-scale visualization of surface-assisted orbital order: H. Kim, Y. Yoshida, C.-C. Lee, T.-R. Chang, H.-T. Jeng,
H. Lin, Y. Haga, Z. Fisk and Y. Hasegawa, Sci. Adv. 3 (2017) eaao0362(1-5).

A. Fleurence, Y. Yoshida, Y. Hasegawa, S. Blügel, Y. Yamada-Takamura and C. F. Hirjibehedin, Adv. Mater. 29 (2017)1703929(1-7).

Lippmaa group
The main research topics for this year concerned energy conversion materials used for photoelectrochemical water splitting. We
studied the initial growth phase of Ir:SrTiO3 and found that nanoscale Ir-rich clusters nucleate at the beginning of film growth,
ultimately leading to macroscopic segregation of metal nanopillars. We also studied the growth characteristics of IrO2 films,
mapping the stability phase diagram for Ir oxides and worked on fabricating a potential topological pyrochlore iridate phase,
Pr2Ir2O7.
1.

自己組織的に成長する単結晶性酸化物ナノ構造の新展開ー磁性体ナノ結晶とナノコンポジット水分解光電極を開発ー : 高橋
竜太 , リップ マーミック , 固体物理 52 (2017) 105-116.

2.

Hole trap state analysis in SrTiO3: N. Osawa, R. Takahashi and M. Lippmaa, Appl. Phys. Lett. 110 (2017) 263902(1-5).

3.

Microstructure analysis of IrO2 thin films: X. Hou, R. Takahashi, T. Yamamoto and M. Lippmaa, J. Cryst. Growth 462(2017) 24-28.

4.

†Combinatorial screening of halide perovskite thin films and solar cells by mask-defined IR laser molecular beam

epitaxy: K. Kawashima, Y. Okamoto, O. Annayev, N. Toyokura, R. Takahashi, M. Lippmaa, K. Itaka, Y. Suzuki,
N. Matsuki and H. Koinuma, Sci. Tech. Adv. Mater. 18 (2017) 307-315.
5.

Intrinsic Superhydrophilicity of Titania-Terminated Surfaces: S. Kawasaki, E. Holmström, R. Takahashi, P. Spijker,
A. S. Foster, H. Onishi and M. Lippmaa, J. Phys. Chem. C 121 (2017) 2268-2275.

6.

†Strain induced atomic structure at Ir-doped LaAlO /SrTiO interface: M. Lee, R. Arras, B. Warot-Fonrose, T. Hungria,
33

M. Lippmaa, H. Daimon and M. J. Casanove, Phys. Chem. Chem. Phys. 19 (2017) 28676-28683.

7.

*Dielectric anomalies and interactions in the three-dimensional quadratic band touching Luttinger semimetal Pr Ir O :
2 2 7

8.

Magnetic and Magnetodielectric Properties of Epitaxial Iron Vanadate Thin Films: D. Zhou, R. Takahashi, Y. Zhou, D.
Kim, V. K. Suresh, Y.-H. Chu, Q. He, P. Munroe, M. Lippmaa, J. Seidel and N. Valanoor, Adv. Electron. Mater. 3 (2017)
1600295(1-10).

9.

Thermally Stable Sr2RuO4 Electrode for Oxide Heterostructures: R. Takahashi and M. Lippmaa, ACS Appl. Mater.
Interfaces 9 (2017) 21314–21321.

B. Cheng, T. Ohtsuki, D. Chaudhuri, S. Nakatsuji, M. Lippmaa and N. P. Armitage, Nat. Commun. 8 (2017) 2097(1-6).

* Joint research among groups within ISSP.

166

ISSP Activity Report 201710. Pyroelectric detection of ferroelectric polarization in magnetic thin films: R. Takahashi and M. Lippmaa, Jpn. J. Appl.
Phys. 57 (2018) 0902A1.
11. †Noble metal nanocluster formation in epitaxial perovskite thin films: M. Lee, R. Arras, R. Takahashi, B. WarotFonrose, H. Daimon, M.-J. Casanove and M. Lippmaa, ACS Omega 3 (2018) 2169-2173.
12. 酸化物半導体中に自己組織化した金属ナノピラーによる高効率・水分解光電極反応 : 川崎 聖治 , 高橋 竜太 , リップマー ミッ
ク , 応用物理 87 (2018) 366-369.

Functional Materials Group
Yoshinobu group
We conducted several research projects in the fiscal year 2017: (1) Systematic study of the activation and hydrogenation of CO2
on Cu model catalysts by AP-XPS, IRAS, and TPD. (2) The surface chemistry of formic acid on Cu model catalysts studied by
SR-PES, IRAS and TPD. (3) Spectroscopic characterization of Pd-Cu and Pd-Ag surfaces by XPS. (4) Spectroscopic characterization of adsorption and thermal processes of NO on silicone/ZrB2/Si(111) using SR-XPS. (5) LT-STM study of Zn on
Cu(997). (6) Independently driven four-probe conductivity measurement of organic thin films and organic single crystals.
1.

†Direct observation of the electron-phonon coupling between empty states in graphite via high-resolution electron

2.

Highly anisotropic mobility in solution processed TIPS-pentacene film studied by independently driven four GaIn
probes: S. Yoshimoto, K. Takahashi, M. Suzuki, H. Yamada, R. Miyahara, K. Mukai and J. Yoshinobu, Appl. Phys. Lett.
111 (2017) 073301(1-4).

3.

CO2 adsorption on the copper surfaces: van der Waals density functional and TPD studies: F. Muttaqien, Y. Hamamoto,I. Hamada, K. Inagaki, Y. Shiozawa, K. Mukai, T. Koitaya, S. Yoshimoto, J. Yoshinobu and Y. Morikawa, J. Chem. Phys.
147 (2017) 094702(1-8).

4.

†Electronic states and growth modes of Zn atoms deposited on Cu(111) studied by XPS, UPS and DFT: T. Koitaya,

energy loss spectroscopy: S.-I. Tanaka, K. Mukai and J. Yoshinobu, Phys. Rev. B 95 (2017) 165408(1-6).

Y. Shiozawa, Y. Yoshikura, K. Mukai, S. Yoshimoto, S. Torii, F. Muttaqien, Y. Hamamoto, K. Inagaki, Y. Morikawa andJ. Yoshinobu, Surf. Sci. 663 (2017) 1–10.
5.

*Adsorption

6.

Systematic Study of Adsorption and the Reaction of Methanol on Three Model Catalysts: Cu(111), Zn–Cu(111), andOxidized Zn–Cu(111): T. Koitaya, Y. Shiozawa, Y. Yoshikura, K. Mukai, S. Yoshimoto and J. Yoshinobu, J. Phys. Chem.
C 121 (2017) 25402-25410.

7.

†*Strong Hydrogen Bonds at the Interface between Proton-Donating and -Accepting Self-Assembled Monolayers onof CO2 on Graphene: A Combined TPD, XPS, and vdW-DF Study: K. Takeuchi, S. Yamamoto,Y. Hamamoto, Y. Shiozawa, K. Tashima, H. Fukidome, T. Koitaya, K. Mukai, S. Yoshimoto, M. Suemitsu, Y. Morikawa,J. Yoshinobu and I. Matsuda, J. Phys. Chem. C 121 (2017) 2807-2814.

Au(111): H. S. Kato, S. Yoshimoto, A. Ueda, S. Yamamoto, Y. Kanematsu, M. Tachikawa, H. Mori, J. Yoshinobu and
I. Matsuda, Langmuir 34 (2018) 2189-2197.
8.

Initial gas exposure effects on monolayer pentacene field-effect transistor studied using four gallium indium probes:
S. Yoshimoto, R. Miyahara, Y. Yoshikura, J. Tang, K. Mukai and J. Yoshinobu, Org. Electron. 54 (2018) 34-39.

Akiyama group
In 2017, we started fabrication of 1035nm InGaAs laser diodes for short and intense pulse generation via gain switching. In
parallel, we studied pico- and femto-second short-pulse generation and pulse dynamics in GaAs, GaN, and other semiconductor
gain-switched lasers via optical pumping and current injection. We studied single- and multi-junction solar cells by absoluteelectroluminescence-efficiency measurement methods, and via time-resolved photo-emission spectroscopy, we studied photovoltage dynamics solar cells after impulsive optical excitations. We made computational studies with quantum-chemistry andmolecular-dynamics calculations on oxyluciferins and caged-luciferins.
1.

Anomalous Metal Phase Emergent on the Verge of an Exciton Mott Transition: F. Sekiguchi, T. Mochizuki, C. Kim,
H. Akiyama, L. N. Pfeiffer, K. W. West and R. Shimano, Phys. Rev. Lett. 118 (2017) 067401(1-6).

† Joint research with outside partners.

ISSP Activity Report 2017

167

2.

Sensitive monitoring of photocarrier densities in the active layer of a photovoltaic device with time-resolved terahertz
reflection spectroscopy: G. Yamashita, E. Matsubara, M. Nagai, C. Kim, H. Akiyama, Y. Kanemitsu and M. Ashida,Appl. Phys. Lett. 110 (2017) 071108(1-5).

3.

"Visible" 5d orbital states in a pleochroic oxychloride: D. Hirai, T. Yajima, D. Nishio-Hamane, C. Kim, H. Akiyama,
M. Kawamura, T. Misawa, N. Abe, T.-H. Arima and Z. Hiroi, J. Am. Chem. Soc. 139 (2017) 10784-10789.

4.

Picosecond tunable gain-switched blue pulses from GaN laser diodes with nanosecond current injections: S. Chen,
T. Nakamura, T. Ito, H. Nakamae, X. Bao, G. Weng, X. Hu, M. Yoshita, H. Akiyama, J. Liu, M. Ikeda and H. Yang, Opt.
Express 25 (2017) 13046-13054.

5.

Effect of dynamical fluctuations of hydration structures on the absorption spectra of oxyluciferin anions in aqueous
solution: M. Hiyama, M. Shiga, N. Koga, O. Sugino, H. Akiyama and Y. Noguchi, Phys. Chem. Chem. Phys. 19 (2017)
10028-10035.

6.

Biexciton Emission From Single Quantum-Confined Structures in N-Polar (000-1) InGaN/GaN Multiple Quantum
Wells: K. Takamiya, S. Yagi, H. Yaguchi, H. Akiyama, K. Shojiki, T. Tanikawa and R. Katayama, Phys. Status Solidi B
17 (2017) 1700454(1-4).

7.

Broadband tunable integrated CMOS pulser with 80-ps minimum pulse width for gain-switched semiconductor lasers:
S. Chen, S. Diao, P. Li, T. Nakamura, M. Yoshita, G. Weng, X. Hu, Y. Shi, Y. Liu and H. Akiyama, Sci. Rep. 7 (2017)
6878(1-8).

8.

Theoretical insights into the effect of pH values on oxidation processes in the emission of firefly luciferin in aqueous
solution: M. Hiyama, H. Akiyama and N. Koga, Luminescence 32 (2017) 1100-1108.

9.

Diagnosis of GaInAs/GaAsP multiple quantum well solar cells with Bragg reflectors via absolute electroluminescenc:
L. Zhu, M. Yoshita, J. Tsai, Y. Wang, C. Hong, G. Chi, C. Kim, P. Yu and H. Akiyama, IEEE J. Photovolt. 7 (2017) 781 786.

10. Absolute Electroluminescence Imaging Diagnosis of GaAs Thin-film Solar Cells: X. Hu, T. Chen, J. Xue, G. Weng,
S. Chen, H. Akiyama and Z. Zhu, IEEE Photon. J. 9 (2017) 8400409(1-9).
11. Coherent detection of THz-induced sideband emission from excitons in the nonperturbative regime: K. Uchida,
T. Otobe, T. Mochizuki, C. Kim, M. Yoshita, K. Tanaka, H. Akiyama, L. N. Pfeiffer, K. W. West and H. Hirori, Phys.
Rev. B 97 (2018) 165122.
12. Analysis of future generation solar cells and materials: M. Yamaguchi, L. Zhu, H. Akiyama, Y. Kanemitsu, H. Tampo,
H. Shibata, K.-H. Lee, K. Araki and N. Kojima, Jpn. J. Appl. Phys. 57 (2018) 04FS03(1-6).
13. Terahertz field-induced ionization and perturbed free induction decay of excitons in bulk GaAs: Y. Murotani,
M. Takayama, F. Sekiguchi, C. Kim, H. Akiyama and R. Shimano, J. Phys. D: Appl. Phys. 51 (2018) 114001(1-10).
14. Effect of interaction between the internal cavity and external cavity on beam properties in a spectrally beam combined
system: Z. Wu, T. Ito, H. Akiyama and B. Zhang, J. Opt. Soc. Am. A 35 (2018) 772-778.
15. Absolute bioluminescence imaging at the single-cell on an atto-Watt level: T. Enomoto, H. Kubota, K. Mori,
M. Shimogawara, M. Yoshita and H. Akiyama, BioTechniques (2018), accepted for publication.

Sugino group
We have made progress in functional matter research of (1) electrocatalysis, (2) oxygen solid, (3) hidroxyapatite, (4)bio-luminescence, and (5) monolayer Dirac materials. We have also developed methods for (a) many-body Green's function
calculation and (b) tensor decomposition of many-body wave function.
1.

†Erratum: Improved modeling of electrified interfaces using the effective screening medium method [Phys. Rev. B 88 ,2.

*First-principles description of van der Waals bonded spin-polarized systems using the vdW-DF+U method: Application

3.

†*Dirac Fermions in Borophene: B. Feng, O. Sugino, R.-Y. Liu, J. Zhang, R. Yukawa, M. Kawamura, T. Iimori, H. Kim,

155427 (2013)]: I. Hamada, O. Sugino, N. Bonnet and M. Otani, Phys. Rev. B 95 (2017) 119901 (1-2).

to solid oxygen at low pressure: S. Kasamatsu, T. Kato and O. Sugino, Phys. Rev. B 95 (2017) 235120 (1-11).

Y. Hasegawa, H. Li, L. Chen, K. Wu, H. Kumigashira, F. Komori, T.-C. Chiang, S. Meng and I. Matsuda, Phys. Rev.
Lett. 118 (2017) 096401 (1-6).
4.

* ホウ素単原子シート「ボロフェン」：金属性とディラックフェルミオン : F. Baojie, 松田 巌 , 固体物理 52 (2017) 385-393.

* Joint research among groups within ISSP.

168

ISSP Activity Report 2017

5.

Molecular size insensitivity of optical gap of [n] cycloparaphenylenes (n= 3-16): Y. Noguchi and O. Sugino, J. Chem.
Phys. 146 (2017) 144304(1-7).

6.

Quantitative characterization of exciton from GW +Bethe-Salpeter calculation: D. Hirose, Y. Noguchi and O. Sugino,
J. Chem. Phys. 146 (2017) 044303(1-10).

7.

* ホウ素単原子シート「ボロフェン」: 松田 巌 , パリティ 32 (2017) 50-53.

8.

High-Lying Triplet Excitons of Thermally Activated Delayed Fluorescence Molecules: Y. Noguchi and O. Sugino,
J. Phys. Chem. C 121 (2017) 20687-20695.

9.

†The effect of dynamical fluctuations of hydration structures on the absorption spectra of oxyluciferin anions in an

aqueous solution: M. Hiyama, M. Shiga, N. Koga, O. Sugino, H. Akiyama and Y. Noguchi, Phys. Chem. Chem. Phys.
19 (2017) 10028-10035.
10. †*Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu 2Si: B. Feng, B. Fu,
S. Kasamatsu, S. Ito, P. Cheng, C.-C. Liu, Y. Feng, S. Wu, S. K. Mahatha, P. Sheverdyaeva, P. Moras, M. Arita, O.
Sugino, T.-C. Chiang, K. Shimada, K. Miyamoto, T. Okuda, K. Wu, L. Chen, Y. Yao and I. Matsuda, Nat. Commun. 8(2017) 1007(1-6).
11. * 物質科学、この 1 年「ボロフェンにおけるディラックフェルミオン」: 松田 巌 , パリティ 33 (2018) 36-38.
12. *Discovery of 2D Anisotropic Dirac Cones: B. Feng, J. Zhang, S. Ito, M. Arita, C. Cheng, L. Chen, K. Wu, F. Komori,O. Sugino, K. Miyamoto, T. Okuda, S. Meng and I. Matsuda, Adv. Mater. 30 (2018) 1704025(1-6).
13. First-principles investigation of polarization and ion conduction mechanisms in hydroxyapatite: S. Kasamatsu andO. Sugino, Phys. Chem. Chem. Phys. 20 (2018) 8744.

Quantum Materials Group
Oshikawa group
We studied a wide range of theoretical problems in condensed matter physics and statistical physics. As a novel applicationof anomaly in quantum field theory, we discussed possible gapless critical phases of quantum antiferromagnetic chains withgeneral spin quantum numbers. The critical theory with the exact SU(2) symmetry and the emergent Lorentz invariance has
been classified by the SU(2) Wess-Zumino-Witten (WZW) theories labeled by a natural number called level. We found that,in the presence of the translation symmetry, even- and odd-level WZW theories can be only realized in integer- and half-oddinteger spin chains, respectively. This follows from an anomaly matching and can be regarded as a field-theory manifestation of
the Lieb-Schultz-Mattis constraint. The present result leads to a novel concept of "symmetry-protected critical phases".
1.

†Capacity of entanglement and the distribution of density matrix eigenvalues in gapless systems: Y. O. Nakagawa and

2.

†Crystalline Kitaev spin liquids: M. G. Yamada, V. Dwivedi and M. Hermanns, Phys. Rev. B 96 (2017) 155107(1-15).

3.

†Encoding orbital angular momentum of light in magnets: H. Fujita and M. Sato, Phys. Rev. B 96 (2017) 060407(R)S. Furukawa, Phys. Rev. B 96 (2017) 205108(1-8).

(1-6).
4.

†Finite-size scaling of the Shannon-Rényi entropy in two-dimensional systems with spontaneously broken continuous

5.

Theory of electron spin resonance in one-dimensional topological insulators with spin-orbit couplings: Detection ofedge states: Y. Yao, M. Sato, T. Nakamura, N. Furukawa and M. Oshikawa, Phys. Rev. B 96 (2017) 205424(1-10).

6.

†Ultrafast generation of skyrmionic defects with vortex beams: Printing laser profiles on magnets: H. Fujita and7.

Designing Kitaev Spin Liquids in Metal-Organic Frameworks: M. G. Yamada, H. Fujita and M. Oshikawa, Phys. Rev.
Lett. 119 (2017) 057202(1-6).

8.

†Symmetry Protection of Critical Phases and a Global Anomaly in 1+1 Dimensions: S. C. Furuya and M. Oshikawa,symmetry: G. Misguich, V. Pasquier and M. Oshikawa, Phys. Rev. B 95 (2017) 195161(1-13).

M. Sato, Phys. Rev. B 95 (2017) 054421(1-12).

Phys. Rev. Lett. 118 (2017) 021601(1-5).

† Joint research with outside partners.

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9.

†Numerical calculations on the relative entanglement entropy in critical spin chains: Y. O. Nakagawa and T. Ugajin,

J. Stat. Mech. 2017 (2017) 093104(1-16).

10. Signatures of Dirac Cones in a DMRG Study of the Kagome Heisenberg Model: Y.-C. He, M. P. Zaletel, M. Oshikawa
and F. Pollmann, Phys. Rev. X 7 (2017) 031020(1-16).
11. Construction of Hamiltonians by supervised learning of energy and entanglement spectra: H. Fujita, Y. O. Nakagawa,S. Sugiura and M. Oshikawa, Phys. Rev. B 97 (2018) 075114 (1-12).
12. †Particle statistics, frustration, and ground-state energy: W. Nie, H. Katsura and M. Oshikawa, Phys. Rev. B 97 (2018)125153.
13. Fulde-Ferrell state in a ferromagnetic chiral superconductor with magnetic domain walls: Y. Tada, Physical Review B 97(2018) 014519.
14. Decay of superconducting correlations for gauged electrons in dimensions D <= 4: Y. Tada and T. Koma, Journal of
Mathematical Physics 59 (2018) 031905.

Nakatsuji group
Our group explores ground state properties and spintronic functions of novel quantum phases and phase transitions in rareearth and transition metal based compounds. The followings are some relevant results obtained in 2017. (1) We discovered theanomalous Nernst effect for the first time in an antiferromagnet. Strikingly, the effect in the antiferromagnet Mn 3Sn is foundmore than 100 times larger than the estimate based on its magnetization. (2) We discovered the first example of a Weyl magnet.
In particular, we found strong experimental evidence for the Weyl fermions in the antiferromagnet Mn3Sn. (3) We discovered
the magneto optical Kerr effect for the first time in an antiferromagnetic metal. We observed a large zero-field Kerr rotation
angle ~ 20 mdeg and a clear square hysteresis loop in Mn3Sn at room temperature by the magneto-optical Kerr effect, indicating
the ferroic ordering of magnetic octupoles. (4) We discovered the first example of a quantum valence transition and its quantum
criticality in a metal, in particular, in the mixed valent system a-YbAl1-xFexB4. (5) We observed a very large dielectric constantdue to the strong correlation effects in the Luttinger semimetal state of Pr2Ir2O 7 using the thin films.
1.

†*Lifetime-Broadening-Suppressed X-ray Absorption Spectrum of β-YbAlB Deduced from Yb 3d → 2p Resonant X-ray
4

Emission Spectroscopy: N. Kawamura, N. Kanai, H. Hayashi, Y. H. Matsuda, M. Mizumaki, K. Kuga, S. Nakatsuji and
S. Watanabe, J. Phys. Soc. Jpn. 86 (2017) 014711(1-7).
2.

Frustrated magnetism in the Heisenberg pyrochlore antiferromagnets AYb2X4 (A = Cd, Mg, X = S, Se): T. Higo, K.
Iritani, M. Halim, W. Higemoto, T. U. Ito, K. Kuga, K. Kimura and S. Nakatsuji, Phys. Rev. B 95 (2017) 174443(1-7).

3.

Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2O7: J. -J. Wen,
S. M. Koohpayeh, K. A. Ross, B. A. Trump, T. M. McQueen, K. Kimura, S. Nakatsuji, Y. Qiu, D. M. Pajerowski, J. R.
D. Copley and C. L. Broholm, Phys. Rev. Lett. 118 (2017) 107206(1-5).

4.

*Thermal Hall Effect in a Phonon-Glass Ba CuSb O : K. Sugii, M. Shimozawa, D. Watanabe, Y. Suzuki, M. Halim,
3
2 9

5.

*Anomalous Nernst effect in a microfabricated thermoelectric element made of chiral antiferromagnet Mn Sn:
36.

反強磁性体における巨大異常ホール効果 : 中辻 知 , 応用物理 86 (2017) 310-314.

7.

Large spontaneous Hall effets in chiral topological magnets: S. Nakatsuji, T. Higo, M. Ikhlas, T. Tomita and Z. Tian,
Philos. Mag. 97 (2017) 2815-2827.

8.

*Large anomalous Nernst effect at room temperature in a chiral antiferromagnet: M. Ikhlas, T. Tomita, T. Koretsune,

9.

*Orthogonal magnetization and symmetry breaking in pyrochlore iridate Eu Ir O : T. Liang, T. H. Hsieh, J. J. Ishikawa,
2 2 7

M. Kimata, Y. Matsumoto, S. Nakatsuji and M. Yamashita, Phys. Rev. Lett. 118 (2017) 145902(1-5).

H. Narita, M. Ikhlas, M. Kimata, A. A. Nugroho, S. Nakatsuji1 and Y. Otani, Appl. Phys. Lett. 111 (2017) 202404(1-5).

M.-T. Suzuki, D. Nishio-Hamane, R. Arita, Y. Otani and S. Nakatsuji, Nature Phys. 13 (2017) 1085-1090.
S. Nakatsuji, L. Fu and N. P. Ong, Nature Phys. 13 (2017) 599-603.

10. Anisotropic Thermal Expansion of α-YbAlB4: Y. Matsumoto, K. Kuga, T. Tomita, R. Küchler and S. Nakatsuji, J. Phys.:Conf. Ser. 807 (2017) 022005(1-6).
11. Specific heat and electrical resistivity at magnetic fields in antiferromagnetic heavy fermion CeAl2: T. Ebihara,
M. Tsuchiya, Y. Saitoh, J. Jatmika, M. Tsujimoto, Y. Shimura, Y. Matsumoto and S. Nakatsuji, J. Phys.: Conf. Ser. 807(2017) 012011(1-6).

* Joint research among groups within ISSP.

170

ISSP Activity Report 201712. *Dielectric anomalies and interactions in the three-dimensional quadratic band touching Luttinger semimetal Pr2Ir2O7:
B. Cheng, T. Ohtsuki, D. Chaudhuri, S. Nakatsuji, M. Lippmaa and N. P. Armitage, Nat. Commun. 8 (2017) 2097(1-6).
13. *Evidence for magnetic Weyl fermions in a correlated metal: K. Kuroda, T. Tomita, M. -T. Suzuki, C. Bareille,
A. A. Nugroho, P. Goswami, M. Ochi, M. Ikhlas, M. Nakayama, S. Akebi, R. Noguchi, R. Ishii, N. Inami, K. Ono,
H. Kumigashira, A. Varykhalov, T. Muro, T. Koretsune, R. Arita, S. Shin, T. Kondo and S. Nakatsuji, Nature Mater. 16(2017) 1090-1095.
14. Valence fluctuating compound α-YbAlB4 studied by 174Yb Mössbauer spectroscopy and X-ray diffraction usingsynchrotron radiation: M. Oura, S. Ikeda, R. Masuda, Y. Kobayashi, M. Seto, Y. Yoda, N. Hirao, S. I. Kawaguchi,
Y. Ohishi, S. Suzuki, K. Kuga, S. Nakatsuji and H. Kobayashi, Physica B 536 (2018) 162-164.
15. *Kondo hybridization and quantum criticality in β−YbAlB4 by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama, K.
Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).
16. Magnetic Excitations across the Metal-Insulator Transition in the Pyrochlore Iridate Eu2Ir2O7: S. H. Chun, B. Yuan,
D. Casa, J. Kim, C.-Y. Kim, Z. Tian, Y. Qiu, S. Nakatsuji and Y.-J. Kim, Phys. Rev. Lett. 120 (2018) 177203.
17. Discovery of Emergent Photon and Monopoles in a Quantum Spin Liquid: Y. Tokiwa, T. Yamashita, D. Terazawa,
K. Kimura, Y. Kasahara, T. Onishi, Y. Kato, M. Halim, P. Gegenwart, T. Shibauchi, S. Nakatsuji, E.-G. Moon and
Y. Matsuda, Journal of the Physical Society of Japan 87 (2018) 064702.
18. Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal: T. Higo,
H. Man, D. B. Gopman, L. Wu, T. Koretsune, O. M. J. van &. Erve, Y. P. Kabanov, D. Rees, Y. Li, M.-T. Suzuki,
S. Patankar, M. Ikhlas, C. L. Chien, R. Arita, R. D. Shull and J. O. &. S. Nakatsuji, Nature Photon. 12 (2018) 73-78.
19. *X-Ray Absorption Spectroscopy of 4f Compounds and Future Directions Toward Time-resolved Measurements:
H. Wadati, K. Takubo, T. Tsuyama, Y. Yokoyama, K. Yamamoto, Y. Hirata, T. Ina, K. Nitta, M. Mizumaki, T. Togashi,
S. Suzuki, Y. Matsumoto and S. Nakatsuji, Adv. X-Ray. Chem. Anal., Japan 49 (2018) 169-175.
20. †*Quantum valence criticality in a correlated metal: K. Kuga, Y. Matsumoto, M. Okawa, S. Suzuki, T. Tomita,
K. Sone, Y. Shimura, T. Sakakibara, D. Nishio-Hamane, Y. Karaki, Y. Takata, M. Matsunami, R. Eguchi, M. Taguchi,
A. Chainani, S. Shin, K. Tamasaku, Y. Nishino, M. Yabashi, T. Ishikawa and S. Nakatsuji, Sci. Adv. 4 (2018) eaao3547(1-6).
21. Relaxation calorimetry at very low temperatures for systems with internal relaxation: Y. Matsumoto and S. Nakatsuji,
Review of Scientific Instruments 89 (2018) 033908.

Materials Design and Characterization Laboratory
Hiroi group
A new oxychloride, Ca3ReO5Cl2, is found, which shows unusually distinct pleochroism; that is, the material exhibits different
colors depending on the viewing direction. This pleochroism is a consequence of the coincidental complex crystal field splitting of the 5d orbitals of the Re6+ ion in a square-pyramidal coordination of low symmetry in the energy range of the visible
spectrum. Since the relevant d–d transitions show characteristic polarization dependence according to the optical selection rule,the orbital states are “visible” in Ca3ReO5Cl2. The superconducting pyrochlore oxide Cd2Re2O7 is revisited with a particularemphasis on the sample-quality issue. Recently, it has attracted increasing attention as a candidate spin–orbit coupled metal(SOCM), in which specific Fermi liquid instability is expected to lead to an odd-parity order with spontaneous inversionsymmetry breaking and parity-mixing superconductivity.
1.

* Collinear

2.

*J -J square-lattice Heisenberg antiferromagnets with 4d1 spins AMoOPO Cl (A=K, Rb): H. Ishikawa, N. Nakamura,
1 2
4

3.

spin density wave order and anisotropic spin fluctuations in the frustrated J 1-J 2 chain magnet
NaCuMoO4(OH): K. Nawa, M. Yoshida, M. Takigawa, Y. Okamoto and Z. Hiroi, Phys. Rev. B 96 (2017) 174433(1-9).

M. Yoshida, M. Takigawa, P. Babkevich, N. Qureshi, H. M. Rønnow, T. Yajima and Z. Hiroi, Phys. Rev. B 95 (2017)064408(1-9).
*Magnetic transitions under ultrahigh magnetic fields of up to 130 T in the breathing pyrochlore antiferromagnet

LiInCr4O8: Y. Okamoto, D. Nakamura, A. Miyake, S. Takeyama, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Phys.
Rev. B 95 (2017) 134438(1-5).

† Joint research with outside partners.

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4.

*Phase diagram of multiferroic KCu As O (OD) : G. J. Nilsen, V. Simonet, C. V. Colin, R. Okuma, Y. Okamoto,
3 2 7
3

5.

*Spin dynamics in the high-field phases of volborthite: M. Yoshida, K. Nawa, H. Ishikawa, M. Takigawa, M. Jeong,

M. Tokunaga, T. C. Hansen, D. D. Khalyavin and Z. Hiroi, Phys. Rev. B 95 (2017) 214415(1-10).

S. Krämer, M. Horvatic, C. Berthier, K. Matsui, T. Goto, S. Kimura, T. Sasaki, J. Yamaura, H. Yoshida, Y. Okamoto and
Z. Hiroi, Phys. Rev. B 96 (2017) 180413(R)(1-5).
6.

Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7: J.-I. Yamaura,
K. Takeda, Y. Ikeda, N. Hirao, Y. Ohishi, T. C. Kobayashi and Z. Hiroi, Phys. Rev. B 95 (2017) 020102(1-5).

7.

*Weak

8.

*Classical Spin Nematic Transition in LiGa
0.95In0.05Cr4O8: R. Wawrzynczak, Y. Tanaka, M. Yoshida, Y. Okamoto,

9.

†*Pressure-induced Freeze Concentration of Alanine Aqueous Solution as a Novel Field of Chemical Reaction:

ferromagnetic order breaking the threefold rotational symmetry of the underlying kagome lattice in
CdCu3(OH)6(NO3)2⋅H2O: R. Okuma, T. Yajima, D. Nishio-Hamane, T. Okubo and Z. Hiroi, Phys. Rev. B 95 (2017)094427(1-8).
P. Manuel, N. Casati, Z. Hiroi, M. Takigawa and G. J. Nilsen, Phys. Rev. Lett. 119 (2017) 087201(1-6).

S. Takahashi, H. Kagi, C. Fujimoto, A. Shinozaki, H. Gotou, T. Nishida and K. Mimura, Chem. Lett. 46 (2017) 334-337.

10. *Topochemical Crystal Transformation from a Distorted to a Nearly Perfect Kagome Cuprate: H. Ishikawa, T. Yajima,
A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Chem. Mater. 29 (2017) 6719-6725.
11. *Large anomalous Nernst effect at room temperature in a chiral antiferromagnet: M. Ikhlas, T. Tomita, T. Koretsune,
M.-T. Suzuki, D. Nishio-Hamane, R. Arita, Y. Otani and S. Nakatsuji, Nature Phys. 13 (2017) 1085-1090.
12. †*Hydrogenation of iron in the early stage of Earth’s evolution: R. Iizuka-Oku, T. Yagi, H. Gotou, T. Okuchi, T. Hattoriand A. Sano-Furukawa, Nat. Commun. 8 (2017) 14096(1-7).
13. Robust ferromagnetism carried by antiferromagnetic domain walls: H. T. Hirose, J.-I. Yamaura and Z. Hiroi, Sci. Rep. 7(2017) 42440(1-7).
14. *Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan: D. Nishio–hamane, K. Momma, M. Ohnishi, N. Shimobayashi, R. Miyawaki, N. Tomita,
R. Okuma, A. R. Kampf and T. Minakawa, Mineral. Mag. 81 (2017) 485-498.
15. †*High Pressure Experiments on Metal-Silicate Partitioning of Chlorine in a Magma Ocean: Implications for Terrestrial
Chlorine Depletion: H. Kuwahara, H. Gotou, T. Shinmei, N. Ogawa, A. Yamaguchi, N. Takahata, Y. Sano, T. Yagi and
S. Sugita, Geochem. Geophys. Geosyst. 18 (2017) 3929-3945.
16. *High-pressure synthesis of tetragonal iron aluminide FeAl2: K. Tobita, N. Sato, Y. Katsura, K. Kitahara, D. NishioHamane, H. Gotou and K. Kimura, Scr. Mater. 141 (2017) 107-110.
17. *Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO3 under High Pressure: K. Oka,
T. Yamauchi, S. Kanungo, T. Shimazu, K. Oh-ishi, Y. Uwatoko, M. Azuma and T. Saha-Dasgupta, J. Phys. Soc. Jpn. 87(2018) 024801(1-6).
18. †*Improvement of coercivity in Nd-Fe-B nanocomposite magnets: T. Saito, S. Nozaki and D. Nishio-Hamane, J. Magn.
Magn. Mater. 445 (2018) 49-52.
19. *Devil's staircase of odd-number charge order modulations in divalent β-vanadium bronzes under pressure: T. Yamauchi,
H. Ueda, K. Ohwada, H. Nakao and Y. Ueda, Phys. Rev. B 97 (2018) 125138.
20. *Magnetic state selected by magnetic dipole interaction in the kagome antiferromagnet NaBa2Mn3F11: S. Hayashida,
H. Ishikawa, Y. Okamoto, T. Okubo, Z. Hiroi, M. Avdeev, P. Manuel, M. Hagihala, M. Soda and T. Masuda, Phys. Rev.
B 97 (2018) 054411(1-7).
21. †*High-coercivity SmCo5/α-Fe nanocomposite magnets: T. Saito and D. Nishio-Hamane, J. Alloys Compd. 735 (2018)
218-223.
22. Expanding frontiers in materials chemistry and physics with multiple anions: H. Kageyama, K. Hayashi, K. Maeda,
J. Paul Attfield, Z. Hiroi, J. M. Rondinelli and K. R. Poeppelmeier, Nat. Commun. 9 (2018) 772(1-15).
23. †*Quantum valence criticality in a correlated metal: K. Kuga, Y. Matsumoto, M. Okawa, S. Suzuki, T. Tomita,
K. Sone, Y. Shimura, T. Sakakibara, D. Nishio-Hamane, Y. Karaki, Y. Takata, M. Matsunami, R. Eguchi, M. Taguchi,
A. Chainani, S. Shin, K. Tamasaku, Y. Nishino, M. Yabashi, T. Ishikawa and S. Nakatsuji, Sci. Adv. 4 (2018) eaao3547(1-6).

* Joint research among groups within ISSP.

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ISSP Activity Report 201724. †*Size-controllable gold nanoparticles prepared from immobilized gold-containing ionic liquids on SBA-15: E. N.
Kusumawati, D. Nishio-Hamane and T. Sasaki, Catalysis Today (2017) S0920586117306193, accepted for publication.
25. *Transmission electron microscopy study of the epitaxial association of hedenbergite whiskers with babingtonite:
M. Nagashima and D. Nishio-Hamane, Mineral. Mag. (2018) 1, accepted for publication.

Kawashima group
We have been investigating quantum spin/boson systems and frustrated systems by means of large-scale numerical simulation. We also develop new numerical techniques. Our group's activities of 2017 include: (1) numerical simulation of weak-firstorder phase transition, (2) tensor-network calculation of the frustrated magnet on the star-lattice, (3) development of methods ofcomputing high-order magnetic moments, and (4) tensor-network calculation of spin-orbit coupled systems.
1.

Ground state properties of Na2IrO3 determined from ab initio Hamiltonian and its extensions containing Kitaev andextended Heisenberg interactions: T. Okubo, K. Shinjo, Y. Yamaji, N. Kawashima, S. Sota, T. Tohyama and M. Imada,
Phys. Rev. B 96 (2017) 054434(1-12).

2.

Proposal of a spin-one chain model with competing dimer and trimer interactions: Y.-T. Oh, H. Katsura, H.-Y. Lee andJ. H. Han, Phys. Rev. B 96 (2017) 165126(1-8).

3.

Resonating valence bond states with trimer motifs: H. Lee, Y.-T. Oh, J. H. Han and H. Katsura, Phys. Rev. B 95 (2017)060413(1-4).

4.

Variational Monte Carlo method for fermionic models combined with tensor networks and applications to the holedoped two-dimensional Hubbard model: H.-H. Zhao, K. Ido, S. Morita and M. Imada, Phys. Rev. B 96 (2017)085103(1-16).

5.

Weak ferromagnetic order breaking the threefold rotational symmetry of the underlying kagome lattice in
CdCu3(OH)6(NO3)2 · H2O: R. Okuma, T. Yajima, D. Nishio-Hamane, T. Okubo and Z. Hiroi, Phys. Rev. B 95 (2017)094427(1-8).

6.

Quantum lattice model solver HΦ: M. Kawamura, K. Yoshimi, T. Misawa, Y. Yamaji, S. Todo and N. Kawashima,
Computer Physics Communications 217 (2017) 180-192.

7.

Disordered quantum spin chains with long-range antiferromagnetic interactions: N. Moure, H.-Y. Lee, S. Haas, R. N.
Bhatt and S. Kettemann, Phys. Rev. B 97 (2018) 014206(1-6).

8.

Spin-one bilinear-biquadratic model on a star lattice: H.-Y. Lee* and N. Kawashima, Phys. Rev. B 97 (2018) 205123(1-7).

9.

Tensor renormalization group with randomized singular value decomposition: S. Morita, R. Igarashi, H.-H. Zhao and
N. Kawashima, Phys. Rev. E 97 (2018) 033310(1-6).

10. †*Polymer effects on Kármán vortex: Molecular dynamics study: Y. Asano, H. Watanabe and H. Noguchi, The Journal ofChemical Physics 148 (2018) 144901.

Uwatoko groupWe report the effect of hydrostatic pressure on the electronic state of the antiferromagnet UIrGe, which is isostructural andisoelectronic with the ferromagnetic superconductors UCoGe and URhGe. We constructed a p–T phase diagram and estimatedthe critical pressure pc, where the antiferromagnetism vanishes, as ∼12 GPa. Electrical resistivity measurements have been
performed on the iron-based ladder compounds Ba1−xCsxFe2Se3 (x = 0, 0.25, 0.65, and 1) under high pressure. Metallic
behavior of the electrical conductivity was confirmed in the x = 0.25 and 0.65 samples for pressures greater than 11.3 and14.4 GPa, respectively, with the low-temperature log T upturn being consistent with weak localization of 2D electrons due
to random potential. No metallic conductivity was observed in the parent compounds BaFe2Se3 (x = 0) up to 30.0 GPa and
CsFe2Se3 (x = 1) up to 17.0 GPa. We report pressure-driven superconductivity (SC) in the vicinity of a commensurate chargedensity wave (CCDW) in transition-metal dichalcogenides (TMDs) 1T−TaSe2 by simultaneous resistivity and ac susceptibility.
The findings reveal the interplay of CCDW and SC in 1T−TaSe2 by a clean method, viz., high pressure, and shed light on theunderlying superconducting mechanism in the relevant systems. We study the properties of electronic structure in the high-Tc
phase induced by pressure in bulk FeSe from magnetotransport measurements and first-principles calculations. These resultsin FeSe highlight similarities with high-Tc phases of iron pnictides, constituting a step toward a unified understanding of ironbased superconductivity. The origin of the highly anisotropic superconducting transition in ZrTe3, where the resistance along thea axis, Ra , is reduced at 4 K but those along the b axis, Rb, and c' axis, Rc', are reduced at 2 K, was explored with the applicationof a magnetic field and pressure by the electrical resistance measurements. The reduction in Ra is due to filamentary supercon-† Joint research with outside partners.

ISSP Activity Report 2017173

ductivity (SC) induced by locally bound electron pairs (local pairs), which correspond to bi-polarons, and the transition of Rb
corresponds to the emergence of bulk SC originating from the Cooper pairs triggered by the transfer of the local pairs. We havestudied the temperature-pressure phase diagram of two materials Eu3-xSrxBi2S4F4 (x = 1 and x = 2) by electrical resistivity andmagnetic measurements down to 2 K. Using the Arrhenius equation, we estimate the thermally activated flux flow activationenergy U 0 as 116 K in Eu2SrBi2S4F4 and 39 K in EuSr2Bi2S4F4. At 2 K, DC magnetic susceptibility measurements indicate
S-type paramagnetic behavior. We construct the three-dimensional electronic phase diagram, temperature (T) against pressure(P) and isovalent S-substitution (x), for FeSe1-xSx. The completed phase diagram uncovers that high-Tc superconductivity lies
near both ends of the dome-shaped antiferromagnetic phase, whereas Tc remains low near the nematic critical point.
1.

†Effect of Pressure on Magnetism of UIrGe: J. Pospisil, J. Gouchi, Y. Haga, F. Honda, Y. Uwatoko, N. Tateiwa,

2.

†Pressure-Induced

3.

† Synchrotron

X-ray Diffraction and High-Pressure Electrical Resistivity Studies for High Tc Candidate
Nd3.5Sm0.5Ni3O8: M. Uehara, K. Kobayashi, H. Yamamoto, A. Nakata, K. Wakiya, I. Umehara, J. Gouchi and
Y. Uwatoko, J. Phys. Soc. Jpn. 86 (2017) 114605(1-6).

4.

†Unique Pressure versus Temperature Phase Diagram for Antiferromagnets Eu Ni Ge and EuRhSi : M. Nakashima,
2 3
53
Y. Amako, K. Matsubayashi, Y. Uwatoko, M. Nada, K. Sugiyama, M. Hagiwara, Y. Haga, T. Takeuchi, A. Nakamura,
H. Akamine, K. Tomori, T. Yara, Y. Ashitomi, M. Hedo, T. Nakama and Y. Onuki, J. Phys. Soc. Jpn. 86 (2017) 034708(1-13).

5.

Weak Ferromagnetic Response of d Electrons and Antiferromagnetic Response of π Electrons in TPP[Mn(Pc)(CN)2]2
in Torque Magnetometry Experiments: K. Torizuka, Y. Uwatoko, M. Matsuda, G. Yoshida, M. Kimata and H. Tajima,
J. Phys. Soc. Jpn. 86 (2017) 114709(1-9).

6.

Evidence for pressure-induced node-pair annihilation in Cd3As2: C. Zhang, J. Sun, F. Liu, A. Narayan, N. Li, X. Yuan,
Y. Liu, J. Dai, Y. Long, Y. Uwatoko, J. Shen, S. Sanvito, W. Yang, J. Cheng and F. Xiu, Phys. Rev. B 96 (2017) 155205(1-7).

7.

Pressure-induced bulk superconductivity in a layered transition-metal dichalcogenide 1T-tantalum selenium: B. Wang,
Y. Liu, K. Ishigaki, K. Matsubayashi, J. Cheng, W. Lu, Y. Sun and Y. Uwatoko, Phys. Rev. B 95 (2017) 220501(1-6).

8.

†*Two-carrier

9.

High-Tc Superconductivity in FeSe at High Pressure: Dominant Hole Carriers and Enhanced Spin Fluctuations:J. P. Sun, G. Z. Ye, P. Shahi, J. -Q. Yan, K. Matsuura, H. Kontani, G. M. Zhang, Q. Zhou, B. C. Sales, T. Shibauchi,
Y. Uwatoko, D. J. Singh and J. -G. Cheng, Phys. Rev. Lett. 118 (2017) 147004(1-6).

S. Kambe, S. Nagasaki, Y. Homma and E. Yamamoto, J. Phys. Soc. Jpn. 86 (2017) 044709(1-6).

Metallization in Iron-Based Ladder Compounds Ba 1−xCsxFe2Se3: T. Hawai, C. Kawashima,
K. Ohgushi, K. Matsubayashi, Y. Nambu, Y. Uwatoko, T. J. Sato and H. Takahashi, J. Phys. Soc. Jpn. 86 (2017) 024701(1-4).

analyses of the transport properties of black phosphorus under pressure: K. Akiba, A. Miyake,
Y. Akahama, K. Matsubayashi, Y. Uwatoko and M. Tokunaga, Phys. Rev. B 95 (2017) 115126(1-7).

10. Superconductivity induced by external pressure in Eu3−xSrxBi2S4F4 (x= 1, 2) compounds: M. Kannan, G. K. Selvan,
Z. Haque, G. S. Thakur, B. Wang, K. Ishigaki, Y. Uwatoko, L. C. Gupta, A. K. Ganguli and S. Arumugam, Supercond.
Sci. Technol. 30 (2017) 115011(1-7).
11. Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity: S. Tsuchiya,
K. Matsubayashi, K. Yamaya, S. Takayanagi, S. Tanda and Y. Uwatoko, New J. Phys. 19 (2017) 063004(1-10).
12. †Superconducting, Fermi surface, and magnetic properties in SrTGe3 and EuTGe3 (T: transition metal) with the
Rashba-type tetragonal structure: M. Kakihana, H. Akamine, K. Tomori, K. Nishimura, A. Teruya, A. Nakamura, F.
Honda, D. Aoki, M. Nakashima, Y. Amako, K. Matsubayashi, Y. Uwatoko, T. Takeuchi, T. Kida, M. Hagiwara, Y. Haga,
E. Yamamoto, H. Harima, M. Hedo, T. Nakama and Y. Onuki, J. Alloys Compd. 694 (2017) 439-451.
13. Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15:
Y. Li, Z. Sun, J.-W. Cai, J.-P. Sun, B.-S. Wang, Z.-Y. Zhao, Y. Uwatoko, J.-Q. Yan and J.-G. Cheng, Chin. Phys. Lett. 34(2017) 087201.
14. †Thermal Transformation Arrest Phenomena in Mn2Sb0.9Sn0.1: T. Wakamori, Y. Mitsui, K. Takahashi, R. Y. Umetsu,
Y. Uwatoko, M. Hiroi and K. Koyama, IEEE Magn. Lett. 8 (2017) 1402404(1-4).
15. †Maximizing Tc by tuning nematicity and magnetism in FeSe1−xSx superconductors: K. Matsuura, Y. Mizukami,
Y. Arai, Y. Sugimura, N. Maejima, A. Machida, T. Watanuki, T. Fukuda, T. Yajima, Z. Hiroi, K. Y. Yip, Y. C. Chan,
Q. Niu, S. Hosoi, K. Ishida, K. Mukasa, S. Kasahara, J. -G. Cheng, S. K. Goh, Y. Matsuda, Y. Uwatoko and
T. Shibauchi, Nat. Commun. 8 (2017) 1143(1-6).

* Joint research among groups within ISSP.

174

ISSP Activity Report 201716. *Unique Electronic States in Non-centrosymmetric Cubic Compounds: M. Kakihana, K. Nishimura, Y. Ashitomi,
T. Yara, D. Aoki, A. Nakamura, F. Honda, M. Nakashima, Y. Amako, Y. Uwatoko, T. Sakakibara, S. Nakamura,T. Takeuchi, Y. Haga, E. Yamamoto, H. Harima, M. Hedo, T. Nakama and Y. Onuki, J. Electron. Mater. 46 (2017)3572-3586.
17. Possibility for conventional superconductivity in Sr0.1Bi2Se3 from high-pressure transport studies: K. Manikandan,
Shruti, P. Neha, G. Kalai Selvan, B. Wang, Y. Uwatoko, K. Ishigaki, R. Jha, V. P. S. Awana, S. Arumugam and
S. Patnaik, EPL 118 (2017) 47008(1-6).
18. †Emergence of a new valence-ordered structure and collapse of the magnetic order under high pressure in EuPtP:
A. Mitsuda, S. Manabe, M. Umeda, H. Wada, K. Matsubayashi, Y. Uwatoko, M. Mizumaki, N. Kawamura, K. Nitta,
N. Hirao, Y. Ohishi and N. Ishimatsu, J. Phys.: Condens. Matter 30 (2018) 105603(1-8).
19. Magnetic order of Nd5Pb3 single crystals: J.-Q. Yan, M. Ochi, H. B. Cao, B. Saparov, J.-G. Cheng, Y. Uwatoko, R. Arita,
B. C. Sales and D. G. Mandrus, J. Phys.: Condens. Matter 30 (2018) 135801(1-9).
20. Direct Observation of the Quantum Phase Transition of SrCu2(BO3)2 by High-Pressure and Terahertz Electron Spin
Resonance: T. Sakurai, Y. Hirao, K. Hijii, S. Okubo, H. Ohta, Y. Uwatoko, K. Kudo and Y. Koike, J. Phys. Soc. Jpn. 87(2018) 033701(1-4).
21. Electronic States in EuCu2(Ge1−xSix)2 Based on the Doniach Phase Diagram: W. Iha, T. Yara, Y. Ashitomi, M. Kakihana,
T. Takeuchi, F. Honda, A. Nakamura, D. Aoki, J. Gouchi, Y. Uwatoko, T. Kida, T. Tahara, M. Hagiwara, Y. Haga,
M. Hedo, T. Nakama and Y. Onuki, J. Phys. Soc. Jpn. 87 (2018) 064706(1-14).
22. *Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO3 under High Pressure: K. Oka,
T. Yamauchi, S. Kanungo, T. Shimazu, K. Oh-ishi, Y. Uwatoko, M. Azuma and T. Saha-Dasgupta, J. Phys. Soc. Jpn. 87(2018) 024801(1-6).
23. †Pressure Effect on Magnetic Properties of Weak Itinerant Electron Ferromagnet CrAlGe: S. Yoshinaga, Y. Mitsui, R. Y.
Umetsu, Y. Uwatoko and K. Koyama, J. Phys. Soc. Jpn. 87 (2018) 014701(1-4).
24. High-Tc superconductivity up to 55 K under high pressure in a heavily electron doped Li0.36(NH3)yFe2Se2 single crystal:P. Shahi, J. P. Sun, S. H. Wang, Y. Y. Jiao, K. Y. Chen, S. S. Sun, H. C. Lei, Y. Uwatoko, B. S. Wang and J. -G. Cheng,
Phys. Rev. B 97 (2018) 020508(1-6).
25. Pressure effect on the magnetic properties of the half-metallic Heusler alloy Co2TiSn: I. Shigeta, Y. Fujimoto, R.
Ooka, Y. Nishisako, M. Tsujikawa, R. Y. Umetsu, A. Nomura, K. Yubuta, Y. Miura, T. Kanomata, M. Shirai, J. Gouchi,
Y. Uwatoko and M. Hiroi, Phys. Rev. B 97 (2018) 104414(1-8).
26. *Pressure-induced quantum phase transition in the quantum antiferromagnet CsFeCl3: S. Hayashida, O. Zaharko,
N. Kurita, H. Tanaka, M. Hagihala, M. Soda, S. Itoh, Y. Uwatoko and T. Masuda, Phys. Rev. B 97 (2018) 140405(1-4).
27. †Magnetic Phase Transition of Mn1.9Fe0.1Sb0.9Sn0.1: A. N. Nwodo, R. Kobayashi, T. Wakamori, Y. Matsumoto,Y. Mitsui, R. Y. Umetsu, M. Hiroi, K. Takahashi, Y. Uwatoko and K. Koyama, IEEE Magn. Lett. 9 (2018) 1(1-4).
28. †Quasi-First Order Magnetic Transition in Mn1.9Fe0.1Sb0.9Sn0.1: A. N. Nwodo, R. Kobayashi, T. Wakamori, Y. Matsumoto, Y. Mitsui, M. Hiroi, K. Takahashi, R. Y. Umetsu, Y. Uwatoko and K. Koyama, Mater. Trans. 59 (2018) 348-352.
29. Magnetic and thermodynamic properties of Heusler alloys Ni55Mn26Al19: M. Ito, K. Onda, A. Taira, K. Sonoda,
M. Hiroi and Y. Uwatoko, AIP Advances 8 (2018) 055712.
30. Reemergence of high-Tc superconductivity in the (Li1-xFex)OHFe1-ySe under high pressure: J. P. Sun, P. Shahi, H. X.
Zhou, Y. L. Huang, K. Y. Chen, B. S. Wang, S. L. Ni, N. N. Li, K. Zhang, W. G. Yang, Y. Uwatoko, G. Xing, J. Sun, D. J.
Singh, K. Jin, F. Zhou, G. M. Zhang, X. L. Dong, Z. X. Zhao and J. -G. Cheng, Nat. Commun. 9 (2018) 380(1-7).
31. Anisotropic lattice compression of α- and β-CePdZn: G. Oomi, T. Eto, T. Okada and Y. Uwatoko, Physica B: Condensed
Matter 536 (2018) 293.
32. Fundamental properties of a new samarium compound SmPtSi2: S. Yamaguchi, E. Takahashi, N. Kase, T. Nakano,N. Takeda, K. Matsubayashi and Y. Uwatoko, Physica B: Condensed Matter 536 (2018) 297-299.
33. Magnetic characteristics of polymorphic single crystal compounds DyIr2Si2: K. Uchima, T. Shigeoka and Y. Uwatoko,
Physica B: Condensed Matter 536 (2018) 28.
34. Magnetic properties and effect of pressure on the electronic state of EuCo2Ge2: Y. Ashitomi, M. Kakihana, F. Honda,
A. Nakamura, D. Aoki, Y. Uwatoko, M. Nakashima, Y. Amako, T. Takeuchi, T. Kida, T. Tahara, M. Hagiwara, Y. Haga,
M. Hedo, T. Nakama and Y. Onuki, Physica B: Condensed Matter 536 (2018) 192196.

† Joint research with outside partners.

ISSP Activity Report 2017175

35. Magnetic properties of new antiferromagnetic heavy-fermion compounds, Ce3TiBi5 and CeTi3Bi4: G. Motoyama,
M. Sezaki, J. Gouchi, K. Miyoshi, S. Nishigori, T. Mutou, K. Fujiwara and Y. Uwatoko, Physica B: Condensed Matter
536 (2018) 142-144.
36. Pressure effects on the magnetic and transport properties of the Kondo lattice system Ce3RuSn6: K. Wakiya, T. Tomaki,
M. Kimura, M. Uehara, J. Gouchi, Y. Uwatoko and I. Umehara, Physica B: Condensed Matter 536 (2018) 492-493.
37. Successive magnetic transitions of the pseudo-ternary compounds Ho1-xRxRh2Si2(R=Y, La): T. Shigeoka, K. Uchima
and Y. Uwatoko, Physica B: Condensed Matter 536 (2018) 379-383.
38. Pressure-induced coherent sliding-layer transition in the excitonic insulator Ta 2 NiSe 5: A. Nakano, K. Sugawara,
S. Tamura, N. Katayama, K. Matsubayashi, T. Okada, Y. Uwatoko, K. Munakata, A. Nakao, H. Sagayama, R. Kumai,
K. Sugimoto, N. Maejima, A. Machida, T. Watanuki and H. Sawa, IUCrJ 5 (2018) 158-165.
39. Magnetic and structural properties of Mn1-xCrxAlGe (0< x < 1.0): H. Masumitsu, S. Yoshinaga, Y. Mitsui, R. Y. Umetsu,
M. Hiroi, Y. Uwatoko and K. Koyama, Journal of Magnetism and Magnetic Materials 456 (2018) 104-107.
40. Magnetic relaxation dynamics in thermally arrested Cr-modified Mn2Sb: Y. Mitsui, Y. Matsumoto, Y. Uwatoko, M. Hiroi
and K. Koyama, Journal of Magnetism and Magnetic Materials 461 (2018) 62-68.
41. The formation of bulk β-Al3 Ni phase in eutectic Al-5.69wt%Ni alloy solidified under high pressure: X. H. Wang,
Z. Ran, Z. J. Wei, C. M. Zou, H. W. Wang, J. Gouchi and Y. Uwatoko, Journal of Alloys and Compounds 742 (2018)670-675.

Ozaki group
Motivated by the post-K computer project where the machine is expected to consist of about 10 million CPU cores, we have
tried to develop efficient and accurate O(N) methods whose computational cost is proportional to the number of atoms, while so
far we have already developed an O(N) Krylov subspace and applied the method to a wide variety of problems. A missing ingredient in the O(N) Krylov subspace method is that the method neglects the effect of outer region beyond the truncated cluster.
To take account of the effect of outer region beyond the truncated cluster, we have introduced the self-energy correction, which
is derived from a block formalism for the inverse calculation of a matrix, to evaluation of local Green’s function and performeda series of benchmark calculations. Though the method is theoretically appealing, it turns out that the method is numericallyvery unstable in the process for the self-consistent calculation of local Green’s functions. The analysis implies that the Green’s
functions near the real axis are highly delocalized for systems with metallic bands or denser structures, resulting in the numerical instability. After getting the negative result, we have taken another direction for development of efficient and accurate O(N)methods, and considered how the size of truncated cluster can be enlarged without largely increasing the numerical cost. Ouridea is based on a coarse graining of basis functions which are located in the buffer region of the truncated cluster. To performthe coarse graining, we have developed a novel method to generate localized natural orbitals based on Schur decomposition,and replaced the original basis functions in the buffer region by the localized natural orbitals. A series of benchmark calculations suggests that the O(N) method is a stable and accurate method for not only insulators but also metals. We have further
introduced a multi-level parallelization where atoms, spin, and eigenvalue problem for the truncated cluster are fully parallelizedby MPI. We expect that the parallelized code for the novel method enables us to perform first-principles molecular dynamics
simulations of large-scale systems consisting of ten thousand atoms by making full use of the post-K computer.
1.

Single-particle excitation of core states in epitaxial silicene: C.-C. Lee, J. Yoshinobu, K. Mukai, S. Yoshimoto, H. Ueda,
R. Friedlein, A. Fleurence, Y. Yamada-Takamura and T. Ozaki, Phys. Rev. B 95 (2017) 115437(1-7).

2.

Thermoelectric properties of high power factor sulfide NiSbS and Co substitution system Ni1−xCoxSbS: M. Miyata,
T. Ozaki, S. Nishino and M. Koyano, Jpn. J. Appl. Phys. 56 (2017) 021801(1-6).

3.

Absolute Binding Energies of Core Levels in Solids from First Principles: T. Ozaki and C.-C. Lee, Phys. Rev. Lett. 118(2017) 026401(1-5).

4.

低次スケーリング手法の開発とその応用 : 尾崎 泰助 , 澤田 英明 , 固体物理特集号 621 (2017) 593.

5.

密度汎関数理論による内殻電子束縛エネルギーの第一原理計算 : 尾崎 泰助 , 固体物理特集号 621 (2017) 604.

6.

Transition of the Interface between Iron and Carbide Precipitate From Coherent to Semi-Coherent: H. Sawada,
S. Taniguchi, K. Kawakami and T. Ozaki, Metals 7 (2017) 277(1-13).

7.

Chemical misfit origin of solute strengthening in iron alloys: M. Wakeda, T. Tsuru, M. Kohyama, T. Ozaki, H. Sawada,
M. Itakura and S. Ogata, Acta Mater. 131 (2017) 445-456.

* Joint research among groups within ISSP.

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8.

*Peculiar

9.

Reliability and applicability of magnetic-force linear response theory: Numerical parameters, predictability, and orbital
resolution: H. Yoon, T. J. Kim, J. -H. Sim, S. W. Jang, T. Ozaki and M. J. Han, Phys. Rev. B 97 (2018) 125132.

bonding associated with atomic doping and hidden honeycombs in borophene: C.-C. Lee, B. Feng,
M. D'angelo, R. Yukawa, R.-Y. Liu, T. Kondo, H. Kumigashira, I. Matsuda and T. Ozaki, Phys. Rev. B 97 (2018) 075430(1-5).

10. Li deposition and desolvation with electron transfer at a silicon/propylene-carbonate interface: transition-state and freeenergy profiles by large-scale first-principles molecular dynamics: T. Ohwaki, T. Ozaki, Y. Okuno, T. Ikeshoji, H. Imaiand M. Otani, Phys. Chem. Chem. Phys. 20 (2018) 11586.
11. High-Throughput Screening of Sulfide Thermoelectric Materials Using Electron Transport Calculations with OpenMX
and BoltzTraP: M. Miyata, T. Ozaki, T. Takeuchi, S. Nishino, M. Inukai and M. Koyano, Journal of Elec Materi 47(2018) 3254.
12. 2 次元材料の電子状態解析 - シリセン研究における実験と計算の協奏 -: 高村（ 山田）由起子 , 尾崎 泰助 , 応用物理学会誌 86 (2017) 488.
13. 計算科学のための HPC 技術２: 下司雅章 編／南一生 , 高橋 大介 , 尾崎 泰助 , 安藤 嘉倫 , 小林 正人 , 成瀬 彰 , 黒澤一
平 著 , ( 大阪大学出版会 , 大阪府吹田市山田丘 2-7 大阪大学ウエストフロント , 2017).

Noguchi group
We have studied the membrane shape transformations by proteins and chemical reactions. (1) Two types of banana-shaped
proteins assembled into striped bumps that surpress membrane tubulation. (2) The tubulation is promoted by laterally isotropic
membrane inclusions that generate the same sign of spontaneous curvature as the adsorbed protein rods while it is surpressedin the case of the opposite sign. (3) Asymmetric chemical reactions between the inner and outer leaflets of a vesicle induces
bilayer sheet protrusion and budding. The probabilities of these two types of transformations depend on the shear viscosity ofthe surrounding fluids compared to the membrane as well as the reaction rates.
1.

Acceleration and suppression of banana-shaped-protein-induced tubulation by addition of small membrane inclusions ofisotropic spontaneous curvatures: H. Noguchi, Soft Matter 13 (2017) 7771-7779.

2.

Membrane structure formation induced by two types of banana-shaped proteins: H. Noguchi and J.-B. Fournier, Soft
Matter 13 (2017) 4099-4011.

3.

分子シミュレーションにおける三体ポテンシャルを含んだ系の局所応力テンソルの非一意性 : 中川 恒 , 分子シミュレーション
研究会会誌 “アンサンブル ” 19 (2017) 69.

4.

短距離古典分子動力学シミュレーションコードの GPGPU 化（１）: 中川 恒 , 分子シミュレーション研究会会誌 “アンサンブ
ル ” 19 (2017) 267-273.

5.

Docosahexaenoic acid preserves visual function by maintaining correct disc morphology in retinal photoreceptor cells:
H. Shindou, H. Koso, J. Sasaki, H. Nakanishi, H. Sagara, K. M. Nakagawa, Y. Takahashi, D. Hishikawa, Y. IizukaHishikawa, F. Tokumasu, H. Noguchi, S. Watanabe, T. Sasaki and T. Shimizu, J. Biol. Chem. 292 (2017) 12054-12064.

6.

Bilayer sheet protrusions and budding from bilayer membranes induced by hydrolysis and condensation reactions:K. M. Nakagawa and H. Noguchi, Soft Matter 14 (2018) 1397-1407.

7.

短距離古典分子動力学シミュレーションコードの GPGPU 化（２）: 中川 恒 , 分子シミュレーション研究会会誌 “アンサンブ
ル ” 20 (2018) 40-45.

8.

†*Polymer effects on Kármán vortex: Molecular dynamics study: Y. Asano, H. Watanabe and H. Noguchi, The Journal ofChemical Physics 148 (2018) 144901.

Materials Synthesis and Characterization group
1.

*Weak

2.

†*Pressure-induced Freeze Concentration of Alanine Aqueous Solution as a Novel Field of Chemical Reaction:

ferromagnetic order breaking the threefold rotational symmetry of the underlying kagome lattice in
CdCu3(OH)6(NO3)2⋅H2O: R. Okuma, T. Yajima, D. Nishio-Hamane, T. Okubo and Z. Hiroi, Phys. Rev. B 95 (2017)094427(1-8).
S. Takahashi, H. Kagi, C. Fujimoto, A. Shinozaki, H. Gotou, T. Nishida and K. Mimura, Chem. Lett. 46 (2017) 334-337.

† Joint research with outside partners.

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177

3.

*Large anomalous Nernst effect at room temperature in a chiral antiferromagnet: M. Ikhlas, T. Tomita, T. Koretsune,

4.

†*Hydrogenation of iron in the early stage of Earth’s evolution: R. Iizuka-Oku, T. Yagi, H. Gotou, T. Okuchi, T. Hattori

5.

*Iyoite, MnCuCl(OH) and misakiite, Cu Mn(OH) Cl : new members of the atacamite family from Sadamisaki Penin3
3
6 2

M.-T. Suzuki, D. Nishio-Hamane, R. Arita, Y. Otani and S. Nakatsuji, Nature Phys. 13 (2017) 1085-1090.
and A. Sano-Furukawa, Nat. Commun. 8 (2017) 14096(1-7).

sula, Ehime Prefecture, Japan: D. Nishio–hamane, K. Momma, M. Ohnishi, N. Shimobayashi, R. Miyawaki, N. Tomita,
R. Okuma, A. R. Kampf and T. Minakawa, Mineral. Mag. 81 (2017) 485-498.
6.

†*High Pressure Experiments on Metal-Silicate Partitioning of Chlorine in a Magma Ocean: Implications for Terrestrial

Chlorine Depletion: H. Kuwahara, H. Gotou, T. Shinmei, N. Ogawa, A. Yamaguchi, N. Takahata, Y. Sano, T. Yagi and
S. Sugita, Geochem. Geophys. Geosyst. 18 (2017) 3929-3945.
7.

*High-pressure synthesis of tetragonal iron aluminide FeAl : K. Tobita, N. Sato, Y. Katsura, K. Kitahara, D. Nishio2
Hamane, H. Gotou and K. Kimura, Scr. Mater. 141 (2017) 107-110.

8.

*Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO under High Pressure: K. Oka,
39.

†*Improvement of coercivity in Nd-Fe-B nanocomposite magnets: T. Saito, S. Nozaki and D. Nishio-Hamane, J. Magn.

T. Yamauchi, S. Kanungo, T. Shimazu, K. Oh-ishi, Y. Uwatoko, M. Azuma and T. Saha-Dasgupta, J. Phys. Soc. Jpn. 87(2018) 024801(1-6).
Magn. Mater. 445 (2018) 49-52.

10. *Devil's staircase of odd-number charge order modulations in divalent β-vanadium bronzes under pressure: T. Yamauchi,
H. Ueda, K. Ohwada, H. Nakao and Y. Ueda, Phys. Rev. B 97 (2018) 125138.
11. †*High-coercivity SmCo5/α-Fe nanocomposite magnets: T. Saito and D. Nishio-Hamane, J. Alloys Compd. 735 (2018)
218-223.
12. †*Quantum valence criticality in a correlated metal: K. Kuga, Y. Matsumoto, M. Okawa, S. Suzuki, T. Tomita,
K. Sone, Y. Shimura, T. Sakakibara, D. Nishio-Hamane, Y. Karaki, Y. Takata, M. Matsunami, R. Eguchi, M. Taguchi,
A. Chainani, S. Shin, K. Tamasaku, Y. Nishino, M. Yabashi, T. Ishikawa and S. Nakatsuji, Sci. Adv. 4 (2018) eaao3547(1-6).
13. †*Size-controllable gold nanoparticles prepared from immobilized gold-containing ionic liquids on SBA-15: E. N.
Kusumawati, D. Nishio-Hamane and T. Sasaki, Catalysis Today (2017) S0920586117306193, accepted for publication.
14. *Transmission electron microscopy study of the epitaxial association of hedenbergite whiskers with babingtonite:
M. Nagashima and D. Nishio-Hamane, Mineral. Mag. (2018) 1, accepted for publication.

Neutron Science Laboratory
Shibayama group
Shibayama group has been exploring the structure and dynamics of soft matter, especially polymer gels, micelles, thermoresponsive polymers, and thermosets, utilizing a combination of small-angle neutron scattering (SANS), small-angle X-ray
scattering (SAXS), and dynamic light scattering (DLS). The objectives are to elucidate the relationship between the structure
and variety of novel properties/functions of polymer gels/resins. The highlights of 2017 include investigation of (1) structuralinvestigations of critical clusters and their biomedical applications, (2) probe diffusion of sol-gel transition in isorefractive
indexed solvents, (3) solvated structure of cellulose in a phosphonate-based ionic liquid, (4) structure-mechanical property
relationships in crosslinked phenolic resin, and (5) structural investigations of nonswellable thermoresponsive amphiphilic
conetwork, and so on.
1.

Experimental Observation of Two Features Unexpected from the Classical Theories of Rubber Elasticity: K. Nishi,
K. Fujii, U.-I. Chung, M. Shibayama and T. Sakai, Phys. Rev. Lett. 119 (2017) 267801(1-6).

2.

Structure-mechanical property relationships in crosslinked phenolic resin investigated by molecular dynamics simulation: Y. Shudo, A. Izumi, K. Hagita, T. Nakao and M. Shibayama, Polymer 116 (2017) 506-514.

3.

Decisive test of the ideal behavior of tetra-PEG gels: F. Horkay, K. Nishi and M. Shibayama, J. Chem. Phys. 146 (2017)164905(1-8).

* Joint research among groups within ISSP.

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4.

Structure and Rheology of Wormlike Micelles Formed by Fluorocarbon–Hydrocarbon-Type Hybrid Gemini Surfactant
in Aqueous Solution: K. Morishima, S. Sugawara, T. Yoshimura and M. Shibayama, Langmuir 33 (2017) 6084-6091.

5.

Mesoscopic Structural Aspects of Ca 2+-Triggered Polymer Chain Folding of a Tetraphenylethene-Appended
Poly(acrylic acid) in Relation to Its Aggregation-Induced Emission Behavior: K. Morishima, F. Ishiwari, S. Matsumura,
T. Fukushima and M. Shibayama, Macromolecules 50 (2017) 5940-5945.

6.

Microscopic Structure of Solvated Poly(benzyl methacrylate) in an Imidazolium-Based Ionic Liquid: High-Energy
X-ray Total Scattering and All-Atom MD Simulation Study: K. Fujii, T. Ueki, K. Hashimoto, Y. Kobayashi, Y. Kitazawa,
K. Hirosawa, M. Matsugami, K. Ohara, M. Watanabe and M. Shibayama, Macromolecules 50 (2017) 4780-4786.

7.

†Microscopic Structure of the “Nonswellable” Thermoresponsive Amphiphilic Conetwork: S. Nakagawa, X. Li,

8.

Permeation of Water through Hydrogels with Controlled Network Structure: T. Fujiyabu, X. Li, M. Shibayama, U.-I.
Chung and T. Sakai, Macromolecules 50 (2017) 9411-9416.

9.

Probe Diffusion during Sol–Gel Transition of a Radical Polymerization System Using Isorefractive Dynamic Light
Scattering: N. Watanabe, X. Li and M. Shibayama, Macromolecules 50 (2017) 9726-9733.

H. Kamata, T. Sakai, E. P. Gilbert and M. Shibayama, Macromolecules 50 (2017) 3388-3395.

10. Probe Diffusion of Sol–Gel Transition in an Isorefractive Polymer Solution: X. Li, N. Watanabe, T. Sakai and
M. Shibayama, Macromolecules 50 (2017) 2916-2922.
11. SANS Study on Critical Polymer Clusters of Tetra-Functional Polymers: X. Li, K. Hirosawa, T. Sakai, E. P. Gilbert andM. Shibayama, Macromolecules 50 (2017) 3655-3661.
12. Solvated Structure of Cellulose in a Phosphonate-Based Ionic Liquid: K. Hirosawa, K. Fujii, K. Hashimoto and
M. Shibayama, Macromolecules 50 (2017) 6509-6517.
13. Exploration of Ideal Polymer Networks: M. Shibayama, Macromol. Symp 372 (2017) 7-13.
14. Effect of protonation on the solvation structure of solute N-butylamine in an aprotic ionic liquid: K. Hashimoto,K. Fujii, K. Ohara and M. Shibayama, Phys. Chem. Chem. Phys. 19 (2017) 8194-8200.
15. Effect of substrate concentrations on the aggregation behavior and dynamic oscillatory properties of self-oscillating
block copolymers: R. Tamate, T. Ueki, M. Shibayama and R. Yoshida, Phys. Chem. Chem. Phys. 19 (2017) 2062720634.
16. 2D pair distribution function analysis of anisotropic small-angle scattering patterns from elongated nano-compositehydrogels: K. Nishi and M. Shibayama, Soft Matter 13 (2017) 3076-3083.
17. Autonomous unimer-vesicle oscillation by totally synthetic diblock copolymers: effect of block length and polymer
concentration on spatio-temporal structures: R. Tamate, T. Ueki, M. Shibayama and R. Yoshida, Soft Matter 13 (2017)4559-4568.
18. Amoeba-like self-oscillating polymeric fluids with autonomous sol-gel transition: M. Onoda, T. Ueki, R. Tamate,
M. Shibayama and R. Yoshida, Nat. Commun. 8 (2017) 15862(1-8).
19. Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy: T. Hiroi and
M. Shibayama, JoVE 119 (2017) 54885.
20. Fast-forming hydrogel with ultralow polymeric content as an artificial vitreous body: K. Hayashi, F. Okamoto, S. Hoshi,
T. Katashima, D. C. Zujur, X. Li, M. Shibayama, E. P. Gilbert, U.-I. Chung, S. Ohba, T. Oshika and T. Sakai, Nat.
Biomed. Eng. 1 (2017) 0044(1-7).
21. Structure of the Microemulsion of Polyglycerol Polyricinoleate Encapsulating Vitamin E: J. Matsuoka, T. Kusano,Y. Kasama, E. Tominaga, J. Kobayashi, W. Fujii, H. Iwase, M. Shibayama and H. Nanbu, J. Oleo Sci. 66 (2017)
1285-1291.
22. Gels: From Soft Matter to BioMatter: M. Shibayama, X. Li and T. Sakai, Ind. Eng. Chem. Res. 57 (2018) 1121-1128.
23. Soft Condensed Matter: M. Shibayama, in: Experimental Methods in the Physical Science Volume 49 Neutron Scattering
Applications in Chemistry, Materials Science and Biology, Ch Chapter 8, edited by Fernandez-Alonso, F. and Price,
D. L., (Academic Press, Cambridge MA, 2017), 459-546.

† Joint research with outside partners.

ISSP Activity Report 2017179

Yoshizawa groupA systematic study on a family of Ce-based non-centrosymmetric heavy fermion compounds CeTSi3 (T=transition metalions) was continued in 2017. It is found that a family of the CeTSi3 compounds can be classified into three different crystalline electric field (CEF) level scheme groups. In order to elucidate megnetic properties from a microscopic basis, the CEF
levels were reexamined for T= Rh and Ir compounds with use of inelastic neutron scattering (INS) measurements. The results
disclosed that the previously reported CEF level schemes for CeRhSi3 and CeIrSi3 were not correct, and our INS study established the correct CEF schemes which can consistently explain other magnetic properties.
1.

†Crystalline Electric Field Level Scheme of the Non‐ Centrosymmetric CePtSi : D. Ueta, T. Kobuke, M. Yoshida,32.

†Magnetic

3.

†Anisotropic pressure effects on superconductivity in Fe

H. Yoshizawa, Y. Ikeda, S. Itoh and T. Yokoo, Physica B 536 (2018) 21-23.

and Thermodynamic Studies on the Charge and Spin Ordering in the highly-doped La2-xSrxCoO4:
M. Yoshida, D. Ueta, Y. Ikeda, T. Yokoo, S. Itoh and H. Yoshizawa, Physica B 536 (2018) 338-341.
1+yTe1-xSx: K. Yamamoto, T. Yamazaki, T. Yamanaka, D. Ueta,
H. Yoshizawa and H. Yaguchi, J. Phys. Soc. Jpn. 87 (2018) 054705.

Yamamuro group
Our laboratory is studying chemical physics of complex condensed matters by using neutron scattering, X-ray diffraction,
calorimetric, dielectric, and viscoelastic techniques. Our target materials are glasses, liquids, and various disordered systems.
Following to the synchrotron X-ray diffraction works of last year on the vapor-deposited glasses of carbon disulfide (CS2),
propane (CH3CH2CH3) and propene (CH3CHCH2), their liquid states were measured as functions of temperature. We obtained
the atomic pair distribution functions of these liquids and found that the orientational correlation between neighboring
molecules steeply increases on cooling down to the glass transition temperature. This result clearly corresponds to the growthof the cooperatively rearranging region (CRR) determined by our previous calorimetric studies. Another topic is the quasielastic
neutron scattering of alkylated tetraphenylporphirins (3,5-C6C10-TPP and 2,5-C6C10-TPP) whose liquid states are stabilized by
the huge entropy due to the orientational disorder of alkylchains. Their molecular motions were reproduced well by the combination of the alkyl motions and the rotational and translational motions of whole molecules. Other than above topics, we haveconducted neutron diffraction experiments of the nanoparticles of PdRuX (X = Pt, Rh, Ir) alloys. The analysis is now going on
to investigate the atomic scale miscibility and local structure of the alloys.
1.

Calorimetric and Neutron Scattering Studies on Glass Transitions and Ionic Diffusions in Imidazolium-based Ionic
Liquids: O. Yamamuro and M. Kofu, Mat. Sci. Eng. 196 (2017) 012001(1-4).

2.

†Relaxation in a Prototype Ionic Liquid: Influence of Water on the Dynamics: D. L. Price, O. Borodin, M. A. González,M. Kofu, K. Shibata, T. Yamada, O. Yamamuro and M.-L. Saboungi, J. Phys. Chem. Lett. 8 (2017) 715-719.

3.

Neutron Scattering Studies on Short- and Long-range Layer Structures and Related Dynamics in Imidazoliumbased Ionic Liquids: F. Nemoto, M. Kofu, M. Nagao, K. Ohishi, S. Takata, J. Suzuki, T. Yamada, K. Shibata, T. Ueki,
Y. Kitazawa, M. Watanabe and O. Yamamuro, J. Chem. Phys. (2018), accepted for publication.

4.

Vibrational states of atomic hydrogen in bulk and nanocrystalline palladium studied by neutron spectroscopy: M. Kofu,
N. Hashimoto, H. Akiba, H. Kobayashi, H. Kitagawa, K. Iida, M. Nakamura and O. Yamamuro, Phys. Rev. B 96 (2017)054304(1-7).

5.

熱測定と中性子散乱の相補利用による新規物質研究 : 山室 修 , 熱測定 44(3) (2017) 117-123.

6.

ガラス転移温度 : 山室 修 ,「化学便覧基礎編改訂第 6 版」, 10.15, 日本化学会編 , ( 丸善出版 , 2017), accepted for publi-

cation.

Masuda group
The goal of our research is to discover a new quantum phenomenon and to reveal the mechanism of it. In this fiscal year westudied the following topics;Spin dynamics in the stripe-ordered buckled honeycomb lattice antiferromagnet Ba2NiTeO6,
Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3O4Cl2, Magnetic Structure and Dielectric State in the Multiferroic Ca2CoSi2O7, A layered wide-gap oxyhalide semiconductor with an infinite ZnO2 square planar
sheet: Sr2ZnO2Cl2, Magnetic metal-complex-conducting copolymer core-shell nanoassemblies for a single-drug anticancer
platform, and Spin pseudogap in the S=1/2 chain material Sr2CuO3 with impurities.
1.

Magnetic Structure and Dielectric State in the Multiferroic Ca2CoSi2O7: M. Soda, S. Hayashida, T. Yoshida, M. Akaki,
M. Hagiwara, M. Avdeev, O. Zaharko and T. Masuda, J. Phys. Soc. Jpn. 86 (2017) 064703(1-5).

* Joint research among groups within ISSP.

180

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2.

Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3O4Cl2: P. Babkevich, N. E.
Shaik, D. Lancon, A. Kikkawa, M. Enderle, R. A. Ewings, H. C. Walker, D. T. Adroja, P. Manuel, D. D. Khalyavin,
Y. Taguchi, Y. Tokura, M. Soda, T. Masuda and H. M. Ronnow, Phys. Rev. B 96 (2017) 014410(1-12).

3.

Spin dynamics in the stripe-ordered buckled honeycomb lattice antiferromagnet Ba2NiTeO6: S. Asai, M. Soda,
K. Kasatani, T. Ono, V. Ovidiu Garlea, B. Winn and T. Masuda, Phys. Rev. B 96 (2017) 104414(1-6).

4.

Spin pseudogap in the S=1/2 chain material Sr2CuO3 with impurities: G. Simutis, S. Gvasaliya, N. S. Beesetty,
T. Yoshida, J. Robert, S. Petit, A. I. Kolesnikov, M. B. Stone, F. Bourdarot, H. C. Walker, D. T. Adroja, O. Sobolev,
C. Hess, T. Masuda, A. Revcolevschi, B. Büchner and A. Zheludev, Phys. Rev. B 95 (2017) 054409(1-6).

5.

A layered wide-gap oxyhalide semiconductor with an infinite ZnO2 square planar sheet: Sr2ZnO2Cl2: Y. Su, Y. Tsujimoto, A. Miura, S. Asai, M. Avdeev, H. Ogino, M. Ako, A. A. Belik, T. Masuda, T. Uchikoshi and K. Yamaura, Chem.
Commun. 53 (2017) 3826(4 pages).

6.

Dielectric Property and Diffuse Scattering in Relaxor Magnet LuFeCoO4: M. Soda and T. Masuda, J. Phys.: Conf. Ser.
828 (2017) 012001(1-3).

7.

Neutron Scattering Study in Breathing Pyrochlore Antiferromagnet Ba3Yb2Zn5O11: T. Haku, M. Soda, M. Sera,
K. Kimura, J. Taylor, S. Itoh, T. Yokoo, Y. Matsumoto, D. Yu, R. A. Mole, T. Takeuchi, S. Nakatsuji, Y. Kono, T. Sakakibara, L. -J. Chang and T. Masuda, J. Phys.: Conf. Ser. 828 (2017) 012018(1-5).

8.

Powder neutron diffraction in one-dimensional frustrated chain compound NaCuMoO4(OD): S. Asai, T. Oyama,
M. Soda, K. Rule, K. Nawa, Z. Hiroi and T. Masuda, J. Phys.: Conf. Ser. 828 (2017) 012006(1-5).

9.

Hyperthermia and chemotherapy using Fe(Salen) nanoparticles might impact glioblastoma treatment: M. Ohtake,
M. Umemura, I. Sato, T. Akimoto, K. Oda, A. Nagasako, J.-H. Kim, T. Fujita, U. Yokoyama, T. Nakayama, Y. Hoshino,
M. Ishiba, S. Tokura, M. Hara, T. Muramoto, S. Yamada, T. Masuda, I. Aoki, Y. Takemura, H. Murata, H. Eguchi,
N. Kawahara and Y. Ishikawa, Sci. Rep. 7 (2017) 42783(1-12).

10. Magnetic metal-complex-conducting copolymer core–shell nanoassemblies for a single-drug anticancer platform: J.-H.
Kim, H. Eguchi, M. Umemura, I. Sato, S. Yamada, Y. Hoshino, T. Masuda, I. Aoki, K. Sakurai, M. Yamamoto and
Y. Ishikawa, NPG Asia Mater. 9 (2017) e367(1-14).
11. Low temperature magnetic properties of Nd2Ru2O7: S. T. Ku, D. Kumar, M. R. Lees, W.-T. Lee, R. Aldus, A. Studer,P. Imperia, S. Asai, T. Masuda, S. W. Chen, J. M. Chen and L. J. Chang, J. Phys.: Condens. Matter 30 (2018) 155601(1-11).
12. *Magnetic state selected by magnetic dipole interaction in the kagome antiferromagnet NaBa2Mn3F11: S. Hayashida,
H. Ishikawa, Y. Okamoto, T. Okubo, Z. Hiroi, M. Avdeev, P. Manuel, M. Hagihala, M. Soda and T. Masuda, Phys. Rev.
B 97 (2018) 054411(1-7).
13. *Pressure-induced quantum phase transition in the quantum antiferromagnet CsFeCl3: S. Hayashida, O. Zaharko,
N. Kurita, H. Tanaka, M. Hagihala, M. Soda, S. Itoh, Y. Uwatoko and T. Masuda, Phys. Rev. B 97 (2018) 140405(1-4).
14. Neutron Spin Resonance in the 112-Type Iron-Based Superconductor: T. Xie, D. Gong, H. Ghosh, A. Ghosh, M. Soda,
T. Masuda, S. Itoh, F. Bourdarot, L.-P. Regnault, S. Danilkin, S. Li and H. Luo, Phys. Rev. Lett. 120 (2018) 137001(1-7).
15. Crystal Structure of Magnetoelectric Ba2MnGe2O7 at Room and Low Temperatures by Neutron Diffraction: A. Sazonov,
V. Hutanu, M. Meven, G. Roth, R. Georgii, T. Masuda and B. Nafradi, Inorg. Chem. 57 (2018) 5089-5095.
16. Improvement for Neutron Brillouin Scattering Experiments on High Resolution Chopper Spectrometer HRC: S. Itoh,T. Yokoo, T. Masuda, H. Yoshizawa, M. Soda, M. Yoshida, T. Hawai, D. Kawana, R. Sugiura, T. Asami and Y. Ihata,
J. Phys.: Conf. Ser. 1021 (2018) 012028(1-4).
17. High resolution chopper spectrometer HRC and neutron Brillouin scattering: S. Itoh, T. Yokoo, T. Masuda,
H. Yoshizawa, M. Soda, S. Ibuka, Y. Ikeda, M. Yoshida, T. Hawai, D. Kawana, R. Sugiura, T. Asami, Y. Kawamura,T. Shinozaki and Y. Ihata, AIP Conf. Proc. 1969 (2018) 050002(1-5).

† Joint research with outside partners.

ISSP Activity Report 2017181

International MegaGauss Science Laboratory
Takeyama group
985 T close to 1000 T has been achieved by the electromagnetic flux compression megagauss generator. 1000 T-class electromagnetic flux compression megagauss generator is newly reconstructed and completed. A peak magnetic field of 400 T has
been achieved with 1.3 MJ energy injection, showing high efficiency of the system. Magnetization measurement techniques arestill in progress in the single-turn coil magagauss generator system, and the measurements using a co-axial type self-compensated pick-up-coil up to 130 T, and using magneto-optical techniques up to 200 T are currently achieved with high reliability,
at very low temperature around 5 K. Contactless ultra-high frequency AC-conductivity measurement techniques are developedand showed it is applicable to destructing short-pulse magnets of micro second pulse duration. The methods have been applied
to investigate spin structures of frustrated magnetic materials, multiferro materials, and quantum spin systems, superconducting
materials, and etc.
1.

†*Electric Polarization Induced by Spin Ordering under Magnetic Fields in Distorted Triangular Lattice Antiferromagnet

RbCoBr3: Y. Nishiwaki, M. Tokunaga, R. Sakakura, S. Takeyama, T. Kato and K. Iio, J. Phys. Soc. Jpn. 86 (2017)
044701(1-7).

2.

†*Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO: K. Nomura, Y. H.
Matsuda, Y. Narumi, K. Kindo, S. Takeyama, Y. Hosokoshi, T. Ono, N. Hasegawa, H. Suwa and S. Todo, J. Phys. Soc.
Jpn. 86 (2017) 104713(1-3).

3.

*Magnetic transitions under ultrahigh magnetic fields of up to 130 T in the breathing pyrochlore antiferromagnet

LiInCr4O8: Y. Okamoto, D. Nakamura, A. Miyake, S. Takeyama, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Phys.
Rev. B 95 (2017) 134438(1-5).
4.

†Ultrahigh

5.

Excitation energy dependence of initial phase shift in Kerr rotation of resident electron spin polarization in a CdTe
single quantum well: L. -P. Yan, T. Takamure, R. Kaji, G. Karczewski, S. Takeyama and S. Adachi, Phys. Status Solidi B
254 (2017) 1600449(1-6).

6.

Note: An approach to 1000 T using the electro-magnetic flux compression: D. Nakamura, H. Sawabe and S. Takeyama,Rev. Sci. Instrum. 89 (2018) 016106(1-3).

7.

Radio frequency self-resonant coil for contactless AC-conductivity in 100 T class ultra-strong pulse magnetic fields:
D. Nakamura, M. M. Altarawneh and S. Takeyama, Meas. Sci. Technolol. 29 (2018) 035901(7 pages).

magnetic field phases in the frustrated triangular-lattice magnet CuCrO2: A. Miyata, O. Portugall,
D. Nakamura, K. Ohgushi and S. Takeyama, Phys. Rev. B 96 (2017) 180401-4.

Kindo group
We have succeeded in developing highly repetitive long pulse magnet. The magnet is used for the electric transport measurements and the heat capacity measurements. We have shortened the waiting time for cooling down the magnet to 1.5 hrs aftergenerating the maximum field.
1.

†Hard x-ray photoemission study of Yb
1−xZrxB12: the effects of electron doping on the Kondo insulator YbB12:

A. Rousuli, H. Sato, F. Iga, K. Hayashi, K. Ishii, T. Wada, T. Nagasaki, K. Mimura, H. Anzai, K. Ichiki, S. Ueda, A.
Kondo, K. Kindo, T. Takabatake, K. Shimada, H. Namatame and M. Taniguchi, J. Phys.: Condens. Matter 29 (2017)
265601 (1-7).
2.

†40 T

3.

†Fe Substitution Effect on the High-Field Magnetization in the Kondo Semiconductor CeRu Al : A. Kondo, K. Kindo,
2 10Soft X-ray Spectroscopies on Magnetic-Field-Induced Valence Transition in Eu(Rh 1−xIrx)2Si2(x = 0.3):
H. Yasumura, Y. Narumi, T. Nakamura, Y. Kotani, A. Yasui, E. Kishaba, A. Mitsuda, H. Wada, K. Kindo and H. Nojiri,
J. Phys. Soc. Jpn. 86 (2017) 054706(1-8).
H. Nohara, M. Nakamura, H. Tanida, M. Sera and T. Nishioka, J. Phys. Soc. Jpn. 86 (2017) 023705(1-5).

4.

†*Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO: K. Nomura, Y. H.
Matsuda, Y. Narumi, K. Kindo, S. Takeyama, Y. Hosokoshi, T. Ono, N. Hasegawa, H. Suwa and S. Todo, J. Phys. Soc.
Jpn. 86 (2017) 104713(1-3).

5.

†*Magnetization Process of the Kondo Insulator YbB in Ultrahigh Magnetic Fields: T. T. Terashima, A. Ikeda, Y. H.
12

Matsuda, A. Kondo, K. Kindo and F. Iga, J. Phys. Soc. Jpn. 86 (2017) 054710(1-5).

* Joint research among groups within ISSP.

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6.

†Spin-1/2 Quantum Antiferromagnet on a Three-Dimensional Honeycomb Lattice Formed by a New Organic Biradical

F4BIPBNN: N. Amaya, T. Ono, Y. Oku, H. Yamaguchi, A. Matsuo, K. Kindo, H. Nojiri, F. Palacio, J. Campo andY. Hosokoshi, J. Phys. Soc. Jpn. 86 (2017) 074706(1-7).
7.

*Thermodynamic Investigation of Metamagnetic Transitions and Partial Disorder in the Quasi-Kagome Kondo Lattice

CePdAl: K. Mochidzuki, Y. Shimizu, A. Kondo, S. Nakamura, S. Kittaka, Y. Kono, T. Sakakibara, Y. Ikeda, Y. Isikawa
and K. Kindo, J. Phys. Soc. Jpn. 86 (2017) 034709(1-5).
8.

†*α−β and β−γ phase boundaries of solid oxygen observed by adiabatic magnetocaloric effect: T. Nomura, Y. Kohama,

9.

Experimental observation of temperature and magnetic-field evolution of the 4f states in CeFe2 revealed by soft
x-ray magnetic circular dichroism: Y. Saitoh, A. Yasui, H. Fuchimoto, Y. Nakatani, H. Fujiwara, S. Imada, Y. Narumi,
K. Kindo, M. Takahashi, T. Ebihara and A. Sekiyama, Phys. Rev. B 96 (2017) 035151(1-5).

Y. H. Matsuda, K. Kindo and T. C. Kobayashi, Phys. Rev. B 95 (2017) 104420(1-6).

10. High-field magnetization of Heusler compound Fe2Mn1−xVxSi: M. Hiroi, T. Tazoko, H. Sano, I. Shigeta, K. Koyama,
A. Kondo, K. Kindo, H. Manaka and N. Terada, Phys. Rev. B 95 (2017) 014410(1-5).
11. †Ising-like anisotropy stabilized 1/3 and 2/3 magnetization plateaus in the V3+ kagome lattice antiferromagnets
Cs2KV3F12, Cs2NaV3F12, and Rb2NaV3F12: M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara,
S. Kobayashi, N. Katayama, H. Sawa and K. Yoshimura, Phys. Rev. B 95 (2017) 134436(1-10).
12. *Magnetic transitions under ultrahigh magnetic fields of up to 130 T in the breathing pyrochlore antiferromagnet
LiInCr4O8: Y. Okamoto, D. Nakamura, A. Miyake, S. Takeyama, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Phys.
Rev. B 95 (2017) 134438(1-5).
13. †Magnetism of the antiferromagnetic spin-3/2 dimer compound CrVMoO7 having an antiferromagnetically orderedstate: M. Hase, Y. Ebukuro, H. Kuroe, M. Matsumoto, A. Matsuo, K. Kindo, J. R. Hester, T. J. Sato and H. Yamazaki,
Phys. Rev. B 95 (2017) 144429(1-7).
14. †Magnetism of the spin-1 tetramer compound A2Ni2Mo3O12 (A=Rb or K): M. Hase, A. Matsuo, K. Kindo and
M. Matsumoto, Phys. Rev. B 96 (2017) 214424(8).
15. †*Rich magnetoelectric phase diagrams of multiferroic single-crystal α−NaFeO2: N. Terada, Y. Ikedo, H. Sato, D. D.
Khalyavin, P. Manuel, A. Miyake, A. Matsuo, M. Tokunaga and K. Kindo, Phys. Rev. B 96 (2017) 035128(1-14).
16. †S=1/2 quantum critical spin ladders produced by orbital ordering in Ba2CuTeO6: A. S. Gibbs, A. Yamamoto, A. N.
Yaresko, K. S. Knight, H. Yasuoka, M. Majumder, M. Baenitz, P. J. Saines, J. R. Hester, D. Hashizume, A. Kondo,
K. Kindo and H. Takagi, Phys. Rev. B 95 (2017) 104428(1-6).
17. †Spin order in the Heisenberg kagome antiferromagnet MgFe3(OH)6Cl2: M. Fujihala, X. G. Zheng, S. Lee,
T. Kamiyama, A. Matsuo, K. Kindo and T. Kawae, Phys. Rev. B 96 (2017) 144111(9).
18. †*Magnetoelectric Behavior from S=1/2 Asymmetric Square Cupolas: Y. Kato, K. Kimura, A. Miyake, M. Tokunaga,
A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara, M. Sera, T. Kimura and Y. Motome, Phys. Rev. Lett. 118 (2017) 107601(1-5).
19. Search for Two-Photon Interaction with Axionlike Particles Using High-Repetition Pulsed Magnets and Synchrotron
X Rays: T. Inada, T. Yamazaki, T. Namba, S. Asai, T. Kobayashi, K. Tamasaku, Y. Tanaka, Y. Inubushi, K. Sawada,
M. Yabashi, T. Ishikawa, A. Matsuo, K. Kawaguchi, K. Kindo and H. Nojiri, Phys. Rev. Lett. 118 (2017) 071803 (1-6).
20. *Topochemical Crystal Transformation from a Distorted to a Nearly Perfect Kagome Cuprate: H. Ishikawa, T. Yajima,
A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Chem. Mater. 29 (2017) 6719-6725.
21. *Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate:
T. Kanetomo, T. Kihara, A. Miyake, A. Matsuo, M. Tokunaga, K. Kindo, H. Nojiri and T. Ishida, Inorg. Chem. 56(2017) 3310-3314.
22. Magnetic and electrical properties of Heusler compounds Ru2Cr1−xXxSi (X=V, Ti): M. Hiroi, H. Sano, T. Tazoko,
I. Shigeta, M. Ito, K. Koyama, H. Manaka, N. Terada, M. Fujii, A. Kondo and K. Kindo, J. Alloys Compd. 694 (2017)1376-1382.
23. †Physical properties in the cluster-based magnetic-diluted triangular lattice antiferromagnets Li 2Sc1-xSnxMo3O8:
Y. Haraguchi, C. Michioka, H. Ueda, A. Matsuo, K. Kindo and K. Yoshimura, J. Phys.: Conf. Ser. 828 (2017)012013(6).

† Joint research with outside partners.

ISSP Activity Report 2017183

24. †Different valence states of Tm in YB6 and YbB6: H. Sato, H. Nagata, F. Iga, Y. Osanai, A. Rousuli, K. Mimura,
H. Anzai, K. Ichiki, S. Ueda, T. Takabatake, A. Kondo, K. Kindo, K. Shimada, H. Namatame and M. Taniguchi, Journalof Electron Spectroscopy and Related Phenomena 220 (2017) 33-36.
25. The OVAL experiment: a new experiment to measure vacuum magnetic birefringence using high repetition pulsed
magnets: X. Fan, S. Kamioka, T. Inada, T. Yamazaki, T. Namba, S. Asai, J. Omachi, K. Yoshioka, M. KuwataGonokami, A. Matsuo, K. Kawaguchi, K. Kindo and H. Nojiri, Eur. Phys. J. D 71 (2017) 308(10).
26. †*Magnetic and Structural Properties of A-Site Ordered Chromium Spinel Sulfides: Alternating Antiferromagnetic
and Ferromagnetic Interactions in the Breathing Pyrochlore Lattice: Y. Okamoto, M. Mori, N. Katayama, A. Miyake,
M. Tokunaga, A. Matsuo, K. Kindo and K. Takenaka, J. Phys. Soc. Jpn. 87 (2018) 034709(1-8).
27. *Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni3V2O8: Y. J. Liu, J. F.
Wang, z. Z. He, C. L. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and M. Tokunaga, Phys.
Rev. B 97 (2018) 174429.
28. †Cluster-Based Haldane State in an Edge-Shared Tetrahedral Spin-Cluster Chain: Fedotovite K2Cu3O(SO4)3:
M. Fujihala, T. Sugimoto, T. Tohyama, S. Mitsuda, R. A. Mole, D. H. Yu, S. Yano, Y. Inagaki, H. Morodomi, T. Kawae,
H. Sagayama, R. Kumai, Y. Murakami, K. Tomiyasu, A. Matsuo and K. Kindo, Phys. Rev. Lett. 120 (2018) 077201(5).

Tokunaga group
BiFeO3 is perhaps the most extensively studied multiferroic material. Our highly accurate experiments of magnetostrsiction,
magnetization, electric polarization in pulsed high magnetic fields revealed ferroelastic distortion in this material that can becontrolled by magnetic field, and also emergence of novel magneto-electric phase at around room temperature. Theoretical
calculation suggests a kind of conical spin order in this phase, which has a spin modulation vector normal to that in thecycloidal state at zero field. Change in the spin modulation vector is confirmed through neutron experiments.
1.

†Characteristic Physical Properties of the Non-Kramers Γ

2.

†*Electric Polarization Induced by Spin Ordering under Magnetic Fields in Distorted Triangular Lattice Antiferromagnet

3.

†Different metamagnetism between paramagnetic Ce and Yb isomorphs: A. Miyake, Y. Sato, M. Tokunaga, J. Jatmika

4.

High-field magnetization and magnetic phase diagram of α-Cu2V2O7: G. Gitgeatpong, M. Suewattana, S. Zhang,
A. Miyake, M. Tokunaga, P. Chanlert, N. Kurita, H. Tanaka, T. J. Sato, Y. Zhao and K. Matan, Phys. Rev. B 95 (2017)245119(1-10).

5.

*Magnetic transitions under ultrahigh magnetic fields of up to 130 T in the breathing pyrochlore antiferromagnet

3 Ground State in PrPt2Cd20: Y. Hirose, T. Takeuchi, H. Doto,
F. Honda, A. Miyake, M. Tokunaga, D. Yoshizawa, T. Kida, M. Hagiwara, Y. Haga and R. Settai, J. Phys. Soc. Jpn. 86(2017) 074711(1-7).

RbCoBr3: Y. Nishiwaki, M. Tokunaga, R. Sakakura, S. Takeyama, T. Kato and K. Iio, J. Phys. Soc. Jpn. 86 (2017)
044701(1-7).
and T. Ebihara, Phys. Rev. B 96 (2017) 085127(1-7).

LiInCr4O8: Y. Okamoto, D. Nakamura, A. Miyake, S. Takeyama, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Phys.
Rev. B 95 (2017) 134438(1-5).
6.

*Phase diagram of multiferroic KCu As O (OD) : G. J. Nilsen, V. Simonet, C. V. Colin, R. Okuma, Y. Okamoto,
3 2 7
3
M. Tokunaga, T. C. Hansen, D. D. Khalyavin and Z. Hiroi, Phys. Rev. B 95 (2017) 214415(1-10).

7.

†*Rich magnetoelectric phase diagrams of multiferroic single-crystal α−NaFeO : N. Terada, Y. Ikedo, H. Sato, D. D.
2

8.

†*Two-carrier

9.

†*Magnetoelectric Behavior from S=1/2 Asymmetric Square Cupolas: Y. Kato, K. Kimura, A. Miyake, M. Tokunaga,

Khalyavin, P. Manuel, A. Miyake, A. Matsuo, M. Tokunaga and K. Kindo, Phys. Rev. B 96 (2017) 035128(1-14).

analyses of the transport properties of black phosphorus under pressure: K. Akiba, A. Miyake,
Y. Akahama, K. Matsubayashi, Y. Uwatoko and M. Tokunaga, Phys. Rev. B 95 (2017) 115126(1-7).
A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara, M. Sera, T. Kimura and Y. Motome, Phys. Rev. Lett. 118 (2017) 107601(1-5).

10. *Topochemical Crystal Transformation from a Distorted to a Nearly Perfect Kagome Cuprate: H. Ishikawa, T. Yajima,
A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo and Z. Hiroi, Chem. Mater. 29 (2017) 6719-6725.
11. *Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate:
T. Kanetomo, T. Kihara, A. Miyake, A. Matsuo, M. Tokunaga, K. Kindo, H. Nojiri and T. Ishida, Inorg. Chem. 56(2017) 3310-3314.
* Joint research among groups within ISSP.

184

ISSP Activity Report 201712. †Quantum Hall states observed in thin films of Dirac semimetal Cd3As2: M. Uchida, Y. Nakazawa, S. Nishihaya,
K. Akiba, M. Kriener, Y. Kozuka, A. Miyake, Y. Taguchi, M. Tokunaga, N. Nagaosa, Y. Tokura and M. Kawasaki, Nat.
Commun. 8 (2017) 2274(1-7).
13. Successive field-induced transitions in BiFeO3 around room temperature: S. Kawachi, A. Miyake, T. Ito, S. E.
Dissanayake, M. Matsuda, W. Ratcliff, Z. Xu, Y. Zhao, S. Miyahara, N. Furukawa and M. Tokunaga, Phys. Rev.
Materials 1 (2017) 024408(1-6).
14. †Stress- and Magnetic Field-Induced Martensitic Transformation at Cryogenic Temperatures in Fe–Mn–Al–Ni ShapeMemory Alloys: J. Xia, X. Xu, A. Miyake, Y. Kimura, T. Omori, M. Tokunaga and R. Kainuma, Shap. Mem. Superelasticity 3 (2017) 467-475.
15. †*Magnetic and Structural Properties of A-Site Ordered Chromium Spinel Sulfides: Alternating Antiferromagnetic
and Ferromagnetic Interactions in the Breathing Pyrochlore Lattice: Y. Okamoto, M. Mori, N. Katayama, A. Miyake,
M. Tokunaga, A. Matsuo, K. Kindo and K. Takenaka, J. Phys. Soc. Jpn. 87 (2018) 034709(1-8).
16. 室温マルチフェロイック物質ビスマスフェライトの電気磁気効果 : 河智 史朗 , 三宅 厚志 , 徳永 将史 , 伊藤 利充 , 固体物理
53 (2018) 61-70.
17. †Large magneto-thermopower in MnGe with topological spin texture: Y. Fujishiro, N. Kanazawa, T. Shimojima,
A. Nakamura, K. Ishizaka, T. Koretsune, R. Arita, A. Miyake, H. Mitamura, K. Akiba, M. Tokunaga, J. Shiogai,
S. Kimura, S. Awaji, A. Tsukazaki, A. Kikkawa, Y. Taguchi and Y. Tokura, Nat. Commun. 9 (2018) 408(1-7).

Y. Matsuda group
The phase diagram in B-T plain of solid oxygen has been constructed by several experiments including the optical transmission,
magnetization, adiabatic heating effect, and magneto-caloric effect. The obtained phase diagram indicates that the field induced
novel phase (θ phase) emerges from the α and β phases at low temperatures. The full magnetization curve of the organic S=1/2
spin ladder compound BIP-BNO is obtained using the single-turn coil megagauss field generator. A characteristic symmetrictwo-peak structure in dM/dB curve is a first experimental evidence that BIP-TENO is a prototypical organic (not containing
magnetic ions) spin-ladder compound. High magnetic field property of the Kondo insulator YbB12 is also investigated by meansof the magnetization. The second jump of the magnetization found around 102 T can correspond to the collapse of the Kondo
bound state. It has been shown that the field-induced insulator-metal transition in YbB12 is interpreted as the energy gap closing
by Zeeman effect without breaking the Kondo state. In addition to experiments on various materials, we have developed atechnique for magnetostriction under ultrahigh magnetic fields in the range of 100 -1000 T.
1.

†*Lifetime-Broadening-Suppressed X-ray Absorption Spectrum of β-YbAlB Deduced from Yb 3d → 2p Resonant X-ray
4

Emission Spectroscopy: N. Kawamura, N. Kanai, H. Hayashi, Y. H. Matsuda, M. Mizumaki, K. Kuga, S. Nakatsuji and
S. Watanabe, J. Phys. Soc. Jpn. 86 (2017) 014711(1-7).
2.

†*Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO: K. Nomura, Y. H.

Matsuda, Y. Narumi, K. Kindo, S. Takeyama, Y. Hosokoshi, T. Ono, N. Hasegawa, H. Suwa and S. Todo, J. Phys. Soc.
Jpn. 86 (2017) 104713(1-3).
3.

†*Magnetization Process of the Kondo Insulator YbB in Ultrahigh Magnetic Fields: T. T. Terashima, A. Ikeda, Y. H.
124.

†*α−β and β−γ phase boundaries of solid oxygen observed by adiabatic magnetocaloric effect: T. Nomura, Y. Kohama,

5.

†H-T phase diagram of solid oxygen: T. Nomura, Y. H. Matsuda and T. C. Kobayashi, Phys. Rev. B 96 (2017) 054439

Matsuda, A. Kondo, K. Kindo and F. Iga, J. Phys. Soc. Jpn. 86 (2017) 054710(1-5).

Y. H. Matsuda, K. Kindo and T. C. Kobayashi, Phys. Rev. B 95 (2017) 104420(1-6).
(1-5).

6.

†*High-speed 100 MHz strain monitor using fiber Bragg grating and optical filter for magnetostriction measurements

under ultrahigh magnetic fields: A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi, H. Watanabe and K. Sato,
Rev. Sci. Instrum. 88 (2017) 083906(1-5).
7.

*Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni3V2O8: Y. J. Liu, J. F.

Wang, z. Z. He, C. L. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and M. Tokunaga, Phys.
Rev. B 97 (2018) 174429.

Kohama group
In 2017, our group upgrades the pulsed-field calorimeter for low temperature measurements of specific heat. With the new
system, not only the accessibility to the low temperature, the sensitivity & accuracy of the C(T) data becomes compatible with
† Joint research with outside partners.

ISSP Activity Report 2017185

the C(T) data taken in steady fields. We also successfully developed new technique for measuring electric resistivity, which canoperate in destructive pulsed field up to 120 T.
1.

*Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni3V2O8: Y. J. Liu, J. F.

Wang, z. Z. He, C. L. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and M. Tokunaga, Phys.
Rev. B 97 (2018) 174429.
2.

Quntum Criticality of an Ising-like Spin-1/2 Antiferromagnetic Chain in a Transverse Magnetic Field: Z. Wang,
T. Lorenz, D. I. Gorbunov, P. T. Cong, Y. Kohama, S. Niesen, O. Breuning, J. Engelmayer, A. Herman, J. Wu, K. Kindo,
J. Wosnitza, S. Zherlitsyn and A. Loidl, Phys Rev Lett 120 (2018) 207205.

Center of Computational Materials Science
Akai group(1) L-edge resonant magneto-optical Kerr effect of Fe and Fe/Cu interfaces were calculated in the framework of KKR Green's
function method and density functional theory. The results were compared with the recent experimentas performed by Matsuda'sgroup of ISSP. (2) The method of first-principles calculation of the soft X-ray second harmonic generation (SHG) was developed. The SHG of GaFeO3 was calculated by the method and the results were compared with the recent experiment performedby Matsuda's group of ISSP. (3) Maximum performance that might be expected for permanent magnet materials was estimatedbased on the density functional theory. The calculations concluded that the plausible upper limits of saturation magnetic
polariza- tion, magnetic transition temperature, and the magnetocrystalline anisotropy constant of permanent magnet materials
could be ∼2.7 T, ∼2000 K, and ∼1000 MJm−3, respectively. (4) We developed the method of calculating Seebeck coefficientin the framework of the Korringa–Kohn–Rostoker (KKR) method combined with the coherent potential approximation (CPA;KKR-CPA) and linear response theory. The main objective was to establish a practical first-principles scheme that can calculate the conductivities and Seebeck coefficients of metallic systems at finite temperature. Thus, it was necessary to include theeffects of electron-phonon scattering, which plays a crucial role at finite temperature, particularly for ordered-structure systems
where the conductivity diverges at T = 0 K. The approach combines three components: linear response theory in the frameworkof the KKR method; phonon calculations; and an alloy analogy applied to the local static phonons using the KKR-CPA. The
calculated Cu resistivity and Seebeck coefficients for various transition- metal elements at finite temperature showed reasonably
good overall agreement with experiment.
1.

Atomistic-model study of temperature-dependent domain walls in the neodymium permanent magnet Nd 2Fe14B:
M. Nishino, Y. Toga, S. Miyashita, H. Akai, A. Sakuma and S. Hirosawa, Phys. Rev. B 95 (2017) 094429(1-7).

2.

*Determination of the element-specific complex permittivity using a soft x-ray phase modulator: Y. Kubota, Y. Hirata,

J. Miyawaki, S. Yamamoto, H. Akai, R. Hobara, Sh. Yamamoto, K. Yamamoto, T. Someya, K. Takubo, Y. Yokoyama,
M. Araki, M. Taguchi, Y. Harada, H. Wadati, M. Tsunoda, R. Kinjo, A. Kagamihata, T. Seike, M. Takeuchi, T. Tanaka,
S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 214417(1-6).
3.

*L-edge resonant magneto-optical Kerr effect of a buried Fe nanofilm: Y. Kubota, M. Taguchi, H. Akai, Sh. Yamamoto,

T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama, S. Yamamoto, M. Tsunoda,
H. Wadati, S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 134432(1-6).
4.

First-principles study of intersite magnetic couplings and Curie temperature in RFe12-xCrx (R = Y, Nd, Sm):T. Fukazawa, H. Akai, Y. Harashima and T. Miyake, J. Phys. Soc. Jpn. 87 (2018) 044706(1-5).

5.

Quantum Theory of Rare-Earth Magnets: T. Miyake and H. Akai, J. Phys. Soc. Jpn. 87 (2018) 041009(1-10).

6.

First-principles calculation of transition-metal Seebeck coefficients: S. Kou and H. Akai, Solid State Commun. 296(2018) 1-5.

7.

Maximum performance of permanent magnet materials: H. Akai, Scr. Mater. (2018), in print.

Laser and Synchrotron Research Center
Shin group
We studied high Tc Fe-pnictide superconductors using 7-eV laser. High resolution photoemission study with polarization depen-* Joint research among groups within ISSP.

186

ISSP Activity Report 2017

dence is very powerful for the study of the superconducting mechanism. Orbital fluctuation mechanism is also important inaddition to the spin fluctuation mechanism.
1.

*Determination of the element-specific complex permittivity using a soft x-ray phase modulator: Y. Kubota, Y. Hirata,

J. Miyawaki, S. Yamamoto, H. Akai, R. Hobara, Sh. Yamamoto, K. Yamamoto, T. Someya, K. Takubo, Y. Yokoyama,
M. Araki, M. Taguchi, Y. Harada, H. Wadati, M. Tsunoda, R. Kinjo, A. Kagamihata, T. Seike, M. Takeuchi, T. Tanaka,
S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 214417(1-6).
2.

*Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spin-

split surface states: R. Noguchi, K. Kuroda, K. Yaji, K. Kobayashi, M. Sakano, A. Harasawa, T. Kondo, F. Komori and
S. Shin, Phys. Rev. B 95 (2017) 041111(R)(1-6).
3.

*Suppression of supercollision carrier cooling in high mobility graphene on SiC(0001): T. Someya, H. Fukidome,

H. Watanabe, T. Yamamoto, M. Okada, H. Suzuki, Y. Ogawa, T. Iimori, N. Ishii, T. Kanai, K. Tashima, B. Feng,
S. Yamamoto, J. Itatani, F. Komori, K. Okazaki, S. Shin and I. Matsuda, Phys. Rev. B 95 (2017) 165303(1-7).
4.

†*Ultrafast Melting of Spin DensityWave Order in BaFe2As2 Observed by Time- and Angle-Resolved Photoemission

Spectroscopy with Extreme-Ultraviolet Higher Harmonic Generation: H. Suzuki, K. Okazaki, T. Yamamoto, T. Someya,
M. Okada, K. Koshiishi, M. Fujisawa, T. Kanai, N. Ishii, M. Nakajima, H. Eisaki, K. Ono, H. Kumigashira, J. Itatani,
A. Fujimori and S. Shin, Phys. Rev. B 95 (2017) 165112(1-6).
5.

†*Unusual nodal behaviors of the superconducting gap in the iron-based superconductor Ba(Fe6.

†*Visualizing the evolution of surface localization in the topological state of Bi2Se3 by circular dichroism in laser-based

0.65Ru0.35)2As2: Effectsof spin-orbit coupling: L. Liu, K. Okazaki, T. Yoshida, H. Suzuki, M. Horio, L. C. C. Ambolode II, J. Xu, S. Ideta,
M. Hashimoto, D. H. Lu, Z. -X. Shen, Y. Ota, S. Shin, M. Nakajima, S. Ishida, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki,
T. Mikami, T. Kakeshita, Y. Yamakawa, H. Kontani, S. Uchida and A. Fujimori, Phys. Rev. B 95 (2017) 104504(1-5).

angle-resolved photoemission spectroscopy: T. Kondo, Y. Nakashima, Y. Ishida, A. Kikkawa, Y. Taguchi, Y. Tokura andS. Shin, Phys. Rev. B 96 (2017) 241413(1-5).
7.

†*Observation of Bogoliubov Band Hybridization in the Optimally Doped Trilayer Bi2Sr2Ca2Cu3O10+δ: S. Kunisada,S. Adachi, S. Sakai, N. Sasaki, M. Nakayama, S. Akebi, K. Kuroda, T. Sasagawa, T. Watanabe, S. Shin and T. Kondo,
Phys. Rev. Lett. 119 (2017) 217001(1-5).
8.

Topologically Entangled Rashba-Split Shockley States on the Surface of Grey Arsenic: P. Zhang, J. -Z. Ma, Y. Ishida,
L. -X. Zhao, Q. -N. Xu, B. -Q. Lv, K. Yaji, G. -F. Chen, H. -M. Weng, X. Dai, Z. Fang, X. -Q. Chen, L. Fu, T. Qian,
H. Ding and S. Shin, Phys. Rev. Lett. 118 (2017) 046802(1-5).

9.

*Unconventional superconductivity in the BiS -based layered superconductor NdO
2
0.71F0.29BiS2: Y. Ota, K. Okazaki,

H. Q. Yamamoto, T. Yamamoto, S. Watanabe, C. Chen, M. Nagao, S. Watauchi, I. Tanaka, Y. Takano and S. Shin, Phys.
Rev. Lett. 118 (2017) 167002(1-6).

10. *Capturing ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism: K. Takubo,
K. Yamamoto, Y. Hirata, Y. Yokoyama, Y. Kubota, S. Yamamoto, S. Yamamoto, I. Matsuda, S. Shin, T. Seki,
K. Takanashi and H. Wadati, Appl. Phys. Lett. 110 (2017) 162401(1-5).
11. †*Effect of physisorption of inert organic molecules on Au (111) surface electronic states: H. Mizushima, H. Koike,
K. Kuroda, Y. Ishida, M. Nakayama, K. Mase, T. Kondo, S. Shin and K. Kanai, Phys. Chem. Chem. Phys. 19 (2017)
18646 (1-6).
12. *Signatures of a time-reversal symmetric Weyl semimetal with only four Weyl points: I. Belopolski, P. Yu, D. S.
Sanchez, Y. Ishida, T.-R. Chang, S. S. Zhang, S.-Y. Xu, H. Zheng, G. Chang, G. Bian, H.-T. Jeng, T. Kondo, H. Lin,
Z. Liu, S. Shin and M. Zahid Hasan, Nat. Commun. 8 (2017) 942(1-7).
13. *Spin-dependent quantum interference in photoemission process from spin-orbit coupled states: K. Yaji, K. Kuroda,
S. Toyohisa, A. Harasawa, Y. Ishida, S. Watanabe, C. Chen, K. Kobayashi, F. Komori and S. Shin, Nat. Commun. 8(2017) 14588(1-6).
14. *Femtosecond to picosecond transient effects in WSe2 observed by pump-probe angle-resolved photoemission spectroscopy: R.-Y. Liu, Y. Ogawa, P. Chen, K. Ozawa, T. Suzuki, M. Okada, T. Someya, Y. Ishida, K. Okazaki, S. Shin, T.-C.
Chiang and I. Matsuda, Sci. Rep. 7 (2017) 15981(1-7).
15. *Evidence for magnetic Weyl fermions in a correlated metal: K. Kuroda, T. Tomita, M. -T. Suzuki, C. Bareille,
A. A. Nugroho, P. Goswami, M. Ochi, M. Ikhlas, M. Nakayama, S. Akebi, R. Noguchi, R. Ishii, N. Inami, K. Ono,
H. Kumigashira, A. Varykhalov, T. Muro, T. Koretsune, R. Arita, S. Shin, T. Kondo and S. Nakatsuji, Nature Mater. 16(2017) 1090-1095.

† Joint research with outside partners.

ISSP Activity Report 2017187

16. *Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb: J. Ma,
C. Yi, B. Lv, Z. Wang, S. Nie, L. Wang, L. Kong, Y. Huang, P. Richard, P. Zhang, K. Yaji, K. Kuroda, S. Shin, H. Weng,
B. Andrei Bernevig, Y. Shi, T. Qian and H. Ding, Sci. Adv. 3 (2017) 1602415(1-5).
17. †*Polarization dependence of resonant magneto-optical Kerr effect measured by two types of figure-8 undulators:
Y. Kubota, Sh. Yamamoto, T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama,
M. Taguchi, S. Yamamoto, M. Tsunoda, H. Wadati, S. Shin and I. Matsuda, J. Electron. Spectrosc. Relat. Phenom. 220(2017) 17-20.
18. †*Spin-polarized quasi-one-dimensional state with finite band gap on the Bi/InSb(001) surface: J. Kishi, Y. Ohtsubo,
T. Nakamura, K. Yaji, A. Harasawa, F. Komori, S. Shin, J. E. Rault, P. Le Fèvre, F. Bertran, A. Taleb-Ibrahimi,
M. Nurmamat, H. Yamane, S. Ideta, K. Tanaka and S. Kimura, Phys. Rev. Materials 1 (2017) 064602(1-5).
19. *Surface electronic states of Au-induced nanowires on Ge(0 0 1): K. Yaji, R. Yukawa, S. Kim, Y. Ohtsubo, P. L. Fèvre,F. Bertran, A. Taleb-Ibrahimi, I. Matsuda, K. Nakatsuji, S. Shin and F. Komori, J. Phys.: Condens. Matter 30 (2018)075001(1-7).
20. †*Antiphase Fermi-surface modulations accompanying displacement excitation in a parent compound of iron-based
superconductors: K. Okazaki, H. Suzuki, T. Suzuki, T. Yamamoto, T. Someya, Y. Ogawa, M. Okada, M. Fujisawa,T. Kanai, N. Ishi, J. Itatani, M. Nakajima, H. Eisaki, A. Fujimori and S. Shin, Phys. Rev. B 97 (2018) 121107(R)(1-6).
21. *Kondo hybridization and quantum criticality in β−YbAlB4 by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama,
K. Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).
22. Ultrafast dynamics of an unoccupied surface resonance state in Bi2Te2Se: N. Munisa, E. E. Krasovskii, Y. Ishida,
K. Sumida, J. Chen, T. Yoshikawa, E. V. Chulkov, K. A. Kokh, O. E. Tereshchenko, S. Shin and A. Kimura, Phys. Rev. B
97 (2018) 115303(1-6).
23. †*Electronic Structure of Ce-Doped and -Undoped Nd2CuO4 Superconducting Thin Films Studied by Hard X-Ray
Photoemission and Soft X-Ray Absorption Spectroscopy: M. Horio, Y. Krockenberger, K. Yamamoto, Y. Yokoyama,
K. Takubo, Y. Hirata, S. Sakamoto, K. Koshiishi, A. Yasui, E. Ikenaga, S. Shin, H. Yamamoto, H. Wadati andA. Fujimori, Phys. Rev. Lett. 120 (2018) 257001(1-6).
24. *Element Selectivity in Second-Harmonic Generation of GaFeO 3 by a Soft-X-Ray Free-Electron Laser: Sh.
Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi, Y. Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K. Horiba, H.
Yumoto, T. Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa, S. Yamamoto, M. Kotsugi, H. Wadati,
H. Kumigashira, T. Arima, S. Shin and I. Matsuda, Phys. Rev. Lett. 120 (2018) 223902(1-5).
25. †*Experimental Determination of the Topological Phase Diagram in Cerium Monopnictides: K. Kuroda, M. Ochi,
H. S. Suzuki, M. Hirayama, M. Nakayama, R. Noguchi, C. Bareille, S. Akebi, S. Kunisada, T. Muro, M. D. Watson,
H. Kitazawa, Y. Haga, T. K. Kim, M. Hoesch, S. Shin, R. Arita and T. Kondo, Phys. Rev. Lett. 120 (2018) 086402(1-6).
26. *Observation of topological superconductivity on the surface of an iron-based superconductor: P. Zhang, K. Yaji,
T. Hashimoto, Y. Ota, T. Kondo, K. Okazaki, Z. Wang, J. Wen, G. D. Gu, H. Ding and S. Shin, Science 360 (2018)
182-186.
27. * レーザー励起スピン分解光電子分光で解き明かす光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 光学 47(2018) 142-147.
28. *Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,D. Oumbarek, M. Fujisawa, T. Someya, Y. Takahashi, T. Yamamoto, N. Ishiia, K. Yajia, S. Yamamoto, T. Kanai,
K. Okazaki, M. Kotsugi, J. Itatani, S. Shin and I. Matsuda, J. Electron Spectrosc. Relat. Phenom. 222 (2018) 68-73.
29. *Superconducting gap anisotropy sensitive to nematic domains in FeSe: T. Hashimoto, Y. Ota, H. Q. Yamamoto,Y. Suzuki, T. Shimojima, S. Watanabe, C. Chen, S. Kasahara, Y. Matsuda, T. Shibauchi, K. Okazaki and S. Shin, Nat.
Commun. 9 (2018) 282(1-7).
30. †*Superconducting Pairing of Topological Surface States in Bismuth Selenide Films on Niobium: D. Flötotto, Y. Ota,
Y. Bai, C. Zhang, K. Okazaki, A. Tsuzuki, T. Hashimoto, J. N. Eckstein, S. Shin and T. -C. Chiang, Sci. Adv. 4 (2018)
eaar7214(1-5).
31. * レーザーで電子のスピン方向を自由に制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , レーザー加工学会誌 25 (2018)39-42.
32. †*Experimental Methods for Spin and Angle-Resolved Photoemission Spectroscpy Combined with Polarization Variable
Laser: K. Kuroda, K. Yaji, A. Harasawa, R. Noguchi, T. Kondo, F. Komori and S. Shin, JoVE (2018), in print.
* Joint research among groups within ISSP.

188

ISSP Activity Report 201733. * 固体表面電子におけるスピン軌道エンタングルメントと光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 個体
物理 52 (2017) 559-571.

I. Matsuda group
In 2017, we made large progress in developments of synchrotron radiation techniques at our beamline, SPring-8 BL07LSU.
We succeeded in directly determining the complex permittivity tensor using a method combining a developed light source froma segmented cross undulator of synchrotron radiation and the magneto-optical Kerr effect. The empirical permittivity, which
carries the electronic and magnetic information of a material, has element specificity and has perfect confirmation using thequantum-mechanical calculation for itinerant electrons systems. These results help in understanding the interaction of lightand matter, and they provide an interesting approach to seek the best materials as optical elements, for example, in extendedultraviolet lithographic technologies or in state-of-the-art laser technologies. Concerning the material science, we experimentally realized two-dimensional Dirac nodal line fermions in monolayer Cu2Si. We also succeeded in capturing ultrafast carrier
dynamics in massless and massive Dirac materials with high-harmonic generation lasers.
1.

*Determination of the element-specific complex permittivity using a soft x-ray phase modulator: Y. Kubota, Y. Hirata,

J. Miyawaki, S. Yamamoto, H. Akai, R. Hobara, Sh. Yamamoto, K. Yamamoto, T. Someya, K. Takubo, Y. Yokoyama,
M. Araki, M. Taguchi, Y. Harada, H. Wadati, M. Tsunoda, R. Kinjo, A. Kagamihata, T. Seike, M. Takeuchi, T. Tanaka,
S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 214417(1-6).
2.

*L-edge resonant magneto-optical Kerr effect of a buried Fe nanofilm: Y. Kubota, M. Taguchi, H. Akai, Sh. Yamamoto,

T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama, S. Yamamoto, M. Tsunoda,
H. Wadati, S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 134432(1-6).
3.

*Suppression of supercollision carrier cooling in high mobility graphene on SiC(0001): T. Someya, H. Fukidome,

H. Watanabe, T. Yamamoto, M. Okada, H. Suzuki, Y. Ogawa, T. Iimori, N. Ishii, T. Kanai, K. Tashima, B. Feng,
S. Yamamoto, J. Itatani, F. Komori, K. Okazaki, S. Shin and I. Matsuda, Phys. Rev. B 95 (2017) 165303(1-7).
4.

†*Dirac Fermions in Borophene: B. Feng, O. Sugino, R.-Y. Liu, J. Zhang, R. Yukawa, M. Kawamura, T. Iimori, H. Kim,

Y. Hasegawa, H. Li, L. Chen, K. Wu, H. Kumigashira, F. Komori, T.-C. Chiang, S. Meng and I. Matsuda, Phys. Rev.
Lett. 118 (2017) 096401(1-6).
5.

* ホウ素単原子シート「ボロフェン」：金属性とディラックフェルミオン : F. Baojie, 松田 巌 , 固体物理 52 (2017) 385-393.

6.

*Capturing

7.

Time-resolved soft X-ray core-level photoemission spectroscopy to 880°C using pulsed laser and synchrotron radiation,and switched heating current: T. Abukawa, S. Yamamoto, R. Yukawa, S. Kanzaki, K. Mukojima and I. Matsuda, Surf.
Sci. 656 (2017) 43-47.

8.

* ホウ素単原子シート「ボロフェン」: 松田 巌 , パリティ 32 (2017) 50-53.

9.

*Adsorption

ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism: K. Takubo,
K. Yamamoto, Y. Hirata, Y. Yokoyama, Y. Kubota, S. Yamamoto, S. Yamamoto, I. Matsuda, S. Shin, T. Seki,
K. Takanashi and H. Wadati, Appl. Phys. Lett. 110 (2017) 162401(1-5).

of CO2 on Graphene: A Combined TPD, XPS, and vdW-DF Study: K. Takeuchi, S. Yamamoto,Y. Hamamoto, Y. Shiozawa, K. Tashima, H. Fukidome, T. Koitaya, K. Mukai, S. Yoshimoto, M. Suemitsu, Y. Morikawa,J. Yoshinobu and I. Matsuda, J. Phys. Chem. C 121 (2017) 2807-2814.

10. Visualizing Type-II Weyl Points in Tungsten Ditelluride by Quasiparticle Interference: C.-L. Lin, R. Arafune, R.-Y. Liu,
M. Yoshimura, B. Feng, K. Kawahara, Z. Ni, E. Minamitani, S. Watanabe, Y. Shi, M. Kawai, T.-C. Chiang, I. Matsuda
and N. Takagi, ACS Nano 11 (2017) 11459−11465.
11. †*Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu 2Si: B. Feng, B. Fu,
S. Kasamatsu, S. Ito, P. Cheng, C.-C. Liu, Y. Feng, S. Wu, S. K. Mahatha, P. Sheverdyaeva, P. Moras, M. Arita,
O. Sugino, T.-C. Chiang, K. Shimada, K. Miyamoto, T. Okuda, K. Wu, L. Chen, Y. Yao and I. Matsuda, Nat. Commun. 8(2017) 1007(1-6).
12. *Femtosecond to picosecond transient effects in WSe2 observed by pump-probe angle-resolved photoemission spectroscopy: R.-Y. Liu, Y. Ogawa, P. Chen, K. Ozawa, T. Suzuki, M. Okada, T. Someya, Y. Ishida, K. Okazaki, S. Shin, T.-C.
Chiang and I. Matsuda, Sci. Rep. 7 (2017) 15981(1-7).
13. †*Interface Electronic Structure at the Topological Insulator-Ferrimagnetic Insulator Junction: Y. Kubota, K. Murata,
J. Miyawaki, K. Ozawa, M. Onbasli, T. Shirasawa, B. Feng, Sh. Yamamoto, R.-Y. Liu, S. Yamamoto, S. Mahatha,
P. Sheverdyaeva, P. Moras, C. Ross, S. Suga, Y. Harada, K. Wang and I. Matsuda, J. Phys. Condens. Matter 29 (2017)055002(1-6).

† Joint research with outside partners.

ISSP Activity Report 2017189

14. †*Polarization dependence of resonant magneto-optical Kerr effect measured by two types of figure-8 undulators:
Y. Kubota, Sh. Yamamoto, T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama,
M. Taguchi, S. Yamamoto, M. Tsunoda, H. Wadati, S. Shin and I. Matsuda, J. Electron. Spectrosc. Relat. Phenom. 220(2017) 17-20.
15. Measurement of the Resonant Magneto-Optical Kerr Effect Using a Free Electron Laser: S. Yamamoto and I. Matsuda,Appl. Sci. 7 (2017) 662 (23 pages).
16. *Surface state of the dual topological insulator Bi0.91Sb0.09 (11-2): I. Matsuda, K. Yaji, A. A. Taskin, M. D'angelo,
R. Yukawa, Y. Ohtsubo, P. Le Fèvre, F. Bertran, S. Yoshizawa, A. Taleb-Ibrahimi, A. Kakizaki, Y. Ando and F. Komori,Phys. B: Condensed Matter 516 (2017) 100-104.
17. *Surface electronic states of Au-induced nanowires on Ge(0 0 1): K. Yaji, R. Yukawa, S. Kim, Y. Ohtsubo, P. L. Fèvre,F. Bertran, A. Taleb-Ibrahimi, I. Matsuda, K. Nakatsuji, S. Shin and F. Komori, J. Phys.: Condens. Matter 30 (2018)075001(1-7).
18. *Alkali-metal induced band structure deformation investigated by angle-resolved photoemission spectroscopy andfirst-principles calculations: S. Ito, B. Feng, M. Arita, T. Someya, W. -C. Chen, A. Takayama, T. Iimori, H. Namatame,
M. Taniguchi, C. -M. Cheng, S. -J. Tang, F. Komori and I. Matsuda, Phys. Rev. B 97 (2018) 155423(1-8).
19. *Peculiar bonding associated with atomic doping and hidden honeycombs in borophene: C.-C. Lee, B. Feng,
M. D'angelo, R. Yukawa, R.-Y. Liu, T. Kondo, H. Kumigashira, I. Matsuda and T. Ozaki, Phys. Rev. B 97 (2018) 075430(1-5).
20. *Element Selectivity in Second-Harmonic Generation of GaFeO 3 by a Soft-X-Ray Free-Electron Laser: Sh.
Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi, Y. Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K. Horiba,
H. Yumoto, T. Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa, S. Yamamoto, M. Kotsugi, H. Wadati,
H. Kumigashira, T. Arima, S. Shin and I. Matsuda, Phys. Rev. Lett. 120 (2018) 223902(1-5).
21. Controlling the surface photovoltage on WSe 2 by surface chemical modification: R.-Y. Liu, K. Ozawa, N. Terashima,
Y. Natsui, B. Feng, S. Ito, W.-C. Chen, C.-M. Cheng, S. Yamamoto, H. Kato, T.-C. Chiang and I. Matsuda, Appl. Phys.
Lett. 112 (2018) 211603(1-5).
22. *Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,D. Oumbarek, M. Fujisawa, T. Someya, Y. Takahashi, T. Yamamoto, N. Ishiia, K. Yajia, S. Yamamoto, T. Kanai,
K. Okazaki, M. Kotsugi, J. Itatani, S. Shin and I. Matsuda, J. Electron Spectrosc. Relat. Phenom. 222 (2018) 68-73.
23. *A Table-Top Formation of Bilayer Quasi-Free-Standing Epitaxial-Graphene on SiC(0001) by Microwave Annealing in
Air: K.-S. Kim, G.-H. Park, H. Fukidome, T. Someya, T. Iimori, F. Komori, I. Matsuda and M. Suemitsu, Carbon 130(2018) 792-798.
24. †*Strong Hydrogen Bonds at the Interface between Proton-Donating and -Accepting Self-Assembled Monolayers on
Au(111): H. S. Kato, S. Yoshimoto, A. Ueda, S. Yamamoto, Y. Kanematsu, M. Tachikawa, H. Mori, J. Yoshinobu and
I. Matsuda, Langmuir 34 (2018) 2189-2197.
25. * 物質科学、この 1 年「ボロフェンにおけるディラックフェルミオン」: 松田 巌 , パリティ 33 (2018) 36-38.
26. Correlation between Photocatalytic Activity and Carrier Lifetime: Acetic Acid on Single-Crystal Surfaces of Anatase
and Rutile TiO 2: K. Ozawa, S. Yamamoto, R. Yukawa, R.-Y. Liu, N. Terashima, Y. Natsui, H. Kato, K. Mase and
I. Matsuda, J. Phys. Chem. C 122 (2018) 9562-9569.
27. *Discovery of 2D Anisotropic Dirac Cones: B. Feng, J. Zhang, S. Ito, M. Arita, C. Cheng, L. Chen, K. Wu, F. Komori,O. Sugino, K. Miyamoto, T. Okuda, S. Meng and I. Matsuda, Adv. Mater. 30 (2018) 1704025(1-6).
28. Single-layer dual germanene phases on Ag(111): C.-H. Lin, A. Huang, W. W. Pai, W.-C. Chen, T.-Y. Chen, T.-R. Chang,
R. Yukawa, C.-M. Cheng, C.-Y. Mou, I. Matsuda, T. -C. Chiang, H. -T. Jeng and S. -J. Tang, Phys. Rev. Materials 2(2018) 024003(1-8).
29. Time-Resolved Photoelectron Spectroscopy: I. Matsuda, Compendium of Surface and Interface Analysis Contributed
Book (2018) pages.
30. Time-Resolved Photoelectron Spectroscopy: I. Matsuda, Encyclopedia of Interfacial Chemistry: Surface Science andElectrochemistry Contributed Book (2018) 8 pages.

* Joint research among groups within ISSP.

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Kobayashi group
We are developing ultra-short and high-power laser system for photoemission spectroscopy and extreme light-matter interaction.
We have started a study of a laser processing by using these lasers. High-rep rate and ultrashort lasers are also studied.
1.

†*High-speed 100 MHz strain monitor using fiber Bragg grating and optical filter for magnetostriction measurements

under ultrahigh magnetic fields: A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi, H. Watanabe and K. Sato,
Rev. Sci. Instrum. 88 (2017) 083906(1-5).
2.

High-power and high-conversion efficiency deep ultraviolet (DUV) laser at 258  nm generation in the CsLiB6O10(CLBO) crystal with a beam quality of M2<15: H. Xuan, C. Qu, S. Ito and Y. Kobayashi, Opt. Lett. 42 (2017)3133-3136.

3.

1 W solid-state 193 nm coherent light by sum-frequency generation: H. Xuan, C. Qu, Z. Zhao, S. Ito and Y. Kobayashi,
Opt. Express 25 (2017) 29172-29179.

4.

Magneto-optic modulator for high bandwidth cavity length stabilization: T. Nakamura, S. Tani, I. Ito and Y. Kobayashi,
Opt. Express 25 (2017) 4994-5000.

5.

Realization of a mW-level 10.7-eV (λ = 115.6 nm) laser by cascaded third harmonic generation of a Yb:fiber CPA laser
at 1-MHz: Z. Zhao and Y. Kobayashi, Opt. Express 25 (2017) 13517-13526.

6.

Stable CW laser based on low thermal expansion ceramic cavity with 4.9 mHz/s frequency drift: I. Ito, A. Silva,
T. Nakamura and Y. Kobayashi, Opt. Express 25 (2017) 26020-26028.

7.

Pulse-by-pulse depth profile measurement of femtosecond laser ablation on copper: S. Tani and Y. Kobayashi, Appl.
Phys. A 124 (2018) 265(1-5).

8.

High-Power, Solid-State, Deep Ultraviolet Laser Generation: H. Xuan, H. Igarashi, S. Ito, C. Qu, Z. Zhao and
Y. Kobayashi, Appl. Sci. 8 (2018) 223 (1-13).

9.

Efficient high harmonics generation by enhancement cavity driven with a post-compressed FCPA laser at 10 MHz:Z. Zhao, A. Ozawa, M. Kuwata-Gonokami and Y. Kobayashi, High Pow Laser Sci Eng 6 (2018) e19.

10. 149.8 nm, the shortest wavelength generated by phase matching in nonlinear crystals: T. Nakazato, I. Ito, Y. Kobayashi,
X. Wang, C. Chen and S. Watanabe, in: Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials
and Devices XVI (SPIE, 2017), 1008804(1-10).
11. Observing laser ablation dynamics with sub-picosecond temporal resolution: S. Tani and Y. Kobayashi, in: Proceedings
Volume 10252, Optical Manipulation Conference (SPIE, 2017), 102520H.
12. ファイバーレーザーベース狭帯域 193nm 固体レーザーの開発 : 伊藤 紳二 , 玄 洪文 , 五十嵐 裕紀 , 趙 智剛 , 小林 洋平 ,光学 46 (2017) 125-130.
13. 「高輝度・高効率次世代レーザー技術開発」特集号によせて : 小林 洋平 , レーザー研究 45 No.9 (2017) 553.
14. NEDO 高輝度・高効率次世代レーザー技術開発プロジェクト : 小林 洋平 , レーザー加工学会誌 24 No.2 (2017) 1.

Itatani group
We built a high harmonic beamline for attosecond soft X-ray spectroscopy. The development was nearly completed, andattosecond soft-X-ray pulses around the carbon K edge (~284 eV) are routinely generated. We have also started to explore
strong field phenomena in solids using intense mid-IR sources. We produced high harmonics of 5-μm light in GaSe crystals,
and observed unusual behavior in polarization rotation. Photoemission experiments with a nanotip is expanded to a grating-likestructures where we observe clear enhancement due to surface-propagating plasmons. Development of high-energy velocity
map imaging apparatus was continued. Photoelectrons up to 1 keV were successfully imaged in the momentum space. Collaboration with Shin, Okazaki, and Matsuda groups was continued for time-resolved ARPES and Kerr-rotation experiments.
1.

*Suppression of supercollision carrier cooling in high mobility graphene on SiC(0001): T. Someya, H. Fukidome,

H. Watanabe, T. Yamamoto, M. Okada, H. Suzuki, Y. Ogawa, T. Iimori, N. Ishii, T. Kanai, K. Tashima, B. Feng,
S. Yamamoto, J. Itatani, F. Komori, K. Okazaki, S. Shin and I. Matsuda, Phys. Rev. B 95 (2017) 165303(1-7).
2.

†*Ultrafast Melting of Spin DensityWave Order in BaFe2As2 Observed by Time- and Angle-Resolved Photoemission

Spectroscopy with Extreme-Ultraviolet Higher Harmonic Generation: H. Suzuki, K. Okazaki, T. Yamamoto, T. Someya,
M. Okada, K. Koshiishi, M. Fujisawa, T. Kanai, N. Ishii, M. Nakajima, H. Eisaki, K. Ono, H. Kumigashira, J. Itatani,
A. Fujimori and S. Shin, Phys. Rev. B 95 (2017) 165112(1-6).

† Joint research with outside partners.

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3.

高強度中赤外光源によって拓かれる固体強光子場科学 : 金島 圭佑 , 水野 智也 , 石井 順久 , 板谷 治郎 , 応用物理 86(2017) 892-896.
4.

Observation of selection rules for circularly polarized fields in high-harmonic generation from a crystalline solid:
N. Saito, P. Xia, F. Lu, T. Kanai, J. Itatani and N. Ishii, Optica 4 (2017) 1333-1336.

5.

†*Antiphase Fermi-surface modulations accompanying displacement excitation in a parent compound of iron-based

superconductors: K. Okazaki, H. Suzuki, T. Suzuki, T. Yamamoto, T. Someya, Y. Ogawa, M. Okada, M. Fujisawa,T. Kanai, N. Ishi, J. Itatani, M. Nakajima, H. Eisaki, A. Fujimori and S. Shin, Phys. Rev. B 97 (2018) 121107(R)(1-6).
6.

*Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,D. Oumbarek, M. Fujisawa, T. Someya, Y. Takahashi, T. Yamamoto, N. Ishiia, K. Yajia, S. Yamamoto, T. Kanai,
K. Okazaki, M. Kotsugi, J. Itatani, S. Shin and I. Matsuda, J. Electron Spectrosc. Relat. Phenom. 222 (2018) 68-73.
7.

†Generation of sub-two-cycle millijoule infrared pulses in an optical parametric chirped-pulse amplifier and theirapplication to soft x-ray absorption spectroscopy with high-flux high harmonics: N. Ishii, K. Kaneshima, T. Kanai,
S. Watanabe and J. Itatani, J. Opt. 20 (2018) 014003(1-6).
8.

Polarization-Resolved Study of High Harmonics from Bulk Semiconductors: K. Kaneshima, Y. Shinohara, K. Takeuchi,
N. Ishii, K. Imasaka, T. Kaji, S. Ashihara, K. L. Ishikawa and J. Itatani, Phys. Rev. Lett. (2018), accepted for publication.

9.

Generation of sub-two-cycle CEP-stable optical pulses at 3.5 um from a KTA-based optical parametric amplifier withmultiple-plate compression: F. Lu, P. Xia, Y. Matsumoto, T. Kanai, N. Ishii and J. Itatani, Opt. Lett. (2018), accepted for
publication.

Harada group
This year we have performed 17 collaborative works at BL07LSU HORNET endstation, four of which are related to the study
on the behavior of water at various circumstances (water in plasma, water encapsulated in an electrolyte, hydrated water, andinterfacial water). We also published four papers related to water. RIXS in operando conditions were frequently used for the
study of fuel cell batteries and rechargeable Li- and Na-ion batteries. Angle (momentum) resolved system was also utilized forthe oxygen analyses of strongly correlated systems like multi layered high Tc cuprate Bi2223 and other hole-doped cuprates, aswell as for the soft X-ray inelastic diffraction (SXID) of LaSrFeO4 more precisely taking the preliminary results of the previous
year. For future studies on water related materials and SXID verification a liquid jet system was installed which removed thevacuum compatible membrane separating atmospheric pressure and high vacuum expecting more precise and quantitative
analysis of the intensity of elastic scattering, which may also develop a new field that combines spectroscopy and diffraction in
the soft X-ray region. Continuous studies on bio-inspired or bio-model compounds are ongoing, patiently and systematicallycontrolling radiation damage problems and some of them (model compounds of Fe-S proteins, Mn cluster in photosystem II)
have already been on the publication stage.
1.

†Dzyaloshinskii-Moriya interaction in α-Fe2O3 measured by magnetic circular dichroism in resonant inelastic soft x-ray

2.

†Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray

scattering: J. Miyawaki, S. Suga, H. Fujiwara, M. Urasaki, H. Ikeno, H. Niwa, H. Kiuchi and Y. Harada, Phys. Rev. B 96
(2017) 214420(1-9).
scattering at the oxygen K edge: K. Ishii, T. Tohyama, S. Asano, K. Sato, M. Fujita, S. Wakimoto, K. Tustsui, S. Sota, J.
Miyawaki, H. Niwa, Y. Harada, J. Pelliciari, Y. Huang, T. Schmitt, Y. Yamamoto and J. Mizuki, Phys. Rev. B 96 (2017)
115148(1-8).

3.

Temperature-Independent Nuclear Quantum Effects on the Structure of Water: K. H. Kim, H. Pathak, A. Späh,
F. Perakis, D. Mariedahl, J. Sellberg, T. Katayama, Y. Harada, H. Ogasawara, L. G. M. Pettersson and A. Nilsson, Phys.
Rev. Lett. 119 (2017) 075502(1-6).

4.

†Enhancement of the Hydrogen-Bonding Network of Water Confined in a Polyelectrolyte Brush: K. Yamazoe, Y. Higaki,
Y. Inutsuka, J. Miyawaki, Y.-T. Cui, A. Takahara and Y. Harada, Langmuir 33 (2017) 3954-3959.

5.

†Measurement of the Ligand Field Spectra of Ferrous and Ferric Iron Chlorides Using 2p3d RIXS: A. W. Hahn, B. E. V.

Kuiken, M. A. Samarai, M. Atanasov, T. Weyhermüller, Y.-T. Cui, J. Miyawaki, Y. Harada, A. Nicolaou and S. DeBeer,
Inorg. Chem. 56 (2017) 8203-8211.
6.

†In-Situ 2p3d Resonant Inelastic X-ray Scattering Tracking Cobalt Nanoparticle Reduction: B. Liu, M. M. van Schoo-neveld, Y.-T. Cui, J. Miyawaki, Y. Harada, T. O. Eschemann, K. P. D. Jong, M. U. Delgado-Jaime and F. M. F. D. Groot,
J. Phys. Chem. C 121 (2017) 17450-17456.

* Joint research among groups within ISSP.

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7.

†Probing the OH Stretch in Different Local Environments in Liquid Water: Y. Harada, J. Miyawaki, H. Niwa,

8.

Wetting Induced Oxidation of Pt-based Nano Catalysts Revealed by In Situ High Energy Resolution X-ray Absorption
Spectroscopy: Y.-T. Cui, Y. Harada, H. Niwa, T. Hatanaka, N. Nakamura, M. Ando, T. Yoshida, K. Ishii, D. Matsumura,
H. Oji, H. Ofuchi and M. Oshima, Sci. Rep. 7 (2017) 1482(1-8).

9.

†*Interface Electronic Structure at the Topological Insulator-Ferrimagnetic Insulator Junction: Y. Kubota, K. Murata,

K. Yamazoe, L. G. M. Pettersson and A. Nilsson, J. Phys. Chem. Lett. 8 (2017) 5487-5491.

J. Miyawaki, K. Ozawa, M. Onbasli, T. Shirasawa, B. Feng, Sh. Yamamoto, R.-Y. Liu, S. Yamamoto, S. Mahatha,
P. Sheverdyaeva, P. Moras, C. Ross, S. Suga, Y. Harada, K. Wang and I. Matsuda, J. Phys. Condens. Matter 29 (2017)055002(1-6).
10. †A Compact Permanent Magnet System for Measuring Magnetic Circular Dichroism in Resonant Inelastic Soft X-ray
Scattering: J. Miyawaki, S. Suga, H. Fujiwara, H. Niwa, H. Kiuchi and Y. Harada, J. Sync. Rad. 24 (2017) 449-455.
11. †Electronic structure and magnetic properties of the half-metallic ferrimagnet Mn2VAl probed by soft x-ray spectroscopies: K. Nagai, H. Fujiwara, H. Aratani, S. Fujioka, H. Yomosa, Y. Nakatani, T. Kiss, A. Sekiyama, F. Kuroda, H. Fujii,
T. Oguchi, A. Tanaka, J. Miyawaki, Y. Harada, Y. Takeda, Y. Saitoh, S. Suga and R. Y. Umetsu, Phys. Rev. B 97 (2018)
035143(1-8).
12. †Raman and fuorescence-like components in resonant inelastic x-ray scattering on LaAlO3/SrTiO3 heterostructures:
F. Pfaff, H. Fujiwara, G. Berner, A. Yamasaki, H. Niwa, H. Kiuchi, A. Gloskovskii, W. Drube, J. Gabel, O. Kirilmaz,
A. Sekiyama, J. Miyawaki, Y. Harada, S. Suga, M. Sing and R. Claessen, Phys. Rev. B 97 (2018) 035110(1-8).
13. *Tensile-Strain-Dependent Spin States in Epitaxial LaCoO3 Thin Films: Y. Yokoyama, Y. Yamasaki, M. Taguchi,
Y. Hirata, K. Takubo, J. Miyawaki, Y. Harada, D. Asakura, J. Fujioka, M. Nakamura, H. Daimon, M. Kawasaki,
Y. Tokura and H. Wadati, Phys. Rev. Lett. 120 (2018) 206402(1-5).
14. †Cobalt-to-vanadium charge transfer in polyoxometalate water oxidation catalysts revealed by 2p3d resonant inelastic
X-ray scattering: B. Liu, E. N. Glass, R.-P. Wang, Y.-T. Cui, Y. Harada, D.-J. Huang, S. Schuppler, C. L. Hill and F. M.
F. de Groot, Phys. Chem. Chem. Phys. 20 (2018) 4554-4562.
15. Resonant Inelastic X-ray Scattering (RIXS): Y. Harada, Synchrotron Radiation News 31 (2018) 2.

Wadati group
We succeeded in the construction of time-resolved soft x-ray measurement systems in SPring-8 BL07LSU. We captured ultrafast magnetic dynamics of FePt thin films by using this system. We also determined the element-specific complex permittivity
using a soft x-ray phase modulator in this beamline.
1.

*Determination of the element-specific complex permittivity using a soft x-ray phase modulator: Y. Kubota, Y. Hirata,

J. Miyawaki, S. Yamamoto, H. Akai, R. Hobara, Sh. Yamamoto, K. Yamamoto, T. Someya, K. Takubo, Y. Yokoyama,
M. Araki, M. Taguchi, Y. Harada, H. Wadati, M. Tsunoda, R. Kinjo, A. Kagamihata, T. Seike, M. Takeuchi, T. Tanaka,
S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 214417(1-6).
2.

*L-edge resonant magneto-optical Kerr effect of a buried Fe nanofilm: Y. Kubota, M. Taguchi, H. Akai, Sh. Yamamoto,

T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama, S. Yamamoto, M. Tsunoda,
H. Wadati, S. Shin and I. Matsuda, Phys. Rev. B 96 (2017) 134432(1-6).
3.

Orbital order and fluctuations in the two-leg ladder materials BaFe2X3 (X=S and Se) and CsFe2Se3: K. Takubo,
Y. Yokoyama, H. Wadati, S. Iwasaki, T. Mizokawa, T. Boyko, R. Sutarto and F. He, Phys. Rev. B 96 (2017) 115157(1-7).

4.

時間分解 X 線回折・分光で見た遷移金属化合物 : 和達 大樹 , 固体物理 52(5) (2017) 45-53.

5.

*Capturing

6.

放射光 X 線回折を用いた遷移金属酸化物薄膜の電荷・スピンの整列状態の観測 : 和達 大樹 , 山本 航平 , 表面科学 38

ultrafast magnetic dynamics by time-resolved soft x-ray magnetic circular dichroism: K. Takubo,
K. Yamamoto, Y. Hirata, Y. Yokoyama, Y. Kubota, S. Yamamoto, S. Yamamoto, I. Matsuda, S. Shin, T. Seki,
K. Takanashi and H. Wadati, Appl. Phys. Lett. 110 (2017) 162401(1-5).
(2017) 602-607.

7.

Resonant Soft X-Ray Scattering Studies of Transition-Metal Oxides: H. Wadati, Springer Tracts in Modern Physics 269(2017) 159-196.

† Joint research with outside partners.

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8.

Electronic Structures of SrIrO3/SrTiO3 Superlattices Revealed by Synchrotron X-Ray Diffraction and Spectroscopy:
H. Wadati, S. Yamamura, K. Ishii, M. Suzuki, E. Ikenaga, J. Matsuno and H. Takagi, Adv. X-Ray. Chem. Anal., Japan 48(2017) 215-223.

9.

†*Polarization dependence of resonant magneto-optical Kerr effect measured by two types of figure-8 undulators:

Y. Kubota, Sh. Yamamoto, T. Someya, Y. Hirata, K. Takubo, M. Araki, M. Fujisawa, K. Yamamoto, Y. Yokoyama,
M. Taguchi, S. Yamamoto, M. Tsunoda, H. Wadati, S. Shin and I. Matsuda, J. Electron. Spectrosc. Relat. Phenom. 220(2017) 17-20.
10. Commensurate versus incommensurate charge ordering near the superconducting dome in Ir1-xPtxTe2 revealed byresonant x-ray scattering: K. Takubo, K. Yamamoto, Y. Hirata, H. Wadati, T. Mizokawa, R. Sutarto, F. He, K. Ishii,
Y. Yamasaki, H. Nakao, Y. Murakami, G. Matsuo, H. Ishii, M. Kobayashi, K. Kudo and M. Nohara, Phys. Rev. B 97(2018) 205142(1-9).
11. Thickness dependence and dimensionality effects on charge and magnetic orderings in La1/3Sr2/3FeO3 thin films:
K. Yamamoto, Y. Hirata, M. Horio, Y. Yokoyama, K. Takubo, M. Minohara, H. Kumigashira, Y. Yamasaki, H. Nakao,
Y. Murakami, A. Fujimori and H. Wadati, Phys. Rev. B 97 (2018) 075134(1-6).
12. †*Electronic Structure of Ce-Doped and -Undoped Nd2CuO4 Superconducting Thin Films Studied by Hard X-Ray
Photoemission and Soft X-Ray Absorption Spectroscopy: M. Horio, Y. Krockenberger, K. Yamamoto, Y. Yokoyama,
K. Takubo, Y. Hirata, S. Sakamoto, K. Koshiishi, A. Yasui, E. Ikenaga, S. Shin, H. Yamamoto, H. Wadati andA. Fujimori, Phys. Rev. Lett. 120 (2018) 257001(1-6).
13. *Element Selectivity in Second-Harmonic Generation of GaFeO 3 by a Soft-X-Ray Free-Electron Laser: Sh.
Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi, Y. Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K. Horiba,
H. Yumoto, T. Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa, S. Yamamoto, M. Kotsugi, H. Wadati,
H. Kumigashira, T. Arima, S. Shin and I. Matsuda, Phys. Rev. Lett. 120 (2018) 223902(1-5).
14. *Tensile-Strain-Dependent Spin States in Epitaxial LaCoO3 Thin Films: Y. Yokoyama, Y. Yamasaki, M. Taguchi,
Y. Hirata, K. Takubo, J. Miyawaki, Y. Harada, D. Asakura, J. Fujioka, M. Nakamura, H. Daimon, M. Kawasaki,
Y. Tokura and H. Wadati, Phys. Rev. Lett. 120 (2018) 206402(1-5).
15. スピンのダイナミクスを元素別に見る（Keyword: 時間分解 XMCD）: 和達 大樹 , 日本物理学会誌 73 (2018) 4.
16. *X-Ray Absorption Spectroscopy of 4f Compounds and Future Directions Toward Time-resolved Measurements:
H. Wadati, K. Takubo, T. Tsuyama, Y. Yokoyama, K. Yamamoto, Y. Hirata, T. Ina, K. Nitta, M. Mizumaki, T. Togashi,
S. Suzuki, Y. Matsumoto and S. Nakatsuji, Adv. X-Ray. Chem. Anal., Japan 49 (2018) 169-175.

Kondo group
We use angle-resolved photoemission spectroscopy (ARPES) with ultrahigh energy resolution. The main findings in 2017 are
as follows: (1) magnetic Weyl fermions in Mn3Sn and (2) Bogoliubov Band Hybridization in the Optimally Doped Trilayer
cuprate. We have also studied the spin-polarized surface states of Bi/Ag(111) and Bi2Se3 with laser photon source.
1.

*Calculation of spin states of photoelectrons emitted from spin-polarized surface states of Bi(111) surfaces with a mirror

2.

*Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spin-symmetry: K. Kobayashi, K. Yaji, K. Kuroda and F. Komori, Phys. Rev. B 95 (2017) 205436(1-13).

split surface states: R. Noguchi, K. Kuroda, K. Yaji, K. Kobayashi, M. Sakano, A. Harasawa, T. Kondo, F. Komori and
S. Shin, Phys. Rev. B 95 (2017) 041111(R)(1-6).
3.

Ultrafast energy- and momentum-resolved surface Dirac photocurrents in the topological insulator Sb2Te3: K. Kuroda,
J. Reimann, K. A. Kokh, O. E. Tereshchenko, A. Kimura, J. Güdde and U. Höfer, Phys. Rev. B 95 (2017) 081103(R)(1-5).

4.

†*Visualizing the evolution of surface localization in the topological state of Bi2Se3 by circular dichroism in laser-based

angle-resolved photoemission spectroscopy: T. Kondo, Y. Nakashima, Y. Ishida, A. Kikkawa, Y. Taguchi, Y. Tokura andS. Shin, Phys. Rev. B 96 (2017) 241413(1-5).
5.

†*Observation of Bogoliubov Band Hybridization in the Optimally Doped Trilayer Bi2Sr2Ca2Cu3O10+δ: S. Kunisada,S. Adachi, S. Sakai, N. Sasaki, M. Nakayama, S. Akebi, K. Kuroda, T. Sasagawa, T. Watanabe, S. Shin and T. Kondo,
Phys. Rev. Lett. 119 (2017) 217001(1-5).

6.

中赤外パルスレーザーを用いた時間分解二光子光電子分光によるトポロジカル絶縁体 Sb2Te3 の光誘起表面電流測定 : 黒田 健太 , J. REIMANN, J. GÜDDE and U. HÖFER, 表面科学 38 巻 8 号 (2017) 400-405.

* Joint research among groups within ISSP.

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7.

†*Effect of physisorption of inert organic molecules on Au (111) surface electronic states: H. Mizushima, H. Koike,8.

*Signatures of a time-reversal symmetric Weyl semimetal with only four Weyl points: I. Belopolski, P. Yu, D. S.

K. Kuroda, Y. Ishida, M. Nakayama, K. Mase, T. Kondo, S. Shin and K. Kanai, Phys. Chem. Chem. Phys. 19 (2017)
18646 (1-6).

Sanchez, Y. Ishida, T.-R. Chang, S. S. Zhang, S.-Y. Xu, H. Zheng, G. Chang, G. Bian, H.-T. Jeng, T. Kondo, H. Lin,
Z. Liu, S. Shin and M. Zahid Hasan, Nat. Commun. 8 (2017) 942(1-7).
9.

*Spin-dependent quantum interference in photoemission process from spin-orbit coupled states: K. Yaji, K. Kuroda,

S. Toyohisa, A. Harasawa, Y. Ishida, S. Watanabe, C. Chen, K. Kobayashi, F. Komori and S. Shin, Nat. Commun. 8(2017) 14588(1-6).

10. *Evidence for magnetic Weyl fermions in a correlated metal: K. Kuroda, T. Tomita, M. -T. Suzuki, C. Bareille,
A. A. Nugroho, P. Goswami, M. Ochi, M. Ikhlas, M. Nakayama, S. Akebi, R. Noguchi, R. Ishii, N. Inami, K. Ono,
H. Kumigashira, A. Varykhalov, T. Muro, T. Koretsune, R. Arita, S. Shin, T. Kondo and S. Nakatsuji, Nature Mater. 16(2017) 1090-1095.
11. *Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb: J. Ma,
C. Yi, B. Lv, Z. Wang, S. Nie, L. Wang, L. Kong, Y. Huang, P. Richard, P. Zhang, K. Yaji, K. Kuroda, S. Shin, H. Weng,
B. Andrei Bernevig, Y. Shi, T. Qian and H. Ding, Sci. Adv. 3 (2017) 1602415(1-5).
12. *Kondo hybridization and quantum criticality in β−YbAlB4 by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama,
K. Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).
13. †*Experimental Determination of the Topological Phase Diagram in Cerium Monopnictides: K. Kuroda, M. Ochi,
H. S. Suzuki, M. Hirayama, M. Nakayama, R. Noguchi, C. Bareille, S. Akebi, S. Kunisada, T. Muro, M. D. Watson,
H. Kitazawa, Y. Haga, T. K. Kim, M. Hoesch, S. Shin, R. Arita and T. Kondo, Phys. Rev. Lett. 120 (2018) 086402(1-6).
14. *Observation of topological superconductivity on the surface of an iron-based superconductor: P. Zhang, K. Yaji,
T. Hashimoto, Y. Ota, T. Kondo, K. Okazaki, Z. Wang, J. Wen, G. D. Gu, H. Ding and S. Shin, Science 360 (2018)
182-186.
15. * レーザー励起スピン分解光電子分光で解き明かす光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 光学 47(2018) 142-147.
16. * レーザーで電子のスピン方向を自由に制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , レーザー加工学会誌 25 (2018)39-42.
17. †*Experimental Methods for Spin and Angle-Resolved Photoemission Spectroscpy Combined with Polarization Variable
Laser: K. Kuroda, K. Yaji, A. Harasawa, R. Noguchi, T. Kondo, F. Komori and S. Shin, JoVE (2018), in print.
18. * 固体表面電子におけるスピン軌道エンタングルメントと光スピン制御 : 矢治光 一郎 , 黒田 健太 , 小森 文夫 , 辛 埴 , 個体
物理 52 (2017) 559-571.

Matsunaga group
Matsunaga group has started on July 2017 to investigate light-matter interactions and light-induced nonequilibrium phenomena
in materials by utilizing terahertz wave, infrared, visible, and ultraviolet coherent light sources based on ultrafast pulsed laser
technology. A stable mode-locked Ti:Sapphire oscillator with tunable bandwidth was installed for seed of an regenerative amplified laser system with pulse width less than 50 fs, which will be used as a source of ultrabroadband mid-infrared laser pulse. In
addition, a compact diode-pump Yb:KGW femtosecond laser system was also installed for intense terahertz pulse generation.
We developed conventional terahertz time-domain spectroscopy system and investigated terahertz electromagnetic response ofquantum materials such as antiferromagnets fabricated by Nakatsuji group.

Okazaki group
We have investigated superconducting-gap structures of unconventional superconductors by a low-temperature and highresolution laser ARPES apparatus and transient electronic structures in photo-excited non-equilibrium states by a time-resolved
ARPES apparatus using EUV and SX lasers. In the fiscal year 2017, we have revealed superconducting gap anisotropy sensitive to nematic domains in FeSe, where it has been reported that time-reversal symmetry is broken around its nematic domainboundaries. In addition, we have found displacive-type excitation of coherent phonons in a parent compound of iron-based
superconductors, BaFe2As2, and suggested a possibility that photo-induced superconductivity can be realized in this material.

† Joint research with outside partners.

ISSP Activity Report 2017

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1.

*Suppression of supercollision carrier cooling in high mobility graphene on SiC(0001): T. Someya, H. Fukidome,

H. Watanabe, T. Yamamoto, M. Okada, H. Suzuki, Y. Ogawa, T. Iimori, N. Ishii, T. Kanai, K. Tashima, B. Feng,
S. Yamamoto, J. Itatani, F. Komori, K. Okazaki, S. Shin and I. Matsuda, Phys. Rev. B 95 (2017) 165303(1-7).
2.

†*Ultrafast Melting of Spin DensityWave Order in BaFe2As2 Observed by Time- and Angle-Resolved Photoemission

Spectroscopy with Extreme-Ultraviolet Higher Harmonic Generation: H. Suzuki, K. Okazaki, T. Yamamoto, T. Someya,
M. Okada, K. Koshiishi, M. Fujisawa, T. Kanai, N. Ishii, M. Nakajima, H. Eisaki, K. Ono, H. Kumigashira, J. Itatani,
A. Fujimori and S. Shin, Phys. Rev. B 95 (2017) 165112(1-6).
3.

†*Unusual nodal behaviors of the superconducting gap in the iron-based superconductor Ba(Fe4.

*Unconventional superconductivity in the BiS -based layered superconductor NdO
2
0.71F0.29BiS2: Y. Ota, K. Okazaki,

0.65Ru0.35)2As2: Effectsof spin-orbit coupling: L. Liu, K. Okazaki, T. Yoshida, H. Suzuki, M. Horio, L. C. C. Ambolode II, J. Xu, S. Ideta,
M. Hashimoto, D. H. Lu, Z. -X. Shen, Y. Ota, S. Shin, M. Nakajima, S. Ishida, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki,
T. Mikami, T. Kakeshita, Y. Yamakawa, H. Kontani, S. Uchida and A. Fujimori, Phys. Rev. B 95 (2017) 104504(1-5).

H. Q. Yamamoto, T. Yamamoto, S. Watanabe, C. Chen, M. Nagao, S. Watauchi, I. Tanaka, Y. Takano and S. Shin, Phys.
Rev. Lett. 118 (2017) 167002(1-6).
5.

*Femtosecond to picosecond transient effects in WSe

6.

†*Antiphase Fermi-surface modulations accompanying displacement excitation in a parent compound of iron-based

2 observed by pump-probe angle-resolved photoemission spectroscopy: R.-Y. Liu, Y. Ogawa, P. Chen, K. Ozawa, T. Suzuki, M. Okada, T. Someya, Y. Ishida, K. Okazaki, S. Shin, T.-C.
Chiang and I. Matsuda, Sci. Rep. 7 (2017) 15981(1-7).

superconductors: K. Okazaki, H. Suzuki, T. Suzuki, T. Yamamoto, T. Someya, Y. Ogawa, M. Okada, M. Fujisawa,T. Kanai, N. Ishi, J. Itatani, M. Nakajima, H. Eisaki, A. Fujimori and S. Shin, Phys. Rev. B 97 (2018) 121107(R)(1-6).
7.

*Observation of topological superconductivity on the surface of an iron-based superconductor: P. Zhang, K. Yaji,

8.

*Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,

T. Hashimoto, Y. Ota, T. Kondo, K. Okazaki, Z. Wang, J. Wen, G. D. Gu, H. Ding and S. Shin, Science 360 (2018)
182-186.
D. Oumbarek, M. Fujisawa, T. Someya, Y. Takahashi, T. Yamamoto, N. Ishiia, K. Yajia, S. Yamamoto, T. Kanai,
K. Okazaki, M. Kotsugi, J. Itatani, S. Shin and I. Matsuda, J. Electron Spectrosc. Relat. Phenom. 222 (2018) 68-73.

9.

*Superconducting gap anisotropy sensitive to nematic domains in FeSe: T. Hashimoto, Y. Ota, H. Q. Yamamoto,Y. Suzuki, T. Shimojima, S. Watanabe, C. Chen, S. Kasahara, Y. Matsuda, T. Shibauchi, K. Okazaki and S. Shin, Nat.
Commun. 9 (2018) 282(1-7).
10. †*Superconducting Pairing of Topological Surface States in Bismuth Selenide Films on Niobium: D. Flötotto, Y. Ota,
Y. Bai, C. Zhang, K. Okazaki, A. Tsuzuki, T. Hashimoto, J. N. Eckstein, S. Shin and T. -C. Chiang, Sci. Adv. 4 (2018)
eaar7214(1-5).

* Joint research among groups within ISSP.

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The Institute for Solid State Physics (ISSP), The University of Tokyo
Address

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