2018Ⓒ 2019 The Institute for Solid State Physics, The University of Tokyo

Activity Report
2018

Preface					

1Research Highlights		

2 - 29

Joint Research Highlights

30 - 45

Progress of Facilities		

46 - 53

Conferences and Workshops

54 - 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 2018.
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 physics and materials science” and contribute to scienceand technology 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 in condensed
matter physics and materials science. In 2018, the number of granted jointresearch proposals is 1,330 and the total number of participants is 8,869.
The second part includes the reports on progress of facilities in 2018 as follows. (1) In International MegaGauss
Science Laboratory, the pulse magnet has achieved 1,200 T as the world strongest as an in-door record by destructive methods. (2) The Supercomputer Center (SCC) has conducted “Project for advancement of software usability inmaterials science” for enhancing the usability of the ISSP supercomputer system since 2015. In Center of Computational Materials Science, the website "MateriApps" for information on application software in computational sciencehas 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 andSynchrotron 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, eleven 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 Researchersfor “Leading Research Network Topological Phenomena in Novel Quantum Matter” (TopoNet) (2014-2016), newprograms including the short time (up to 3 months) international collaboration, international visiting researchers, andgraduate students study abroad, as well as foreign visiting professor and international workshop programs, have been
conducted since 2017.
All these facts confirm that ISSP continues to develop successfully and dynamically as the global center of excellence of condensed matter physics and materials science. We appreciate continuous support and cooperation ofcommunities for our activities.
July, 2019

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

ISSP Activity Report 20181

Research Highlights
Horizontal Lines of Nodes in the
Superconducting Gap of Sr2RuO4:
Evidence against the AnticipatedChiral p-wave Scenario
Sakakibara GroupThe layered-perovskite superconductor Sr2RuO4 has
been a leading candidate of a spin-triplet chiral p-wave
superconductor; the spin-triplet pairing (chiral state) was
suggested by the invariant spin susceptibility across Tc (timereversal symmetry breaking in the superconducting state)[1]. However, the recently-discovered first-order superconducting transition, reminiscent of the Pauli-paramagnetic
effect, under an in-plane magnetic field is likely to favor the
spin-singlet scenario [2, 3]. Moreover, whereas symmetryprotected nodes are forbidden in the spin-triplet scenario, thepresence of nodes has been suggested from various thermodynamic experiments. Thus, the order parameter of Sr2RuO4
has remained controversial.
Recently, we have developed field-angle-resolved
measurements of the specific heat as a powerful techniqueto identify the superconducting gap structure [4]. Here,in order to provide hints for resolving the puzzling issues

on Sr2RuO4, we have performed the field-angle-resolved
measurements at low temperatures down to 0.06 K byusing a high-quality single crystal (Tc = 1.505 K) [5]. By
subtracting the Schottky-type anomaly originating fromthe addenda heat capacity very precisely, we have revealed
that the low-field specific heat of our sample increases inproportion to H1/2 with no multigap structure at 0.06 K.
This behavior is in sharp contrast to the previous reports[6], and suggests that multiple gaps on the three bands (α,β, and γ) equivalently survive up to high fields and possess
nodes somewhere. In addition, the fourfold oscillation in thespecific heat observed under an in-plane rotating field [6]does not change its sign even at a low temperature of 0.04Tc
in the low-field region (Figs. 1(a) and 1(b)).
The absence of a sign change in the fourfold specific-heat
oscillation is incompatible with vertical line node scenario,
such as the dx2-y2- and dxy-wave type; the present results
are clearly different from the cases of vertical line nodesuperconductors such as CeCoIn5 [4]. Also, it is obviousthat the present observations cannot be explained within the
anticipated chiral-p-wave scenario. By contrast, the results
favorably support the presence of horizontal line nodes;
the specific-heat oscillation arises due to nodal quasiparticles that have anisotropic in-plane Fermi velocity of thecylindrical γ band. On the basis of microscopic theoretical
calculations, the observed field and temperature variations of
the specific-heat oscillation can be reproduced by assuming
the presence of horizontal line nodes on cylindrical bands
whose Fermi velocity is highly anisotropic within the plane(Fig. 1(c)). The agreement between the experimental and thecalculated results becomes even better by taking into accountthe Pauli-paramagnetic effect. Our findings, in particular thepresence of horizontal line nodes in the gap, challenge thehistorical view of Sr2RuO4 and call for reconsideration of its
order parameter.
References[1] Y. Maeno, S. Kittaka, T. Nomura, S. Yonezawa, and K. Ishida,
J. Phys. Soc. Jpn. 81, 011009 (2012).
[2] S. Yonezawa, T. Kajikawa, and Y. Maeno, Phys. Rev. Lett. 110,077003 (2013).
[3] S. Kittaka et al., Phys. Rev. B 90, 220502(R) (2014).
[4] T. Sakakibara, S. Kittaka, and K. Machida, Rep. Prog. Phys. 79,
094002 (2016).
[5] S. Kittaka et al., J. Phys. Soc. Jpn. 87, 093703 (2018).
[6] K. Deguchi et al., J. Phys. Rev. Lett. 92, 047002 (2004).

Fig. 1. (a) Field-angle dependence of the specific heat under a rotating
magnetic field within the ab plane of Sr2RuO4. (b) The H-T phase
diagram of the normalized amplitude A4 of the fourfold specific-heat
oscillation. (c) The calculated results of A4(T, H) obtained by assuming
a horizontal line node gap (inset), anisotropic in-plane Fermi velocity,and the Pauli-paramagnetic effect.

2

ISSP Activity Report 2018

Authors
S. Kittaka, S. Nakamura, T. Sakakibara, N. Kikugawaa, T. Terashimaa,
S. Ujia,b, D. A. Sokolovc, A. P. Mackenziec, K. Iried, Y. Tsutsumie,f,K. Suzukid, and K. Machidad
aNational Institute for Materials SciencebUniversity of Tsukuba
cMax Planck Institute for Chemical Physics of Solids
dRitsumeikan University
eThe University of Tokyo
fRIKEN

Construction of Three-Dimensional
Anionic Molecular Frameworks Basedon Hydrogen-Bonded Metal Dithiolene
Complexes and the Crystal Solvent EffectMori Group
Metal organic frameworks (MOFs) and covalent organic
frameworks (COFs) are a class of crystalline materials
with highly periodic structures formed through coordination or covalent bonds. Extensive synthetic studies of thesematerials have been carried out, because of the uniqueness of
their structures and the resulting functionalities, such as gas
adsorption/separation, catalytic, and sensing abilities and fuelcell properties. In addition, hydrogen-bonded (H-bonded)organic frameworks (HOFs) have recently emerged as a newclass of such crystalline materials. By utilizing H-bonds
instead of coordination or covalent bonds, HOFs have generally better crystallinity, solution processability, and flexibility
than MOFs and COFs. Such ionic frameworks are expected
to show unique features different from conventional neutral
ones, due to their intrinsic ionic nature and the accompanying
cation–anion interactions. However, the number of ionicframeworks reported so far is limited.
Recently, we have designed and synthesized a novel metal
dithiolene complex with hydrogen-bonding (H-bonding)ability, [Au(catdt)2]− (catdt: catechol-4,5-dithiolate) andsuccessfully constructed [Au(catdt)2]−-based three dimensional (3D) anionic molecular frameworks in two kindsof salts, (Ph 4 P)[Au(catdt) 2 ]·0.5H 2 O (1a) and (Ph 4 P)
[Au(catdt)2]·Et2O·n(solv) (1b; solv = Et2O and/or acetone).
To our knowledge, these are the first examples of the 3D
molecular frameworks based on H-bonded metal dithiolene
complexes. Importantly, these frameworks are constructed
through 3D intermolecular H-bonds between [Au(catdt)2]−
molecules, and have tubular channels occupied by large
Ph4P+ cations, where multiple cation–anion short contacts
are formed to stabilize the 3D framework structures. Furthermore, in addition to 1a and 1b with 3D frameworks, we haveobtained (Ph4P)[Au(catdt)2]·2THF (1c) having a 2D layered
structure. A detailed comparison of the structures of thesecompounds reveals that the included solvent molecules play
an important role in regulating the intermolecular interactions
and assembled structures. Interestingly, we have found that,
due to the differences in the H-bonding ability and molecularsize of H2O and Et2O, the wall structures of the 3D frameworks in 1a without voids and 1b with voids are qualitatively
different. [1]Three kinds of 1:1 salts of Ph4P+ and [Au(catdt)2]−,t h a t i s , ( P h 4P ) [ A u ( c a t d t ) 2] · 0 . 5 H 2O ( 1 a ) , ( P h 4P )[Au(catdt)2]·Et2O·n(solv) (1b; solv = Et2O and/or acetone),and (Ph4P)[Au(catdt)2]·2THF (1c), were synthesized, andtheir structures and chemical compositions were determinedby single crystal X-ray analysis. Recrystallization of theobtained powder from acetone/hexane, acetone/Et2O or THF/
hexane provided the salt 1a (containing H2O) as yellowish
brown needle-like crystals, 1b (containing Et2O and/or
acetone) as yellow plate-like crystals or 1c (containing THF)
as green plate-like crystals, respectively.
We first compare the structures of three kinds of novel[Au(catdt)2]−-based salts, (Ph4P)[Au(catdt)2]·0.5H2O 1a,(Ph4P)[Au(catdt)2]·Et2O·n(solv) (1b; solv = Et2O and/or
acetone), and (Ph4P)[Au(catdt)2]·2THF (1c). All of themare 1:1 salts of Ph4P+ and [Au(catdt)2]−; however, theircrystal structures are qualitatively different from each other,

Fig. 1. On the basis of the design and synthesis of an anionic gold
dithiolene complex [Au(catdt)2]− with four hydroxyl groups, we havesuccessfully constructed the first 3D molecular frameworks based on
H-bonded metal dithiolene complexes, (Ph4P)[Au(catdt)2]·0.5H2O (1a)and (Ph4P)[Au(catdt)2]·Et2O·n(solv) (1b; solv = Et2O and/or acetone)
as well as 2D layered structure of (Ph4P)[Au(catdt)2]·2THF (1c). The
key for constructing the 3D frameworks are (i) connecting the planar[Au(catdt)2]− molecules with 3D intermolecular H-bonds and (ii)introducing large Ph4P+ cations into the channels. Interestingly, metal
complexes are highly influenced by the solvent molecules included in
the crystals (especially, the molecular size and shape and H-bonding
abilities), which leads to variations in the assembled structure of
the [Au(catdt)2]− molecules; namely, a 3D framework with densely
packed walls in water containing 1a, a 3D framework with loosely
packed walls in ether-containing 1b, and a 2D layered structure in THF
containing 1c.

depending on the solvent molecules included in the crystal.
The most prominent difference is the dimensionality of
the assembled structures of [Au(catdt)2]−; namely, in thewater and ether-containing salts 1a and 1b, this planaranionic molecule forms a 3D assembled structure (i.e., 3D
framework, Fig. 1), whereas in the THF-containing salt
1c, it forms not a 3D but a 2D structure (i.e., 2D layers).
Furthermore, although both the 3D framework structuresin 1a and 1b have tubular channels with a similar size, thestructures of their walls are significantly different fromeach other; namely, the walls in 1a are densely packed
with [Au(catdt)2]−, whereas those in 1b are loosely packed
to form voids, into which the cation and Et2O molecules
partially penetrate (Fig. 1). These differences should becaused by changing the intermolecular interactions between
the component molecules upon the change of the crystal
solvent.
We finally discuss how the crystal solvent makes differences in the intermolecular interactions and assembled
structures. Here, we focus on the H-bonding ability, size,and shape of the crystal solvents. Et2O, included in the 3D
system 1b, and THF, included in the 2D system 1c, haveproton- accepting ability due to the ether oxygen atom,which actually allows them to form the H-bonds with thecatechol O–H protons of [Au(catdt)2]− molecules. On theother hand, the overall shapes of these solvent molecules
are greatly different from each other [rod-shaped (Et2O) vs.
disk-shaped (THF)], which should contribute to the great
structural difference in 1b and 1c (i.e., 3D vs. 2D). Namely,
due to the disk shape, the THF molecules are positionally(orientationally) disordered, which leads to the formationof the THF–THF H-bonds and consequently the 2D layered
structure. In contrast, the rod-shaped Et2O molecules haveno such structural disorder and additional intermolecularinteractions; thus they seem to simply occupy the space

ISSP Activity Report 20183

between the large Ph4P+ and [Au(catdt)2]− molecules without
interrupting the intermolecular interactions between the
Ph4P+ and [Au(catdt)2]− molecules for constructing the 3D
framework. Meanwhile, due to the steric bulkiness of theethyl groups in Et2O, the walls of the 3D framework havethe voids. In contrast, the water containing 3D system 1a has
no such voids and thus the wall is densely packed with thelateral S⋯S interactions between [Au(catdt)2]− molecules.
This is probably because the solvent water molecules are
involved in the wall structure, which should eliminate theabove mentioned steric hindrance effect from the solvent
molecules. Here, the water molecule has both protondonating and -accepting abilities, in contrast to Et2O andTHF having only proton-accepting ability. In addition, thesize of water molecule is much smaller than that of theothers. These features should allow the water molecules
to exist between the catechol moieties of [Au(catdt)2]−
molecules and participate in the densely packed wall structure of the 3D framework. Therefore, we have successfully
illustrated the role and effect of the crystal solvent moleculeson the construction of these new 3D anionic molecular
frameworks based on [Au(catdt)2]− in terms of the molecularsize and shape and H-bonding abilities. As for the next step,by taking advantage of this new type of metal dithiolene
complex with H-bonding abilities, we are currently investigating cooperative properties and functionalities of H-bonddynamics (e.g. dielectric properties and proton conductivity)and π−/d-electrons (e.g. electronic conductivity and magnetic
properties).
Reference[1] S. Yokomori, A. Ueda, T. Higashino, R. Kumai, Y. Murakami, and
H. Mori, CrystEngCommun, 21, 2940 (2019).
Authors
S. Yokomori, A. Ueda, T. Higashino, R. Kumaia, Y. Murakamia, and
H. MoriaCondensed Matter Research Center (CMRC) and Photon Factory,
Institute of Materials Structure Science, High Energy Accelerator
Research Organization (KEK)

Fig. 1. Concept of the quantum size effect under magnetic fields. The
Landau subbands in the bulk (red curves) are quantized into discretelevels (blue circles) due to the size effect in thin films. (a) In the low
field region, several SdH oscillations with different frequencies appear
in thin films, instead of the oscillation of the extremal orbit in the bulk.
(b) At the high-field quantum limit, the field-induced density wave
transition due to the 2kF instability of the lowest subband is suppressedby the discretization of the subband.

it has never been confirmed yet. In order to identify thehigh field phase, we performed transport measurements ofthin-film graphite samples under the magnetic field up to
40 T, which was generated by a home-made miniature pulse
magnet system. The thin-film flake was prepared on a silicon
substrate by the mechanical exfoliation technique, and thedevice structure was fabricated using the electron beamlithography (Fig. 2(b)). As seen in Fig. 2(a), the magnetoresistance shows a saturation around 10 T, above which there
exist only a few occupied Landau subbands (quasi-quantum
limit). The field-induced phase transition appears above
30 T as indicated by an arrow. On the phase diagram, thephase boundaries in thin films shift to higher fields, accompanied by a reduction in temperature dependence. These
results are consistently explained by the density wave modelwith the quantum size effect, because the 2kF instability of
the Landau subband is weakened by the discretization of
the subband in thin films (Fig. 1(b)). The present finding
strongly suggests the density wave state standing along theinterlayer direction [1].

Quantum Size Effects Associated with
Ultra-Thinning of Layered Semimetals
Osada GroupWe have investigated thickness dependence of theelectronic properties of two layered semimetals, graphite
and WTe2, under magnetic fields. Their monolayer limits
are known as a 2D Dirac fermion system (graphene) and a
2D quantum spin Hall insulator, respectively. Therefore, it
is significant to see how their electronic properties changes
associated with thinning them.
Generally, under the normal magnetic field, the band
structure of the layered conductor is quantized to a set ofLandau subbands with interlayer dispersion. Here, as the
sample thickness approaches the de Broglie wavelength,
the interlayer electron wave number is quantized, so that thebulk Landau subbands separates to discrete levels as shownin Fig. 1. This causes various size effects on electronic
properties.
Bulk graphite shows a unique field-induced electronic
phase transition above 30 T. Although the density wave
formation due to the 2kF instability of the Landau subband
was proposed as a possible mechanism of the transition,

4

ISSP Activity Report 2018

Fig. 2. Quantum size effect on the field-induced electronic phase transition in graphite. (a) Transverse magnetoresistance of a graphite thinfilm with the thickness of 80 nm. The arrow indicates the field-induced
transition. (b) Microscope image of a Kish graphite thin film device. (c)Phase diagram of the field-induced transition in graphite thin films.

The bulk crystal of a layered transition metal dichalcogenide compound, 1T'-WTe2, is known as a 3D type-II
Weyl semimetal. In order to see the change of topologicalstates, we carried out the magnetotransport measurement ofWTe2 thin films with reducing their thickness. Since WTe2
is degraded in the atmosphere, the mechanical exfoliation process was performed in the grove box. The clear
Shubnikov-de Haas (SdH) oscillations are observed on
positive magnetoresistance. The FFT spectrum of the SdH
oscillations has mainly four peaks, which correspond to theextremal orbits surrounding four Fermi surfaces of the bulk.
Their peak frequencies start to decrease with a film thickness of about 50 nm or less. Moreover, as the film thickness
decreases, many weak subpeaks appear on the low frequency
side of each main peak below about 30 nm. According to the
picture of the quantum size effect (Fig. 1(a)), the observed
subsidiary SdH oscillations with different frequencies originate from the 2D subbands, to which the bulk band with a
Fermi surface is quantized.
Reference[1] T. Taen, K. Uchida, and T. Osada, Phys. Rev. B 97, 115122 (2018).
Authors
T. Osada, T. Taen, H. Adachi, T. Uchida, and K. Uchida

Spin Thermal Hall Conductivity
in a Kagomé Antiferromagnet
Yamashita and Kawashima Groups
Searching for the ground state of a kagomé Heisenberg
antiferromagnet (KHA) has been one of the central issues ofcondensed-matter physics, because the KHA is expected tohost spin-liquid phases with exotic elementary excitations.
To study the elementary excitations, we investigate
the longitudinal (κxx) and transverse (κxy) thermal conduc-Fig. 1. (a, b) Crystal structure of Ca kapellasite viewed along the c axis(a) and the a axis (b). The direction of the Dzyaloshinskii-Moriya interaction (D) is shown by the ⊙ symbols. J1, J2, and Jd (solid red lines)
represent the nearest-neighbor, next nearest-neighbor, and diagonal
magnetic interactions, respectively [2]. (c) An illustration of our experimental setup. Three thermometers (THigh, TL1, TL2 ) and a heater wereattached to the sample. A heat current Q || x was applied within the abplane and a magnetic field was applied along the c || z axis. (d, e) The
field dependence of the transverse temperature difference ΔTy ≡ TL1 −
TL2 (d) and κxy (e). Solid lines in (e) represent linear fits.

Fig. 2. (a) The temperature dependence of the thermal Hall conductivity divided by the temperature and the magnetic field (κxy / TB) of
Ca-kapellasite [1] and volborthite [4]. (b) Normalized thermal Hall∼
conductivity of these two compounds (fexp, symbols) and that of∼
Schwinger-boson mean field theory (f SBMF, solid line) show a remarkable agreement by tuning J and D as fitting parameters. The valuesof parameters (J/kB, D/J) used for the fittings are (66, 0.12) and (60,-0.07) for Ca kapellasite and volborthite, respectively.

tivities of a new candidate of S = 1/2 KHA Ca kapellasite(CaCu3(OH)6Cl2∙0.6H2O) [1]. The magnetic Cu2+ ionsin Ca kapellasite form an ideal kagomé structure (Fig. 1(a) and (b)). The fitting of the temperature dependenceof the magnetic susceptibility shows that the spin Hamiltonian in Ca kapellasite is well approximated as an ideal
KHA with the effective spin interaction energy J/kB ~ 66 K
[1, 2]. Although the ground state is not a quantum spin
liquid, the magnetic transition temperature T*~ 7 K is much
lower than J/kB, providing a wide temperature range ofthe spin liquid phase T* < T < J/kB to study the elementary
excitations.
Figure 1 (d) shows the field dependence of the transverse
temperature difference ΔTy ≡ TL1 − TL2 (see Fig. 1 (c) for theexperimental configuration). Remarkably, asymmetric fielddependence is clearly observed, demonstrating a thermal
Hall signal in this transparent insulator. By asymmetrizing
ΔTy with respect to the field direction, we obtain the fielddependence of κxy (Fig. 1 (e)) which is found to be linear to
the field in the spin liquid phase.
The temperature dependence of κxy /T shows an increase
as lowering temperature below J/kB, which is followed bya peak at T ~ J/3kB (Fig. 2 (a)). Quite unexpectedly, thetemperature dependence and the magnitude of κxy of Ca
kapellasite is similar to that of another kagomé antiferromagnet volborthite [4], whereas the κxx in Ca kapellasite isabout one order of magnitude smaller than that of volborthite. Given that κxx is dominated by phonons in this temperature range, similar |κxy| in these kagomé compounds rules
out phonons as the origin of κxy.
We find that κxy is well reproduced, both qualitatively
and quantitatively, by spin excitations described by the
Schwinger-boson mean-field theory [3] with the Dzyaloshin-

ISSP Activity Report 20185

skii-Moriya interaction of D. Most remarkably, both κxy of
Ca kapellasite and that of volborthite are found to converge
to one single curve of our Schwinger-boson calculation only
by choosing J and D as fitting parameters (Fig. 2 (b)). This
excellent agreement demonstrates not only that the thermal
Hall effect in these kagomé antiferromagnets is caused by
spins in the spin liquid phase, but also that the elementary
excitations of this spin liquid phase are well described by
the bosonic spinons. Although whether our ansatz is the
only successful state for describing κxy or other spin liquidstates – in particular spin liquids with fermionic spinons
having a different κxy – remains an open question, our results
suggest that thermal Hall conductivity of a kagomé antiferromagnet has a common temperature dependence described by
Schwinger bosons.
References[1] H. Doki, M. Akazawa, H.-Y. Lee, J. H. Han, K. Sugii, M. Shimozawa, N. Kawashima, M. Oda, H. Yoshida, and M. Yamashita, Phys.
Rev. Lett. 121, 097203 (2018).
[2] H. Yoshida et al., J. Phys. Soc. Jpn. 86, 033704 (2017).
[3] H. Lee, J. H. Han, and P. A. Lee, Phys. Rev. B 91, 125413 (2015).
[4] D. Watanabe et al., Proc. Natl. Acad. Sci. USA 113, 8653 (2016).
Authors
M. Yamashita and N. Kawashima

Floquet-Theoretical Formulation
and Analysis of High-Harmonic
Generation in Solids
Tsunetsugu Group
High-harmonic generation (HHG) is a nonlinear opticalphenomenon, and monochromatic input light irradiates atarget medium to be converted to output with multiple highFig. 2. High-harmonic spectrum of electric current shown inlogarithmic scale. The cutoff order Nmax represented by the arrow is
proportional to F / Ω ∝E / Ω2.

harmonics, which is an indispensable technology for thestate-of-the-art ultrafast physical measurements. Whileatomic gases were traditionally used target media, recent
experiments have achieved the high-harmonic generation inbulk solids [1]. However, it remains an open problem how
the interaction of light with electrons in solids results in theconversion to higher frequencies.
In this study [2], we invoke the mathematical tool known
as Floquet’s theorem to analyze the electron dynamics driven
by light with single frequency Ω, which induces HHG in
output light. We have tailored this theoretical framework
for a simple lattice electron model in one dimension. Thismodel is a tight-binding Hamiltonian with two bands which
are controlled by site-alternating potentials, and electrons
acquire a time-oscillating phase in their hopping amplitude
due to their coupling to input light. We have obtained ananalytical solution for the time evolution of electron wave
function in the limit of no potential scattering, and proceed toanalyze the effects of the potential scattering by a perturbation approach. While the highest frequency of HHG in the
no-scattering limit is too low to explain the related experimental data, we have found that it becomes large enough as
the scattering amplitude increases.
Our result [2] also predicts that the highest order in HHG
is inversely proportional to the square of the input frequency,
Nmax ∝ Ω –2, in contrast to the conventional scaling ∝Ω–1 in atomic gases. This anomalous behavior deserves
experimental confirmation. Besides, our Floquet-theoretical
approach is general and thus applicable to various latticesystems. Therefore, for realizing effective HHG, it is usefulto employ this approach and examine the effects of important characteristics of the model, such as dimensionality andsymmetry of solids.
References[1] S. Ghimire et al., Nat. Phys. 7, 138 (2011).
[2] T. N. Ikeda, K. Chinzei, and H. Tsunetsugu, Phys. Rev. A 98,
063426 (2018).
Authors
T. N. Ikeda and H. Tsunetsugu

Fig. 1. Energy dispersion of Floquet bands in two cases with different
electron-light coupling F ∝ Ω-1E (electric field amplitude of input
light): (upper) no coupling and (lower) non-zero coupling. Dimensionless frequency of input light is Ω = 0.25. The non-zero coupling
F avoids crossings of replicas of the two original energy bands (solidlines in the upper panel).

6

ISSP Activity Report 2018

Heat Transport via a Two-State System
Kato Group
Heat transport in macroscopic systems has been studied
for long time. Recent technological progress has enabled
us to measure heat transport carried by photons or phonons
via a nanoscale object, for which quantum properties ofthe system are revealed [1]. Based on this development, westudied heat transport in the spin-boson model, in which a
two-state system is coupled to two thermal reservoirs (seeFig. 1 (a)) [2]. Even though this spin-boson model is simple,
it is known that there appear various physical phenomena
such as the Kondo effect [3,4].
The properties of the thermal reservoirs are characterized by a spectral density function, I(ω) ∝ ωs. In Ref. [2],we studied thermal conductance for heat transport via
a two-state system for arbitrary exponent , comparing
analytic approximations with numerical results based on
the continuous-time quantum Monte Carlo method. Bysystematic comparison, we revealed that heat transport via a
two-state system is described by one of three processes, i.e.,(i) sequential tunneling, (ii) co-tunneling, and (iii) incoherent
tunneling (see Fig. 1 (b)-(d)). We derived an asymptoticallyexact expression for the sufficiently low-temperature region(the co-tunneling regime). This formula predicts power-law
temperature dependence at low temperatures. We also foundthat for the high-temperature or strong-coupling regions(the incoherent tunneling regime), the thermal conductanceis well explained by the noninteracting-blip approximation(NIBA).
As an example, we show the temperature dependenceof the thermal conductance for the ohmic reservoir (s = 1)and α = 0.1 (α is a dimensionless system-reservoir coupling
constant) in Fig. 2. At low temperatures, the numerical result(the legends) agrees well with the asymptotically exact
formula for the cotunneling process (the blue dashed line).
In this regime, the thermal conductance is always proportional to T 3(= T 2s+1), which is consistent with the result ofRef. [4]. At moderate temperatures and high temperatures,
the numerical result deviates from the cotunneling formula,and instead agrees well with the NIBA (the black solid line).
We note that the thermal conductance obtained by the NIBA
is proportional to T 3-α at low temperatures as indicated in
the figure, and deviates from the low-temperature numericalresults. We also show the approximate formula for thesequential tunneling (the green dot-dashed line), and theFig. 1. (a) A schematic of the system considered in the present study.
Heat transport is governed by one of three processes; (b) sequential tunneling process, (c) co-tunneling process, and (d) incoherent
tunneling process.

Fig. 2. Temperature dependence of the thermal conductance for theohmic case (s = 1).

Markov approximation for the incoherent tunneling (theorange dotted line). The former agrees with numerical data
at moderate temperatures, while the latter clearly deviatesfrom the numerical results, indicating the importance of the
non-Markov properties of the system.
Our study will provide a useful basis for deep understanding of heat transport via nanoscale devices, and as wella platform for experiments attempting to access many-bodyeffect in heat transport of mesoscopic devices.
References[1] A. Ronzani et al., Nat. Phys. 14, 991 (2018).
[2] T. Yamamoto, M. Kato, T. Kato, and K. Saito, New J. Phys. 20,
093014 (2018).
[3] A. J. Leggett et al., Rev. Mod. Phys. 59, 1 (1987).
[4] K. Saito and T. Kato, Phys. Rev. Lett. 111, 214301 (2013).
Authors
T. Yamamoto and T. Kato

Realization of a Current-Controlled
Superconducting Device
Katsumoto Group
Ultra-high speed, low-power consumption logic device
action has been predicted for Josephson superconducting
junctions, which dream, however, has not come true yet for
more than three decades. The device action itself had been
confirmed at the beginning of the 1980s [1]. Nevertheless,Fig. 1. Scanning electron micrograph of the sample. The yellow arrow
indicates the supercurrent while two red arrows indicated the transverse(no.1) and the parallel (no.2) normal currents, respectively.

ISSP Activity Report 20187

the two-terminal nature of the junction has blocked theapplication to the real world of logic devices. The obstacle isexplained as follows. The switching to normal state occurs
when the junction is “fired” by applying a bias current larger
than the critical current Jc (Jc1). Then to switch the next
junction a current larger than its Jc (Jc2) is required while
the current swing of the first junction is Jc1. Hence for thecircuit action, condition Jc1 > Jc2 should be fulfilled. The
condition means that Jc decreases monotonically over the
chain of logic gates, thus sharply limits the scalability of
the circuit. The finding of a gate-controllable supercurrent
through the two-dimensional electrons (2DE) on the surfacesof InAs [2], this was thought to solve the problem. However,as a voltage-driven device, the Josephson junctions have
too high off-conductance, and the obstacle was realized toexist stubbornly. Therefore a current-current three(or four)terminal device is required for the practical use.
We here report pure current-control of supercurrent,
which would solve the long-standing technical problem. We
prepared a 2DE in an InAs quantum well grown on an InP
substrate. Figure 1 shows the sample structure, in the centerof which a Nb-InAs 2DE-Nb superconducting junction
is formed. Besides, the sample has six normal terminals,
through which local or non-local electric currents can flow.
InAs 2DE is known to have a strong Rashba-type spin-orbit
interaction (RSOI), and the layered structure is design tomaximize the RSOI.
One of the expected device actions is described asfollows. When a supercurrent is flowing between the two
Nb electrodes, a normal current is applied transverse to thesupercurrent. The normal current is associated with the spin
Hall effect, which causes spin accumulation at the supernormal interfaces and breaks the time-reversal symmetry
locally. The normal current can thus reduce the criticalcurrent of the superconducting junction. The other is akind of "remote reduction," in which the normal current isapplied parallel to the supercurrent but at a different part of
(a)

(b)

Fig. 2. (a) Color plot of the junction resistance versus the plane oftransverse current and junction current. The black region corresponds tothe zero-resistance state. (b) The same for the parallel current.

8

ISSP Activity Report 2018the sample (red arrow no.2). In this case, the normal current
causes the spin current, which should have a significant
disorder in electron spins through the Zitterbewegung [3] andcrosses the supercurrent. The disordered spin current again
should lead to the reduction of the critical current.
In the experiments, the care was taken to avoid heating by
the normal currents and the application of voltages due to theimbalance of the potentials at the normal electrodes. Figure2(a) is a color plot of the resistance of the superconducting
junction against the junction current and the control current.
The black region corresponds to the zero-resistance state, andan apparent reduction of the critical current is observed. The
current gain (the derivative of the edge line on the zero-resistance region) is larger than unity (0 dB) below 100 nA of thetransverse current. The result of the remote-reduction experiment is shown in Fig. 2(b). The remote current also reduces
the critical current through the sensitivity is lower, and theregion for positive current gain (above 0 dB) is limited to justaround the zero parallel currents.
In conclusion, we have realized a current-controlled four
terminal superconducting device with finite current gains.
References[1] T. R. Gheewala, IEEE Trans. Electron Devices 27, 1857 (1980).
[2] H. Takayanagi and T. Kawakami, Phys. Rev. Lett. 54, 2449 (1985).
[3] Y. Iwasaki, Y. Hashimoto, T. Nakamura, and S. Katsumoto, Sci.
Rep. 7, 7909 (2017).
Authors
T. Nakamura, Y. Hashimoto and S. Katsumoto

Magneto-Thermodynamic Properties
in Submicron Wires of Pd-doped FeRh
Otani GroupAn FeRh alloy with B2 order shows a first-order phasetransition from antiferromagnetic (AFM) to ferromagnetic(FM) phases with raising temperature. As the transition
temperature is tunable around room temperature, this is acandidate material for several applications such as heatassisted magnetic recording, AFM memories and memristor
devices. Recently, an asymmetric behavior around the
AFM-FM phase transition has been reported on sometiny sample structures. Remarkably, a discontinuous andasymmetric resistance change around the phase transition
was reported in submicron wires of FeRh, which is causedby suppression of the nucleation of AFM domains during
the cooling process [1]. In this work, we performed resistivity measurements of submicron wires of Pd-doped FeRh
as a function of temperature and external magnetic field.
We further evaluated some thermal properties such as anenergy loss around the temperature hysteresis in each wire tocharacterize those finite-size effect.
We used Pd-doped FeRh alloy in order to decrease the
AFM-FM phase transition temperature. A 60-nm-thickepitaxial film of Pd-doped FeRh was prepared and fabricatedinto submicron wires. Detailed processes for film growthand patterning are shown in Ref. 2. As the resistivity in AFM
phase is larger than that in FM phase, the electrical transportmeasurement can be a probe to detect the AFM-FM phasetransition which is induced by sweeping temperature or
external magnetic field. The resistance on 270-nm-wide wireagainst temperature and magnetic field is plotted in Fig. 1(a).
We can see the temperature-driven and field-driven hysteresis

Fig. 1. Hysteresis loops due to AFM-FM transition on submicron
wires of Pd-doped FeRh [2]. (a) Resistance measurements on 270-nmwide wire of Pd-doped FeRh against temperature (black) and in-planemagnetic field (blue). The temperature-driven hysteresis loop was
measured without applying a magnetic field and the field-driven one
was done at a constant temperature of 240.0 K. Inset is a SEM image of
the wire. (b) Volume fraction of ferromagnetic phase against temperature which were estimated from resistance of the submicron wires.

loops due to the AFM-FM phase transition. Though the resistance contains small jumps under the transition to FM phase,it showed a large discontinuous change on the opposite arm,
the transition to AFM phase. These asymmetries and steplike structures in both hysteresis loops would indicate thenucleation processes of AFM and FM domains are confinedby the sample size, which is also reported in Ref. 1. We
further investigated how the hysteric behavior changes by thesize of wires. We prepared 270nm-, 660-nm- and 1160-nmwide wires by the same method and measured their resistances with sweeping temperature. Under an assumptionthat all magnetic domains are aligned along the longitudinal
direction of the wire, the volume fraction of FM domains
can be calculated from the measured resistance in each wireas shown in Fig. 1(b). We can find the enhanced asymmetry
in narrow wires. To evaluate this finite-size effect in wires,
we estimated the energy loss around the phase transition
from simple thermodynamic equations. We found the energy
losses around the hysteresis loops are larger in narrower
wires. Also, all wires showed larger losses than the unpatterned film. These results would suggest that the finite-size
effect, probably a restriction in magnetic domain structures
across the phase transition, appears in a macroscopic energy
loss. This method can be a probe to characterize the rectified
domain nucleation process in tiny volume samples by simple
electrical measurements.

Fig. 1. (a) Fe L2,3 remanent XAS (upper) and XMCD (middle) of a7-ML Fe film on Cu(001), and XMCD (lower) of a 5-ML Mn/7-ML Fe
film in the normal incidence (NI) and grazing incidence (GI) geometries. Here, external magnetic field is parallel to the incident x-ray. (b)Iron magnetization curves in the heterostructures of Mn (x ML, x =0, 1, 2, 3, and 5 ) overlayers on the 7-ML Fe film measured in the NI(left) and GI (right) geometries. The L3 XAS peak intensity normalized
by the L2 one is plotted as a function of the magnetic field. In the GI
geometry, the magnetic field is applied along the [100] direction of theCu(001) substrate.

heterostructures has not yet been elucidated well in relation
to the macroscopic magnetic properties. We use scanningtunneling microscopy (STM) and x-ray absorption spectroscopy/x-ray magnetic circular dichroism (XAS/XMCD) as
complementary tools for clarifying the correlation between
the atomic structure at the interface and the magnetism.
Successive atomically-resolved STM characterizations of
not only structural but also electronic and magnetic properties during the growth of magnetic thin film heterostructures
provide crucial information on the atomic-scale interfacial
factors in the dynamical process of the interface formation.
The element-specific, quantitative and macroscopic observations of electronic and magnetic properties by XAS/XMCD
can be linked with the microscopic interface characteristics.
We have studied fcc Fe thin films grown on Cu(001)with Mn overlayers (Mn/Fe films) as a unique system forinvestigating the interface interaction. [1] The electronic

References[1] V. Uhlír et al., Nature Commun. 7, 013113 (2016).
[2] K. Matsumoto et al., IEEE Trans. Magn. 54, 2300904 (2018).
Authors
Y. Otani and K. Matsumoto

Dynamic Interface Formation in
Magnetic Thin Film Heterostructures
Komori GroupIn magnetic thin film heterostructures, interaction at theinterface plays a dominant role in the development of novel
electronic and magnetic properties. The interlayer couplingstrength primarily relies on the interfacial structure at theatomic scale, including atomic roughness, steps, and intermixing. However, the impact of the atomic scale interfacial
structure on the magnetic coupling in magnetic thin film

Fig. 2. (a-c) STM images of 7-ML Fe films with 1.0-ML (a), 1.5-ML(b), 1.8-ML (c) Mn overlayers. (d-g) High-resolution surface STM
images of 1.0-ML (d), 1.5-ML (e), 1.8-ML films (first (level-1) (f) andsecond (level-2) (g) levels,). The disorder alloy can be seen in each
image as bright protrusions. (h) Statistical plots of the fraction of theordered alloy region with the (4 × 2) and (4 × 4) reconstructions inlevel-1 and level-2 as a function of the average thickness of the Mn
overlayer. The dashed lines are linear extrapolations of the fractions of
the ordered alloy.

ISSP Activity Report 20189

and magnetic properties of ferromagnetically-coupled top
two layers in the fcc Fe thin film on Cu (001) [2] is susceptible to the structural changes on the atomic scale. At theinterface, a collinear and homogeneous antiferromagnetic/
ferromagnetic coupling is expected at the Mn/Fe interface
as observed in the reference system of Mn thin films on
the bulk bcc Fe(001) substrate. Thus, the fcc Fe thin film
highlights the role of atomic-scale interfacial factors with theMn overlayers.
The films were fabricated by successive deposition of Fe
and Mn on Cu(001) at room temperature (RT) in an ultrahighvacuum. The thickness of the fcc Fe layer was fixed to ~ 7monolayer (ML). The Fe layer in the Mn/Fe film exhibitsa two-step spin reorientation transition (SRT) from out-ofplane to in-plane direction with increasing the thickness of
the Mn overlayer as observed by XAS/XMCD measurements
shown in Fig. 1. After 1 ML deposition of Mn, the coercive
field in the magnetic field perpendicular to the film decreases
to a value less than that in the in-plain magnetic field.
Furthermore, the in-plane anisotropy gradually increases up
to 3-ML Mn deposition. Corresponding atomically-resolved
STM observations reveal the dynamic structure change froma disordered surface to an ordered one by the Mn deposition
at RT as in Fig. 2. First, a disordered surface alloy with the
Fe film is formed by the Mn deposition, which induces thefirst SRT. The ordered-alloy area of the surface gradually
increases with increasing the amount of the deposited Mn
atoms more than 1 ML on average. The ordering of the alloy
completes around 3-ML Mn deposition, which corresponds
to the completion of the second SRT.
The present complementary approach by XAS/XMCD
and STM successfully disentangles the hidden functionalityof the interface alloying, which changes and enhances themagnetic anisotropy in the Fe layer. The results will pave
new ways to understand novel phenomena emerging at theinterface on the atomic scale, and to improve the electronic
and magnetic properties of the magnetic thin film heterostructure.
References[1] S. Nakashima et al., Adv. Func. Matter. 29, 1804594 (2019).
[2] H. L. Meyerheim et al., Phys. Rev. Lett. 103, 267202 (2009).
Authors
S. Nakashima, T. Miyamachi, Y. Tatetsua, Y. Takahashi, Y. Takagib,
Y. Gohdaa, T. Yokoyamab, F. Komori
aTokyo Institute of Technology
bInstitute for Molecular Science

Nanoscale Potential Mapping:Direct Visualization of Electrical
Resistance at Single Surface Stepsand electronic states can be well characterized by standard
surface science techniques including scanning tunnelingmicroscopy (STM). Recent discovery of superconductivity insurface 2DES attracted further attentions.
Net and local misorientations of the substrate from anominal plane results in the formation of steps on it. Superstructure due to the surface reconstruction inherently forms
boundaries that separate domains whose periodical phases
are different from each other. Both of the one-dimensionalline defects disrupt the periodicity of the surface atomic
arrangement and therefore work as a barrier for the electrons
across them. In order to investigate the role of the line
defects in electrical transport, we measured the nanometerscale spatial distribution of local electrochemical potentialof an archetypical metallic surface states; the 7×7 structureof Si(111) substrates, using an STM-based technique calledscanning tunneling potentiometry (STP) [1]. Using STP, wefound potential drops clearly at step edges and phase boundaries of the 2D metallic surface, demonstrating the presenceof significant electrical resistance there.
Figure 1 shows STM and electrochemical potential
images taken simultaneously on the 7×7 surface under the
net current flow from the left to the right. A single-height(0.31 nm) steps are observed running from the upper left tothe lower right in the topographic image (Fig. 1(a)). In thecorresponding potential image (Fig. 1(b)), potential drops
are found at the step edges, as more quantitatively presented
in the inset cross-sectional plots, which was taken along thedashed A-B line in Fig. 1(a).
The steps are, however, not the only defects that disrupts
the electron transport on the surface. In the potential
mapping, which exhibits a ladder-like pattern, one notices
several potential drops in narrow terraces separated by thesteps. The potential drop due to the rungs of the ladders ismore clearly displayed in a cross-sectional profile shown in
the inset. The rungs correspond to boundaries that separate
domains of the 7×7 reconstructed structures whose phases
do not match. The potential images indicate that the phaseboundaries also have electrical resistance.
From the obtained potential images and their crosssectional plots, we can quantitatively analyze the conductivity through an individual step and phase boundary. Since
the absolute value of the current density is unknown, we
cannot measure the terrace, step, or phase boundary conductivity directly. But, their ratio can be estimated precisely.
Since in our measurement we used low-doped substrates,
the electrical conductance through the substrate is quite
small. The poorly conductive substrate safely eliminates the
problem of the bulk contributions in our measurements.
We estimated the conductivity ratio of the step to the

Hasegawa Group
Atomically-thin two dimensional electron systems(2DES) have been one of the hot topics because of theirunique properties originating from the low dimensionality
and reduced symmetry. Among them 2DES by metallic
surface states, which are formed by a few monolayer(ML) deposition of metallic elements on semiconducting
substrates, have a unique status. Because of the thermal
stability through the surface reconstruction, self-organizedhigh-quality periodical structures can be formed in macroscopic dimensions. Basic properties such as atomic structure

10

ISSP Activity Report 2018

Fig. 1. STM (a) and electrochemical potential (b) images taken
simultaneously on the Si(111)7×7 surface. (inset) cross-sectional plotsof topographic height and potential taken along the dashed line drawnin (a).

terrace σs/σt is 3.1±1 /μm. The ratio means that the resistance of a single step corresponds to that the 340 nm-width
terrace of the 7×7 structure. This also implies that the contribution of the steps to the net resistance dominates when thetilting angle of the surface exceeds 0.06°, which is muchsmaller than the tolerance of the miscut angle (~0.16°) for
commercial wafers. The macroscopic net resistance throughthe 7×7 surface states, which include both those of terraces
and steps, is therefore basically determined by the stepdensity and the misoriented angle of the substrate.
The phase boundary is found more conductive than thestep: the conductivity ratio of a single phase boundary toterrace σph/σt is 16.4 ± 10 /μm. The density and distributionof phase domains of the 7×7 structure are closely relatedwith nucleation process of the 7×7 structure from disordered
1x1 during the cooling of the sample after the annealing to
get rid of the surface oxide layer and to form the clean 7x7
structure. The macroscopic surface conductivity, therefore,
also depends on the sample preparation method; e.g. how thesample was slowly cooled after the annealing.
In fact, the electrical conductivity of the surface has beencharacterized in various methods including microscopic
4-probe methods, but the measured conductivity have been
widely dispersed. Our results indicate that the macroscopic
net conductivity are mostly determined by the density ofsteps and domain boundary, thus depending strongly on themisorientation of the sample and its preparation. The present
study also demonstrates the importance of characterizing
microscopic conductance to elucidate the intrinsic transport
properties of the system.
References[1] M. Hamada and Y. Hasegawa, Jpn. J. Appl. Phys. 51 125202(2012).
[2] M. Hamada and Y. Hasegawa, Phys. Rev. B 99, 125402 1 (2019).
Authors
M. Hamada and Y. Hasegawa

Strain Relaxation at
Doped Epitaxial Interfaces
Lippmaa GroupA quasi-two-dimensional quantum well is known to form
by electron accumulation at an epitaxial heterointerface
between SrTiO3 and LaAlO3. The accumulation of carriers
at this interface is the result of a peculiar interplay between
several effects, including the polar discontinuity between
SrTiO3 and LaAlO3, tetragonal distortion of the interface
layer due to the 3% epitaxial strain at the interface, field- andstrain-dependent giant dielectric permittivity of SrTiO3, andpossibly due to Sr and La intermixing within the first unit
cell of the interface. Although the carrier number is essentially fixed by the structure, it is possible to tune the depth
distribution of the accumulated carriers by either top- or
bottom-side gating, thereby changing the occupancy of thenearly degenerate dxy, dxz, and dyz orbitals. Due to the tetragonal distortion of the interface layer, the orbital degeneracy ispartially lifted, lowering the energy of the dxy orbital. Gating
can then be used to shift the Fermi level below or above
the level crossing, leaving the dxz/yz orbitals either empty
or partly filled. One unique feature of this interface is the
sharply asymmetric potential profile of the quantum well dueto the wide bandgap of LaAlO3. This asymmetry leads to a

Fig. 1. Crystal FFP orientations. (a) Schematic of sample orientationand the FFP directions in the (010) plane when the emitter is a B-site
atom (Al or Ti). (b) XPD polar curves for Ir-doped samples comparing
Al 1s and Ti 2p emission signals for different Ir doping levels.

relatively strong Rashba-type spin-orbit coupling at the interface and this coupling strength can be tuned to some extent
by gating, either because the asymmetry of the potential wellis changed or due to a Lifshitz transition that occurs when
the Fermi level is tuned across the dxy – dxz,yz crossing.
Since this level crossing energy is determined by thetetragonal distortion of the interface layer, we have turned
our attention to the possibility of tuning the interfacial strain
by doping the interface. Additionally, by adding heavy
elements, such as Ir to the interface, it may be possible tocontrol the spin-orbit coupling experienced by the electrons
in the quantum well.
SrTiO3/LaAlO3 heterostructures with interfaces doped
either with Ir or Co were grown by pulsed laser deposition
and the interfacial strain relaxation was studied by hard
(7940 eV) x-ray photoelectron diffraction (XPD) at SPring-8
BL47XU. It was thus possible to estimate the strain stateat the interface by comparing XPD forward focusing peak(FFP) positions between La and Sr (perovskite A-site) or
Al and Ti (perovskite B-site) (Fig. 1) for different interface doping levels. A shift of the La and Al FFPs towards
larger angles relative to Sr and Ti showed that in all cases
the LaAlO3 cap layer is under compressive strain in theout-of-plane direction due to epitaxial strain. However, thelevel of strain depends on interface doping, especially for
Ir. One possible cause is the interdiffusion of Ir across the
SrTiO3/LaAlO3 interface. The work suggests that the interfacial strain can be tuned by doping the first unit cell layerof LaAlO3 at the interface with a larger ionic radius cation
to reduce the epitaxial strain imposed on the first few unit
cells of SrTiO3. This technique may be effective for controlling the critical carrier density where the Lifshitz transition
occurs and thus selecting the gate bias range where the spinorbit coupling in the quantum well is tunable by gating.
Reference[1] M. Lee, X. L. Tan, M. Yoneda, T. Okamoto, I. Tanaka, Y. Higa,
D. Peng, M. Ogi, S. Kobayashi, M. Taguchi, M. Lippmaa, M.-J.
Casanove, and H. Daimon, J. Phys. Soc. Jpn. 87, 084601 (2018).
Authors
M. Leea, X. L. Tana, M. Yonedaa, T. Okamotoa, I. Tanakaa, Y. Higaa,
D. Penga, M. Ogia, S. Kobayashia, M. Taguchia, M. Lippmaa, M.-J.
Casanoveb, and H. Daimona, J. Phys. Soc. Jpn. 87 (2018) 084601
aNara Institute of Science and Technology
bUniversity of Toulouse

ISSP Activity Report 201811

CO2 Activation and Reaction on
Zn-Deposited Cu Surfaces Studied
by Ambient-Pressure X-Ray
Photoelectron Spectroscopy
Yoshinobu and I. Matsuda Groups
It is important to understand the mechanisms of activation and hydrogenation of carbon dioxide (CO2) in order toutilize the abundant CO2 effectively as a chemical feedstock.
One way of utilizing CO2 is methanol synthesis on Cu-based
catalysts. Metallic copper in the catalysts is considered to be
an active site for methanol synthesis. So far, the adsorption
and reaction of CO2 on Cu surfaces have been widely investigated under ultrahigh vacuum (UHV) and under ambientpressure conditions.
In this study [1], the reaction of CO2 on Zn-Cu(111)and Zn-Cu(997) was systematically studied using ambientpressure X-ray photoelectron spectroscopy (AP-XPS) at
SPring-8 BL07LSU (2015B7496 and 2016A7401). AP-XPS
allows adsorbate and substrate electronic states to be elucidated under reaction conditions. The aim of this study is toreveal the roles of Zn and water in the CO2 reaction, andelementary steps of methanol synthesis by a series of systematic experiments performed under well-defined conditionsat temperature between 299-473 K. We used Zn-deposited
Cu(111) and Cu(997) single crystals as model catalytic
systems. Stepped Cu surfaces are more reactive for dissociation of CO2 compared to flat Cu surfaces. Recently, we haveinvestigated adsorption states of CO2 on Cu(997) surfaces
under UHV, and near-ambient condition. In this study, we
have focused on hydrogenation of CO2 under near-ambientpressure conditions to clarify the effect of the step sites. The
oxidation state of Zn-deposited Cu surfaces and the stabilityof reaction products depend strongly on the gas composition and sample temperature. The effect of water on the CO2
activation was also examined by a set of control experiments.
In the presence of 0.8 mbar CO2 and 0.4 mbar H2 gases,
hydrogenation products are not observed; only carbonate isformed on Zn-deposited Cu(111) and Cu(997) surfaces (notshown here). We found that the formation rate of carbonate
at 299 K is significantly faster on Zn/Cu(997) than that on
Zn/Cu(111), indicating that step sites are more reactive forCO2 activation than terrace sites. On the other hand, theaddition of water (D2O) in the feed gas leads to hydrogenation of CO2 to formate at sample temperatures around
400 K (Fig. 1). This suggests that hydroxyl produced from
dissociative adsorption of water is a reactant in the CO2hydrogenation observed under the present reaction condi-

Fig. 1. A series of XPS spectra on Zn(0.25 ML)/Cu(997) surface: (a)O 1s and (b) C 1s. The spectra of bare Zn-Cu(997) surface were
measured under UHV. AP-XPS measurements were first performed at
299 K in the presence of 0.8 mbar CO2, 0.4 mbar H2, and 0.05 mbar
D2O, then the sample was heated up to 473 K under this ambientpressure condition.

12

ISSP Activity Report 2018

Fig. 2. Schematic diagram of proposed reactions on the Zn-deposited
Cu surface in the presence of CO2, H2 and H2O.

tions. Figure 2 schematically shows the proposed reactions
on the Zn-deposited Cu surface in the presence of CO2, H2and H2O. We also found that the reaction products such ascarbonate and formate on the Zn/Cu(997) surface are morestable than those on the bare Cu(997) surface. In particular,
formate remains on Zn-deposited Cu surfaces up to 473 K,
which is close to the operation temperature of industrial
Cu-ZnO catalysts. We conclude that an important role of Zn
on Cu surfaces is the stabilization of reaction intermediates
originated from CO2.
Reference[1] T. Koitaya, S. Yamamoto, Y. Shiozawa, Y. Yoshikura, M. Hasegawa,J. Tang, K. Takeuchi, K. Mukai, S. Yoshimoto, I. Matsuda, and J. Yoshinobu, ACS Catal. 9, 4539 (2019).
Authors
T. Koitayaa, S. Yamamoto, I. Matsuda, and J. Yoshinobu
aInstitute for Molecular Science (present address)

Biophysical Study on the Function and
Molecular Mechanism of Rhodopsins
Inoue Group
Rhodopsin is photo-receptive heptahelical transmembrane proteins in which retinal chromophore is covalently
bound to a conserved lysine residue in the seventh helix,
and animal and microbial rhodopsin families are known
so far. Animal rhodopsins present in animal retina transfer
visual signal to brain and are also related to non-visual
light sensing. Microbial rhodopsins show diverse functions:light-driven ion pump, light-gated ion channels, lightregulated enzyme and so on. Both types of rhodopsins arebeing widely used in optogenetics to control various cellular
events, such as neural activity, gene expression and so on,
by light. Recently, we reported third class of rhodopsin,
heliorhodopsin (HeR), which is evolutionally isolated
from both of microbial and animal rhodopsins [1]. The
biochemical study revealed its inverted structure comparedwith other class of rhodopsins, and N- and C-termini of HeR
faces extracellular and cytoplasmic milieus, respectively(Fig. 1). HeRs are diversely distributed from bacteria,
archaea, eukaryotic algae and giant viruses. Although thefunction of HeR has not been clarified yet, we observed
a long photo-reaction cycle up to seconds to minutes bylaser flash photolysis suggesting HeR works as a signaling
protein which transfers light signal to unidentified intracel-References[1] A. Pushkarev, K. Inoue et al., Nature 558, 595 (2018).
[2] K. Inoue, M. d. C. Marín et al., Nat. Commun. 10, 1993 (2019).
AuthorK. Inoue

Emergent SU(4) Symmetry and Quantum
Spin-Orbital Liquid in α-ZrCl3
Oshikawa Group
Fig. 1. Molecular structures of microbial rhodopsin, animal rhodopsin
and heliorhodopsin.

lular proteins. The retinal chromophore in HeR isomerizes
from all-trans to 13-cis form upon light illumination, and wedominantly observed K, M and O-intermediates in the photocycle. While the K and O intermediates show red-shifted
absorption compared with that of the dark state, the absorption of M-intermediate is highly blue-shifted to 400 nm
and a proton is released from retinylidene Schiff-base. A
mutational study suggested that the proton is not transferred
to a specific residue and it is trapped in a hydrogen bonding
network, called proton accepting group (PAG), constituted
from several amino-acid residues including conserved histidines and internal water molecules on the extracellular sideof the protein.
Rhodopsins show wide range of absorption wavelengthand the color regulation of retinal chromophore in rhodopsins to achieve longer-wavelength absorption is one ofcritical elemental technique to develop new types of optogenetics tools which can avoid strong light-scattering by
biological tissues and phototoxicity. We reported that the
mutation of the conserved proline and serine residues insodium pump rhodopsin (KR2) induces 40-nm red-shift of
the absorption without impairing sodium-transport activity[2]. Also, FTIR spectroscopy and quantum mechanicalcalculation revealed that the change in dipole moments ofthese residues lowered energy gap of π-electron of retinal
chromophore by electrostatic interaction. Furthermore,
we identified a new type of sodium pump rhodopsin fromα-proteobacterium, Jannaschia seosinensis, in which theproline residue was naturally altered to glycine and it
shows 20-nm longer absorption than that of KR2. Since J.
seosinensis is derived from solar saltern, the natural mutationof the proline occurred to use longer wavelength light inturbid environment. Since sodium pump rhodopsin can
suppress the neural spiking without alterations of intracellular pH and Cl- concentration, this red-shifted KR2 would
be expected to be applied as a new type of optogenetic tool.

Fig. 2. Construction of light-driven sodium pump rhodopsin absorbing
longer-wavelength light by site-directed amino-acid mutagenesis

As materials are cooled down towards the absolute zerotemperature, generally they become a solid with a long-rangeorder in location of atoms. Likewise, magnetic materials
develop a magnetic long-range order at sufficiently low
temperatures. However, we may expect a “quantum spin
liquid” as a ground state of a magnetic material, if strong
quantum fluctuations destroy the magnetic order even atzero temperature. Theoretical studies have revealed thatquantum spin liquids exhibit various exotic phenomena
such as fractionalization. Its realization has been one of
the central topics in quantum magnetism and condensed
matter physics. After intensive studies over several decades,
several materials have been found to be strong candidates ofquantum spin liquids. However, such candidate materials arestill limited, and it is desirable to find new class of quantum
spin liquid materials.
Quantum magnets often possess the (approximate) spinrotation symmetry. Mathematically it corresponds to thegroup of “rotations” of two-component complex vectors,
SU(2). Here the two components of the vector correspond to
the amplitudes of the spin pointing up and down. It is thennatural to consider an extended symmetry of “rotations” of
N-component complex vectors, SU(N). For a larger N, thesymmetry is larger, and the quantum fluctuations would
be stronger. In fact, there have been numerous theoreticalstudies of SU(N) “spin” systems, many of which are foundto be quantum spin liquids. Experimentally, the SU(N)symmetry has been realized using nuclear spin degrees of
freedom in cold atoms. However, it is still difficult to observe
the SU(N) quantum spin liquid behavior in cold atoms, it isdesirable to realize it in a magnetic material.
In principle, the SU(N) symmetry can appear if there aredegenerate orbitals which can be occupied by electrons. For
example, there are two degenerate orbitals in each atom, anelectron can take 2 orbital states and 2 spin states, namely 4states in each atom. If the system is symmetric with respect
to the “rotation” of these 4 states, it is SU(4) symmetric.

Fig. 1. Crystal structure of α-ZrCl3. Zr3+ ions form a honeycomb
lattice.

ISSP Activity Report 201813

Fig. 2. Hexagonal plaquette of α-ZrCl3. Hoppings between anisotropic
d-orbitals are strongly orbital-dependent, and also depend on the bonddirections indicated by colors (red, blue, and green).

However, since the orbital and spin are completely different
degrees of freedom, there is no particular reason to expect
the SU(4) symmetry. In fact, it has been known that thestandard model of electrons in the presence of two degenerate orbitals, Kugel-Khomskii model, has the SU(4)symmetry only at a special point, which would require a finetuning. Indeed, no material has been known to possess theSU(4) symmetry, even approximately.
In this work [1], we demonstrate theoretically that theSU(4) symmetry emerges in α-ZrCl3 (Fig.1). In the limit ofstrong spin-orbit coupling, the effective model of electrons
in this material has strongly orbital-dependent hoppings (Fig.
2). As a result, the model looks far from SU(4) symmetric.
However, the electron hopping between neighboring Zr ionscan be identified with an SU(4) gauge field on the lattice. We
find that, with an appropriate SU(4) gauge transformationon the lattice, the model is mapped to a manifestly SU(4)symmetric one (Kugel-Khomskii model at the SU(4) point).
This means that α-ZrCl3 has an emergent SU(4) symmetry,
despite the strong spin-orbit coupling which seems to destroy
even the spin SU(2) symmetry. In the strong electron repulsion limit, the effective model is reduced to the SU(4)“antiferromagnetic Heisenberg” model, which has a gaplessspin liquid ground state according to a preceding theoretical
study. Therefore, we expect that α-ZrCl3 realizes an SU(4)symmetric quantum spin liquid. In fact, the SU(4) symmetry
means that the spin and orbital degrees of freedom are intertwined and fluctuating together. In this sense, the groundstate should be better called a quantum spin-orbital liquid.
Reference[1] M. Yamada, M. Oshikawa, and G. Jackeli, Phys. Rev. Lett. 121,
097201 (2018).

correlated materials where electronic correlations play aminor role. Among newly-found topological phases, theWeyl semimetal phase has attracted the most significant
attention because the Weyl fermions exhibit extremely highelectrical and thermal conductivities, which may find use inultrahigh-speed and low-power consumption devices. While
the Weyl semimetal phase was experimentally discoveredin the inversion symmetry broken TaAs system in 2015
[1,2], only a few candidates of the magnetic version havebeen found in systems with broken time reversal symmetry.
Historically, a magnetic Weyl system is the first Weyl
semimetal predicted for condensed matter in 2012 in theseminal paper by Wan et al. [3]. Notably, this prediction was
specifically made for the pyrochlore iridates.
Here, we focus on a pyrochlore iridate Pr2Ir2O7. This
material is known as a Luttinger semimetal where electronic
correlations are strong [4]. According to theoretical predictions, the electronic state can be tuned into a Weyl semimetalstate by perturbations such as lattice strain and external
magnetic field [5,6]. However, experimental proof of theexistence of the Weyl semimetal remains elusive because it
is difficult to apply uniaxial strain on bulk single crystals.
One possible solution to this problem is to use Pr2Ir2O7 thinfilms where lattice strain can be introduced through epitaxy.
To that end, more than 10 groups around the world have beenworking on fabricating Pr2Ir2O7 thin films, but there havebeen no reports of success.
What makes the fabrication of the thin films difficult isthe high volatility of iridium, especially at high temperatures. We therefore turned to solid-state epitaxy, namely,
the deposition of precursors at room temperature by pulsed
laser deposition followed by annealing in air. This synthesis
route mimics bulk crystal growth and allowed us to successfully fabricate high-quality epitaxial thin films of pyrochlore
Pr2Ir2O7 on yttria-stabilized zirconia substrates [7]. Detailed
crystal structure analysis revealed that strained and relaxedgrains coexisted in the films. When Hall measurements
were performed using the Pr2Ir2O7 films, spontaneous Hall
effect was found below 50 K even though the materialshows no spontaneous magnetization nor was an external
magnetic field applied to the film. This temperature of
50 K is very high, considering that bulk single crystals
show spontaneous Hall effect only below 1.5 K [8]. The
spontaneous Hall effect appears due to the all-in-all-out
structure of the iridium 5d moments and the associatedtime reversal symmetry breaking. In this case, the theoretically predicted condition that the Weyl semimetal state
appears when both the cubic symmetry and the time reversal

Authors
M. Yamada, M. Oshikawa, and G. Jackelia
aUniversity of Stuttgart and Max-Planck Institute for Solid State
Research

Tuning of Luttinger Semimetal into Weyl
Semimetal by Strain and Magnetic Field
Nakatsuji, Lippmaa, Katsumoto, and Kindo Groups
In the field of condensed matter physics, there has been
an intense search for topological nontrivial electronic phases
in strongly correlated materials. To date, most research on
topological electronic systems has been limited to weakly

14

ISSP Activity Report 2018

Fig. 1. Additional contribution to the negative longitudinal magnetoresistance for a Pr2Ir2O7 thin film. (A) Experimental configurations. B
and I represent the external magnetic field and current, respectively. For
the longitudinal(B- - // I) and transverse (B ⊥ I) cases, B is applied along
the [110] and [110] direction, respectively. I flows along the [110]direction in both cases. (B) Magnetoresistance curves as a function of
B measured at 2 K for B // I and B ⊥ I configurations. The solid anddotted lines correspond to up and down sweeps of B, respectively. The
difference between the two curves comes from the chiral anomaly andindicates that the film is in the Weyl semimetal state.

Strong Electronic Correlations
in a Luttinger Semimetal Pr2Ir2O7
Nakatsuji Group

Fig. 2. Planar Hall effect in a Pr2Ir2O7 thin film. (A) Experimental
configuration. I flows along the [110] direction and B is applied in thesame plane. The angle between I and B (φ) is changed by the in-planerotation of the sample. The longitudinal and planar Hall resistance ismeasured by Vxx and VPHE, respectively. (B and C) Angle dependenceof the longitudinal and planar Hall resistivity, respectively, measured
at 70 K and 9 T. The red and blue open circles are the experimental
data, and the black solid lines are the fitting results using the equations
predicted theoretically [10,11]. The experimental results agree wellwith the theory, suggesting that the film has been tuned into the Weyl
semimetal state.

symmetry are broken is satisfied in the strained grains in
the film. On the other hand, although the relaxed grains arein the Luttinger semimetal state, it is possible that they canbe tuned into a magnetic Weyl semimetal when an external
magnetic field is applied and the time reversal symmetry is
broken. To confirm this, we examine the effects of the chiralanomaly, which is the magneto-electric response of the Weyl
semimetal. As a result, we find strong evidence for the chiralanomaly in the negative longitudinal magnetoresistance [9](Fig. 1) and the planar Hall effect [10,11] (Fig. 2). Thismeans that the Luttinger semimetal can be modified into the
Weyl semimetal by an external magnetic field.
In summary, we have successfully fabricated epitaxial
thin films of Pr2Ir2O7 and experimentally demonstrated that
the Weyl semimetal state can be induced either by latticestrain or by applying an external magnetic field. Based on
the results with the Luttinger semimetal, the research for the
topological phases in strongly correlated systems, which has
not been done so far, will proceed. It is expected to lead tothe development of ultrahigh-speed and low-power devices
utilizing the Weyl fermions having high electric and thermal
conductivities.

In 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 shown in
Fig. 2 [3]. This value is several tens of times larger than thatof zero-gap semiconductors (e.g. α–Sn and HgTe) known sofar. 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 of the electronic
correlations is estimated from the dielectric constant, thescale of electronic correlations is about 2 orders of magni-

References[1] B. Q. Lv et al., Phys. Rev. X 5, 031013 (2015).
[2] S.-Y. Xu et al., Science 349, 613 (2015).
[3] X. Wan et al., Phys. Rev. B 83, 205101 (2011).
[4] B. Cheng, T. Ohtsuki et al., Nat. Commun. 8, 2097 (2017).
[5] E.-G. Moon et al., Phys. Rev. Lett. 111, 206401 (2013).
[6] T. Kondo et al., Nat. Commun. 6, 10042 (2015).
[7] T. Ohtsuki et al., Proc. Natl. Acad. Sci. U.S.A. 116, 8803 (2019).
[8] Y. Machida et al., Nature 463, 210 (2010).
[9] D. T. Son and B. Z. Spivak, Phys. Rev. B 88, 104412 (2013).
[10] A. A. Burkov, Phys. Rev. B 96, 041110(R) (2017).
[11] S. Nandy et al., Phys. Rev. Lett. 119, 176804 (2017).
Authors
T. Ohtsuki, Z. Tian, A. Endo, M. Halim, S. Katsumoto, Y. Kohama, K.
Kindo, M. Lippmaa, and S. Nakatsuji

Fig. 1. Band structure of a Luttinger semimetal, which is a zero-gap
semiconductor. The valence band, which is filled with electrons (bluespheres) and the empty conduction band both have a three-dimensional
parabolic shape, and are in contact with each other at a single pointclose to the Fermi level.

ISSP Activity Report 201815

Fig. 2. Thickness dependent thermal voltage for (a) Mn and (b) Mn-Sn
alloy thin films on YIG. Insets are thickness dependence of resistivity.

Fig. 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.

tude 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 et al., Proc. Natl. Acad. Sci. U.S.A. 116, 8803 (2019).
[2] T. Kondo et al., Nat. Commun. 6, 10042 (2015).
[3] B. Cheng, T. Ohtsuki et al., Nat. Commun. 8, 2097 (2017).
Authors
T. Ohtsuki, B. Chenga, D. Chaudhuria, S. Nakatsuji, M. Lippmaa, and
N. P. Armitagea
aThe Johns Hopkins University

Large Spin Hall Effect in Amorphous
Mn-Sn Alloy Thin Film
Nakatsuji Group
Pure spin current contains only angular momentum
without net charge flow, which greatly reduces the Joule
heating. This feature makes spin current beneficial for
low power spintronic devices. The spin Hall effect (SHE)
converts charge current to transverse spin current, serving as
an effective way to generate pure spin current. Meanwhile,as the reciprocal effect of the SHE, the inverse spin Hall
effect (ISHE) converts pure spin current to transverse charge

current, and plays an important role in pure spin current
detection and conversion.
Although manipulation of pure spin current in heavytransition metals, ferromagnetic metals, and their alloys havebeen extensively explored in the past decade, antiferromagnets have become a new central stage due to its prominent
advantages such as high frequency magnetic dynamics,
negligible stray field, and perturbation insensitivity. Amongthese materials, the non-collinear Kagome lattice antiferromagnets Mn3X (X = Sn, Ge, Ga) stand out because of theirlarge transverse electrical [1-4] and optical [5] responses
to the external magnetic field as well as their negligible
magnetic moment.
In our work, we used the thermally generated pure spincurrent from the spin Seebeck effect (SSE) in the ferrimagnetic insulator yttrium iron garnet (YIG) to study the inverse
spin Hall effect in Mn and the Mn-Sn alloys (Fig. 1). A
series of samples with different thicknesses are sputtering
deposited onto YIG substrates. By measuring the ISHE
voltage, we obtained a sizable spin Hall angle θSH of -0.23%(which measures the conversion efficiency between charge
current and spin current), and a long spin diffusion length
λsd ≈ 11.5 nm for the single element material Mn, as shownin Fig. 2 (a). Most importantly, by doping Sn in Mn, we
found that the θSH of the Mn-Sn alloy, even in its amorphous
form, is increased by 20 times to -4.4%, while the resistivity(ρ) is reduced by about 10 times, as shown in Fig. 2 (b).
Therefore, the energy consumption (~ρ/θ2SH) of the Mn-Sn
alloy is reduced by 4000 times compared to Mn. A spin
pumping measurement further corroborates the enhancement of the θSH in the Mn-Sn alloy. These results not only
serve as essential references in studying the pure spin current
phenomena in Mn-based alloys, but also offer a promising
method for exploring future energy efficient spin Hall
materials with high spin Hall angle but low resistivity andthus low energy consumptions [6].
References[1] S. Nakatsuji, N. Kiyohara, and T. Higo, Nature 527, 212 (2015).
[2] M. Ikhlas, T. Tomita et al., Nat. Phys. 13, 1085 (2017).
[3] N. Kiyohara, T. Tomita, and S. Nakatsuji, Phys. Rev. Appl. 5,064009 (2016); A. K. Nayak et al., Sci. Adv. 2, e1501870 (2016).
[4] Z. H. Liu et al., Sci. Rep. 7, 515 (2017).
[5] T. Higo et al., Nat. Photon. 12, 73 (2018).
[6] D. Qu, T. Higo, T. Nishikawa, K. Matsumoto, K. Kondou, P. K.
Muduli, Y. Otani, and S. Nakatsuji, Phys. Rev. Mater. 2, 102001(R)(2018).
Authors
D. Qu, T. Higo, T. Nishikawa, K. Matsumoto, K. Kondoua, D. NishioHamane, R. Ishii, P. K. Muduli, Y. Otani and S. Nakatsuji
aRIKEN-CEMS

Fig. 1. Schematic of thermal spin injection from a ferromagnetic
insulator into an attached metal layer.

16

ISSP Activity Report 2018

Large Anomalous Hall Effect inThin Films of a Weyl Magnet Mn3Sn
Nakatsuji and Otani Groups
Recently, there has been a surge of interest in antiferromagnets (AFMs) as prospective spintronic materials forhigh-density and ultrafast memory devices because of theirvanishingly small stray ﬁeld and orders of magnitude fasterspin dynamics compared to their ferromagnetic counterparts.
In particular, the recently discovered functional antiferromagnet D019 Mn3Sn has attracted broad attention as theﬁrst example of a magnetic Weyl material/Weyl magnet[1-5]. This material exhibits a variety of useful functions
that have never been observed before in antiferromagnets atzero magnetic ﬁeld, including the anomalous Hall effect [1],the anomalous Nernst effect [2], and the magneto-optical
Kerr effect [5] at room temperature. All these propertiesare controllable by a magnetic ﬁeld and thus can be used
for designing antiferromagnetic spintronics and in energy
harvesting technology. It has been shown that such an
antiferromagnet hosts a topological state characterized bymagnetic Weyl fermions [3,4]. The discovery of the Weyl
metal state in an antiferromagnet opens up a new chapter
of applied research using the functional antiferromagnets.
Therefore, fabrication of high quality thin ﬁlms of the Weyl
antiferromagnet becomes all the more important.
For the thin ﬁlm fabrication, we employ DC magnetron
sputtering. The ﬁlms (40-400 nm) are deposited at room
temperature onto a Si/SiO2 substrate from the Mn3Sn target.
After the deposition at room temperature, we anneal the ﬁlm
at 500ºC for one hour, and thereby crystallizes the as-deposited amorphous ﬁlm in a polycrystalline form of the Mn3Sn
ﬁlm. XRD measurements reveal that the ﬁlms are the single
phase of Mn3Sn and are in a randomly oriented polycrystalline form; all the peaks can be indexed by the hexagonal
P63/mmc symmetry of D019 Mn3Sn, with no additional peaks
Si

Intensity (a.u.)

(a)

SiO2

400 nm

(110)

(021)
(002)
(012)

(020)

(121)
(120) (112)D019 Mn3Sn simulation

25

30

40
2θ (deg.)400

ρH (H = 0) (µΩ cm)

-2

45

50

55

3

200
100
100

200
T (K)

0
300

1
0

-1
-2
-3

Giant Anomalous Nernst Effect at Room
Temperature in a Weyl Ferromagnet
Nakatsuji Group2ρ (µΩ cm)
ρH (µΩ cm)

300

-1

0
0

35

References[1] S. Nakatsuji, N. Kiyohara, and T. Higo, Nature 527, 212 (2015).
[2] M. Ikhlas, T. Tomita et al., Nat. Phys. 13, 1085 (2017).
[3] K. Kuroda, T. Tomita et al., Nat. Mater. 16, 1090 (2017).
[4] H. Yang et al., New J. Phys. 19, 015008 (2017).
[5] T. Higo et al., Nat. Photon. 12, 73 (2018).
[6] T. Higo, D. Qu, Y. Li, C. L. Chien, Y. Otani, and S. Nakatsuji, Appl.
Phys. Lett. 113, 202402 (2018).
Authors
T. Higo, D. Qu, Y. Lia, C. L. Chiena, Y. Otani, and S. Nakatsuji
aJohns Hopkins University

40 nm
(011)

due to plausible impurity phases (Fig.1(a)).
Figure 1(b) shows the temperature dependence of thelongitudinal resistivity ρ and the spontaneous Hall resistivity
ρH (H = 0) of the Mn3Sn thin ﬁlm under zero ﬁeld. The
behavior of longitudinal resistivity ρ conﬁrms the metallic
transport consistent with the previous work on bulk single
crystals [2]. The zero-ﬁeld Hall resistivity ρH (H = 0) was
obtained from (ρH (H = +0) - ρH (H = -0))/2. (Here, we use+0 and -0 to indicate zero magnetic ﬁeld approached, respectively, from +5 T and -5 T in the Hall resistivity measurement
at each temperature.) We have observed a sharp decreasein ρH (H = 0) below T1 = 260 K on cooling; this behavior
agrees with the magnetic symmetry consideration in Mn3Sn
that the inverse triangular spin structure breaks the global
time-reversal symmetry, whereas time-reversal symmetry
is restored in the low temperature helical phase. Figure 1(c)displays the ﬁeld dependence of the Hall resistivity ρH (H)at 300 K as a function of the magnetic ﬁeld applied perpendicular to the ﬁlm surface. The anomalous Hall effect of
the Mn3Sn ﬁlms exhibit a significant change in ρH (H) from
1.5 μΩcm to -1.5 μΩcm with increasing ﬁeld despite thevanishingly small magnetization; this feature is generated by
the switching of the antiferromagnetic domain in real space
and the large ﬁctitious ﬁeld in momentum space [6]. Notably,
this is the first report on the thin ﬁlm of the antiferromagnetic
Mn3Sn ﬁlm exhibiting the large anomalous Hall effect of thesame order of magnitude as the value reported for bulk. Ourfabrication of the high-quality thin ﬁlm of the Weyl magnet
Mn3Sn and the observation of its large anomalous Hall effectprovide an important step to further develop devices usefulfor antiferromagnetic spintronics, such as for high-speed andhigh-density information storage.

-4

-2

0
2
µ0H (T)

4

Fig. 1. (a) Room temperature spectra obtained with an X-ray diffractometer for the 40 and 400 nm thin ﬁlms of Mn3Sn on a Si/SiO2
substrate. The theoretical spectrum of the D019 Mn3Sn structure isshown at the bottom. (b) Temperature dependence of the resistivity
ρ and the spontaneous Hall resistivity ρH of the Mn3Sn (40 nm) thinﬁlm. (c) Field dependence of the Hall resistivity ρH measured under amagnetic ﬁeld applied in the perpendicular direction to the surface ofthe Mn3Sn thin ﬁlms.

The anomalous Nernst effect (ANE) is a well-known
thermoelectric effect for ferromagnets, namely the generation of an electric voltage perpendicular to both magnetization and an applied temperature gradient. This transverse
geometry of ANE leads to various advantages for thermoelectric modules compared to the conventional one basedon Seebeck effect, such as simpler structure to efficiently
cover a heat source, higher flexibility, lower production
cost, and larger conversion efficiency for the same figure of
merit [1]. However, the size of ANE is generally very small(on the order of ~0.1 μV/K), which hinders its practicalapplications. Recent theoretical and experimental investigations on topological materials indicate that the intense Berrycurvature of Weyl points near the Fermi energy can enhance
the intrinsic ANE, rendering ANE an powerful probe to

ISSP Activity Report 201817

Fig. 1. Magnetic field dependence of anomalous Nernst coefficient of
Co2MnGa at room temperature.

clarify the topological electronic structure in magnetic Weyl
semimetals [2-4]. In other words, a ferromagnet exhibiting a
giant ANE may serve as an ideal ground for magnetic Weyl
semimetal state.
In this work, we report the giant ANE in a full-Heusler
ferromagnet Co2MnGa, reaching a record high value of Syx~6 μV/K at room temperature [5] (Fig. 1). The crossoverfrom Mott relation αyx ~ T to –lnT dependence is observed
on warming, where αyx is the transverse thermoelectric
conductivity, indicating the proximity to the quantum
Lifshitz transition between type-I and type-II magnetic
Weyl fermion states. Out study provides a new guideline
for searching new topological magnets which are useful forenergy harvesting and spintronics.
References[1] M. Mizuguchi and S. Nakatsuji, Sci. Tech. Adv. Mater. 20, 262(2019).
[2] D. Xiao et al., Rev. Mod. Phys. 82, 1959 (2010).
[3] M. Ikhlas et al., Nat. Physics 13, 1085 (2017).
[4] K. Kuroda et al., Nat. Mater. 16, 1090 (2017).
[5] A. Sakai et al., Nat. Physics 14, 1110 (2018).
Authors
A. Sakai, Y. P. Mizuta b,c, A. A. Nugroho d, R. Sihombing d, T.
Koretsunea,c, M.-T. Suzukia,c, N. Takemoric, R. Ishii, D. N.-Hamane,
R. Aritaa,c, P. Goswamie,f, and S. Nakatsujia
aCREST, Japan Science and Technology Agency (JST)bKanazawa University
cCenter for Emergent Matter Science, RIKEN
dBandung Institute of Technology
eUniversity of Maryland
fNorthwestern University

Fig. 1. Scanning electron microscope image of the spin-accumulation
device. The microfabricated Mn3Sn single crystal is indicated by the
red dashed line. A NiFe ferromagnetic electrode and non-magnetic Cu
electrodes are indicated by blue and brown areas, respectively. Theedge of the Mn3Sn crystal indicated by yellow area is covered with a
30-nm-thick Al2O3 insulating layer to avoid electrical contact at theedge.

been studied intensively in these days. Here we show that
antiferromagnets have richer spin Hall properties than thatof non-magnetic materials. The material focused on here is
Mn3Sn, which shows non-collinear antiferromagnetic orderof Mn magnetic moments that have an inverse triangularspin configuration on stacked kagome lattices [1]. We find
non-trivial time reversal-symmetry-breaking counterparts ofthe conventional SHE, which is called magnetic spin Hall
effect [2].
To study the SHE in a non-collinear antiferromagnet, wefabricated a device consisting of ferromagnetic NiFe andnon-magnetic Cu electrodes formed on the top surface ofa microfabricated 100-nm-thick Mn3Sn single crystal (seeFig.1). An electric current was applied along the [2110] axis
and the voltage was measured between electrodes aligned
along the [0110] axis, perpendicular to the current. If current
inside Mn3Sn generated spin accumulation with a component
parallel to the NiFe magnetization, it would shift the electrochemical potential across the Mn3Sn/NiFe interface andcan therefore be detected as a voltage between NiFe and theCu electrodes. A rectangular resistance–magnetic field (R–B) hysteresis loop corresponding to the switching of NiFe
magnetization is expected for a fixed polarization directionof the accumulated spins. Such a rectangular R–B hysteresis loop was observed in the magnetic-field dependence ofthe transverse voltage between NiFe and the Cu electrodes.
The results in a and b were obtained after saturation of
Mn3Sn with a sufficiently large magnetic field B of −0.75 T

Magnetic Spin Hall Effect in a
Non-Collinear Antiferromagnet
Otani and Nakatsuji Groups
The conventional spin Halle effect (SHE) converts
electrical currents to transverse spin currents in non-magnetic
conductors in response to an electric field. The SHE has
thus drawn much attention as a means to switch the magnetization of the adjacent ferromagnetic layer via spin orbit
torque. New functions have been further explored in various
materials in terms of spin-charge currents interconversion. The magnetic contribution to the SHE has therefore

18

ISSP Activity Report 2018

Fig. 2. Spin-accumulation signal. a, b, Magnetic-field dependenceof resistance measured between the NiFe and Cu electrodes at room
temperature. The results in aand bwere obtained after saturation of
Mn3Sn with a sufficiently large magnetic field Bof −0.75 T and +0.75
T, respectively. The corresponding spin structures of Mn3Sn are shownin the insets.

and +0.75 T, respectively, which provide evidence that therectangular loops originate from spin accumulation at the
Mn3Sn surface. The key observation in this work is that the
spin accumulation signal changes indicate when the Mn3Sn
sub lattice moments are reversed, as illustrated in the inset.
This unexpected sign change demonstrates that the dominant
contribution to the SHE in Mn3Sn is odd under time reversal.
We find that in the non-collinear antiferromagnet Mn3Sn,
the SHE has an anomalous sign change when its triangularly
ordered moments switch orientation. This discovery expands
the horizons of antiferromagnet spintronics and spin–charge
coupling mechanisms.
References[1] S. Nakatsuji et.al., Nature 527, 212 (2015)[2] M. Kimata et.al., Nature 565, 627 (2019)
Authors
Y. Otani, H. Isshiki, M. Kimata, H. Chena, K. Kondoub, S. Sugimoto,
P. K. Muduli, M. Ikhlas, Y. Omori, T. Tomita, A. H. MacDonalda, and
S. Nakatsuji
aUniversity of Texas at AustinbRIKEN-CEMS

Lithium-Ion Conductivity in Single
Crystals of Li10GeP2S12
Hiroi GroupThe all-solid-state lithium-ion battery has been studied
extensively as a next-generation secondary battery. It uses asolid instead of a liquid electrolyte, which enables to achieve
greater safety, higher energy density, wider temperature
range of operation, and larger output power compared withthe conventional battery. To realize this, an efficient Li-ion
conductor is required, which exhibits conductivity that iseither comparable to or larger than that of commerciallyused organic liquid electrolytes. Li10GeP2S12 (LGPS) is apromising candidate for the super ionic conductor; comparedto other candidates, it has the highest conductivity of 12 mS
cm–1 at room temperature and an outstanding electrochemical performance in Li batteries [1,2]. Thus, LGPS is a key
compound in the materialization of the all-solid-state battery.
The high Li-ion conductivity of LGPS has been ascribedto its specific crystal structure shown in Fig. 1a. There are
four partially occupied Li sites inside the rigid framework
composed of the tetrahedral units of Ge0.5P0.5S4 and PS4.
Among them, the Li1, Li3, and Li4 sites are located in the

distorted tetrahedra of S, while the Li2 site is in the distorted
octahedron of S. It has been shown that the Li diffusion
between the former sites is crucial for the high conductivity,
while the Li2 ions are almost immobile.
A highly anisotropic ion diffusion has been proposed
based on neutron diffraction (ND) measurements andmolecular dynamics calculations: a one-dimensional (1D)channel via the Li1–Li3 path along the c axis is dominant,and a two-dimensional (2D) hopping via the Li1–Li4 path in
the <110> direction is secondary [3]. The activation energiesof the local hopping processes for the 1D and 2D paths
are determined as 0.16 (0.17) and 0.26 (0.28) eV from the
NMR experiments (the molecular dynamics calculations),
respectively. Thus, considerable anisotropy can be expectedin the atomic-scale diffusion process. In contrast, pulsedfield gradient NMR measurements, which may be sensitive
to long-range Li diffusion at the micrometer scale, suggests a
nearly isotropic Li diffusion.
An impedance measurement using a single crystal
provides important information with which to clarify theorigin of this difference and the mechanism of ion diffusion in LGPS. However, because of the lack of a sufficiently
large single crystal, the Li diffusion in the bulk had not beenmeasured thus far. Previous impedance measurements using
polycrystalline samples yielded an average conductivityof ~10 mS cm–1 and activation energy of 0.22–0.28 eV.
Understanding of the true conduction mechanism in LGPS
is crucial for the improvement of LGPS and for further
development of a better solid electrolyte for the all-solidstate battery. In the present study, we obtain large single
crystals of LGPS, a few millimeters in size, using the selfflux method (Fig. 1b), and carry out impedance measurements in the [001] and [110] directions [4]. The conductivity
is, in fact, higher along [001] than along [110]; however, thedifference is only a factor of 4. In addition, the activationenergies are nearly equal for the two directions, suggestinga weak anisotropic 3D diffusion in LGPS, as schematicallyillustrated in Fig. 1c.
References[1] N. Kamaya, K. Homma, Y. Yamakawa et al., Nat. Mater. 10, 682(2011).
[2] Y. Kato, S. Hori, T. Saito et al., Nat. Energy 1, 16030 (2016).
[3] X. Liang, L. Wang, Y. Jiang et al., Chem. Mater. 27, 5503 (2015).
[4] R. Iwasaki, S. Hori, R. Kanno, T. Yajima, D. Hirai, Y. Kato, and
Z. Hiroi, Chem. Mater. 31, 3694 (2019).
Authors
R. Iwasaki, S. Horia, R. Kannoa, T. Yajima, D. Hirai, Y. Katob, and
Z. HiroiaTokyo Institute of Technology
bToyota Motor Corporation

From Gapless Kitaev Spin Liquid
to Classical String Gas throughTensor Networks
Kawashima Group
Fig. 1. (a) Crystal structure of Li10GeP2S12 (LGPS), (b) photograph oftypical LGPS crystals of a few millimeters in size, and (c) schematic
drawing illustrating the possible conducting paths of Li ions in LGPS.
The one-dimensional channel via the Li1–Li3 path along the c axis isdominant, and a two-dimensional hopping via the Li1–Li4 path in the<110> direction is secondary in the short-range Li-ion conduction.
However, the actual long-range conduction occurs via such meandering
paths as shown by the green and orange lines in (c), which give rise to
weakly anisotropic Li-ion conductivity.

Quantum spin liquids (QSLs) represent a state ofquantum matter which is not characterized by any local orderparameters even at zero temperature. These novel states are
expected to exhibit long-range entanglement leading to the
topological order and fractionalized excitations. For example,
the Haldane phase, which is known as a symmetry-protected
topological phase, is a fascinating phase one can find in the

ISSP Activity Report 201819

Fig. 1. Schematic representation of the "loop-gas" state. It is a sumof all loop-gas configurations. Each configuration corresponds to a
product of Pauli operators. The loop-gas configuration determines
which Pauli operator is aligned on a given lattice.

S=1 quantum spin chain. The novel character that discriminates the Haldane phase from trivial gapped states was mostclearly revealed by the discovery of Affleck-Kennedy-LiebTasaki (AKLT) model and its exact ground state or the AKLT
state. Its compact representation in the form of a matrixproduct state provided a new insight into the Haldane phase.
As a two-dimensional system with spin-liquid state, theKitaev model on honeycomb lattice (KHM) is now a subjectof active research, due to recent successful realizations ofKitaev materials. The model is exactly solvable and exhibits
gapless and gapped Kitaev spin liquid (KSL) ground stateswith fractionalized excitations.
In the present work, we propose a "loop-gas" state, i.e.,an exactly-solvable quantum state that has a compact andexact tensor-network representation, and a series of ansatzethat starts from the loop-gas state and converges rapidly
to the KHM ground-state. The loop gas state is defined by
the loop-gas projector applied to a product state in which
all spins are aligned in the (111) direction. The loop-gas
projector is defined as tensor-network operator with bonddimension 2, which is represented by a sum of all loop
configurations each corresponding to a product of Pauli
operators on all lattice points. (Fig. 1) We find that the normof the loop gas state is exactly the same as the classical loop
gas model at the critical fugacity on honeycomb lattice. The
classical loop gas model appears in the low-temperature
expansion of the Ising model, and therefore shares the same
critical properties as the latter. These observations establishes
that the correlation function of the loop-gas state is exactly
the same as the correlation function of the critical Isingmodel. Furthermore, by defining the dimer-gas operator inan analogous way to the loop-gas operator, and applying itto the loop-gas state, we can improve the loop-gas state as an
approximate to the KHM ground-state. (Fig. 2) For example,
the second order approximation, which is obtained byapplying the dimer-gas operator twice, achieves more than
4-digits accuracy in the energy. This is better than any otherprevious variational wave function. Also, note that there are
only two adjustable parameters in the ansatz.
From these results, we conclude that the series of ansatze

Fig. 2. The series of ansatze converging to the exact KHM ground-state.
The zero-th one is the loop-gas state. The energy of the second orderapproximation already attains 4-digit accuracy, which has never beenachieved by other numerical variational methods.

20

ISSP Activity Report 2018

starting from the loop-gas state correctly reflects the essential
properties of the family of KSLs, which is known to belong
to the Ising universality class. Since the present description of KSLs does not rely on the mapping to fermions, it
provides us with an alternative view point to discuss KSLs.
Reference[1] Hyun-Yong Lee, Ryui Kaneko, Tsuyoshi Okubo and Naoki
Kawashima: arXiv:1901.05786.
Authors
H.-Y. Lee, R. Kaneko, T. Okuboa, and N. Kawashima
aDepartment of Physics, University of Tokyo

Evolution of Magnetic Double Helixand Quantum Criticality Near a Domeof Superconductivity in CrAs
Uwatoko GroupThe study of unconventional superconductivity (SC)is one of the most vigorous research fields in condensed
matter physics. Although the underlying mechanisms for theunconventional SC in cuprate, iron-based, and heavy-fermion
superconductors remains elusive, extensive investigations
over the last decades have evidenced quantum criticality as a
candidate mechanism for these diverse classes of superconductors. The phase diagrams of these materials often feature
a superconducting dome situated adjacent to a magneticallyordered state, with the optimal superconducting transition
temperature (Tc) located near a quantum critical point. The
close proximity of SC to magnetic order makes it important
to elucidate the nature of magnetism.
Recently, we found CrAs as the first superconductor
among Cr-based compounds. The transport measurements
indicated that the development of SC is accompanied by the
suppression of double-helical magnetic order that is coupledwith a first-order isostructural transition at ambient pressure.
These observations make CrAs an ideal platform for in-depth
studies on how the coupled structural and helimagnetic
orders are tuned to the critical point and how the magnetism is coupled to the unconventional SC developed nearby.
In combinations of elastic and inelastic neutron scattering,
resistivity, and specific-heat measurements on undoped CrAs

Fig. 1. Pressure dependencies of the double helical (DH) magnetictransition temperature TN and the superconducting (SC) transition
temperature Tc for CrAs. Schematic views of the DH structure andCooper pairing are illustrated in the figure.

and P-doped CrAs1-xPx single crystals and powders, wehave studied systematically the evolutions of static helicalorder and dynamic spin correlations as well as the electronic
properties of CrAs when its coupled structural/helical orderis suppressed by either external pressure or the chemical
substitutions.
Neutron diffraction on the single-crystal CrAs underhydrostatic pressure (P) shows that the combined orderis suppressed at Pc ≈ 10 kbar, near which bulk superconductivity develops with a maximal transition temperature
Tc ≈ 2 K. We further show that the coupled order is also
completely suppressed by phosphorus doping in CrAs1-xPx ata critical xc ≈ 0.05, above which inelastic neutron scattering
evidenced persistent antiferromagnetic correlations,providing a possible link between magnetism and superconductivity. In line with the presence of antiferromagnetic
fluctuations near Pc (xc), the A coefficient of the quadratic
temperature dependence of resistivity exhibits a dramaticenhancement as P (x) approaches Pc (xc), around which r(T)has a non-Fermi-liquid form. Accordingly, the electronic
specific-heat coefficient of CrAs1-xPx peaks out aroundxc. These properties provide clear evidences for quantum
criticality, which we interpret as originating from a nearlysecond-order helimagnetic quantum phase transition that isconcomitant with a first-order structural transition.
We propose that these results can be understood in termsof a proximity to a magnetic quantum critical point tuned by
the degree of the incipient localization of the Cr-3d states,
possibly via an orbital-selective Mottness mechanism. Ourfindings in CrAs highlight the distinct characteristics ofquantum criticality in bad metals, thereby bringing out new
insights into the physics of unconventional SC such as occurring in the high-Tc iron pnictides.
References[1] W. Wu, J.-G. Cheng, K. Matsubayashi, P. P. Kong, F. K. Lin, C. Q.
Jin, N. L. Wang, Y. Uwatoko, and J. L. Luo, Nature Communications
5, 5508 (2014) .
[2] M. Matsuda, F. K. Lin, R. Yu, J.-G. Cheng, W. Wu, J. P. Sun,
J. H. Zhang, P. J. Sun, K. Matsubayashi, T. Miyake, T. Kato, J.-Q. Yan,
M. B. Stone, Qimiao Si, J. L. Luo, and Y. Uwatoko, Phys. Rev. X 8,031017 (2018).
Authors
M. Matsudaa, F. K. Linb, R. Yuc, J.-G. Chengb, W. Wub, J. P. Sunb, J. H.
Zhangb, P. J. Sunb, K. Matsubayashi, T. Miyaked, T. Kato, J.-Q. Yana,
M. B. Stonea, Qimiao Sie, J. L. Luob, and Y. Uwatoko
aOak Ridge National Laboratory
bInstitute of Physics, Chinese Academy of Sciences
cRenmin University
dNanosystem Research Institute, AISTeRice University

transfer, surface K dosing, and gate-voltage regulation.
Further enhancement of Tc via adding more electrons seems
to be plagued by the observed insulating state in the over
doped regime. Given the limitations of electron doping, it
is imperative to explore other routes to enhance Tc of theseheavily electron doped (HED) FeSe materials further. In
contrast to electron-doping approaches, the application ofhigh pressure can provide an alternative means.
In this work [1], we had performed high-pressure
measurement on Li0.36(NH3)yFe2Se2 single crystal, which
can reach an optimal≈ 44.3 K at ambient pressure.
From high-pressure resistivity and AC- susceptibility
measurement, we can conclude that superconducting transition temperature Tc ≈ 44 K at ambient pressure is firstsuppressed to below 20 K upon increasing pressure to
Pc ≈ 2 GPa above which the pressure dependence of Tc(P)reverses and Tc increases steadily to 55 K at 11 GPa. These
results thus evidence a pressure-induced second high-Tc
superconducting (SC-II) phase in Li 0.36 (NH 3 ) y Fe 2 Se 2
with the highest≈ 55 K among the FeSe-based bulk
materials. Also it is evident that the SC-II phase is bulk innature for 6 GPa, whereas the sample contains two superconducting phases with different Tc above 6 GPa: The
high-Tc (50K) phase has a small but nearly constant volume
fraction~30% to 11 GPa, whereas the low-(33K) phaseshrinks and vanishes completely Tc above 11 GPa.
Figure 1 summarizes the pressure dependences of, andfor Li0.36(NH3)yFe2Se2 together with the, of FeSe for comparison. The temperature-pressure
phase diagram depicts explicitly the evolution of the superconducting phase of Li0.36(NH3)yFe2Se2 under pressure. The
high-Tc SC-1 phase, intitially achived at ambient pressure via
doping electron through inserting lithium Li+ and ammonia
in between the FeSe layers, is quikly suppressed by pressure,and the supercondiucting phase emerges above Pc ≈ 2 GPaand exists in a broad pressure range.
To further characterize the SC-II phase, we tentatively
probe the information about Fermi surface under pressure
by measuring the Hall effect in the normal state just above
Tc. Hall data confirms that in the emergent SC-II phase thedominant electron-type carrier density undergoes a fourfold
enhancement and tracks the same trend as Tc(P). Interestingly, we find a nearly parallel scaling behavior between
Tc and the inverse Hall coefficient for the SC-II phases ofHigh-Tc Superconductivity up to 55 K
under High Pressure in a Heavily
Electron-Doped Li0.36(NH3)yFe2Se2Single Crystal
Uwatako GroupTo find out the approaches to raise the critical temperature Tc of unconventional superconductors is one of themost enduring problems in contemporary condensed
matter physics. The principal route to raise the Tc of FeSe
is to dope electron, which has been successfully achieved
via the interlayer intercalations [AxFe2−ySe2 (A = K, Rb),
Ax(NH3)yFe2Se2, and (Li,Fe)OHFeSe], interface charge

Fig. 1. The T-P phase diagram of the Li0.36(NH3)yFe2Se2 single

crystal. The pressure dependence of the superconducting transition
temperatures Tc up to 12 GPa.

ISSP Activity Report 201821

Li0.36(NH3)yFe2Se2.
Our present study thus demonstrates a way for highpressure to raise Tc of these HED FeSe-based materials by
increasing the effective charge-carrier concentration via a
possible Fermi-surface reconstruction at Pc.
Reference[1] 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, 020508 (2018).
Authors
P. Shahia,b, J.P. Suna,b, S.H. Wangc, Y.Y. Jiaoa,b K.Y. Chena,b, S.S. Sunc,
H.C. Leic, Y. Uwatoko, B.S. Wanga,b, and J-G Chenga,baBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences’bUniversity of Chinese Academy of Sciences
cBeijing Key Laboratory of Opto-electronic Functional Materials &Micro-nano Devices, Renmin University of China

Thermodynamic and Structural Studies
on Super High Entropy Liquids, Alkylated
Tetra-phenyl Porphyrins
Yamamuro GroupThe fusion (melting) temperature Tfus of molecules
usually depend on molecular mass M; the larger M is, thehigher Tfus becomes. For example, Tfus of benzene (C6H6,
M = 78) is 279 K while that of biphenyl (C6H5-C6H5, M =154) is 342 K. This is because the intermolecular van der
Waals interaction is larger in the crystalline phase with bettermolecular packing than that in the liquid phase with worse
packing.
Recently, Nakanishi group in NIMS found a seriesof large molecules which exist in liquid states at room
temperature. These molecules have π-conjugated coressuch as pyrene, naphthalene, anthracene, fullerene, phthalocyanine and long alkylchains bonded to the cores [1]. We
consider that these alkylated molecules are stabilized by thelarge entropy effect which is caused by the conformational
disorder of alkylchains. This situation is similar to that ofionic liquids which are in liquid states in spite of their strong
inter-ionic interactions. We collectively call this type ofliquids “super-high entropy liquids (SHEL)”. The physico-Fig. 2. Temperature dependence of the reduced pair distributionfunctions of 2,5-C6C10-TPP calculated from the X-ray diffraction data.
The distances corresponding to the intra and intermolecular correlations
are given in the figure.

chemical properties of SHEL have not been studied well. As
the first target we have taken 2,5-C6C10-tetraphenylporphyrin(2,5-C 6 C 10 -TPP) and 3,5-C 6 C 10 -tetraphenylporphyrin(3,5-C6C10-TPP). The molecular structure of 2,5-C6C10-TPP
is shown by the inset of Fig. 1; two -O-C6C10 groups arebonded symmetrically to a benzene ring in 3,5-C6C10-TPP.
It is quite interesting that Tfus of the alkylated molecules(2,5-C6C10-TPP, M = 2538) is lower than Tfus of non-alkylated molecules (TPP, M = 615, Tfus = 723 K).
We have measured the heat capacities of 2,5-C6C10-TPP
and 3,5-C6C10-TPP by use of an adiabatic calorimeter in ourlab. The Cp plot shown in Fig. 1 revealed that both molecules
have a broad glass transition at around Tg = 210 K and the Cpof 2,5-C6C10-TPP is 2-3 % larger than that of 3,5-C6C10-TPP
at above Tg. The configurational entropies calculated fromthe Cp data are more than 1000 JK-1mol-1 at high temperature
limit, which is more than 10 times larger than those of usual
molecular liquids. We have also measured the X-ray diffraction of 2,5-C6C10-TPP and 3,5-C6C10-TPP using a diffractometer at BL04B2, SPring-8. Figure 2 shows the reduced
pair-correlation function G(r) calculated from the diffraction data; a similar result is obtained in 3,5-C6C10-TPP.
Most of the G(r) peaks are attributed to the C-C correlations in alkylchains. The broad peak at 9 Å, maybe also at
4.5 Å, is considered to be the correlation between porphyrinrings. The present data suggest that the configurations ofalkylchains and porphyrin rings of 2,5-C 6C10-TPP and
3,5-C6C10-TPP are highly disordered at higher temperatures and becomes ordered at lower temperatures. Now weare measuring the quasielastic neutron scattering of both
samples to investigate the dynamics of both alkylchains andporphyrin cores.
References[1] A. Ghosh and T. Nakanishi, Chem. Commun. 53, 10344 (2017).
[2] A. Ghosh, M. Yoshida, K. Suemori, H. Isago, N. Kobayashi,
Y. Mizutani, Y. Kurashige, I. Kawamura, M. Nirei, O. Yamamuro,
T. Takaya, K. Iwata, A. Saeki, K. Nagura, S. Ishihara, and T. Nakanishi,
Nature Chem., submitted.

Fig. 1. Heat capacities of 2,5-C6C10-TPP and 3,5-C6C10-TPP. The inset
shows the molecular structure of 2,5-C6C10-TPP.

22

ISSP Activity Report 2018

Authors
M. Nirei, H. Akiba, A. Ghosha, T. Nakanishia, K. Oharab, S. Koharaa,
and O. Yamamuro
aNIMS
bJASRI

Magnetic States of Coupled Spin Tubes
with Frustrated Geometry in CsCrF4
Masuda Group
When a theoretical model is realized in nature, small
perturbation terms play important roles in the selection of
the ground state in geometrically frustrated magnets. In
case of a triangular spin tube, the two-dimensional networkof the inter-tube interaction forms characteristic lattices.
Among them Kagome-Triangular (KT) lattice in Fig. 1(a) is
known to exhibit an enriched phase diagram [1] including
various types of non-trivial structures: non-coplanar cuboc
structure, coplanar 120º structure with— the—two-dimensional
propagation vector of k2D = 0, √ 3 × √ 3 structure with
k2D = (1 / 3, 1 / 3), and incommensurate structure as shownin Fig. 1(b). We investigate the magnetic state in the model
material CsCrF4 in Fig. 1(c) and 1(d) by using neutron
diffraction technique. Temperature evolution of the diffraction profile was collected as shown in Fig. 2(a). Combinationof representation analysis and Rietveld refinement reveals
that a very rare structure, i.e., a quasi-120º structure with
k2D = (1 / 2, 0) in Fig. 2(b), is realized at the base temperature. The classical calculation of the phase diagram elucidates that CsCrF4 is the first experimental realization of the
KT lattice having ferromagnetic Kagome bond. A singleion anisotropy and Dzyaloshinskii-Moriya interaction play
key roles in the selection of the ground state. Furthermore,a successive phase transition having an intermediate state
represented by k2D = (1 / 3, 1 / 3) is observed. The intermediate state is a partially ordered 120º structure in Fig. 2(c)[2].
This study was originally initiated for the neutron studyof the Tomonaga-Luttinger liquid predicted in a spin tube
using JRR-3 research reactor before east Japan earthquake in2010. Since the magnetic state is sensitive to impurity in thetitled compound, we need to check the reproducibility of thedata carefully. As a result, the quality of some samples used

Fig. 2. Magnetic neutron diffraction profile and magnetic structures. (a)The temperature variation of diffraction profiles in the range of 2θ =18º-33º. (b), (c) Candidates of the magnetic structures of CsCrF4 for the
ground state (b) and the intermediated state (c).

at JRR-3 were not good, and we needed to redo the experiment on selected high-quality sample using foreign neutron
facilities after 2010. All of the published data in Ref. [2]were, thus, collected at ECHIDNA spectrometer in ANSTO
Australia. Furthermore, the difficulty of the transportationof radioactive material such as Cs after the earthquake madethe situation complicated. Thanks to many people including
scientists, technicians, and office staff, we completed the
project.
References[1] H. Ishikawa et al., J. Phys. Soc. Jpn 83, 043703 (2014).
[2] M. Hagihala et al., npj Quantum Materials 4, 14 (2019).
Authors
M. Hagihala, S. Hayashida, M. Avdeeva, H. Manakab, H. Kikuchi and
T. Masuda,aAustralian Nuclear Science and Technology OrganizationbKagoshima University

Magnetic State Selected by Magnetic
Dipole Interaction in Kagome
Antiferromagnet NaBa2Mn3F11
Masuda and Hiroi Groups

Fig. 1. Coupled spin tubes with frustrated geometry. (a) KagomeTriangular (KT) lattice. J1 is the Triangular bond and J2 is the Kagomebond. (b) Phase diagram of the KT lattice. (c), (d) The crystal structureof CsCrF4. Blue and small gray circles represent Cr3+ and F- ions,
respectively. J1 is the Triangular bond and J2 is the Kagome bond. Thed1({α,β)} is DM vector (α,β = A,B,C). zA, zB, and zC are the z-axes
locally defined on the Cr sites, A, B, and C. Spin tube runs along the caxis in (d), and the tubes form the KT lattice in the a - b plane in (c).

Long-range magnetic dipole-dipole (MDD) interaction
is ubiquitous in nature. In most bulk magnets, the MDD
interaction is not necessarily a primary interaction because
its energy scale is much smaller than an exchange interaction. The MDD interaction, however, plays a key role ingeometrically frustrated magnets, where the geometry causes
macroscopic degeneracy of the magnetic state. For instance,
the origin of an exotic monopole state in pyrochlore oxides
is explained by the MDD interaction [1]. The frustrated
geometry and the MDD interaction are, thus, a good combination for search of a new magnetic state.
In a classical Heisenberg kagome antiferromagnet, theground state is known to be 120° structure with an infinite

ISSP Activity Report 201823

Indoor World Record of 1200 T Achievedby the Newly Installed Electromagnetic
Flux Compression Megagauss Generator
Takeyama and Y. H. Matsuda Groups

Fig. 1. (a) The tail-chase 120° structure on the kagome lattice. (b)Neutron diffraction profile for NaBa2Mn3F11 measured at 0.25 K. The
solid square and curves show experimental data and simulation, respectively. Arrows indicate magnetic Bragg peaks.

degeneracy. A small perturbation lifts the degeneracy andselects a unique structure, e.g., an all-in all-out structure incase of Dzyaloshinskii-Moriya interaction [2]. The MDD istheoretically predicted to select a tail-chase structure (Fig.
1(a)) [3]. Such a structure, however, has not been experimentally identified yet to date. NaBa2Mn3F11 having a uniquekagome-triangular lattice was synthesized by Hiroi groupin ISSP [4]. It exhibits an antiferromagnetic transition at
TN = 2 K. The estimated Curie-Weiss temperature of -32 K issmaller than those of many kagome magnets, indicating thatthe exchange spin interaction is small. The MDD interaction
may be important for the determination of the magnetic state.
Recently we carried out neutron powder diffraction experiment to identify the magnetic structure of
NaBa 2Mn 3F 11[5]. We observed magnetic Bragg peaks
at 0.25 K as shown in Fig. 1(b). They were indexed by acommensurate magnetic propagation vector k0 = (0,0,0),
and two incommensurate vectors k1 = (0.3209,0.3209,0) andk2 = (0.3338,0.3338,0). The magnetic structure analysis bycombination of Rietveld refinement and the representation
analysis reveals that the tail-chase 120° structure modulatedby the incommensurate vectors gives a satisfactory agreement with the experiment. Furthermore, we calculated
the phase diagram with the parameters of the nearest- andsecond-neighbor exchange interaction, and MDD interaction. We identified that the MDD interaction solves theinfinite degeneracy and selects the tail-chaise 120° structure
in NaBa2Mn3F11. For the future perspective, the study ofmagnetic dynamics is beneficial for the search for exotic
sates such as zero-energy mode induced by the MDD interaction.

The megagauss laboratory, ISSP, UTokyo, has a long
history of generations of megagauss fields, using electromagnetic flux compression (EMFC) since the original
work in the late 1970s led by the Chikazumi and Miuragroup. The 1000 T project was revisited in 2010 and 2011,
supported by the funding of the MEXT for the promotion of
the basic science, and since then, we have devoted ourselvesto the installation of the megagauss generation system andthe technical improvements. Condenser bank units with
20 kV, 2 MJ for the seed feed coils, and two sets of themain condenser bank units, 5 MJ and 2 MJ each with
50 kV charging capability have been incorporated. The
system consisting of these condenser modules has been
installed, and tuning for operation was recently completed in
2019. The giant collector plates and the load coil clamping
units have been placed in antiexplosion chambers. Designs of
the instruments were optimized for substantial improvementin the electromagnetic field energy conversion efficiency.
Using the newly installed system, we have successfully
generated ultra-high magnetic fields reaching 1200 T.
The magnet coil used in the EMFC method is comprisedof a single-turn steel outer (primary) coil lined with a copper
plate inside (the copper-lined (CL) coil; see Fig. 1) andthe so-called liner (a thin metal cylinder, made of copper)
which is coaxially set inside the primary coil. A pair ofseed field coils set on either side of the primary coil [1]–[3] provides the initial magnetic flux. The liner compresses
the magnetic flux and generates megagauss magnetic fields.
The EMFC utilizes the electric energy source stored in thecondenser bank modules. A record-breaking indoor generation of magnetic field was achieved by discharging 45 kV,
3.2 MJ energy out of 5 MJ condenser units. The liner (typicalsize is 119 mm diameter, 1.5 mm thickness, approximately

References[1] J. S. Gardner, M. J. P. Gingras, and J. E. Greedan, Rev. Mod. Phys.
82, 53 (2010).
[2] M. Elhajal, B. Canals, and C. Lacroix, Phys. Rev. B 66, 014422(2002).
[3] M. Maksymenko, V. R. Chandra, and R. Moessner, Phys. Rev. B 91,
184407 (2015).
[4] H. Ishikawa, T. Okubo, Y. Okamoto, and Z. Hiroi, J. Phys. Soc. Jpn.
83, 043703 (2014).
[5] 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, 054411 (2018).
Authors
S. Hayashida, H. Ishikawa, Y. Okamotoa, T. Okubob, Z. Hiroi, M.
Avdeevc, P. Manueld, M. Hagihala, M. Soda, and T. Masuda
aNagoya University
bDepartment of Physics, The University of Tokyo
cAustralian Nuclear Science and Technology OrganizationdISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory

24

ISSP Activity Report 2018

Fig. 1. Overall view of the CL coil and the measurement probe setting.
The liner vacuum chamber (made of the Bakelite cylinder and theacrylic resin plastic plates) with the measurement probe is firmly
furnished to the CL primary coil with high precision.

[2] F. Herlach, Rep. Prog. Phys. 62, 859 (1999).
[3] N. Miura and F. Herlach, High Magnetic Fields-Science andTechnology 1, 235 (World Scientific, 2002).
[4] D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda and S.
Takeyama, Rev. Sci. Instrum. 89, 095106 (2018).
[5] F. Herlach, Rep. Prog. Phys.62, 859 (1999).
Authors
S. Takeyama, D. Nakamura, H. Sawabe, Y. H. Matsuda, and A. Ikeda.

Determination of “Diracness” in PbTe
Tokunaga Group

Fig. 2. Magnetic field intensity recorded up to 1200 T with an evolution of time. Upper panel: Faraday rotation signal (VFR) synchronizedwith the magnetic field intensity. The dotted line taken from the pickup
coil (BPC), measured up to 600 T, and the green solid line measures thefields up to 1200 T by FR (BFR). The liner imploding images are shownby black circles. The estimated liner inner diameter at each magnetic
field intensity is given in axis of abscissa.

50-mm length) undergoes high-speed implosion (above
5 km/s) accelerated by the magnetic force induced by ahuge electric current injected to the primary coil (3–4 megaAmpere) about its circumference, and the magnetic flux
(3.2 T) initially generated in a large volume (diameter 120
mm, length 50 mm) is compressed finally into a small
space (3 mm diameter, 20–30 mm length), and reaches amegagauss magnetic field of up to 1200 T. The CL coil was
designed to improve the energy transfer efficiency of the
imploding liner. The copper lining part bears the current,
whereas the massive outer steel coil holds the inertia for theliner acceleration. A liner vacuum chamber with measurement probes are attached to the steel outer coil as shown in
Fig. 1. Thus, measurement probes are set precisely at theliner implosion center with respect to the CL coil.
The signals obtained in this work are plotted in Fig. 2.
Details are provided in our recent paper [4]. The dottedline is a signal taken from the pickup coil and traced up to
600 T, which is the limit of recording because of the highvoltage induced by the rapid increase of the field. The
Faraday rotation signal was intact until the very end of theliner implosion. The green solid line represents the fieldrecord after the Faraday rotation signal is converted into themagnetic field intensity. A slow-down effect was observed
followed by the peak field prior to the liner “turn-around”
phenomenon. Circles depicted in the graph shows imagesof the liner cross-section during implosion. The liner innerdiameter, which corresponds to the bore of the coil, is shown
as a guide in the axis of abscissa in the middle of the figure.
Final diameter of the liner at 1200 T is estimated to be
3 mm. The maximum speed of the liner during the implosion
is estimated to be higher than 5 km/sec, which is consistent
with the “Hugoniot curve” [5], in which a field of 1200 T
hits at 5.3 km/sec.
References[1] N. Miura and F. Herlach, Springer Topics in Applied Physics 57,
247 (Springer, Berlin, 1985).

One of the hottest research subjects in condensed matterphysics is so-called topological materials, in which dynamics
of charge carriers are expressed by the relativistic equationsof motion that are utilized in research field of high energy
physics. Since the relativistic Dirac/Weyl equations show
characteristic linear dispersion relation, a great number ofexperimental and theoretical studies have been devoted to
explore the linear dispersion as schematically shown in Fig.
1(a), which is distinguished from the parabolic one shownin Fig. 1(b). This parabolic dispersion, however, is merely
the expanded view of the trace in Fig. 1(a) at around theorigin. Therefore, argument based only on the appearance ofthe dispersion is sensuous and insufficient to quantitatively
distinguish the Dirac/Weyl system from the others. As theFig. 1. (a) Schematic dispersion relation of kinetic motion of particles
that is expressed by relativistic Dirac equation, which shows characteristic linear dispersion in wide range of the k-space. (b) Expanded view
the same dispersion relation with that in (a), which appears as parabolicin this region.

Fig. 2. (a) Transverse magnetoresistance and (b) ultrasound attenuationin single crystals of PbTe. Quantum oscillations are clearly resolved inboth experiments.

ISSP Activity Report 201825

quantitative indicator that characterizes similarity of a systemwith the ideal Dirac system, which is called as “Diracness”
in the following, we focus on the ratio between Zeeman andcyclotron energies (ZC ratio). Recent theoretical studies
revealed that this ZC ratio becomes unity for the ideal Diracsystem [1,2]. Relative magnitude of the ZC ratio and unity is
predicted to invert when topology of a material changes fromtrivial to non-trivial.
To experimentally determine the ZC ratio, we studied
quantum oscillations in single crystals of PbTe throughmeasurements of magnetoresistance (Fig. 2(a)), magnetization, and ultrasound attenuations (Fig. 2(b)) in DC andpulsed high magnetic fields [3]. By measuring quantum
oscillations up to the quantum limit state and comparing theresults with the standard Lifshitz-Kosevich formula [4], we
determined the ZC ratio of PbTe as 0.52. In this analysis, weclarified that when the ZC ratio becomes larger than one half,
peak-dip relation in the quantum oscillation will be reversed,
which will appear as the phase shift in the Landau level fan
diagram. The results demonstrate that observation of spinsplit quantum oscillations is crucially important to discuss
the origin of the phase shift.
References[1] Y. Fuseya et al., Phys. Rev. Lett. 115, 216401 (2015).
[2] H. Hayasaka and Y. Fuseya, J. Phys.: Condens. Matter 28, 31LT01(2016).
[3] K. Akiba et al., Phys. Rev. B 98, 115144 (2018).
[4] D. Shoenberg, Magnetic Oscillations in Metals (Cambridge University Press, 1984).
Authors
K. Akiba, A. Miyake, H. Sakaia,b, K. Katayamaa, H. Murakawaa,
N. Hanasakia, S. Takaokaa, Y. Nakanishic, M. Yoshizawac, and M.
Tokunaga
aOsaka University
bJST-PRESTO
cIwate University

Fig. 1. (a) The lattice model of volborthite (b) Coupled trimer model
for volborthite (c) A schematic drawing of the pantograph-like latticemodification of the magnetostriction in the crystallographic b axis.

Owing to the lattice deformation, the anisotropic microscopic
spin model based on coupled trimers as shown in Fig. 1(b)has recently been proposed, that now attracts attention as itprovides a mechanism for a field-induced spin nematic phaseadjacent to the 1/3 magnetization plateau. In the spin nematic
phase, spin directors that break the in-plane rotational
symmetry are formed as a result of the Bose-Einsteincondensation of bimagnon excitations. The rotational
symmetry breakings take place in the lateral direction of thespin space, which thus implies that the measurement of thelateral spin-correlation in this magnet is quite important.
Figures. 2(a)-(c) shows the result of the magnetostriction

Short-Range Spin Correlations in a
Quantum Magnet Detected ThroughMagnetoelasctic Couplings in a Kagome
Quantum Spin LatticeY. H. Matsuda, Takeyama, and Hiroi Groups
In case of quantum magnets, magnetostriction can be aunique measure of short-range spin correlations. The spincomponents perpendicular to the external magnetic field isinherent in the local spin correlation. In quantum magnets,
magnetostriction measurement is a direct measure of thelocal spin correlation.
We have recently developed a high-speed 100 MHz
magnetostriction measurement system utilizing the fiber
Bragg grating techniques [1] for the use in the µ-seconds
pulsed magnetic fields beyond 100 T (megagauss region) and1000 T (kilo-Tesla region) [2]. We found later that the system
can also be used in the milli-seconds pulsed magnetic fields
below 100 T with an appreciable high-resolution of ΔL/L ~10-6 [3]. Using the developed instrument, we have conducted
the magnetostriction measurement for the two-dimensional
quantum magnet of volborthite [4].
Volborthite (Cu3V2O7(OH)2 · 2H2O) is a fascinating
example of a highly frustrated quantum magnet. In its
magnetic layer, Cu ions possessing spin-1/2 moments form adeformed kagome lattice as schematically shown in Fig. 1(a).

26ISSP Activity Report 2018

Fig. 2. (a) Magnetostriction curves of volborthite (b) Magnetization
curves of volborthite (c) A comparison of the curves of magnetostriction and magnetization indicating a peculiar dependence of ΔL~M1.3.

measurement. A negative magnetostriction and a peculiar
dependence of the magnetostriction on the magnetization
as ΔL ~ M1.3 are observed. The negative magnetostriction in the crystallographic b axis is understandable with apantograph-like lattice modification. As shown in Fig. 1(c),the Cu-O-Cu chain in the b axis is responsible for the ferromagnetic superexchange interaction in the coupled trimer
model. The closer the bond angles to 90 degree, the stronger
the ferromagnetic exchange couplings due to the KanamoriGoodenough rule, where, as a result, the bond length in theb axis is elongated. The story is supported by a tentative
DFT+U calculations [4]. On the other hand, the peculiar
dependence of the magnetostriction on the magnetization canalso qualitatively understood as a manifestation of the shortrange spin correlation within the exchange striction model.
In the exact-diagonalization approach, it becomes clear thatthe spin-correlation is indeed in between the M1.0 and M2.0
and close to M1.3. For further studies in the future, the spinnematicity may show abnormal magnetoelastic response ateven lower magnetic fields at around 28 T. Another possible
study is the measurement beyond 100 T. The end of the 1/3
magnetization plateau may be detected in the magnetostriction measurement.
References[1] A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi,
H. Watanabe and K. Sato, Rev. Sci. Instrum. 88, 083906 (2017).
[2] D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda, and
S. Takeyama, Rev. Sci. Instrum. 89, 095106 (2018)[3] A. Ikeda, Y. H. Matsuda, and H. Tsuda, Rev. Sci. Instrum. 89,
096103 (2018).
[4] A. Ikeda, S. Furukawa, O. Janson, Y. H. Matsuda, S, Takeyama, T.
Yajima, Z. Hiroi, and H. Ishikawa, Phys. Rev. B 99, 140412(R) (2019).

Fig. 1. (a) Atomic structure, and two-dimensional Brillouin zone of a
HB sheet. (b) Calculated band structure. (c) Wave function distributionof the α1-, α2-, α3-, and α4-states. The color of wave functions corresponds to the sign of the periodic part of Bloch wave functions.

Authors
A. Ikeda and Y. H. Matsuda

Semi-Metallicity of Free-Standing
Hydrogenated Monolayer Boron from MgB2
I. Matsuda Group
Two-dimensional monatomic layers in van der Waals
crystals or on solid surfaces have wide attention because of
their unique physical properties and potential applicationsin quantum devices. There has been growing interests inlayers of Xenes. Recently, borophene layers were discovered
and found to have Dirac fermions. However, in contrast tographene, these Xene layers form only on solid surfaces. It
is, thus, necessary to develop technique to passivate it chemically so it can be placed on any substrate under ambientconditions.
In the present research, we synthesized a free-standinghydrogenated monolayer boron (HB) sheet and studied theelectronic states via soft X-ray spectroscopy at the B K-shellabsorption edge and the first-principles calculations [1]. As
shown in Fig.1, the HB sheet is semi-metallic with electron
and hole pockets at symmetry points of Γ and Y, respectively.
The electron band results from the B-H-B bonds formed
during synthesis from a MgB2 crystal, while the hole band is
kept through the process and originates from a honeycomb
lattice boron layer or borophene in MgB2. Figure 2 showsa summary of the calculation for a MgB2 crystal. One canfind the one-to-one correspondence between wave-functionsof the α1-state in HB and the δ2-state in MgB2. The present
research reveals a relation between the surface treatment

Fig. 2 (a) Atomic structure, and three-dimensional Brillouin zone ofa MgB2 crystal. (b) Calculated band structure. The red dots are theprojected band structure of MgB2 on B atoms. “DP” indicates Diracpoint. Dirac points shown in (b) are “cross sections” of Dirac Nodal
Loop. (c) Wave function distribution of the δ1-, δ2-, and δ3-states.
In (c), the color of wave functions corresponds to the sign of wave
functions.

of monatomic layer and evolutions of the two-dimensional
states, giving clues to design novel functional layers.
Reference[1] I. Tateishi, N. T. Cuong, C.A.S. Moura, M. Cameau, R. Ishibiki,
A. Fujino, S. Okada, A. Yamamoto, M. Araki, S. Ito, S. Yamamoto, M.
Niibe, T. Tokushima, D.E. Weibel, T. Kondo, M. Ogata, and I. Matsuda,
Phys. Rev. Materials 3, 024004 (2019).

ISSP Activity Report 201827

Authors
I. Tateishia, N. T. Cuongb, M. Niibec, T. Kondob, M. Ogataa, andI. Matsuda
aThe University of Tokyo
bUniversity of Tsukuba
cUniversity of Hyogo

Interfacial Carrier Dynamics of Grapheneon SiC, Traced by the Full-Range
Time-Resolved Core-Level Photoemission
Spectroscopy at SPring-8 BL07LSU
I. Matsuda Group
Time evolutions of the Dirac Fermions in graphene layers
have attracted both academic and technological interests
due to observations of the various intriguing opto-electric
phenomena, such as carrier multiplications and generation of a terahertz laser. Nowadays, graphene layers canbe epitaxially grown on a SiC substrate in wide area andsuch non-equilibrium carriers in the Dirac bands have been
directly probed by time-resolved photoemission spectroscopy. On the other hand, the previous studies focused only
on electronic evolutions within a graphene layer and little
examination was made on carrier dynamics through thegraphene/substrate interfaces. Unveiling dynamic roles of
the graphene/SiC interface is necessary to understanding the
opto-electric properties in SiC based detectors, for example.
In the present research, we conducted measurements oftime-resolved core-level photoemission spectroscopy by
a combination of laser and synchrotron radiation [1]. The
experiment was performed at SPring-8 soft X-ray beamline
BL07LSU with the beamline laser station, BL07LASER.
Figure 1 shows temporal variations of peak positions of C
1s and Si 2p during relaxation of the surface photovoltage
effect, induced by the optical pumping with a laser pulse.
Two C 1s components are assigned to a graphene layer(G) and a SiC substrate (SiC), while one Si 2p component
originates from a SiC substrate. Thus, the high-resolution
core-level spectra selectively distinguish dynamical information between overlayer and substrate. While the wholerelaxation of the electron-hole recombination process takes
100 nanoseconds, one can also find difference in temporal

Fig. 1. Time-resolved photoemission spectra for (a) C 1s and (b) Si 2p
core levels of graphene layers on the SiC substrate. In (a), graphenepeaks (labeled G) and SiC peaks (labeled SiC) were distinguishably
observed. The spectral energy shift measured from the laser OFF was
extracted and shown as a function of time for (c) C 1s and (d) Si 2p
core levels.

28

ISSP Activity Report 2018variation between C and SiC in the subnanosecond region.
This is because carrier lifetime in the graphene layers takelonger than that of the typical interface-state of SiC by thebottleneck effect of Dirac cones. When there is a buffer layer
between graphene and SiC, electron-hole recombination isdominantly held at the interface and the lifetime shortens
one-order of the magnitude [1]. The selective evaluations ofcarrier dynamics in non-uniform samples, such as heterojunctions, allow one to design and develop novel optoelectric
devices.
Reference[1] T. Someya, H. Fukidome, N. Endo, K. Takahashi, S. Yamamoto,and I. Matsuda, Appl. Phys. Lett. 113, 051601 (2018).
Authors
H. Fukidomea, S. Yamamoto, and I. Matsuda
aTohoku University

Polarization Resolved High
Harmonic Generation in
Semiconducting Gallium Selenide
Itatani Group
Recent progress in ultrafast laser technology has realized
to produce strong optical fields in the mid-infrared toterahertz spectral regions. Emergence of such intense longwavelength light sources triggers ultrafast strong-field
physics for condensed matters. When crystalline materials
are irradiated by intense mid-infrared pulses, for example,
extreme ballistic oscillation of electrons in a conduction bandwith terahertz to petahertz frequencies occurs, and high-orderharmonics are often produced beyond a typical bandgap ofsolids. So far, most of the experiments employ one-dimensional study along a specific direction. However, we showthat a one-dimensional model is not suitable to investigate

Fig. 1. Polarization resolved measurement of the crystallographic
orientation dependence of high harmonics generated in GaSe with ahigh field amplitude of 10 MV/cm. Parallel (a, visible; c, infrared) andperpendicular (b, visible; d, infrared) polarization components of thehigh harmonics. Curve plots of the parallel third (e), perpendicular third(f), parallel fifth (g), and perpendicular fifth (h) harmonics.

polarization property of HHG in solids.
In this study, we investigate polarization properties ofhigh harmonics produced in a 30-µm-thick gallium selenide(GaSe, ε-type, [001] z-cut, hexagonal structure, non-coat).
The crystal is exposed to linearly polarized femtosecond
mid-infrared pulses with a field amplitudes of ~10 MV/cm
that are produced from a dual-wavelength optical parametricamplifier (wavelength: 5 µm, maximum pulse energy:
15 µJ, pulse duration: 200 fs, repetition rate: 1 kHz) [1]. The
crystallographic orientation dependence of high harmonic
spectra is measured after a set of wire-grid polarizers in theeither parallel (Fig. 1(a), (c), (e), and (g)) or perpendicular(Fig. 1(b), (d), (f), and (h)) to the mid-infrared field. The
observed high harmonics are extended up to the 11th order(2.70 eV, 460 nm) beyond the bandgap (1.98 eV, 625 nm).
All even harmonics for both polarizations show modulations with 60° periodicities, which is consistent with the
hexagonal structure of a GaSe crystal. In contrast to the evenharmonics, the parallel and odd harmonics show 60° modulation on top of a constant offset as in Figs. 1 (e) and (g) for
the third and fifth harmonics, respectively. More surprisingly,
the perpendicular odd harmonics appear with 30° periodicity
as can be seen in Figs. 1(f) and (h). This 30° periodicity
cannot be intuitively understood from the hexagonal structure of the crystal.
To explain these results, a two-dimensional single-bandmodel described by the Bloch theorem is used [2]. Thismodel assumes that (i) the intraband current dominates
odd harmonics and (ii) the electron wavepacket is launchedaround the Г point. Detailed explanation of the model and averification of these assumptions can be found in Ref. [3].
We found that the band curvature (Figs. 2 (b) and (c)) of thelowest conduction band (Fig. 2(a)) along the electron trajectory is responsible for the source of odd-order harmonics.
Based on the two-dimensional single-band model, theparallel and perpendicular odd harmonics are calculated toshow 60° and 30° periodicities as can be seen in Figs. 2(d)and (e), respectively. These results well reproduce the experimental observations of the orientation dependences and thepolarization property for all odd harmonics.
In summary, we have investigated a polarization propertyof high harmonics from a bulk GaSe crystal using femtosecond MIR pulses and their dependence on crystallographic
orientation. With the 10 MV/cm electric field, the perpendicular odd harmonic emerges with a periodic modulation of
30°, which cannot be explained by the perturbative nonlinear
optics. The underpinned physics of the perpendicularcomponent of the odd harmonics is attributed to anisotropic momentum dependence of the band curvature along
the electron trajectory, which is equivalent to the inverse
effective mass. Our demonstration establishes a direct link
between the band structure and HHG in a crystalline solid.
Multi-dimensional analysis combined with time-resolved
measurement allows to investigate electron dynamics andfield-dressed structure of energy bands in future.
References[1] K. Kaneshima, N. Ishii, K. Takeuchi, and J. Itatani, Opt. Express
24, 8660 (2016).
[2] S. Ghimire, A. D. DiChiara, E. Sistrunk, P. Agostini, L. F. DiMauro,and D. A. Reis, Nature Phys. 7, 138 (2011).
[3] K. Kaneshima, Y. Shinohara, K. Takeuchi, N. Ishii, K. Imasaka,
T. Kaji, S. Ashihara, K. L. Ishikawa, and J. Itatani, Phys. Rev. Lett.
120, 243903 (2018).
Authors
K. Kaneshima, Y. Shinoharaa, K. Takeuchi, N. Ishii, K. Imasakab,
T. Kajib, S. Ashiharab, K. L. Ishikawaa, c, and J. Itatani
aPhoton Science Center, School of Engineering, The University ofTokyo
bInstitute of Industrial Science, The University of Tokyo
cDepartment of Nuclear Engineering and Management, School ofEngineering, The University of Tokyo

Fig. 2. Calculated results by the two-dimensional single-band model.
(a) Lowest conduction band of GaSe and its band curvatures. (b) theband curvature component responsible for parallel odd harmonic
generation. (c) the other band curvature component responsible for
perpendicular odd harmonic generation. Three electron trajectories at φ
= 60° (solid black arrows), 45°(dash), and 30°(dot) are illustrated. The
maximum amplitude of electron trajectories with an electric field of 10
MV/cm is shown by the black circle. Orientation dependence of the (d)parallel and (e) perpendicular harmonics obtained by the two-dimensional single-band model with the 10-MV/cm electric field.

ISSP Activity Report 2018

29

Joint Research Highlights
Spin Injection from a Ferromagnetic
Insulator into a Superconductor
M. Matsuo and T. Kato
Spin injection from a ferromagnetic metal into a superconductor (SC) has been investigated for a long time. For
conventional s-wave superconductors, spin injection issuppressed by a SC energy gap. Thermally excited quasiparticles in SC, however, can carry injected spins over long
distances, as spin excitations in SCs have long lifetimes.
Several novel techniques for spin injection have been developed so far. For example, the spin injection can be realized
by the spin Seebeck effect under a temperature gradient, orby applying a spin pumping protocol using ferromagnetic
resonance (FMR) under microwave irradiation.
Recently, spin injection from a ferromagnetic insulator(FI) into a SC has also been performed [1]. Although thisstudy opens up possible applications for novel superconducting spintronic devices using FI, spin injection from a FI
has been studied theoretically only in Ref. [2] in the context
of the damping in the FMR experiments. In the present study[3], we considered a bilayer system composed of a s-wave
singlet SC and a FI as shown in Fig. 1(a), and calculated
the spin current induced by the spin Seebeck effect or spin
pumping, using the perturbation theory with respect to theinterface exchange interaction.

In Fig. 1(b), we show the temperature dependence of thespin current induced by spin pumping. Here the temperatureof the bilayer system and the spin current are normalized by
the SC transition temperatures TC and the spin current for anormal metal, respectively. For small excitation frequency
Ω, the spin current is enhanced below the SC transition
temperature due to a coherent factor in analogy with the
NMR measurement. For ħΩ < 2Δ(T = 0) ≈ 3.54kBTC, thespin current is strongly reduced at low temperatures (kBT ≪2Δ(T), because spin-flip excitations in the SC are suppressed
due to the energy gap 2Δ in the one-electron excitation
spectrum, where Δ(T) is the SC energy gap (a function of thetemperature T ). As Ω increases, the coherence peak becomesinsignificant, while there appears a kink at the temperaturesatisfying 2Δ(T) = ħΩ. For ħΩ > 2Δ(T = 0), the spin current
shows a plateau at a low temperature corresponding to its
zero temperature value, ultimately recovering the normal
state value (dashed line) as Ω increases further. We also
calculated the spin current induced by the spin Seebeck
effect (not shown here), and discussed the effect of the SC
transition.
For a realistic experimental setup, we estimated the noise
power of the pure spin current following the theory developed in Ref. [4]. We have shown that the nonequilibrium
spin-current noise in spin pumping experiments is muchlarger than the thermal noise at low temperatures, and thatboth noises show a coherent peak below the SC transition
temperature. Finally, we proposed a possible experimental
setup to measure the spin current and its noise obtained here,
utilizing the inverse spin Hall effect in SCs.
This study has been performed as a joint study extended
from the previous study [4] with Mamoru Matsuo, who wasa visiting professor of ISSP in the academic year 2016. This
study has also been performed as a collaborated projectwith the French group (the leader is Thierry Martin at Aix
Marseille Univ., CPT, Marseille).
References[1] M. Umeda et al., App. Phys. Lett. 112, 232601 (2018).
[2] M. Inoue, M. Ichioka, and H. Adachi, Phys. Rev. B 96, 024414(2017).
[3] T. Kato, Y. Ohnuma, M. Matsuo, J. Rech, T. Jonckheere, and T.
Martin, Phys. Rev. B 99, 144411 (2019).
[4] M. Matsuo, Y. Ohnuma, T. Kato, and S. Maekawa, Phys. Rev. Lett.
120, 037201 (2018).
Authors
T. Kato, Y. Ohnumaa, M. Matsuoa, J. Rechb, T. Jonckheereb, and T.
MartinbaKavli Institute for Theoretical Sciences, University of Chinese
Academy of Sciences
bAix Marseille Univ, Université de Toulon, CNRS, CPT

Fig. 1. (a) A schematic of the bilayer system composed of a superconductor (SC) and a ferromagnetic insulator (FI). (b) The temperaturedependence of the spin current induced by spin pumping under microwave irradiation. The curves correspond to ħΩ / kBTC =0.1, 0.5, 1, 1.5,
and 2 from the top to the bottom.

30

ISSP Activity Report 2018

Turning a Graphene into a TopologicalInsulator with Surface Decoration
J. Haruyama, S. Katsumoto, and T. Nakamura
Graphene once played a key role in the development of
topological insulators, which exhibit an electrically inert
interior yet form metallic states at their boundary (the edge
states). Kane and Mele, in 2005, predicted that coupling
between the spin and orbital motion of electrons turns
graphene (or some honeycomb lattice) into a ‘quantum-spinHall (QSH)’ insulator that hosts spin-filtered metallic edge
states with inherent resilience from scattering. These novel
edge states underlie tantalizing technological applications
for low-power electronics, spintronic devices, and faulttolerant quantum computing. Although graphene’s intrinsic
spin-orbit coupling is far too weak to produce an observable QSH phase in practice, numerous alternative platforms
were subsequently discovered, including HgTe and InAs/
GaSb quantum wells, WTe2, bismuthene, and the layered
compound Bi14Rh3I9.
Realization of the QSH effect in graphene devices
has remained an outstanding challenge dating back to theinception of the field of topological insulators. Graphene’s
exceptionally weak spin-orbit coupling—stemming fromcarbon’s low mass—poses the primary obstacle. We experimentally study artificially enhanced spin-orbit coupling ingraphene via random decoration with dilute Bi2Te3 nanoparticles. Remarkably, multi-terminal resistance measurementssuggest the presence of helical edge states characteristic ofa QSH phase; those magnetic-field and temperature dependence, X-ray photoelectron spectra, scanning tunnelingspectroscopy, and first-principles calculations further support
this scenario. These observations highlight a pathway
to spintronics and quantum-information applications ingraphene-based QSH platforms.

Fig. 1. Inset: AFM image of the sample. The vague dark regions
are fabricated graphene with fine particles. The yellow-colored regions
are Au electrodes. The blue squares indicate the current electrodes andthe white circles the voltage electrodes. At 1.5 K, with varing the backgate voltage, the resistance increases and hits 1/6 of the quanutm resistance, which is just expected for the configuration of the electrodes andperfect conductance connection between them.
References[1] K. Hatsuda, H. Mine, T. Nakamura, J. Li, R. Wu, S. Katsumoto, and
J. Haruyama, Sci. Adv. 4, eaau6915 (2018).
Authors
J. Haruyamaa, K. Hatsudaa, S. Katsumoto, and T. Nakamura
aAoyama-Gakuin University

Coexisting Two Types of Spin
Splitting Originating fromDifferent Orbital Symmetries
K. Yaji, S. Tanaka, and F. Komori
Spin degeneracy of conducting electrons in materials canbe lifted by spin-orbit interaction (SOI). Here, the symmetryof a surface or interface plays an important role in determining the spin splitting and texture of a 2D band. [1] In theframework of the Rashba model for a two-dimensional (2D)electron gas, a free-electron-like band dispersing from the Γpoint is shifted oppositely in the wave number direction by
SOI, depending on the spin direction that is perpendicular
to both the surface normal and momentum of the electron.
Another type of the spin-split band in the 2D system is called
the Zeeman type, where the spin direction is perpendicular to
the 2D plane without spin degeneracy at the symmetry pointin the wave-number space. In the case of the spin-split bandsof the surface 2D electron system with a three-fold latticesymmetry, either the Zeeman- or Rashba-type spin splitting
has been considered to appear around a K point exclusively
depending on the crystal symmetry. [1]We have found a novel spin-dependent band structureof a Sn triangular-lattice atomic layer (TLAL) at the K
point. The sample is formed by intercalation into the interface between graphene and the SiC(0001) substrate as aschematic model shown in Fig. 1(a). [2] At the K point of the
Sn TLAL with the symmetry of C3 according to the latticesymmetry p3m1, the Zeeman-type spin splitting is reason-

Fig. 1 (a) Atomic structure model of a Sn TLAL intercalated into thegraphene/SiC(0001) interface. (b) ARPES intensity image of the Sn
TLAL along ΓKSiC with overlaying the calculated band structure. The
color scale represents the photoelectron intensity, and gray (purple)
dashed curves the original (back-folded) bands. Two surface bands,
S1 and S2, and their back-folded bands, S1bf and S2bf, are marked.
(c) SARPES intensity images taken with the region including S2 andS2bf bands near EF surrounded by a thin rectangle in (b). The y-spin
polarization component is detected. The two-dimensional color scale
represents both the photoelectron intensity and the spin polarization. (d)The x, y, and z components of the spin-resolved spectra in the region
marked as l1 at K’SiCbf of S1bf band in (b).

ISSP Activity Report 201831

ably explained by the symmetry while the Rashba-type
band crossing is not expected. Using our spin- and angleresolved photoelectron spectroscopy (SARPES) with threedimensional spin detection [4] and He Iα (hν ~ 21.22 eV)radiation, both the Zeeman-type and Rashba-type spin splits
are confirmed at the K (K’) point as shown in Fig. 1(b-d). [4]The surface band S2 near EF exhibits a Rashba type inconsistently with the lattice symmetry, while the surface band S1
around 1.5 eV below EF is the Zeeman type as expected. It
should be noted that the photoelectron intensity for the backfolded band around the K’ point due to the graphene-lattice
scattering is stronger than that of the original one around the
K point in the present experiment conditions.
We have investigated the origin of the two types in the
Sn TLAL by evaluating the spin-resolved band structure
and charge distribution for the spin-split bands using density
functional theory calculations. The directions of the spinpolarization are well reproduced by the calculation as inFig. 2(a,b). The calculated charge distribution of the
Rashba-type (Zeeman-type) band at the K point, shown in
Fig. 2(c,d), corresponds to a C3v (C3) symmetry at the K
point. Theoretically, the C3v symmetry allows the Rashbatype band crossing regardless of the existence of the time

Fig. 2. (a,b) Spin polarization in the y (a) and z (b) directions for thebands around KSiC, where the opposite spin directions are indicatedby blue-red and green-purple colors, respectively. The diameter of thecircles is proportional to the total contribution of Sn 5s and 5p. (c,d)
Charge density distributions for the Zeeman-like spin-split band of S1(c) and the Rashba-like spin-split band of S2 (d) at the KSiC point. Left(right) panels represent top (side) views. In the left panels, the solid
parallelograms show the unit cell of Sn/SiC(0001)-(1 × 1). The dashedlines indicate the mirror planes of the charge density distribution.

32

ISSP Activity Report 2018

reversal symmetry. [1] The symmetry of the charge density
distribution, which is still a consequence of the crystal fieldpotential for the electrons, is a key to understand the natureof the spin splitting due to SOI.
References[1] T. Oguchi and T. Shishidou, J. Phys. Condens. Matter 21,092001(2009).
[2] S. Hayashi et al., Appl. Phys. Express 11, 015202 (2018).
[3] K. Yaji et al., Phys. Rev. Lett. 122, 126403 (2019).
[4] K. Yaji et al., Rev. Sci. Instrum. 87, 053111 (2016).
Authors
K. Yaji, A. Visikovskiya, T. Iimori, K. Kuroda, S. Hayashia, T.
Kajiwaraa, S. Tanakaa, S. Shin, and F. Komori
aKyushu University

Advanced First-Principles Simulationof Electrochemical Interfaces
S. Kasamatsu, I. Hamada, and O. Sugino
Electrochemical interfaces have long been attracting
attention as an environment for the interconversion ofchemical and electric energies, but the first-principles
simulation is not yet sufficiently matured because of the
difficulties in (i) achieving the accuracy required for the
reliable prediction and (ii) modeling the electric double
layers within the density functional theory (DFT). As a stepfor overcoming, we studied accuracy of the random phaseapproximation (RPA) for the exchange and correlation (xc)of electrons and then developed an ab initio Monte Carlo
method suitable for sampling the distribution of defects in anelectrode.
Hydrogen (H) on a platinum (Pt) surface, H/Pt(111), isa typical benchmarking system for which many theoreticaland experimental studies exist, but controversies still remain
even for the H adsorption problem: H is presumed to adsorb
on the fcc site based on indirect experiments and the conventional DFT simulations, while there exist several reports thatsignal from the top site can be observed spectroscopically.
Since the conventional DFT, which is based on the semilocal
approximation for the xc potential, was shown inaccurate
for the sorption problem on Pt(111), we have tried to use
more advanced xc potential called RPA [1]. The result of thecalculation accurately reproduced the experimental adsorp-

Fig. 1. Plot of the degree of conversion versus the temperature (T) andthe MgAl2O4 spinel structure (inset). Our calculation using 112-atomand 56-atom cells well reproduced the previous simulation based on acluster expansion model (CE-SPCM) in the whole range of T and also
the neutron experiment at higher T. First-principles sampling for solids
has thus made feasible.

tion energy although conventional DFT considerably overestimates it. Contrary to the conventional DFT, the DFT-RPA
predicts that difference in the energy between the fcc andtop sites is on the order of thermal energy at room temperature, i.e. kBTroom, suggesting coexistence of the fcc andatop hydrogens. This renewed picture on the H adsorption
explains why signal from the top site may be observed. We
believe this is an important step for true microscopic understanding of the hydrogen evolution reaction, which is one of
the most important fuel-cell reactions.
The fuel-cell reaction occurs efficiently on the Pt
electrode but the efficiency needs further improvement tomeet the demand of future technology. In this context, oxide
electrode (TiO2 or ZrO2) has attracted considerable attention as a beyond Pt material. By introducing impurities andoxygen vacancies, the oxides are made active for the fuelcell reactions. Theoretically, however, it has been extremely
difficult to model this system by sampling the distributionof defects for appropriate description of the space charge
layer; this is because of the large barrier existing between
different configurations of defects. The ab initio molecular
dynamics (MD) simulation is an established method forthe sampling but is generally inadequate for solids. In thiscontext, we have developed an ab initio Monte Carlo (MC)method of replica exchange type, which runs very efficiently
on massively parallel supercomputers. Our benchmark calculation on MgAl2O4 spinel shows that the degree of inversion,or the ratio of Al ions on Mg sites, is successfully sampled in
the temperature range studied [2] (Fig. 1). This is considered
as an important step for elucidation of the reason why theoxides so effectively activate the fuel-cell reactions.
References[1] L. Yan, Y. Sun, Y. Yamamoto, S. Kasamatsu, I. Hamada, and O.
Sugino, J. Chem. Phys. 149, 164702 (2018).
[2] S. Kasamatsu and O. Sugino, J. Phys.: Condensed Matter, 31,
085901 (2019).
Authors
L. Yan, Y. Yamamoto, S. Kasamatsua, O. Sugino, Y. Sunb, I. Hamadac
aYamagata University
bNational Institute for Materials SciencecOsaka University

Interfacial Hydrogen Bonding inProton-Electron Concerted 2D Organic
Bilayer on Au Substrate Probed bySoft X-Ray Spectroscopy

Fig. 1. Schematic structure of organic bilayer of H2Cat-BMT-TTF and
Im-SAM on Au. H2Cat-BMT-TTF consists of catechol and tetrathiafulvalene (TTF). Im-SAM has two kinds of N atoms: imino N (N3)and amino N (N1). H-bonds are formed between the imino N atoms in
Im-SAM (H+ acceptor layer) and OH groups in H2Cat-BMT-TTF (H+donor layer).

terminated alkanethiolate self-assembled monolayer(Im-SAM) on a Au surface (Fig. 1). In our previous study[2], the OH stretching vibrational modes of H2Cat-BMTTTF in the IR spectra showed a large red shift and substantial
broadening upon adsorption on Im-SAM, indicating that the
OH groups of H2Cat-BMT-TTF act as the H+ donor sites.
However, the counterpart H+ acceptor sites was not identified due to an overlap of vibrational peaks. Using near edge
X-ray absorption fine structure (NEXAFS) spectroscopy, we
succeeded in elucidating the nature of H-bonding at the H+
acceptor side (i.e., Im-SAM) because N atoms exist only in
the Im-SAM layer.
N K-edge NEXAFS spectra of Im-SAM on Au before
and after adsorption of H2Cat-BMT-TTF are shown in Fig.
2. NEXAFS experiments were carried out at soft X-ray
beam-line BL07LSU of SPring-8. For Im-SAM on Au, two
sharp peaks are observed at 400.0 and 401.8 eV, which are
ascribed to the N 1s→1π* transition of the imino N (N3)and amino N (N1) atoms, respectively, of the imidazole
ring in Im-SAM. Upon adsorption of H2Cat-BMT-TTF,
the π* peak of imino N (N3) shifts from 400.0 to 400.3 eV,
while that of amino N (N1) remains at the same energy. Theenergies of the π* peaks in NEXAFS are sensitive probes of
local chemical environments of specific atoms. The energy
shift of the π* peak of imino N (N3) suggests that the local
chemical environment of imino N is changed by intermo-

S. Yamamoto, H. S. Kato, and I. Matsuda
Recent developments in the molecular design of organic
materials have uncovered a variety of novel functional
properties. One of them is the coupling of proton dynamics
and electrical conductivity, which can only be achieved in
3D organic crystals. However, reduction of dimensionality
to 2D is essential in organic electronics application. In thefunctional materials group at ISSP, we aim to realize a 2D
organic bilayer with a novel “proton-electron” functionality
on a solid surface.
In this study [1], we prepared and characterized a 2D
organic bilayer with “proton-electron” concerted functionality on a solid surface. A “proton-electron” concertedorganic molecule, catechol-fused bis(methylthio)tetrathiafulvalene (H2Cat-BMT-TTF), was deposited onto an imidazole-Fig. 2. N K-edge NEXAFS spectra of Im-SAM on Au before and after
adsorption of H2Cat-BMT-TTF. (a) Raw data and (b) raw data withpeak fitting results.

ISSP Activity Report 201833

lecular H-bonding with H2Cat-BMT-TTF. The H-bonding
configuration between H2Cat-BMT-TTF and Im-SAM can be
discussed based on the quantitative analysis of the coverageof each molecule. The peak fitting of N K-edge NEXAFS
spectra in Fig. 2(b) reveals that the coverage of H-bonded
Im-SAM is 0.41 ML. This matches the coverage of H2CatBMT-TTF (0.4 ML), which was estimated by X-ray
photoelectron spectroscopy in our previous study [2]. This
indicates that H2Cat-BMT-TTF and Im-SAM forms H-bonds
in one to one fashion (Fig. 1).
In conclusion, the complete picture of H-bonding in thepresent organic bilayer was obtained; H-bonds form between
the imino N atoms (H+ acceptor sites) of Im-SAM and the
OH groups (H+ donor sites) of H2Cat-BMT-TTF. The present
work is a steady step toward the realization of 2D organic
functional materials, and the experimental methods adopted
herein will serve as powerful tools for the detection of theirfunctions.
References[1] S. Yamamoto, H. S. Kato, A. Ueda, S. Yoshimoto, Y. Hirata, J.
Miyawaki, K. Yamamoto, Y. Harada, H. Wadati, H. Mori, J. Yoshinobu,
and I. Matsuda, e-J. Surf. Sci. Nanotechnol. 17, 49-55 (2019).
[2] 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
S. Yamamoto, H. S. Katoa, A. Ueda, S. Yoshimoto, Y. Hirata, J.
Miyawaki, K. Yamamoto, Y. Harada, H. Wadati, H. Mori, J. Yoshinobu,
and I. Matsuda
aOsaka University

Structural, Magnetic, and Transport
Properties of Novel Quaternary Compounds
RRu2Sn2Zn18 (R = La, Pr, and Nd)
K. Wakiya, I. Umehara, and Y. Uwatoko
Cubic Pr-based intermetallic compounds are expected toshow various fascinating phenomena arising from multipole
degrees of freedom, when the crystal electric field (CEF)
ground state of Pr3+ ion is the non-Kramers Γ3 doublet.
This is because the Γ3 doublet possesses not a magnetic
dipole but electric quadrupoles and a magnetic octupole.
Recently, PrT2X20 (T: Transition metal, X = Zn, Al) with
the non-Kramers doublet ground state have attracted muchattention because they exhibit a coexistence of superconductivity with quadrupole ordering [1-4]. In addition, they
exhibit a non-fermi liquid behavior in the electrical resistivity
and specific heat [1-4]. It is theoretically suggested that thenon-Fermi liquid behavior is caused by the hybridizationof quadrupoles with conduction electrons [5]. However, inorder to increase our understanding of these phenomena, it isstill crucial to find a new Pr compound with the Γ3 doublet
ground state because the number of such compound islimited.
We recently focused on the isostructural compound
PrRu2Zn20 which shows a structural transition at TS = 138
K [6]. PrRu2Zn20 shows no quadrupole ordering because
the CEF ground state doublet is split into two singlets as aresult of the site symmetry lowering at the structural transition. In PrT2Zn20, there are three distinct Zn sites: 16c, 48f,
and 96g. Among these, Zn atoms at the 16c site [Zn(16c)] is
encapsulated by an R2Zn12 cage as shown in the inset of Fig.
1(a). A first principles calculation suggested that the large

34

ISSP Activity Report 2018

Fig. 1. (a) specific heat divided by temperature C/T and (b) magnetic
susceptibility χ (= M/B)of PrRu2Sn2Zn18. The inset of (a) shows thePr2Zn12 cage surrounding the Zn atom at the 16c site [Zn(16c)]. In
PrRu2Sn2Zn18, Zn atoms at the 16c site are fully replaced by Sn atoms.

cage space of R2Zn12 cage induces the structural transition[7]. For RT2X20 (R: Rare earth, T: Transition metal, X = Zn,
Al), the cage space is evaluated by subtracting the atomic
radius of the caged atom from the average distance between
the atoms forming the cage and the caged atom [8]. Recently,
in isostructural RT2Zn20 (R = La-Nd, T = Co and Fe), it wasreported that Zn(16c) can be fully replaced by the Sn atom[9]. This suggests that the structural transition in PrRu2Zn20
can be suppressed by the Sn substitution because the cagespace of the Pr2Zn12 cage is reduced by introducing the Sn
atom with a larger atomic radius into the 16c site. In thisstudy, we synthesized Sn-substituted PrRu2Zn20 using selfflux and melt growth methods in order to obtain a new cubic
Pr-based compound.
The single-crystal x-ray structural analysis for obtained
samples revealed that the Sn atoms selectively occupy the
16c site. Thus, the chemical formula of the obtained sample
can be described as PrRu2Sn2Zn18. Figure 1(a) shows the
specific heat divided by temperature, C/T, of PrRu2Sn2Zn18.
No anomaly due to a structural transition is observed in
C/T, suggesting that PrRu2Sn2Zn18 remains cubic even at
low temperatures. A broad peak at around 8 K is probably
attributed to a Schottky peak due to the CEF splitting. Below
3 K, C/T increases with decreasing temperature, implyingthat the magnetic entropy is released even below 3 K. Figure
1 (b) shows the magnetic susceptibility χ of PrRu2Sn2Zn18.
Below 10 K, χ shows a Van-Vleck paramagnetic behavior,indicating that the CEF ground state of PrRu2Sn2Zn18 is
non-magnetic. Since the Pr site has cubic symmetry, theJ multiplet of Pr ion with a total angular momentum of
J = 4 split into four multiplets; nonmagnetic Γ1 singlet andΓ3 doublet, and magnetic Γ4 and Γ5 triplets. Considering thatthe magnetic entropy is released even below 3 K, the CEF
ground state of PrRu2Sn2Zn18 should be a nonmagnetic Γ3
doublet.
In conclusion, we have grown a new quaternarycompound PrRu 2 Sn 2 Zn 18 . The structural transition in
PrRu2Zn20 can be suppressed by the Sn substitution. The
magnetization and specific heat measurements revealed
that the CEF ground state of PrRu2Sn2Zn18 is probably a Γ3
doublet. Therefore, PrRu2Sn2Zn18 is a promising material forstudying the exotic phenomena arising from the multipole
degrees of freedom.

References[1] T. Onimaru et al., Phys. Rev. Lett. 106, 177001 (2011).
[2] A. Sakai et al., J. Phys. Soc. Jpn. 81, 083702 (2011).
[3] K. Matsubayashi et al., Phys. Rev. Lett. 109, 187004 (2012).
[4] M. Tsujimoto et al., Phys. Rev. Lett. 113, 267001 (2014).
[5] A. Tsuruta and K. Miyake, J. Phys. Soc. Jpn. 84, 114714 (2015).
[6] T. Onimaru et al., J. Phys. Soc. Jpn. 79, 033704 (2010).
[7] T. Hasegawa et al., J. Phys. Conf. Ser. 391, 012016 (2012).
[8] Z. Hiroi et al., J. Phys. Soc. Jpn. 81, 124707 (2012).
[9] Y. Isikawa et al., J. Phys. Soc. Jpn. 84, 074707 (2015).
Authors
K. Wakiyaa, Y. Sugiyamaa, M. Kishimotob, T. D. Matsudab, Y. Aokib,
M. Ueharaa, J. Gouchi, Y. Uwatoko, and I. Umeharaa
aYokohama National University
bTokyo Metropolitan University

First-Principles Study ofAnomalous Nernst Effect on
Skyrmion Crystal Chern Insulator
F. Ishii, Y. P. Mizuta, and H. Sawahata
We are interested in how to achieve much higher thermoelectric conversion efficiency by effectively manipulating
electron-spin degree of freedom. As one possibility, we havebeen studying Berry-phase-mediated thermoelectric effects,
namely the contribution of the anomalous Hall conductivity (AHC) to thermoelectric power. What we target hereis the anomalous Nernst effect (ANE), which is a heat-toelectricity conversion observed in magnetic materials anddirectly related to AHC. We discussed AHC mainly driven byan effective magnetic field, Berry curvature, induced by spinorbit coupling and/or spin chirality.
We have so far found from computations on some models
that, in the so-called 2D Skyrmion crystal (SkX) phase,where skyrmions are crystallized in two dimensions, thecrystal-momentum component of effective magnetic fieldgives rise to the band structure that could generate large ANE
when chemical potential μ is properly tuned [1]. Although
this behavior was most clearly confirmed in the simplest
model of square SkX with single s-orbital per site, our subsequent computations on more realistic models of transitionmetal oxides also showed possible large ANE [2]. A sizable
transverse thermoelectric coefficient is predicted to arise, bymeans of first-principles calculations, in a SkX assumed on
EuO monolayer (Fig. 1(a)) where carrier electrons are intro-

Fig. 1. (a) Calculated spin structures for skyrmion of EuO monolayer
model. (b) Calculated band structure, (c) chemical potential dependenceof anomalous Nernst coefficients and (d) power factors. Results areshown for different values of temperature 100K and 300K. We assumed
the constant relaxation time τ = 10 fs.

duced upon a quantum anomalous Hall insulating phase ofChern number C = 2. This encourages future experiments topursue such an effect.
Figure 1 (b) shows the band structure of electron-doped
EuO monolayer. There is a narrow band gap of ~20 meV
between the valence band top and conduction band bottom.
The Chern number was calculated by integrating Berrycurvatures of Brillouin zone. The occupied two bands withChern number C = 2 are mainly composed of Eu 5d and 6s
characters. We have calculated anomalous Nernst coefficients N and pure Nernst coefficients N0 ≡ αxy /σxy [2] byusing semiclassical Boltzmann transport theory with constantrelaxation time, τ = 10 fs. The calculated chemical potential
dependence of Nernst coefficients N, pure Nernst coefficientsand power factor are plotted in Fig 1(c) and (d). The large
anomalous Nernst coefficients up to 60 μV/K and power
factor up to 70 μW/mK2 can be obtained.
Such N arises from the coexistence of large longitudinal
thermoelectric coefficient and large Hall angle ratio, realized
in the vicinity of a narrow band gap with Chern number
C = 2. This demonstrates a prototype of novel class of new
thermoelectric materials utilizing the nanoscale topologicalspin textures, motivating further studies including relevant
experiments. We concluded that the SkX and narrow-gap
Chern insulators could be candidate materials for thermoelectric applications.
References[1] Y. P. Mizuta and F. Ishii, Sci. Rep. 6, 28076 (2016).
[2] Y. P. Mizuta, H. Sawahata, and F. Ishii, Phys. Rev. B 98, 205125(2018).
Authors
F. Ishiia, Y.P. Mizutab, and H. Sawahataa
aKanazawa University
bOsaka University

Heavy-Fermion State in
Valence-Fluctuating Antiferromagnetic
Compound EuPt2Si2 under High
Magnetic Field and High Pressure
T. Takeuchi, Y. Ōnuki, and T. Kida
EuPt2Si2 crystallizes in the CaBe2Ge2-type tetragonal
crystal structure and is known as a valence-fluctuating
compound. From the χ(T) measurement of polycrystalline
samples, it is found that EuPt2Si2 orders antiferromagnetically at TN = 15 K. χ(T) at high temperatures follows theCurie-Weiss law with an effective magnetic moment of μeff =7.7 μB/Eu, indicating that the Eu ions are essentially divalent.
Here, μeff for the Eu2+ free-ion is 7.94 μB/Eu. On the other
hand, an unusual broadening of the Mössbauer resonanceline width is observed below about 100 K, suggesting thatthe valence is fluctuating and already deviates slightly
from divalent to trivalent at room temperature. One of the
intriguing findings for EuPt2Si2 is the -lnT dependence of
ρ(T) below T ≃ 100 K. In addition, the magnetic entropy ofSmag ≃ 0.6Rln8 below TN and the strongly enhanced γ ≃ 200
mJ/(K2·mol) suggest that a heavy-fermion state is realized at
low temperatures in EuPt2Si2.
To obtain more insight into the heavy-fermion featuresin EuPt2Si2, we grew single crystals of this compound andstudied the effects of a magnetic field as well as pressure onits magnetic properties.

ISSP Activity Report 201835

References[1] T. Takeuchi et al., J. Phys. Soc. Jpn. 87, 074709 (2018).
[2] W. Iha et al., J Phys. Soc. Jpn. 87, 064706 (2018).
Authors
T. Takeuchi a , T. Yara b , Y. Ashitomi b , W. Iha b , M. Kakihana b ,M. Nakashimac, Y. Amakoc, F. Hondad, Y. Hommad, D. Aokid,
Y. Uwatoko, T. Kidaa, T. Taharaa, M. Hagiwaraa, Y. Hagae, M. Hedob
T. Nakamab, and Y. Ōnukib
aOsaka University
bUniversity of the Ryukyus
cShinshu University
dTohoku University
eJapan Atomic Energy Agency

Fig. 1. High-field magnetization curves M(H) (left-hand scale) andrelative changes in the magnetoresistance Δρ/ρ0 for J // [100] (righthand scale) in magnetic fields applied parallel to the [100] and [001]directions at 1.4 K. The M(H) data below 7 T were measured in static
magnetic fields using a SQUID magnetometer at 2 K. The Δρ/ρ0 curves
below 14 T were measured using a superconducting magnet. Brokenlines for Δρ/ρ0 at high magnetic fields are guides to the eye.

Magnetoelectric Behavior from
Square Cupola Magnetic Unitsin High Magnetic Field
K. Kimura, Y. Kato, and A. Miyake

The single crystal of EuPt2Si2 shows two antiferromagnetic transitions at TN1 = 21 K and TN2 = 16 K. The -lnT
dependence of ρ(T) was observed in the temperature range
from TN1 to about 100 K, as observed in polycrystals. The
effect of magnetic field on the -lnT dependence of ρ(T) is
found to be very weak, with Δρ/ρ0 of only ~0.1% at μ0H= 8 T. Even at μ0H = 40 T, which was produced using apulsed magnet, Δρ/ρ0 amounted to only -20%, as shown in
Fig. 1. These results suggest that the Kondo-like behavior of
EuPt2Si2 is rather stable against the application of magnetic
field, which is in contrast to the Ce-based heavy-fermion
compounds.
On the other hand, the pressure markedly shifts the -ln T
dependence of ρ(T) to higher temperatures, and TN1 is gradually decreased and suppressed to zero above P ≃ 4 GPa, as
indicated in Fig. 2. From the comparison of the observed
magnetic, electronic, and thermal properties of EuPt2Si2 withthose of the well studied EuCu2(Ge0.4Si0.6)2,[2] the anomalous features observed below 100 K in ρ(T), S(T), and ΔV/V
for EuPt2Si2 are most likely to be due to the valence fluctuation of the Eu ions. As a future problem, X-ray absorption
and Mössbauer experiments are desirable to confirm thetemperature dependence of the Eu valence in EuPt2Si2.

A particular class of magnetic order with broken spaceinversion and time-reversal symmetries has recently attracted
considerable interest because it can exhibit symmetrydependent unique phenomena, such as linear magnetoelectric(ME) effects and associated nonreciprocal optical responses.
In exploring such a magnetic order, a material composedof inversion asymmetric magnetic units is fascinating,because structural asymmetry of the unit may stabilize anontrivial non-coplanar spin arrangement due to asymmetric
Dzyaloshinskii-Moriya (DM) interactions, which would
lead to various magnetoelectric responses. Recently, we
have synthesized new antiferromagnetic insulators A(TiO)
Cu4(PO4)4 (A = Ba, Sr, and Pb), which consists of Cu4O12
convex-shaped magnetic units known as square cupola[Inset of Fig. 1(a)] [1-4]. Their crystal structure belongs toa tetragonal space group P4212 and is characterized by alayered arrangement of Cu4O12 square cupolas. Interestingly,
neutron diffraction study [2] reveals that below the antiferromagnetic ordering temperature TN, four Cu2+ spins of eachsquare cupola forms a magnetic quadrupole moment, which,along with magnetic monopole and toroidal moments, isknown as one of cluster multipole moments that satisfy thesymmetry condition for the linear ME effect. Indeed, we
observed a magnetic-field-induced electric polarization in
the Pb system and a sharp dielectric anomaly at TN in the Ba
and Sr systems. (The difference originates from a stacking
manner of magnetic layers: the quadrupole moments stackferroically in the Pb system, while antiferroically in the Ba

Fig. 2. Comparison of the P–T phase diagrams for EuPt2Si2 andEuCu2(Ge0.4Si0.6)2, cited from Ref. [2]. The P–T phase diagram for
EuCu2(Ge0.4Si0.6)2 was obtained by the resistivity measurements for
J // [100] under pressures. PCC, BAC, and CAC denote piston cylindercell, Bridgman anvil cell, and cubic anvil cell.

Fig. 1. Magnetic field dependence of magnetization (M) and electric
polarization along the c axis (Pc) obtained in (a) and (b) experimentsand (c) and (d) theoretical calculations for Pb(TiO)Cu4(PO4)4 (see Ref.
[5] for details). The magnetic field was applied along the [110] axis.
The inset of (a) shows a Cu4O12 square cupola magnetic unit.

36

ISSP Activity Report 2018

The present results thus demonstrate that Cu4O12 squarecupolas are promising ME active structural units in a broad
range of a magnetic field. Distinct types of ME-active multipole moments can appear in different phases. The convex
shaped geometry of Cu4O12 square cupolas plays an important role for the onset of such ME active multipole moments.
This implies that not only the square cupola unit, but also
other types of convex-shaped structural units are worth to be
explored for new magnetoelectric materials.

Fig. 2. Magnetic field dependence of magnetization (M) and dielectric
constant along the c axis (εc) obtained in (a) and (b) experiments and(c) and (d) theoretical calculations for Sr(TiO)Cu4(PO4)4 (see Ref. [6]for details). The magnetic field was applied along the [110] axis.

and Sr systems.) These results demonstrate that magnetic
square cupolas are promising ME-active structural units inthe low magnetic field (B) quadrupole phase. However, their
ME activity in a B-induced phase, which appears commonlyin these materials above 10 T, has not been elucidated. In thisstudy, we have investigated ME properties in the B-induced
phases of the Pb [5] and Sr [6] systems.
Figures 1(a) and 1(b) show a B-dependence of electric
polarization along the c axis (Pc) in the Pb system, together
with magnetization along the [110] axis (M[110]) for comparison. The B along the [110] direction (B[110]) was appliedwith use of a pulsed magnet. It is observed that Pc develops
upon the onset of the B-induced phase at 16.4 T. A clear PE
hysteresis loop was observed at steady B of 18 T, confirming
the ferroelectric nature. Moreover, P[001] shows a B-induced
sign reversal around 35 T. On the basis of the space group
P4212 in the paramagnetic phase and the existence of finite
M[110] and Pc, a possible maximal magnetic point groupof the B[110]-induced phase is 2´, which supports a cluster
multipole moment composed of toroidal and magnetic
moments. Contrary to the Pb case, no finite Pc was observedin the B[110]-induced phase of the Sr system. Instead, as
shown in Figs. 2(a) and 2(b), a sharp peak in the dielectric
constant along the [001] axis (εc) appears at the transition
field of ~15.0 T. (εc was measured up to 18 T using a superconducting magnet.) Considering the antiferroic stackingof magnetic layers at a low B quadrupole phase, the B[110]induced phase of the Sr system is expected to be antiferroelectric with a staggered electric polarization along thec axis.
To understand the origin for the experimental results,
we have constructed a spin-1/2 effective model, in which a
DM interaction between neighboring spins due to convex
geometry is taken into account. As shown in Figs. 1(c) and2(c), this model well reproduces the experimental M curves
in both systems, which strongly supports the validity of ourmodel analysis. Next, we evaluated the B[110] dependenceof Pc in the Pb system and εc in the Sr system on the basisof the so-called exchange striction mechanism. As shown in
Figs. 1(c) and 2(c), the calculated Pc and εc are qualitatively
in good agreement with experimental results. The analysis
thus indicates that the exchange striction plays a prime role
for the ME behavior from Cu4O12 square cupolas in theB[110]-induced phase. Moreover, a cluster multipole decomposition was applied to the calculated spin arrangementof square cupolas. The result shows that both toroidal andquadrupole moments become finite in each magnetic layer.
This can explain the ferroelectricity and antiferroelectricity
along the c axis induced by B[110].

References[1] K. Kimura et al., Nat. Commun. 7, 13039 (2016).
[2] Y. Kato et al., Phys. Rev. Lett. 118, 107601 (2017).
[3] P. Babkevich et al., Phys. Rev. B 96, 214436 (2017).
[4] K. Kimura et al., Phys. Rev. B 97, 134418 (2018).
[5] K. Kimura et al., Phys. Rev. Mater. 2, 104415 (2018).
[6] Y. Kato et al., Phys. Rev. B 99, 024415 (2019).
Authors
K. Kimuraa, Y. Katob, K. Yamauchic, A. Miyake, M. Tokunaga,
A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara, S. Kimura d ,M. Toyodae, Y. Motomeb, and T. Kimuraa
aDepartment of Advanced Materials Science, University of TokyobDepartment of Applied Physics, The University of Tokyo
cISIR-SANKEN, Osaka University
dInstitute for Materials Research, Tohoku University
eTokyo Institute of Technology

Electric Dipole Spin Resonancein the Interacting Quantum
Spin Dimer System KCuCl3
S. Kimura, M. Matsumoto, and M. Akaki
The observation of optical transition from spin singlet
to triplet states by means of high frequency electron spinresonance (ESR) measurements is known as an advantageous tool to investigate the energy spectrum of quantum
spin gap systems, such as a Haldane system or a spin ladder,in high accuracy. The transition has been reported for manyspin gapped system, for instance Ni(C2H8N2)2NO2ClO4(NENP), CuGeO3 and SrCu2(BO3)2. However, the singlettriplet transition is, in principle, forbidden in magnetic dipole
transition, and therefore the origin of its finite transition
probability is not so clear at the moment.
Here we report on our recent high frequency ESR
study on the S = 1/2 interacting dimer system KCuCl3.
By measuring polarization dependence of the ESR signal,
we have clarified that the singlet-triplet transition in thiscompound is due to the electric dipole transition [1]. In
KCuCl3, spin dimers composed of two Cu2+ spins forma three dimensional network in the monoclinic crystal.
Reflecting this dimer structure, the ground state of thiscompound is the spin singlet state, and does not order down
to the lowest temperature. From the previous measurements,
two sets of the singlet-triplet transitions were observed [2].
The two sets of the singlet-triplet transitions are due to two
kinds of the crystallographically different dimers in the unit
cell of KCuCl3, which gives rise to superposition of two
kinds of the triplet excitation modes in the momentum space.
To determine the selection rules of the singlet-triplet transition, we have performed the high frequency ESR measurements by illuminating linearly polarized electromagnetic
wave to the sample.
Figure 1 shows the ESR signals from the singlet-triplet
transition in KCuCl3 in external magnetic fields parallel tothe b axis. Our experiment showed that both the lower and

ISSP Activity Report 201837

Emergent Transport Phenomena in
the Course of Multiple TopologicalTransitions in MnSi1-xGex
N. Kanazawa, Y. Tokura, and M. Tokunaga

Fig. 1. ESR signals of the singlet-triplet transitions in KCuCl 3,
observed in the Faraday and Voigt configurations. In the measurementsin the Voigt configuration, linearly polarized electromagnetic wave isilluminated to the sample. The ESR signals A and B come from thehigher and lower triplet excitation modes, respectively. The experimental result shows that both signals are electrically driven, and directions of the oscillating electric fields, which couples to A and B, areorthogonal each other.

higher energy triplet modes A and B couple with oscillating
electric fields of the electromagnetic wave. Furthermore, thedirections of the oscillating electric fields, which couple to
the A and B modes, are orthogonal each other. These behaviors are explained by the spin dependent electric polarization. Recent studies for magntoelectric multiferroic materials
revealed that the vector spin chilarity Si × Sj, which is anouter product of neighboring
spin, induces
an electric polar〜〜
ization P, as P = C (Si × Sj ), where C is a second rank tensor.
Coupling between this P and the oscillating electric fields
Ee-iωt can be regarded as a dynamical Dzyaloshinsky-Moriya(DM) interaction, oscillating with an angular frequency ω.
Because DM interaction has finite matrix elements between
spin singlet and triplet states, the electric dipole transition
between these states can occur. By taking into account thetwo-fold helical axis between the two dimers, the observed
characteristic selection rule of the singlet-triplet transitionis also explained. The electric polarization, generated by
S i × S j , can appear regardless of the local structuralsymmetry between the two spin sites. Therefore, electric
dipole spin resonance by the spin-dependent electric polarization is universal for spin gapped systems. It is possiblethat the singlet-triplet transitions that were previously
observed in various spin gapped materials are induced by thispolarization mechanism.
References[1] S. Kimura, M. Matsumoto, M. Akaki, M. Hagiwara, K. Kindo, and
H. Tanaka, Phys. Rev. B 97, 140406 (2018).
[2] H. Tanaka, K. Takatsu, W. Shiramura, T. Kambe, H. Nojiri, T.
Yamada, S. Okubo, H. Ohta, and M. Motokawa, Physica B 246-247,
545 (1998).
[3] H. Katsura, N. Nagaosa, and A. V. Balatsky, Phys. Rev. Lett.
95, 057205 (2005).
[4] T. A. Kaplan and S. D. Mahanti, Phys. Rev. B 83, 174432 (2011).
Authors
S. Kimuraa, M. Matsumotob, M. Akakic, M. Hagiwarac, K. Kindo and
H. TanakadaTohoku University
bShizuoka University
cOsaka University
dTokyo Institute for Technology

38

ISSP Activity Report 2018

Interplay between topological spin textures and conduction electrons produces giant effective magnetic field called
emergent magnetic field, leading to various electromagnetic
functionalities for next-generation memory devices andenergy-harvesting technology. Skyrmion and hedgehog spin
structures are representative examples, which show two- andthree-dimensional (2D and 3D) topological spin arrangements, respectively. Reflecting their topological properties,
distinct emergent field distributions and each characteristic
response are realized, i.e., flux-line- and monopole-likebehaviors in skyrmion and hedgehog systems.
By synthesizing alloys of skyrmion- and hedgehoghosting compounds (MnSi and MnGe), we investigate thetransformation process between skyrmion and hedgehog
spin textures, where new type of topological phase transition is expected. We also perform high-magnetic fieldmeasurements on Hall resistivity to unravel the emergent
field profiles upon complete unwinding those highlystable magnetic knots. Precise transport measurementswith μΩ-resistance resolusion were achieved by utilizing
non-destructive pulse magnets energized by capacitor banks
and a flywheel DC generator installed at International
MegaGauss Science Laboratory of Institute for Solid State
Physics (ISSP).
We have observed three different magnetic phases withvarying composition x in MnSi1-xGex. As shown in themagnetic phase diagrams (Fig. 1), each magnetic phaseexhibits a unique magnetic field value for the transition to
ferromagnetic state (approximately 1 T for 0 < x < 0.3, 10 T
for 0.3 < x < 0.7, and 20 T for 0.7 < x < 1), which is suggestive of the difference in topological property of the winding
spin texture. In particular, we identified a new type ofhedgehog lattice in MnSi1-xGex with intermediate composition x = 0.4 – 0.6, i.e., at the expected topological magnetictransition between the 2D skyrmion lattice (SkL) and the3D hedgehog lattice (HL). This magnetic state consists ofhedgehogs and anti-hedgehogs aligned in face-centeredcubic positions (Fig. 1). We also revealed emergent field
profiles characteristic to each magnetic state as topologicalHall effect (Fig. 2). There observed much difference inmagnitudes and H-dependence, again contrasting the three
topological phases.
In conclusion, we demonstrate the transitions among
distinct topological spin textures, namely 2D SkL and twoclasses of 3D HLs, which are simply induced by controlling lattice constant or chemical pressure. The present study

Fig. 1. (left) Variation of magnetic phase diagrams in MnSi1-xGex. The
three colors represent different topological magnetic phases. (right)
Schematic illustration of the new hedgehog lattice state identified inthis study.

Fig. 1. Schematic illustration of the helimagnetic-ferromagnetic transition driven by the lattice expansion/compression in the cubic perovskite
Sr1-xBaxCoO3.
Fig. 2. Representative profiles of topological Hall resistivity for threedifferent magnetic states (x = 0.2 for SkL, x = 0.6 for fcc HL, and x =0.8 for cubic HL).

suggests a new route for the direct manipulation of the spintexture topology. Furthermore, the established precise highfield transport measurement technique will contribute todetection of emergent electromagnetic fields appearing as
less-dissipative current and concomitant small resistancechange.
References[1] Y. Fujishiro, N. Kanazawa, T. Nakajima, X. Z. Yu, K. Ohishi, Y.
Kawamura, K. Kakurai, T. Arima, H. Mitamura, A. Miyake, K. Akiba,
M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsune, R. Arita, and Y.
Tokura, J. Phys. Soc. Jpn. 75, 043707 (2006).
Authors
Y. Fujishiroa, N. Kanazawaa, T. Nakajimab, X. Z. Yub, K. Ohishic,
Y. Kawamurac, K. Kakuraib,c, T. Arimab,d, H. Mitamura, A. Miyake, K.
Akiba, M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsunee, R. Aritaa,b,
and Y. Tokuraa,baDepartment of Applied Physics, the University of Tokyo
bRIKEN Center for Emergent Matter Science (CEMS)
cNeutron Science and Technology Center, Comprehensive Research
Organization for Science and Society (CROSS)
dDepartment of Advanced Materials Science, the University of Tokyo
eTohoku University

Ferromagnetic-to-Helimagnetic Transitionin Cubic Perovskites Sr1-xBaxCoO3
H. Sakai, M. Tokunaga, and S. Ishiwata
Helimagnets have recently attracted great interest interms of fundamental physics and (spin)electronic application, owing to their novel functions that simple ferromagnets
have never attained. Typical examples include spin-spiraldriven ferroelectricity in perovskite-type manganites andcurrent-driven motion of magnetic skyrmions in chiralmagnets. However, since the helimagnetic order originatesfrom several competing magnetic interactions, its emergenceis highly limited by strong constraints on the lattice and spin
systems.
Here we report the emergence of helimagnetism outof room-temperature ferromagnetism in simple cubic
perovskites Sr1-xBaxCoO3 by the negative chemical pressure(Fig. 1). By utilising a high-pressure technique, we havesuccessfully grown a series of single crystals with systematical chemical compositions. With the isotropic lattice expansion by Ba substitution, room-temperature ferromagnetism
for SrCoO3 is markedly suppressed, leading to incommensurate helimagnetism, while the simple cubic structure remains
intact. High-resolution neutron diffraction the Ba-substituted

compounds has revealed the helimagnetic correlation thatevolves towards low temperatures in competition with ferromagnetic one [1].
Figure 2(a) shows the temperature dependence of themagnetisation M at 0.01 T for Sr1−xBaxCoO3, measured
upon heating after a field cooling process. With increasingx from 0.1 to 0.35, the ferromagnetic Curie temperature
TC decreases systematically from 256 K to 176 K. For
x = 0.35, the increase in M below TC is largely reduced, andinstead a clear drop in M upon cooling manifests itself at TM(∼43 K). For x = 0.4, the ferromagnetic transition disappears
and the drop in M is more conspicuous. This corresponds
to the onset of the helimagnetic correlations as revealed by
the neutron diffraction experiments. To check the spin stateof Co4+ ions upon Ba substitution, we have also measured
the field profile of M at the lowest temperature (2−4 K)(Fig. 2(b)). For x = 0.1−0.3 with the ferromagnetic groundstate, the M value is saturated above ∼2 T, whereas thesaturation field is substantially enhanced with increasing x to
0.35, where the helimagnetic instability sets in. The value of
M barely saturates at above ∼30 T for x = 0.35. From these
data, we have found that the saturation moment is almost
constant (∼2.2−2.5μB/Co) with x up to 0.35 in spite of asignificant decrease in TC. The spin state thus appears toremain in a nearly intermediate, i.e., S = 3/2, configuration,
which is likely to be strongly hybridised with the ligand hole
states (see the inset to Fig. 2(b)).
Our results indicate that the subtle balance among themagnetic interactions can be controlled by the lattice size,i.e., bandwidth, which reflects the strong p-d hybridization inherent in the unusually high-valence Co4+ state. The
discovery of the helimagnetic order by expanding the simple

Fig. 2. (a) Temperature (T) profiles of magnetisation (M) at 0.01 T for
Sr1−xBaxCoO3 (0.1 ≤ x ≤ 0.4) single crystals. (b) Field dependence of
M at the lowest temperature (2-4 K) for x=0.1-0.4. The profiles up
to ∼40 T were measured with a pulse magnet. Inset shows schematic
diagram of intermediate spin configuration of Co4+. L denotes anoxygen ligand hole.

ISSP Activity Report 201839

cubic lattice provides a foundation for investigating theproperties of many other crystalline materials.
Reference[1] H. Sakai, S. Yokoyama, A. Kuwabara, J. S. White, E. Canévet,H. M. Rønnow, T. Koretsune, R. Arita, A. Miyake, M. Tokunaga, Y.
Tokura, and S. Ishiwata, Phys. Rev. Materials. 2, 104412 (2018).
Authors
H. Sakaia,b,c, S. Yokoyamaa, A. Kuwabaraa, A. Miyake, M. Tokunaga,
Y. Tokuraa, and S. Ishiwataa,caThe University of Tokyo
bOsaka University
cPRESTO, JST

Magnetic-Field-Induced Kondo Metal
State in the Kondo Insulator YbB12
F. Iga, Y. H. Matsuda, and Y. Kohama
The Kondo effect is one of the most intensively studied
many-particle correlation effects and induces intriguing
phenomena such as heavy fermions and characteristic behaviors of electrons in quantum dots. There are rare materials
in which insulating phases appear with development of
the Kondo effect at low temperatures and they are termed
Kondo insulator. Since most of the compounds with significant Kondo effect are metallic, the origin of formation of
the charge gap has been attracting attention for a long time.
Application of magnetic field (B) is expected to control theelectronic state of the Kondo insulator through the Zeeman
effect, and the magnetic field induced insulator-metal (IM)transition actually occurs in the prototypical Kondo insulator
YbB12 at around 50 T [1]. The properties of the high-field
metallic phase have never been well understood because themagnetic field required is rather high, which makes microscopic measurements difficult to perform.
Here we report on specific heat (Cp) measurements of
YbB12 in high magnetic fields of up to 60 T. The techniques
for measurements of specific heat in a pulsed magnetic field
have been developed recently [2] and applied to researchesof various kinds of materials. We found that the specific heat
sharply increases as the IM transition takes place around
50 T. This largely enhanced value of specific heat coefficient (Cp /T) strongly indicates that a large density of state(DOS) emerges at the Fermi energy and the electronic statecorresponds to the Kondo metal state with heavy mass quasi
particles.

Fig. 1. The plot of the Cp / T in the B-T plain with a color gradientscale. The Kondo metal phase appears in high magnetic fields.

40

ISSP Activity Report 2018

Fig. 2. Sommerfeld coefficient γ is plotted as a function of the magnetic
field. The jump of γ to a large value is a direct evidence of appearanceof a Kondo metal with heavy mass quasi particles.

Figure 1 shows a color plot image of the Cp /T in the B-T
plane. The Kondo metal state is found to appear in higher
field region. Using the relation Cp /T = γ + βT2, where thesecond term is due to phonon contribution with a constant β,
the Sommerfeld coefficient γ is deduced from the temperature variation of Cp. The deduced γ is plotted as a function of
the magnetic field in Fig. 2. A similar plot for β is shown in
the inset. The vertical dashed lines denote the magnetic field
where the IM transition takes place [3]. A distinct increaseof γ occurs along with the IM transition, and the γ at a highfield metal phase is 58 mJ/(mol K2) and 67 mJ/(mol K2) at
49 T and 60 T, respectively. Although β may also have finite
magnetic field dependence, it is relatively smaller than thelarge field-induced change in γ and can be ignored at low
temperatures. It is also interesting to note that the obtained γ
is as large as that in Kondo metals that exhibit strong valencefluctuations. For instance, γ is 50 mJ/(mol K2) in YbAl3 and130 mJ/(mol K2) in α-YbAlB4. YbAl3 is one of the typicalvalence fluctuation compounds, and α-YbAlB4 is the anisotropic heavy fermion compounds with significant valencefluctuations. From the value of γ, it is clearly concluded thatthe field-induced metal state in YbB12 is regarded as a Kondo
metal in the valence fluctuation regime [4].
We can evaluate the Kondo temperature T K in thehigh-field Kondo metal phase. The entropy S in the fieldinduced metal can be estimated from the degeneracy W of
the magnetic state of 4f electrons in trivalent Yb ions. The
ground state of the Yb3+ ions in the cubic crystal field in
YbB12 is Γ8 and the W is 4. The excited Γ6 and Γ7 doublets
are almost degenerated and located at a higher energy than Γ8by about 23 meV. Since the energy gap (15 meV) collapses
due to the Zeeman effect at the transition magnetic field andthis energy scale is comparable to the excitation energy of
the crystal field splitting (23 meV), the three Γ6,7,8 states
more or less mix each other in high magnetic fields, andthus, the upper limit of W is 8. The S is safely evaluated to be
between R ln4 and R ln8, where R is the gas constant. Using
the relation γTK ~ S, TK is deduced to be 172K (for W = 4)
and 258 K (for W = 8) at 60 T. The obtained TK is comparable to that of α-YbAlB4 (TK ~ 200 K).
The theoretical work using dynamical mean field theory[5] predicts the appearance of the Kondo metal phase in highmagnetic fields, whose Zeeman energy becomes comparable
to the energy gap. According to this calculation, a sharp
peak of DOS appears at the IM transition, and the calculated
magnetization shows a steep increase at the transition that isin good agreement with the experimentally obtained results.
The sharp peak can be considered as the field-induced Kondo

resonance peak. In even greater magnetic fields, the Kondo
effect is expected to be sufficiently suppressed. The recent
report on the magnetization process in YbB12 suggests thatthe magnetic field for the Kondo breakdown is as high as
120 T [6].
References[1] K. Sugiyama, F. Iga, M. Kasaya, T. Kasuya, and M. Date, J. Phys.
Soc. Jpn. 57, 3946 (1988).
[2] Y. Kohama, Y. Hashimoto, S. Katsumoto, M. Tokunaga, andK. Kindo, Meas. Sci. Technol. 24, 115005 (2013).
[3] F. Iga, K. Suga, K. Takeda, S. Michimura, K. Murakami,
T. Takabatake, and K. Kindo, J. Phys. Conf. Ser. 200, 012064 (2010).
[4] T. T. Terashima, Y. H. Matsuda, Y. Kohama, A. Ikeda, A. Kondo,
K. Kindo, and F. Iga, Phys. Rev. Lett. 120, 257206 (2018).
[5] T. Ohashi, A. Koga, S.-i. Suga, and N. Kawakami, Phys. Rev. B 70,
245104 (2004).
[6] T. T. Terashima, A. Ikeda, Y. H. Matsuda, A. Kondo, K. Kindo, andF. Iga, J. Phys. Soc. Jpn. 86, 054710 (2017).
Authors
T. T. Terashima, Y. H. Matsuda, Y. Kohama, A. Ikeda, A. Kondo,
K. Kindo, and F. Igaa
aIbaraki University

Unconventional Field-Induced Spin Gap
in an S = 1/2 Chiral Staggered Chain
P. A. Goddard, T. Sakakibara, and Y. Kohama
The dramatic effect of an alternating local spin environment on the properties of the spin-1/2 antiferromagnetic
chain was first discovered through high-field neutron
scattering and heat capacity experiments on copper-benzoate,
which revealed the development of an energy gap on application of magnetic field [1]. This was perplexing until it
was found that the behaviour of this system, and a handfulof others, could be described by the sine-Gordon modelof quantum-field theory [2,3]. Under the influence of theapplied field, the gap emerges thanks to the presence ofinternal staggered fields and DM interactions that are a direct
result of the staggered Cu(II) octahedra.
Here we report on the molecule-based chiral spin chain[Cu(pym)(H2O)4]SiF6·H2O (pym = pyrimidine), which at
first glance could be a sine-Gordon chain, but with an added
twist: a 41 screw (Fig.1(a)). Figure 1(b) shows the frequency

evolution of electron-spin resonance at 1.9 K. The observed
resonances (black, red and blue (open) squares) cannot be
explained by paramagnetic resonances of transition metals
or conventional antiferromagnetic resonance. This behavior
are reminiscent of excitations observed in the sine-Gordon
spin chain [pym-Cu(NO3)2(H2O)2], where the branches
were identified as breather modes of the sine-Gordon model,
along with six other modes more difficult to classify [4].
However, the present observation cannot be modeled by thebreather gaps proposed for sine-Gordon chains. Figure 1(c)shows the magnetic contribution (Cmag) to heat capacity fora deuterated sample of [Cu(pym)(H2O)4]SiF6·H2O down to
100 mK. In zero field above 0.5 K, the nearly constantvalue of Cmag/T can be interpreted as the heat capacity of a
uniform S = ½ AF Heisenberg chain in the TLL state. The
heat capacity measurement also reveal the field-induced
gap in [Cu(pym)(H2O)4]SiF6·H2O. Given the similarities
with the nonchiral staggered chains, the expression for thetemperature dependence of Cmag derived from the sineGordon model will provide the best possible estimate of the
gap at a particular magnetic field. However fitting our data
to the sine-Gordon model yields a gap of Δs = 1.98 K at
13 T, significantly smaller than the expected value of 8.24
K, calculated using g2s and J values obtained from ESR andmagnetometry. More importantly, the field evolution of thegap exhibits Δs ∝ H, which is distinctly different from theexpectation of the sine-Gordon model, where Δs ∝ H2/3.
To recap, electron-spin resonance, magnetometry andheat capacity measurements reveal the presence of staggered
g tensors, a rich low-temperature excitation spectrum, astaggered susceptibility and a spin gap that opens on theapplication of magnetic field. These phenomena are reminiscent of those previously observed in non-chiral sine-Gordon
systems. In the present case, however, the size of the gap andits measured linear field dependence do not fit with the sineGordon model as it stands. We propose that the differences
arise due to additional terms in the Hamiltonian resulting
from the chiral structure [5].
References[1] D. C. Dender et al., Phys. Rev. Lett. 79, 1750 (1997).
[2] M. Oshikawa and I. Affleck, Phys. Rev. Lett. 79, 2883 (1997).
[3] I. Affleck and M. Oshikawa, Phys. Rev. B 60, 1038 (1999).
[4] S. A. Zvyagin et al., Phys. Rev. Lett. 93, 027201 (2004).
[5] J. Liu et al., Phys. Rev. Lett.122, 057207 (2019).
Authors
J. Liua, S. Kittaka, R. D. Johnsona, T. Lancasterb, J. Singletonc,
T. Sakakibara, Y. Kohama, J. van Told, A. Ardavana, B. H. Williamsa,
S. J. Blundella, Z. E. Mansone, J. L. Mansone, and P. A. Goddardf
aUniversity of Oxford
bDurham University
cNational High Magnetic Field Laboratory, Los Alamos National
Laboratory
dNational High Magnetic Field Laboratory, Florida State University
eEastern Washington University
fUniversity of Warwick

Oxygen-Functionalization ofGraphene Enhances CO2 Adsorption
under Near-Ambient Conditions
S. Yamamoto, J. Yoshinobu, and I. Matsuda
Fig. 1. (a) Chiral structure of [Cu(pym)(H2O)4]SiF6.H2O. (b) Excitations observed via electron-spin resonance at 1.9 K. (c) Temperaturedependence of the magnetic contribution to heat capacity at different
applied fields showing the opening of a field-induced gap. Lines are fits
to a gapped model.

The functionalization of graphene is important inpractical applications of graphene, such as in heterogeneous catalysts. The adsorption of molecules on functional-

ISSP Activity Report 201841

Fig. 2. The structural model of CO2 adsorbed on the oxygen-functionalized graphene. The oxygen species on graphene is an epoxy (C-O-C)
group.

Fig. 1. (a, b) C 1s and O 1s XPS spectra of the pristine epitaxial
graphene measured in 1.6 mbar CO2 at 175 K. (c, d) C 1s and O
1s XPS spectra of the oxygen-functionalized epitaxial graphenemeasured in 1.6 mbar CO2 at 175 K. (e, f) C 1s and O 1s XPS spectraof the oxygen-functionalized epitaxial graphene measured in UHV at
199 K after evacuating the CO2. The incident photon energy was 740
eV. The photon flux densities were 1.0 × 1016 photons/s·cm2 for (a, b),
7.3 × 1016 photons/s·cm2 for (c, d), and 1.5 × 1016 photons/s·cm2 for(e, f). The XPS spectra were normalized with the photon flux densities.

ized graphene is an important elementary step in catalytic
reactions on graphene. Despite its importance, however,experimental approaches to clarify the interactions ofadsorbed molecules with functionalized graphene arelimited. Especially, the experiments in ambient conditions at
which catalysts are operated have been challenging.
In this study [1], the adsorption of CO2 on an oxygenfunctionalized epitaxial graphene surface was studied atnear-ambient conditions using ambient-pressure X-ray
photoelectron spectroscopy (AP-XPS). Monolayer epitaxial
graphene on SiC(0001) was used in this study. The oxygenfunctionalization of graphene was achieved in-situ by thephoto-induced dissociation of CO2 with X-rays on graphene
in a CO 2 gas atmosphere. AP-XPS experiments were
performed at SPring-8 BL07LSU.
Figures 1(a) and (b) shows C 1s and O 1s XPS spectraof the graphene surface measured under 1.6 mbar CO2
at 175 K. Except for the spectral features of the substrate(Graphene(G), SiC, and buffer layer (S1 and S2)) andgas-phase CO2 (CO2(g)), no adsorbed CO2 molecules wereobserved on graphene under the present condition. Whenthe photon flux density was increased by a factor of ~7
under the same conditions of CO2 gas pressure and sample
temperature, C 1s and O 1s XPS spectra were changed (Figs.
1(c, d)). New small peaks at 291.2 eV in C 1s and at 534.7
eV in O 1s XPS spectra were ascribed to adsorbed CO2 [2].
Figures 1(e) and (f) show the C 1s and O 1s XPS spectra
measured in ultrahigh vacuum after evacuating CO2 gas.
After gas evacuation, neither adsorbed CO2 nor gas-phase
CO2 were observed. Therefore, CO2 molecules were only
present on graphene under near-ambient pressure gas at 175
K. When CO2 molecules were adsorbed on the graphenesurface, additional XPS features were observed at 532.0 eV
in O 1s and 286.7 eV in C 1s XPS spectra (Figs. 1(c, d)).
These features were assigned to epoxy (C-O-C) group on
graphene. The photo-induced dissociation of CO2 molecules(CO2→CO + O) at high X-ray photon flux causes the formation of epoxy groups on graphene. The oxygen-functionalized graphene surface binds CO2 molecules more strongly
than the pristine graphene surface.
The increase in the adsorption energy of CO2 on the

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ISSP Activity Report 2018

oxygen-functionalized graphene surface was further investigated by first-principles calculations with the van der
Waals density functional (vdW-DF) method. The adsorption energy of CO2 was increased by ~5 kJ/mol from20.2 kJ/mol on the pristine graphene surface [2] to 25.7
kJ/mol on the oxygen-functionalized graphene surface.
This was in good agreement with the experimental value(≥ 5 kJ/mol) derived from an adsorption and desorption
equilibrium relationship. In addition, first-principles calculations revealed that the most stable adsorption site of CO2
on the oxygen-functionalized graphene surface was not on
top of the epoxy group, but on the C-C bond of graphene
adjacent to the epoxy group (Fig. 2). The adsorption of
CO2 on the oxygen-functionalized graphene surface wasstabilized by both the electrostatic interactions between theCO2 and epoxy group and the vdW interactions between
the CO2 and graphene. The detailed understanding of theinteraction between CO2 and the oxygen-functionalizedgraphene surface obtained in the present study may assist in
developing guidelines for designing novel graphene-based
catalysts.
References[1] S. Yamamoto, K. Takeuchi, Y. Hamamoto, R.-Y. Liu, Y. Shiozawa,
T. Koitaya, T. Someya, K. Tashima, H. Fukidome, K. Mukai, S. Yoshimoto, M. Suemitsu, Y. Morikawa, J. Yoshinobu, and I. Matsuda, Phys.
Chem. Chem. Phys. 20, 19532 (2018).
[2] 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, 2807
(2017).
Authors
S. Yamamoto, K. Takeuchi, Y. Hamamotoa, R.-Y. Liu, Y. Shiozawa, T.
Koitaya, T. Someya, K. Tashimab, H. Fukidomeb, K. Mukai, S. Yoshimoto, M. Suemitsub, Y. Morikawaa, J. Yoshinobu, and I. Matsuda
aOsaka University
bTohoku University

Ultrafast Control of a Ferroelectricity
with Dynamic Repositioning of Proton
in a Supermolecular Cocrystal
T. Umanodan, Y. Okimoto, and J. Itatani
Recent progress of intense THz and mid-IR (MIR)
sources has opened a new opportunity in solid statephysics. The small photon energy that is associated tolong wavelength enables to nondestructively apply intense
optical fields (~10 MV/cm or higher) to condensed matters
because multiphoton ionization followed by catastrophic
optical damage is unlikely to occur. When materials,
especially crystalline materials, are exposed to such intenseReference[1] T. Umanodan, K. Kaneshima, K. Takeuchi, N. Ishii, J. Itatani, H.
Hirori, Y. Sanari, K. Tanaka, Y. Kanemitsu, T. Ishikawa, S. Koshihara,
S. Horiuchi, and Y. Okimoto, J. Phys. Soc. Jpn. 88, 013705 (2019).
[Selected as an Editors’ Choice]
Authors
T. Umanodana, K. Kaneshima, K. Takeuchi, N. Ishii, J. Itatani, H.
Hirorib, Y. Sanarib, K. Tanakab, Y. Kanemitsub, T. Ishikawaa, S. Koshiharaa, S. Horiuchic, and Y. Okimotoa
aTokyo Institute of Technology
bKyoto University
cNational Institute of Advanced Industrial Science and Technology(AIST)

Fig. 1. (a) Waveform of the MIR pulse used for photoexcitation. The
inset depicts the power spectrum of the pulse. The thin line shows theε2 spectrum of Hdppz-Hca. (b) and (c) Time profile of ΔISH / ISH (b) andrelative change in the reflectivity (ΔR/R) (c) in the presence of a MIR
field.

optical fields, many nontrivial exotic phenomena (e.g., highharmonic generation in solids) start to occur.
In this work, we explored the possibility of ultrafast
control of ferroelectricity in a supraziramolecular ferroelectric cocrystal composed of protonated 2,3-di(2-pyridinyl)
pyrazine (Hdppz) and deprotonated chloranilic acid (Hca).
The crystal becomes ferroelectric due to proton ordering
below the Curie point (Tc = 402 K), where the protons taketwo stable positions between the Hdppz and Hca molecules.
We used intense THz and MIR pulses with stable carrier
envelope phases, and probed the symmetry breaking in thepresence of optical field using 6.5-fs optical pulses. Thispulse duration is shorter than one oscillation period of thedriving low frequency field, which allows to look into fieldinduced proton dynamics on sub-cycle time scales of the
MIR field. We measured second harmonic of ultrashortvisible pulses as a signature of inversion symmetry breaking
due to proton displacement.
Figure 1(a) and (b) show the electric field waveformof the intense MIR pulses and observed change of second
harmonic (SH) signals, respectively. Although the MIR
field contains multiple cycles (i.e., the envelopes of thepositive and negative polarity are identical), observed SH
signal follows the optical waveform of the positive polarity
alone. This behavior is well reproduced by a classical model
depicted in Fig. 2. In this model, we included anharmonic
potential and molecular vibration whose resonant frequency
is within the MIR spectrum. As shown in the inset in
Fig. (a)), the spectrum of driving MIR pulse has an overlap
with an absorption peak of C-O- stretching mode, leading to
the displacement of equilibrium point in the presence of MIR
fields. Contrary, with an intense THz field, the change of SH
signals was observed to be proportional to the instantaneous
field amplitude.
In summary, using intense THz and MIR pulses, weobserved field-induced symmetry breaking in Hdppz-Hca
molecular crystals. This process can be understood as the
proton displacement that can follow the oscillating opticalfield up to ~100 THz. The results suggest that repositioningof protons and resulting ferroelectricity can be dynamically controlled by the optical waveform of intense opticalpulses. We expect that more exotic nonlinear responses
will be discovered in future, leading to a foundation of PHz
optoelectronics.

Tensile-Strain-Dependent Spin Statesin Epitaxial LaCoO3 Thin Films
Y. Yokoyama, H. Wadati, and Y. Harada
In transition metal compounds, charge, spin, and orbital
degrees of freedom by a strong electron correlation realize
various physical phenomena such as superconductivity,
metal-insulator transition, and charge ordering [1]. The
perovskite-type cobalt oxide LaCoO3 is one of the mostinteresting materials because of its various electron degrees
of freedom. Since the spin state of LaCoO3 is sensitive tothe crystal field, a spin crossover from the low-spin (LS) to
high-spin (HS) state is shown by increasing the temperature[2]. Epitaxial strain can also influence the spin states and aferromagnetism is observed in LaCoO3 thin films at lower
temperatures ( ≲ 85 K) [3–5]. In previous studies, the spinstates of the thin films were considered by the orderings of
3d electrons on the basis of resonant x-ray diffraction [3–5].
However, direct observations of the electronic structures areimportant to clarify the spin states. Since it is difficult todetermine the spin states by conventional techniques suchas x-ray absorption spectroscopy (XAS), we performed
resonant inelastic soft x-ray scattering (RIXS) with Co 2p →3d → 2p process (L edge) [6]. The RIXS is one of the mostpowerful techniques to clarify the spin states by observing
the d-d excitations.
The LaCoO3 epitaxial thin films (30 nm thickness) were
fabricated on LSAT(110) and LSAT(111) [(LaAlO3) 0.3(SrAl0.5Ta0.5O3)0.7] substrates by pulsed laser deposition

Fig. 1. Comparison of the experimental RIXS spectra excited with A:
L3 −2.9 eV (776.5 eV) measured at 40 and 300 K and the theoreticalones in Oh and D2h symmetries.

ISSP Activity Report 201843

technique. The same substrates with different orientations
enable us to observe the pure strain effects on XAS andRIXS spectra. The lattice constant of the LSAT substrate is
3.868 Å, while that of the LaCoO3 bulk is 3.804 Å, indicatingthat tensile strains are applied to the LaCoO3 epitaxial thinfilms grown on LSAT substrates. The magnitude of thetensile strains from LSAT(110) and LSAT(111) substrates
are 1.0% and 0.5%, respectively (strains are defined as theratio of the cubic root of the unit cell volume) [3,4]. The
experiments of XAS and RIXS were performed at BL07LSU
HORNET, SPring-8 [7]. The RIXS measurements were
performed with soft x-ray from 770 to 810 eV (Co L3 and L2edge). In the range of the x-ray energy, the energy resolutionis ~ 300 meV.
The comparison of the experimental RIXS spectra
excited with A: L3 −2.9 eV (776.5 eV) measured at 40 and
300 K and the theoretical ones with several electronic states
are shown in Fig. 3. The peaks observed at around 0.3 eV is
assigned to the excitations from the HS ground states. On theother hand, the peaks at 1.3 eV observed correspond to theexcitations from the LS ground states. However, the peaks
at 1.0 eV in LaCoO3/LSAT(110) cannot be explained byeither the LS or HS with Oh symmetry. By comparing withthe theoretical spectra, the peak for the HS state is shifted to
1.0 eV by lowering the symmetry from Oh to D2h, indicatingthat the spin state of LaCoO3/LSAT(110) consists of the HS
states with different local symmetries, i.e., the mixture of Oh
and D2h symmetries.
In this study, we performed RIXS measurements andrevealed that the spin states of Co ions were different
between the bulk crystal and the thin film crystals. Although
it is difficult to observe the strain effects on the spin stateswith conventional XAS measurements, clear difference canbe probed with the use of RIXS.
References[1] M. Imada et al., Rev. Mod. Phys. 70, 277 1039 (1998).
[2] M.W. Haverkort et al., Phys. Rev. Lett. 97, 176405 (2006).
[3] J. Fujioka et al., Phys. Rev. Lett. 111, 027206 (2013).
[4] J. Fujioka et al., Phys. Rev. B 92, 195115 (2015).
[5] Y. Yamasaki et al., J. Phys. Soc. Jpn. 85, 023704 (2016).
[6] Y. Yokoyama et al., Phys. Rev. Lett. 120, 206402 (2018).
[7] Y. Harada et al., Rev. Sci. Instrum. 83, 013116 (2012).

ties of the system, we determine that screening of excitonic
correlations plays a key role in the timescale of the transition
to the metallic phase, which supports the existence of an
excitonic insulator phase at equilibrium. The nonequilibrium metallic state observed unexpectedly in the direct-gap
excitonic insulator opens up a new avenue to optical bandengineering in electron–hole coupled systems.
Figure 1 shows the time-integrated TARPES spectra
before and after pumping. After photo-excitation, boththe electron and hole bands cross EF at the same Fermi
momentum kF ~0.1 A−1 as schematically shown by the redand blue parabolas in Fig. 1b. This may indicate that the
hybridization between the two Ta chains is sufficiently strong
to lift the degeneracy. However, since this is not predictedby band-structure calculations, this behavior of the emerging
of the hole and electron bands crossing EF at the same kF is
a surprising nature of the observed non-equilibrium metallic
phase, indicating that the observed nonequilibrium metallic
state is entirely different from the high temperature phase in
the equilibrium state.
To confirm that the observed non-equilibrium metallic
phase of Ta2NiSe5 can be associated with the excitonic
condensation, we have performed comparative TARPES
measurements on Ta2NiS5. Quite unexpectedly, an electronband emerges above EF and the hole band below EF shifts
upward. In addition, the bottom of the electron band and the
top of the hole band seems to cross EF, and the system seems
likely to be semimetallic. This may require reconsidering thenature of the insulating phase for Ta2NiS5, which had been
considered as an ordinary band insulator.
The non-equilibrium metallic phases observed for bothof Ta2NiSe5 and Ta2NiS5 should suggest that these photoinduced phase transitions are not merely transitions tohigher entropy states that can be realized at high temperatures in the equilibrium state. Thus, photo-excitation can beconsidered to induce similar effects to pressure. Since thepressure-induced superconducting phase has been foundfor Ta2NiSe5, with some appropriate pumping condition
probably with lower photon energy of some resonant condition, photo-induced superconductivity might be realized for

Authors
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

Photo-Induced Semimetallic States
Realized in Electron–Hole
Coupled Insulators
K. Okazaki, T. Mizokawa, and S. Shin
Using light to manipulate materials into desired statesis one of the goals in condensed matter physics, since lightcontrol can provide ultrafast and environmentally friendly
photonics devices. However, it is generally difficult to realize
a photo-induced phase which is not merely a higher entropy
phase corresponding to a high-temperature phase at equilibrium.
Here, we report realization of photo-induced insulator-tometal transitions in Ta2Ni(Se1−xSx)5 including the excitonic
insulator phase using time- and angle-resolved photoemission spectroscopy (TARPES) [1]. From the dynamic proper-

44

ISSP Activity Report 2018

Fig. 1. TARPES spectra of Ta2NiSe5 before and after pumping. a
Energy–momentum (E–k) map before pumping, integrated in the timeinterval [−0.29, 0] ps. b Corresponding map of the transient states,
integrated in [0, 1.2] ps. Red and blue parabolas indicate the electron
and hole bands crossing EF in the non-equilibrium metallic state. These
spectra were acquired with a pump fluence of 1.56 mJ/cm2.

this material. Realization of this fascinating photo-induced
phase would be one of the ultimate goals of investigations of
the photo-excited electronic state.
Reference[1] K. Okazaki, Y. Ogawa, T. Suzuki, T. Yamamoto, T. Someya,
S. Michimae, M. Watanabe, Y.-F. Lu, M. Nohara, H. Takagi, N.
Katayama, H. Sawa, M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, T.
Mizokawa, and S. Shin, Nat. Commun. 9, 4322, (2018).
Authors
K. Okazaki, Y. Ogawa, T. Suzuki, T. Yamamoto, T. Someya, S.
Michimae, M. Watanabe, Y.-F. Lua, M. Noharab, H. Takagia,c, N.
Katayamad, H. Sawad, M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, T.
Mizokawae, and S. ShinaUniversity of Tokyo
bOkayama University
cMax Planck Institute for Solid State ResearchdNagoya University
eWaseda University

ISSP Activity Report 201845

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
to existing codes, help releasing private codes for publicuse, writing/improving manuals for public codes. Twotarget programs were selected in fiscal year 2018 and developed software were released as DSQSS (proposal madeby A. Masaki (RIKEN)) and RESPACK (proposal madeby K. Nakamura (Kyutech)). The SCC is also providing aservice for porting users' software to General Purpose GPUsClass

Max Points

Application

System B

System C

A

100

50

any time

B

1k

100

C

10k

D
E

(GPGPU).
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 2018, totally 283 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 (131)
Strongly Correlated Quantum Systems (33)
Cooperative Phenomena in Complex, Macroscopic
Systems (119)In all the three categories, most proposals involve bothmethodology and applications. The results of the projects arereported in 'Activity Report 2018' 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
2018, the following three invited papers are included:"Development of Open-Source Software mVMC and
its Applications", Takahiro Misawa, Yuichi Motoyama, andKota Ido (ISSP, U. Tokyo)"First-Principles Studies on Anomalous Electron andSpin Transport Properties in Non-Trivial Spin Textures",Fumiyuki ISHII (Kanazawa U.)"Coarse-Grained Force Field for Lipid Domain Formation Simulations”, Sangjae Seo, and Wataru Shinoda(Nagoya U.)

Numberof
Projects

Total Points
AppliedApproved

System B

System C

System B

System C

20

2.0k

1.0k

2.0k

1.0k

twice a year

70

64.2k

3.5k

42.6k

2.9k

1k

twice a year

168

1395.3k77.2k620.0k

62.0k

10k

1k

any time

8

42.3k

3.0k

30.0k

2.5k

30k

3k

twice a year

17490.0k

46.0k279.5k39.8k

twice a year

0

0

0

0

0

S
SCCMS

25

235.5k

19.1k

235.5k

19.1k

Total

308

2229.3k

149.7k1209.6k

127.3kTable 1. Research projects approved in 2018
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.

46

ISSP Activity Report 2018

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 scopeof 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 Division (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).
HRC covers a wide energy and Q-range (10μeV < ħω < 2eV
and 0.02Å-1 < Q < 50Å-1), and therefore becomes 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 FY2018 covers wide
range in magnetism and strongly correlated electrons. Oneof the research highlights is the study on quantum phasetransition in the singlet-ground-state antiferromagnet
CsFeCl3 [1]. Even though the HRC spectrometer is designed
for inelastic neutron scattering measurement, the use ofwhite beam allows us to measure Laue spots. Temperature
evolution of the Laue spot at q = (1/3, 1/3, 0) at 1.4 GPa in
Fig. 1(a) evidences the existence of the pressure-induced
magnetic Bragg peak at the q in CsFeCl3. Combinationof further measurements using a neutron diffractometer
ZEBRA and magnetic structure analysis reveals a 120° structure with a propagation vector of kmag = (1/3, 1/3, 0). The
estimated critical exponent of the order parameter suggeststhat CsFeCl3 belongs to the universality class of U(1)×Z2

Fig. 1. (a) Temperature dependence of magnetic Bragg peak measured
at HRC spectrometer. (b) Neutron diffraction profiles at 0.0 and 2.0
GPa measured at ZEBRA spectrometer. The inset exhibits the determined magnetic structure.

symmetry which is expected to realize the chiral liquid state.
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 theneutron 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] S. Hayashida et al., Phys. Rev. B 97, 140405(R) (2018).

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, atmoment, can generate up to 87 Tesla (T) by non-destructive
manner, and from 100 T up to 1200 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
QPT has been explored in various materials such as quantum
spin systems, strongly correlated electron systems and otherFig. 1. Signboard at the entrance of the IMGSL.

ISSP Activity Report 201847

magnetic 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 56 in the FT of 2018.
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 gener-

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.

Building C
Room
101-113

Building C
Room 121

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.

Alias

Type

Bmax

Pulse width
BorePower source

Applications

OthersElectro- Magnetic
Flux Compression

destructive

1200 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

ator 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

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 2018

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

48

Lowest temperature
0.1 K

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

Independent
Experiment in 5 site

Fig. 1. Members of CCMS.

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.

(Fig. 3), has been proceeded. Our experimental techniques
using the destructive magnetic fields have intensively beendeveloped. The system which is unique to ISSP in theworld scale is comprised of a power source of 5 MJ maincondenser bank and 2 MJ condenser bank. Two magnet
stations are constructed and both are energized from eachpower source. Both systems are fed with another 2 MJ
condenser bank used for a seed-field coil, of which magnetic
flux is to be compressed. The 2 MJ EMFC system iscurrently under the process for optimizing several mechanical and electrical parameters such as dimensions of coils
and liners. And so far, generation of 450 T was successfully done using 1.6 MJ energy. The 5 MJ EMFC system
is under conditioning the main gap switches by finely
tuning control parameters. And so far, generation of 1200 T
was successfully done using 3.2 MJ energy. As an easy
access to the megagauss science and technology, we havethe 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.

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 infor-

mation 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 FY2018:• 4/2-4/3 Joint Research Meeting of ISSP Supercomputer
Joint Use and CCMS Annual Activity Report 2018 ISSP,
Kashiwa• 5/10 PCoMS Matching Workshop for industries &
graduate students/postdocs The University of Tokyo
Kashiwa Campus Station Satellite, Kashiwa• 7/2-7/12 The International Summer Workshop
2018 on First Principles Electronic Structure
Calculations(ISS2018) ISSP, Kashiwa• 7/19-7/20 Post-K Project Priority Issue 7, The 3rd
Annual Meeting Koshiba-Hall, Hongo, Tokyo• 10/2-10/4 The 2nd Innovation Camp for Computational
Materials Science (2nd ICCMS) The Kaike Seaside
Hotel, Tottori• 10/19 Post-K Project Exploratory Challenge 1,
Sub-Challenge D, Workshop KOIL, Kashiwa• 12/3 TIA-Kakehashi Poster Workshop 2018 The
University of Tokyo Kashiwa Campus Station Satellite,
Kashiwa• 12/17-12/18 Post-K Project Priority Issue 7, The 4th
Symposium ISSP, Kashiwa• 2/4 PCoMS Skill improvement training for graduate
students & postdocs ISSP, Kashiwa• 3/5 The visualization Symposium 2019 Akihabara UDX
theater, 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 synchrotron-

ISSP Activity Report 201849

based 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 ofmaterials 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

Fig. 3. Close look of a high-peak-power ultrashort-pulse laser

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

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).

Fig. 1. Open ceremony of LASOR center on October 2012.

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

50

ISSP Activity Report 2018

• 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
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.
• 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 ofthe 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.

Fig. 7. Pump-probed photoemission system using 60-eV laser• Coherent Photon Science GroupThe coherent-photon science group has main interests in
exploring a variety of coherent phenomena and non-equilibrium properties of excited states in condensed matters, inFig. 8. Photonics devices under study: (left panel) semiconductor
quantum wires and (right panel) firefly-bioluminescence system
consisting of light emitter (oxyluciferin) and enzyme (luciferase)

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

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

• Brilliant soft X-ray beamline at Harima branch
In 2006, the SRL staffs have joined the Materials

ISSP Activity Report 201851

Fig. 4. Ambient pressure photo- Fig. 5. Soft X-ray diffraction
emission
stationFig. 1. TR-SX station

Fig. 2. 3D-nano ESCA station

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 witha two-dimensional angle-resolved time-of-flight (ARTOF)
analyzer (Fig. 1), three-dimensional (3D) nano-ESCA
station equipped with the Scienta R-3000 analyzer (Fig. 2),high resolution 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 suchas ambient pressure photoemission (Fig. 4) and soft X-ray
diffraction (Fig. 5) which are also open for public use from2018, and soft X-ray resonant magneto-optical Kerr effect(MOKE), 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 laser-

Fig. 3. Soft X-ray emission station

52

ISSP Activity Report 2018

pump 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 enabled real ambient pressure
experiments. Soft X-ray resonant MOKE station has beendeveloped to make novel magneto-optical experiment using
fast-switching of the polarization-controlled 25-m longsoft X-ray undulator. The soft X-ray diffraction station has
been fully constructed and the time-resolved measurement
is available by using lasers at the TR-SX station. In 2018,242 researchers made their experiments during the SPring-8
operation time of 4608 hours.
• High-resolution Laser SARPES at E-building
Spin- and angle-resolved photoelectron spectroscopy(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 are

Fig. 6. Laser-SARPES system at E-buildingconnected 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 the angle-resolved photoelectron
spectroscopy with two-dimensional (energy-momentum)
detection. The laser-SARPES machine can provide both
high-resolution spin-integrated and spin-resolved photoemission spectra in various types of solids, such as spin-orbit
coupled materials and ferromagnetic materials.

ISSP Activity Report 201853

Conferences and Workshops
The International Summer WorkShop 2018 on First-Principles Electronic Structure(ISS2018)
July 2-12, 2018
T. Ozaki, F. Ishii, H. Weng, M. J. Han, M. Otani, M. Kawamura, C.-C. Lee, M. Fukuda, and Y.-T. Lee
The international summer workshop was organized in July, ISSP, the University of Tokyo to discuss recent advances offirst-principles electronic structure methods and its advanced applications, and to promote international collaborations in thecommunity, where in total 118 participants including 64 participants from abroad joined the workshop. In addition to the localorganizing committee, Prof. Ishii of Kanazawa Univ., Dr. Otani of AIST, Prof. Han of KAIST, and Prof. Weng also contributed
to the organization. The international workshop consisted of three parts: (i) The Summer School on DFT: Theories and Practical
Aspects for July 2-6, (ii) The 3rd OpenMX developer's meeting for July 9-10, and (iii) Advanced Lecture Series for July 11-12.
In the first part, fundamental issues and practical aspects of density functional theories (DFT) calculations were discussed by
15 lectures including pseudopotential theories, implementation of DFT, large-scale DFT methods, computational methods ofabsolute binding energies of core level, and generation of Wannier functions. Advanced applications such as topological insulators and lithium ion batteries were also discussed. In the second part, recent methodological development and applications
related to the OpenMX DFT code that ISSP has been developing were presented by developers and advanced users to promotefurther collaboration of the community. The developments of the DC-LNO O(N) method and optical properties calculations
were presented by 17 speakers. In the third part, six leading researchers gave the advanced lecture series covering methodological developments in computational physics and chemistry and its application to a wide variety of materials having not
only fundamental significance and but also industrial importance. The Advanced Lecture Series highlighted the current statusof first-principles electronic structure calculations and indicated a future direction of the field. In addition to this, there was aposter session of contributed participants to enhance active discussion.

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ISSP Activity Report 2018

The 16th International Conference on Megagauss Magnetic Field Generation and
Related Topics | ISSP International Symposium
September 25-29, 2018
S. Takeyama, Y. H. Matsuda, B. Novac, and Y. KohamaThis international conference is a series of the Megagauss conferences and was held in Japan for the first time. The conference venues are Kashiwa-no-ha Conference Center in Mitsui Garden Hotel (main venue) and The Future Center Initiative of the
University of Tokyo (poster venue). Both venues are located close to the Kashiwanoha railway station of the Tsukuba Express.
There are 108 participants in total including 61 participants from USA, Russia, China, Europe, and India. The topics of the
Megagauss conferences are (i) generation of ultrahigh magnetic fields, (ii) high-energy and high-current pulsed power physics
and technology, (iii) magnetic-flux compression technologies and their applications, (iv) high energy density physics related
to fusion research, (v) high magnetic field applications in solid-state physics and for other related applications. In previous
Megagauss conference, however, only a very small number of presentations have been made in solid-state-physics domain. Oneof the purposes to have this series of conference in Japan is to promote exchange more between researchers of pulsed power
sciences and solid state physicists. The organizers encouraged not only domestic but also international solid state physicists toparticipate the conference. In the conference we had 42 oral and 57 poster presentations. When we count the numbers of solidstate-physics-related presentations of them, they are 15 and 37, respectively, and the numbers are considered to be large enoughto boost exchanges between the pulse power and solid state physics scientists. The leaders of high magnetic field facilities ofGermany, France, USA, and China presented recent results on high field properties of magnetic materials, semiconductors,
superconductors, and strongly correlated systems as well as current status of their facilities. It should be noted that progressof Chinese research groups in both solid state physics and pulse power science domains is impressive. It is also found thatcomputer simulation on high-density plasma and pulse power technology has been highly developed.

ISSP Activity Report 201855

Topological Phases and Functionality of Correlated Electron Systems 2019
February 18-20, 2019
S. Nakatsuji, Y. Otani, M. Oshikawa, C. Broholm, H. Harima, S. Miwa, and H. Wadati
For a long time, magnetism has been a central subject in strongly correlated electron systems. More recently, topology led
to a new classification of band insulators, namely topological insulators. Where magnetism and topology meet, we find many
intriguing phenomena including emergent "relativistic" particles and multipolar degrees of freedom. The novel physics also
opens up a promising direction in spintronics and other potential practical applications. In this conference, we explored experimental and theoretical studies on subjects ranging from fundamental issues in correlated topological phases to their cuttingedge applications to spintronics. We invited 19 active researchers who are top-runners of the field around the world, and theypresented their latest research results along with active discussions. On top, 11 members from ISSP, especially from Quantum
Materials Group, presented their latest research, in order toenhance the collaboration between ISSP and other institutes.
The workshop was a great success. The venue wascompletely packed for all three days of the workshop by
altogether 185 attendees. As planned, the latest results of bothexperiments and theories are delivered, covering a wide variety
of materials such as the heterostructure of topological insulators, frustrated magnets, Weyl antiferromagnets, Kitaev spin
liquids, and organic magnets. It should be noted that despite
being a transdisciplinary workshop, its Q&A session was very
active.
We had 74 poster presentations, 34 of them are from ISSP,
and the rest are from all over Japan, including Kyoto University, and Tohoku University. Many people were staying infront of each poster and discussing with each other actively.
In addition, the speakers of invited talks participated in poster
sessions gave helpful comments to the students and postdocs.
We believe this becomes a valuable experience for young
researchers. For poster awards, five students were nominatedafter very competitive selections.
As aforementioned, this workshop has been a great success.
We hope that groundbreaking discoveries and inventions will
be made soon based on the collaboration initiated from theworkshop. Lastly, we greatly appreciate everyone's generous
support, including the organizers, judges, directors, secretaries,and student part-timers. Without any of the members, this could
not have been accomplished.

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ISSP Activity Report 2018

Computational Materials Science —Now and the Future—

April 2-3, 2018
T. Hoshi, K. Yasuoka, N. Hatano, T. Ozaki, O. Sugino, H. Noguchi, S. Kasamatsu,
Y. Noguchi, Y. Higuchi, S. Morita, H. Watanabe, and N. Kawashima

This annual workshop is a joint activity between the supercomputer center (SSC/MDCL) and the center of computational
materials science (CCMS), organized for the research community of the computational condensed matter physics. The objective
is for the participants to exchange the information on the recent progress on the computational condensed matter research aswell as the technical aspects of the high-performance computation. Every year we invite a few speakers on the topics of generalinterest. This year's workshop included two suchspecial talks: one by Motoko Kotani (Tohoku
U.) who talked about application of discretegeometry to material design by and the other by
Teruyasu Mizoguchi (IIS, U. Tokyo) who talked
about usage of artificial intelligence for analyzing
crystalline interfaces. In addition to these two
special invited talks, there were 14 invited oral
talks and 32 poster presentations. The resultsof Software development/improvement project
were also reported, where the target programsfor FY2017 were DCore, proposed by Hiroshi
SHINAOKA (Saitama U.), and HPhi, proposed by
Yohei YAMAJI (U. Tokyo).

Novel Phenomena in Quantum Materials driven by Multipoles and Topology
April 9-10, 2018
S. Nakatsuji, M. Oshikawa, and H. Harima
In recent years, the study of quantum materials, in particular of strongly correlated electron systems, have been enriched by
the introduction of new physics based on multipoles and topology. The international workshop was planned to bring together
scientists exploring the novel phenomena in new materials, and novel functionality by using spintronics and photonics, to sharethe latest knowledge and to fertilize new research directions. During the two days of workshop, a total of 162 people (92 on thefirst day and 70 on the second day)participated in the workshop, and
22 of oral and 42 of poster presentations were given by foreign andJapanese scientists. According to thequestionnaires the participants filled
out, the poster session was particularly well received and yielded
fruitful discussions. Although it
was an overcrowded schedule of
2 days, discussions were lively
held everywhere even during the
break time. Our workshop offered
great opportunity where all theparticipants could share informationand exchange views on the latest
research results related to multipoles
and topology.

ISSP Activity Report 201857

Frontier Research on Glass Transition and Related Fields

May 10-12, 2018
O. Yamamuro, H. Tanaka, T. Kanaya, K. Miyazaki, H. Hayakawa, K. Fukao, R. Nozaki, J. Habasaki, and N. Shinyashiki

This is the largest domestic workshop on the glass transition which has been held every 2 – 4 years since 2002. The glasstransition is a mysterious phenomenon that a liquid is solidified without any structural change and its mechanism has not beenclarified yet. In the physical properties of glasses, there are also many unsolved problems (e.g., boson peaks) originating fromits non-periodic and disordered structure. Other than the works on the glass itself, there are many interesting phenomena related
to the glass transition such as spin glass transition, jamming transition of granular materials, dynamical transition in proteins,etc. It is meaningful to assemble both experimental and theoretical researchers of the areas mentioned above to exchange
current information and make discussion for future researches. We organized 43 oral and 45 poster presentations.
The topics of the workshop were (1) glass and supercooled liquid, (2) granular matter, jamming, rheology, (3) waterand network glass, (4) biological and electronical glasses, (5) polymer and soft matter, (6) liquid-liquid transition andpolyamorphism, (7) ionic conductor and ionic liquid. We had 110, 120 and 100 attendees for the first, second and third days,
respectively, including many young researchers and people from outside of ISSP. There was very active and fruitful discussion
throughout the workshop.

Present and Future of Neutron Scattering Research on Condensed Matter Physics~Future Perspective of US-Japan Cooperative Program on Neutron Scattering~
June 4-5, 2018
T. Masuda, M. Shibayama, H. Fukazawa, and Taku J Sato
Neutron Science Laboratory the University of Tokyo cooperates joint research program using triple-axis spectrometers(TAS) in JRR-3, high-resolution chopper (HRC) spectrometer in J-PARC, and cold neutron triple-axis (CTAX) spectrometerin HFIR in Oak Ridge National Laboratory. Among them CTAX has been operated under the program based on the agreement between the governments of US and Japan on cooperation research and development in science and technology in 1980,
and the spectrometer has been crucial for TAS users in Japan particularly after the long shutdown of JRR-3. In addition, stateof-art inelastic spectrometers including HRC has been producing outstanding results, and the complimentary use with TAS
is now popular. Furthermore in 2023 the upgrade of CTAX in large scale, the MANTA project, is planned, and the US-Japan
cooperative program is getting more important. In this workshop researchers in the field of neutron scattering in US and Japandiscussed the present and future of neutron scattering research on condensed matter physics. The present statuses of CTAX
and MANTA project werereviewed by US researcher,and the future of US-Japan
cooperative program wasdiscussed. Furthermore,
future of spectrometers in
JRR-3 was also discussed.
In total 26 of oral and 9 of
poster presentations weremade by US and Japanesescientists, and the participants had fruitful discussions.

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ISSP Activity Report 2018

New Trends in Quantum Information and Condensed Matter Physics

July 31-August 3, 2018
M. Oshikawa, T. Sasaki, T. Tomita, Y. Nakata, and M. Negoro

Quantum information science is a rapidly growing research field, aiming not only to explore information processing basedon quantum theory but also to understand physics from the viewpoint of information. In the last decade, a number of novel
perspectives were introduced from quantum information to many fields of physics, such as condensed matter physics, statistical mechanics, and even high energy physics, revealing that information isindeed the key to understand physics in complex quantum systems. The main
goal of this workshop was to further promote these fruitful interactions between
quantum information science and quantum physics. To this end, we invited active
researchers from various fields, such as cold atoms, strongly correlated systems,
black hole science, and quantum information and computation, both theorists
and experimentalists. We also had selected talks and poster presentations. Each
presentation started with a brief introduction of the topics and ended up with ahuge discussion about the recent progress. In total, we had more than 660 participants in four days. This workshop provided a great opportunity to the researchers,
who are willing to explore new frontiers of physics from the viewpoint of information, for future interdisciplinary collaborations.

New Development of Science in Strongly Spin-Orbit Coupled Conductors
November 12-13, 2018
M. Tokunaga, Z. Hiroi, I. Matsuda, and Y. Fuseya
Control of physical properties via spin degrees of freedom is a fundamental subject common to various fields of materialscience. Strong spin-orbit interaction can make this control dramatic if the effect is properly incorporated. This workshop washeld to share various on-going subjects in strongly spin-orbit coupled conductors developing independently in each research
field. To this end, leading researchers from various fields got together and presented the latest researches in each field.
The workshop was started by theoretical introduction of fundamentals related to the spin-orbit coupling/interaction, andfollowed by bulk properties of elemental bismuth and the relatedmaterials in extreme conditions. In the following session of
surface science, non-trivial band topology of pure bismuth was
proposed to explain the observed surface states. Further, current
status of the studies on spin-Hall and thermoelectric effects inbismuth were introduced in the spintronics and nano-materials
session. In addition to the phenomena found in these p-electron
systems, effects of strong spin-orbit interaction in d and felectron systems are also discussed. At the end of each session,
there was a lively exchange of ideas by researchers in different
area at the time of discussion.

ISSP Activity Report 201859

Upshift in the Soft X-ray Science of Synchrotron Radiation

November 30-December 1, 2018
I. Matsuda, T. Arima, Y. Harada, H. Wadati, T. Kondo, and S. ShinThe conference was organized on November 30 and December 1 to promote scientific and technological innovations ofsoft X-ray synchrotron radiation, motivated by the announcement on the next-generation facility by the Minister of Education, Culture, Sports, Science and Technology on July 3, 2018. It has successfully brought together more than 200 participants,
including the presidents and the outstanding researchers of synchrotron radiation institutes and societies from all over Japan.
The presentations at the ISSP lecture room were broadcast live to a conference room in SPring-8 through the internet. On thefirst day, the program focused on science and technology to be evolved at the new facility, while, on the second day, it featured
experimental methods and information technologies to be developed toward researches with the light source.
With the next-generation soft X-ray synchrotron radiation, measurements are expected to be made with multi-dimensional
data acquisitions or with ultra-high resolutions that have never been possible at the existing facilities. The attendance interdisciplinarily argued research topics to respond to needs in academic and industrial fields today. There was also vigorous discussion
on the cutting-edge informatics to be applied in the data analysis. We were confident that the workshop was very timely andthat all the arguments would become seeds of the novel science and technology.
The conference was hosted by the Institute for Solid State Physics (the University of Tokyo), Synchrotron Radiation Research
Organization (the University of Tokyo), Tohoku University, and User Community of VUV∙ SX high-brilliant light sources.

Liquid-Crystal-like Electronic States Generated by Quantum Many-Body Effects
December 27-28, 2018
T. Shibauchi, T. Kimura, T. Hanaguri, K. Kobayashi, K. Ohgushi, H. Kontani, and K. Okazaki
Recently, in the normal states of iron-based and cuprate superconductors, electronic states with spontaneous rotational
symmetry breaking have been observed, which are called “electronic nematic” states. It has been a central issue to understandthe relationship between high-temperature superconductivity and such electronic states that bear some analogy with liquid
crystals. It has also been an important issue in insulating quantum spin systems that “spin liquid crystals” with broken symmetries, which differ from conventional magnetic orders (spin solids) and quantum spin liquids, may be realized. Those include
spin nematic and chiral spin liquid states. These liquid-crystalline electronic states in metals and insulators are non-classicalphenomena driven by quantum fluctuations and quantum many-body effects, which may have underlying principles thatare important to study. This workshop aimed to provide a unique platform for developing new exchanges between different
communities of superconductivity, strange metals and magnetic insulators. In two days, 25 talks and 27 poster presentations
were given with lively discussions.

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ISSP Activity Report 2018

ISSP Activity Report 2018

61

62

Subjects of Joint Research

ISSP Activity Report 2018

平成 30 年度 共同利用課題一覧（前期）/ Joint Research List (2018 First Term)
嘱託研究員 / Commission Researcher
No.

課題名

担当所員：森

氏名

所属

Title

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

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

極低温走査トンネル顕微鏡を用いた鉄カルコゲ
ナイド超伝導体 FeSeTe の研究

吉田

靖雄

金沢大学

理工学域

薄倉

淳子

東京理科大学

理学部

5

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

6

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7

圧力下 NMR 測定法に関する開発

藤原

直樹

京都大学

担当所員：長谷川

担当所員：秋山
4

Organization

初果

1

3

Name

Yokohama City
University

Umpei Nagashima

Foundation for
Computational Science

Low-temperature STM study on iron-chalcogenide
superconductor FeSeTe

Yasuo Yoshida

Kanazawa University

Theoretical study for equilibrium geometries and theirelectronic excited states of coumarin-caged luciferin

Junko UsukuraTokyo University of
ScienceKazuyukiMatsubayashi

The University
of ElectroCommunications

Keizo Murata

Osaka University of
Economics and Law

Naoki Fujiwara

Kyoto University

〃

幸雄

英文

クマリン・ケージドルシフェリンの安定構造とその電子励起状態の理論的研究

担当所員：上床

Masanori Tachikawa

美也

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

Name

Organization

8

希土類 122 化合物における圧力効果

繁岡

透

山口大学

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

Toru Shigeoka

Yamaguchi University

9

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
Ryukyus10

磁化測定装置の開発

名嘉節

機能性材料研究
物質・材料研究
拠点微粒子工学 Development of the magnetometer機構
グループ

Takashi Naka

National Institute forMaterials Science11

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

12

カンチレバーを用いたトルク測定法の開発

鳥塚潔

日本工業大学

共通教育学群

Studies on High Pressure Properties of Organic Molecular
Conductors

Kiyoshi Torizuka

Nippon Institute ofTechnology

13

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

14

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

15

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

16

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

Hiroki Takahashi

Nihon University

担当所員：野口Development of multi-anvil apparatus for low temperature

Adjustment of Cubic Anvil apparatus

博司

ISSP Activity Report 201817

第一原理有効模型導出プログラム RESPACK と模型解析プログラム H φ /mVMC の融合による非経験的強相関電子構造解析ソフトウェアの整備中村和麿

九州工業大学

Development of first principles electronic-structure calculation
大学院工学研究
software by combining effctive -model derivation code
Kazuma Nakamura
院（RESPACK) and model-analysis codes (H φ /mVMC）

Kyushu InstituteTechnology

18

非自明並列を実装した量子モンテカルロソルバ
ー DSQSS の高度化

正木晶子

理化学研究所

計算科学研究機 Development of a quantum Monte Carlo Solver -DSQSSimplementing nontrivial parallelization
構

Akiko Masaki

RIKEN

担当：中性子科学研究施設

63

19

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

20

〃

奥山

大輔

東北大学

多元物質科学研究所〃

Daisuke Okuyama

Tohoku University

21

〃

那波

和宏

東北大学

多元物質科学研究所〃

Kazuhiro Nawa

Tohoku University

22

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 Tomiyasu

Tohoku University

64

No.

課題名

23

〃

氏名

所属

ISSP Activity Report 2018

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

Title

Name

Organization〃

Kazuaki Iwasa

Ibaraki University24

T1-1、T1-3 における共同利用推進

大山

研司

茨城大学

大学院理工学研
Research and Support of General-Use at T1-1 and T1-3
究科

Kenji Ohyama

Ibaraki University25

T1-2、T1-3 における共同利用推進

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 University26

T1-2、T1-3、６G における共同利用推進

南部

雄亮

東北大学

金属材料科学研
Research and Support of General-Use at T1-2, T1-3 and 6G
究所

Yusuke Nambu

Tohoku University

27

〃

池田

陽一

東北大学

金属材料科学研究所〃

Yoichi Ikeda

Tohoku University

28

〃

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 and T1-3
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

29
30

T2-2、T1-3 における共同利用推進
〃

〃

31

C1-2 における共同利用推進

杉山

正明

京都大学

複合原子力科学
Research and Support of General-Use at C2-2
研究所

Masaaki Sugiyama

Kyoto University32

C1-2、C2-3-1 における共同利用推進

井上

倫太郎

京都大学

複合原子力科学
Research and Support of General-Use at C1-2 and C2-3-1
研究所

Rintaro Inoue

Kyoto University

33

C1-3-mfSANS における共同利用推進

間宮広明

先端材料解析研
物質・材料研究究拠点中性子散 Research and Support of General-Use at C1-3-mfSANS
機構
乱グループ

Hiroaki Mamiya

National Institute forMaterials Science

34

〃

古坂

道弘

北海道大学

大学院工学研究科〃

Michihiro Furusaka

Hokkaido University

35

〃

大沼

正人

北海道大学

大学院工学研究科〃

Masato Ohnuma

Hokkaido University

36

〃

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

37

C2-3-1 における共同利用推進

守島

健

京都大学

複合原子力科学
Research and Support of General-Use at C2-3-1
研究所

Ken Morishima

Kyoto University38

C3-1-2、C2-3-1 における共同利用推進

日野

正裕

京都大学

複合原子力科学
Research and Support of General-Use at C3-1-2 and C2-3-1
研究所

Masahiro Hino

Kyoto University

39

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 University

No.

課題名

40

〃

氏名

所属

小田

達郎

京都大学

複合原子力科学
研究所

Title

Name

Organization〃

Tatsuro Oda

Kyoto University

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

45

〃

山形

豊

理化学研究所

光量子工学研究
領域〃

Yutaka Yamagata

RIKEN

46

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

47

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

RIKEN

48

有機化合物の光電子分光

金井要

東京理科大学

理工学部

Photoemission study on organic compounds

Kaname Kanai

Tokyo University of
Science49

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

Time-resolved photoemmission study on strongly-correlatedmaterials

Takashi Mizokawa

Waseda University

50

時間分解・マイクロビームラインの開発と研究

室

Takayuki Muro

JASRI

51

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
Science52

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
Science53

レーザー光電子分光による参加薄膜の研究

津田

俊輔

54

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

55

固体中のマヨラナ粒子の研究松田祐司

担当所員：辛埴貴博

ISSP Activity Report 2018

隆桂之

高輝度光科学研 利用研究促進部
Development of micr- and time-resolved beamline
究センター
門

機能性材料研究
物質・材料研究
Shunsuke Tsuda
拠点量子輸送特 Laser-Photoemission Study on Oxide Films
機構
性グループ
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

京都大学

大学院理学研究 Study of Majorana Fermion in Solids by Laser Photoemission
Spectroscopy
科

Yuji Matsuda

National Institute forMaterials Science
National Institute forMaterials Science
Kyoto University

66
ISSP Activity Report 2018

No.

課題名

氏名

所属

56

〃

佐藤

昌利

京都大学

基礎物理学研究所

57

時間分解光電子分光や超高分解能光電子分光を用いた超伝導体や強相関系物質の研究

吉田

鉄平

58

FeSe 超伝導体における BCS-BES クロスオーバ
ーの研究

紺谷

59

Title

Name

Organization〃

Masatoshi Sato

Kyoto University

京都大学

大学院人間・環 Laser ARPES study on superconductors and strongly-correlated
Teppei Yoshidamaterials
境学研究科

Kyoto University

浩

名古屋大学

大学院理学研究
Study of BCS-BES crossover in FeSe superconductors
科

Hiroshi Kontani

Nagoya University

レーザー角度分解光電子分光による重い電子系
大田
超伝導体 CeCoIn5 の超伝導ギャップ異方性特定

由一

計算標準総合セ Verification of superconducting-gap anisotropy of heavy
産業技術総合研
ンター工学計測 fermion superconductor CeCoIn5 by laser angle-resolved
究所
photoemission spectroscpy
標準研究部門Yuichi Ota

National Institute ofAdvanced Industrial
Science and Technology

60

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

61

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

62

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 60eV
laser
究科

Kyoko Ishizaka

The University of
Tokyo

63

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

64

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
Agency65

時間分解光電子顕微分光実験の技術開発

木下豊彦

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

JASRI

66

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 electron state of molecular crystals using
photoemission spectroscopy
研究科

Takayuki Kisu

Osaka University

67

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 University68

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-resolved ARPES investigation of monolayer Thallium on
Si(111)
研究科

Kazuyuki Sakamoto

Chiba University

担当所員：原田慈久

69

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

70

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

71

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 University

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

No.

課題名

72

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

73

〃

朝倉

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

74

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

75

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 of
Tokyo

小嗣

真人

東京理科大学

基礎工学部

Masato Kotsugi

Tokyo University of
Science

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：松田
76

所属

Title

〃

Name

Organization巌

時間分解磁気光学実験の技術開発担当所員：和達

氏名Technical development of time-resolved magneto-opticalexperiment大樹

77

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78

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 Nagamura
by 3DnanoESCA
機構
究拠点

National Institute forMaterials Science79

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

統合型材料開Observation of magnetic domain structure for ferromagnetic
物質・材料研究
発・情報基盤部
thin films by means of resonant scatterin
機構
門

National Institute forMaterials Science

山崎

Yuichi Yamasaki

ISSP Activity Report 2018

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

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

理工学部

Experimental and theoretical studies on gap symmetry
determination in superconductors

Kazushige Machida

Ritsumeikan
University2

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

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

Makoto Yokoyama

Ibaraki University

3

〃

大島

佳樹

茨城大学

大学院理工学研
究科

Yoshiki Oshima

Ibaraki University4

磁場中比熱測定によるカゴメ近藤格子の量子臨
界現象の研究

高畠

敏郎

広島大学

大学院先端物質 Study of quantum critical phenomena in the kagome Kondo
lattice by specific-heat measurements in magnetic fields
科学研究科

Toshiro Takabatake

Hiroshima University〃

68
ISSP Activity Report 2018

No.

課題名

氏名

所属

5

〃

志村

恭通

広島大学

大学院先端物質科学研究科〃

Yasuyuki Shimura

Hiroshima University

6

〃

津田

研

広島大学

大学院先端物質科学研究科〃

Suguru Tsuda

Hiroshima University

岡本

佳比古

名古屋大学

大学院工学研究 Low Temperature Magnetization Measurements on a Ternary
Pt Sulfide
科

Yoshihiko Okamoto

Nagoya University

Title

Name

Organization

7

三元 Pt 硫化物の低温磁化測定

8(U,Th)Be13 と UNi2Al3 における極低温磁化・熱清水
膨張・回転磁場中比熱測定

悠晴

東北大学

金属材料研究所

Low-temperature magnetization and heat-capacity in rotatedmagnetic fields for (U,Th)Be13 and UNi2Al3

Yusei Shimizu

Tohoku University

9

微小純良結晶を用いた超伝導体の比熱測定

加瀬直樹

東京理科大学

理学部

Specific heat measurements using a small single crystal

Naoki Kase

Tokyo University of
Science10

磁気フラストレートした一次元量子スピン系
Rb2(Cu1-xMx)2Mo3O12 (M=Zn, Ni) の不純物置換 安井
効果

幸夫

明治大学

理工学部

Impurity Doping Effect of Magnetically Frustrated Onedimensional Quantum Spin System Rb2(Cu1-xMx)2Mo3O12(M=Zn, Ni)

Yukio Yasui

Meiji University

Low temperature magnetism of triangular antiferromagnets

Yoshitomo Karaki

University of the
Ryukyus

担当所員：山下穣

11

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

12

重い電子系超伝導体 CeCoIn5 の超低温における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 in aheavy fermion superconductor CeCoIn5科

Hiroaki Shishido

Osaka Prefecture
University

13

銅酸化物高温超伝導体における磁化分布の直接
観察

芝内

孝禎

東京大学

大学院新領域創 Direct imaging of magnetization distribution on high-Tc
superconductors
成科学研究科Takasada Shibauchi

The University of
Tokyo

14

重い電子系超伝導体 CeCoIn5 の超低温におけるdHvA 効果測定片山諒

大阪府立大学

大学院工学研究 dHvA effect measurements at ultra-low temperatures in aheavy fermion superconductor CeCoIn5
科

Ryo Katayama

Osaka Prefecture
University

米谷

玲皇

東京大学

大学院新領域創Research on nanosensing device
成科学研究科

Reo Kometani

The University ofTokyo

担当所員：勝本15

信吾

ナノセンシングデバイスに関する研究

16

〃

田中

航大

東京大学

大学院工学系研
究科〃

Kodai Tanaka

The University of
Tokyo

17

〃

吉原

健太

東京大学

大学院工学系研
究科〃

Kenta Yoshihara

The University of
Tokyo

18

電気二重層トランジスタ構造におけるチャネルと超伝導電極との接合の研究

石黒亮輔

日本女子大学

理学部

Ryosuke Ishiguro

Japan Women's
University

19

〃

相川

夕美花

日本女子大学

大学院理学研究科

Yumika Aikawa

Japan Women's
University

Study of a junction between electric double layer transistor
channel and superconducting electrodes
〃

No.

課題名

担当所員：大谷
20

所属

Title

Name

Organization

Motoi Kimata

Tohoku University

Yuuki Takahashi

Tokyo University of
Science

Kan Nakatsuji

Tokyo Institute ofTechnology

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

氏名

木俣

基

東北大学

金属材料研究所

Novel current response in non-centrosymmetric crystal andmagnetic structures

文夫

21

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

優樹

東京理科大学

大学院基礎工学
Study of N surfactant effect on L10-FeNi by using STM
研究科

22

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

物質理工学院田中和也

東京工業大学

物質理工学院〃

Kazuya Tanaka

Tokyo Institute ofTechnology

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-Ru quasicrystal and its
approximant crystals

Ikuzo Kanazawa

Tokyo Gakugei
University

23
24

〃

Electronic structure of In-Bi surface alloy grown on
Si(111)4times1-In substrates

ISSP Activity Report 2018

69

25

〃

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

26

〃

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

27

〃

中村

駿

東京学芸大学

大学院教育学研
究科〃

Shun Nakamura

Tokyo Gakugei
University

28

〃

高橋

潤

東京学芸大学

大学院教育学研
究科〃

Jun Takahashi

Tokyo Gakugei
University29

SiC(0001) 上の Bi 吸着状態の構造および電子状
態の解析

田中

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

30

〃

尾家

翔太郎

九州大学

大学院工学府Shotaro Oie

Kyushu University

悟

九州大学

大学院工学研究 Electronic structures of graphene transferred on SiC periodic
nanosurfaces
院

Satoru Tanaka

Kyushu University

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
The STM/STS study of group III/IV 2D overlayers on SiC(0001) Visikovskiy Anton
院

Kyushu University李埼玉工業大学

先端研究所

Saitama Institute ofTechnology

31

SiC ナノ周期表面上に転写したグラフェンの電子
田中
状態の観察

32

〃

33

SiC(0001) 上の III / IV 族元素 2D オーバレイヤの STM / STS 研究

34

〃

安藤

文欣

〃

〃

〃

Wenxin Li

70

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 201835

Cu(001) 面上に形成した金属窒化物単原子層の構
山田
造 (2)

正理

中央大学

理工学部

Structure of monolayer metal nitrides on Cu(001) (2)Masamichi Yamada

36

金属／半導体表面上への超薄膜およびナノ構造
薄膜の形成とその磁化ダイナミックスの観測河村紀一

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

37

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

担当所員：長谷川

Chuo University

幸雄

38

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

JAIST

39

〃

米澤

隆宏

北陸先端科学技 先端科学技術研
術大学院大学
究科

Takahiro Yonezawa

JAIST

担当所員：リップマー

〃

ミック

40

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

41

〃

穴田

柚冬

東北大学

大学院工学研究
科

Yuto Anada

Tohoku university

新規 HfO2 基強誘電体薄膜における負の電気熱量
山田
効果の実験的検証研究

智明

名古屋大学

大学院工学研究 Experimental study on negative electrocaloric effect in HfO2based ferroelectric thin films
科

Tomoaki Yamada

Nagoya University

太田

悠登

名古屋大学

工学部

Yuto Ota

Nagoya University

加藤

浩之

大阪大学

大学院理学研究 Proton Transfer and Property Control for Heterogeneous
Bilayer科

Hiroyuki Kato

Osaka University

42
43

〃

担当所員：吉信
44〃

淳

異種二分子膜間のプロトン移動と物性の制御担当所員：秋山〃英文45

GaN 半導体における光起電力と電気的性質の相
関について

小柴

俊

香川大学

大学院工学研究
Correlation of photovoltaic electrical properties as for GaN
科Shun Koshiba

Kagawa University

46

オキシルシフェリン励起状態におけるタンパク
質効果の解明

樋山

みやび

群馬大学

大学院理工学府

Elucidation of protein effect for electronic excited state ofoxylucifein

Miyabi Hiyama

Gunma University

47

GaPN/GaP 量子井戸構造におけるアップコンバ
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 Up-conversion luminescence from GaPN/GaP quantum
structures
究科

Hiroyuki Yaguchi

Saitama University

No.

課題名

48

〃

高宮

健吾

埼玉大学

総合技術支援センター〃

Kengo Takamiya

Saitama University

49

〃

高橋

渉

埼玉大学

大学院理工学研
究科〃

Wataru Takahashi

Saitama University

50

〃

小笠原

裕

香川大学

大学院工学研究
科〃

Yutaka Ogasawara

Kagawa University

勇人

香川大学

工学部

Optical properties of spin-polarized light-emitting diodes using
Hayato Miyagawa
diluted magnetic semiconductor GaGdAs

Kagawa University

51

氏名

希薄磁性半導体 GaGdAs を用いたスピン LED の宮川
光学特性評価

所属

Title

Name

Organization

52

〃

加藤

昇

香川大学

大学院工学研究
科〃

Sho Kato

Kagawa University

53

〃

高藤

誠

香川大学

大学院工学研究科〃

Makoto Takafuji

Kagawa University

小柴

俊

香川大学

大学院工学研究 Optical characteristic evaluation of GaN/AlN semiconductor
superlattice
科

Shun Koshiba

Kagawa University

則包

猛

香川大学

大学院工学研究
科〃

Takeru Norikane

Kagawa University

静岡大学

学術院理学領域

Physical properties in rare earth intermetallic compounds athigh magnetic fields in low temperature

Takao Ebihara

Shizuoka University

ジュマエダ
ジャトミカ

静岡大学

大学院自然科学
教育部〃

Jumaeda Jatmika

Shizuoka University

久我

健太郎

理化学研究所

放射光科学研究
Crystal strain associated with valence transitionセンター

Kentaro Kuga

RIKEN

54

GaN/AlN 半導体超格子の光学特性評価

55〃

担当所員：中辻56

知

希土類金属間化合物の強磁場程温物性研究

ISSP Activity Report 2018

57
58

〃
価数相転移に伴う格子歪みの研究

担当所員：川島

海老原

孝雄

直輝

59

蜂の巣格子磁性体 RuCl3 の磁場中励起鈴木隆史

兵庫県立大学

大学院工学研究 Dynamical properties of honeycomb-lattice magnet RuCl3 inmagnetic fields
科

Takafumi Suzuki

University of Hyogo60

テンソルネットワーク法の開発

原田

健自

京都大学

大学院情報学研
Development of tensor network method
究科

Kenji Harada

Kyoto University

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
Science

担当所員：上床

71

61

美也

YbH2+x の磁性と伝導

72

No.
62

ISSP Activity Report 2018

63
64
65

課題名
ハーフホイスラー化合物の圧力下輸送特性〃
高圧下における Eu 化合物の価数転移の探索
〃

氏名

所属

Title

Name

Organization

竹中

崇了

東京大学

大学院新領域創Transport properties of half-Heusler compounds
成科学研究科

Takaaki Takenaka

The University of
Tokyo

松浦

康平

東京大学

大学院新領域創成科学研究科

Kohei Matsuura

The University of
Tokyo

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

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〃
Investigation of valence transition on Eu compounds underhigh pressure〃

66

ウラン化合物の磁性の圧力効果

67

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

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68

有機分子性導体の高圧物性の研究

鳥塚

潔

明治大学

総合数理学部

Studies on High Pressure Properties of Organic Molecular
Conductors

Kiyoshi Torizuka

Meiji University69

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
Ryukyus70

多形化合物 RIr2Si2(R= 希土類）の結晶育成と物
質評価 4

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) 4
研究科

Toru Shigeoka

Yamaguchi University

71

〃

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

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

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

大学院創成科学研究科

Toru Shigeoka

Yamaguchi University

Ryoma Tsunoda

Niigata University

72
73
74
75

三元化合物 PrPd2Si2 の結晶育成 2〃多形化合物 RIr2Si2(R= 希土類）の磁気特性 2〃〃

大学院創成科学
Crystal growth of ternary compound PrPd2Si2 2
研究科〃
Magnetic characteristics of polymorphic compounds
RIr2Si2(R=rare earth) 2〃76

Ce3Pd4 の圧力下電気抵抗測定

角田

竜馬

新潟大学

大学院自然科学Electrical resistivity measurement of Ce3Pd4 under pressure
研究科

77

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

伊覇

航

琉球大学

大学院理工学研
究科

78〃

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

Wataru Iha

Kagoshima University

University of the
Ryukyus
University of the
Ryukyus

No.

課題名

79

鉄カルコゲナイド系化合物の単結晶育成とその
圧力効果

久田

旭彦

徳島大学

大学院社会産業 Single-crystal growth and pressure-effect study of ironchalcogenide compound
理工学研究部Akihiko Hisada

Tokushima University

80

Pd 系ホイスラー合金の磁気および構造の相転移
温度の高圧効果

安達

義也

山形大学

大学院理工学研 Pressure effect of the magnetic and structural phase transition
Yoshiya Adachi
temperature for the Pd-Heusler alloys
究科

Yamagata University

81

〃

福本

拓実

山形大学

大学院理工学研
究科

Yamagata University

辺土

正人

琉球大学

理学部

82

Eu 化合物の圧力誘起近藤状態の探索

氏名

所属

ISSP Activity Report 2018

Kanazawa University

金沢大学

大学院自然科学
研究科

Kae Maeta

Kanazawa University

政司

金沢大学

理工研究域環境 Anisotropic magnetovolume effect of rare earth Lavescompound RAl2
デザイン学系

Masashi Ohashi

Kanazawa University

西川

智生

金沢大学

自然科学研究科
環境デザイン学専攻

Tomoki Nishikawa

Kanazawa University

藤原

哲也

山口大学

大学院創成科学 Specific heat measurement under magnetic field of HoRh2Si2
single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

Shu Yamamoto

Yamaguchi University

琉球大学

理学部

84

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

85

〃

前田

加衣

希土類ラーベス化合物 RAl2 の異方的磁気体積効
大橋
果

HoRh2Si2 単結晶の磁場中比熱測定

University of the
Ryukyus

Masashi Ohashi

進弥

88

Searching for pressure-induced Kondo state on Eu compounds Masato Hedo

理工研究域環境 Pressure and field induced quantum phase transition instrongly correlated electron systems
デザイン学系

松田〃

Takumi Fukumoto

Organization

University of the
Ryukyus

〃

87

〃

Name

Shinya Matsuda

83

86

Title

〃

〃

〃

89

〃

山本

嵩

山口大学

理学部

90

HoRh2Si2 の La 置換系化合物の単結晶育成 (2)

藤原

哲也

山口大学

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

Yamaguchi University

91

〃

山本

嵩

山口大学

理学部

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学 Resistivity measurements under hipressures of HoRh2Si2 single
Tetsuya Fujiwara
crystal
研究科

Yamaguchi University

山本

嵩

山口大学

理学部

Shu Yamamoto

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Resistivity measurement of EuMn2Ge2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

山本

嵩

山口大学

理学部

Shu Yamamoto

Yamaguchi University

92
93
94

73

95

HoRh2Si2 単結晶の高圧力下電気抵抗測定〃
EuMn2Ge2 単結晶の電気抵抗測定
〃

〃

〃

〃

〃

Shu Yamamoto

74

No.

課題名

氏名

所属

Title

ISSP Activity Report 201896

物性測定に与える圧力媒体効果

村田惠三

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

97

リン系充填スクッテルダイト超伝導体の磁気特
性 II

川村

幸裕

室蘭工業大学98

BiS2 系化合物超伝導体の圧力効果

加瀬

直樹

99

MnNiGe-CoNiGe 系化合物の圧力下磁化率測定

伊藤

100

〃

Name

Organization

Keizo Murata

Osaka University of
Economics and Law

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

Yukihiro Kawamura

Muroran Institute ofTechnology

東京理科大学

理学部

Naoki Kase

Tokyo University of
Science昌和

鹿児島大学

学術研究院理工
Magnetic susceptibility of MnNiGe-CoNiGe under pressure
学域理学系

Masakazu Ito

Kagoshima University

恩田

圭二朗

鹿児島大学

大学院理工学研
究科

Keijiro Onda

Kagoshima University

101 Yb(Co1-xIrx)2Zn20 の 基本物性評価 II

阿曽

尚文

琉球大学

理学部

Naofumi Aso

University of the
Ryukyus

102

佐藤

信

琉球大学

大学院理工学研
究科

Shin Sato

University of the
Ryukyus

103 YbCo2Zn20 置換系試料の圧力効果 II

阿曽

尚文

琉球大学

理学部

Naofumi Aso

University of the
Ryukyus

104

〃

盛島

実竜

琉球大学

大学院理工学研
究科〃

Miiru Morishima

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

中島

美帆

信州大学

理学部

Pressure effect in CeT2X8 ( T: transition metal element, X: Al,Ga)

Miho Nakashima

Shinshu University

106〃

セリウム化合物 CeT2X8(T: 遷移金属元素，
X:Al,Ga) における高圧下物性

Pressure effect of the BiS2-based superconductors〃
Evaluation of fundamental physical properties in
Yb(Co1-xIrx)2Zn20 II〃
Pressure effect of doped YbCo2Zn20 systems II

107

〃

矢口

達志

信州大学

理学部

〃

Tatsushi Yaguchi

Shinshu University

108

〃

米原

直哉

信州大学

理学部

〃

Naoya Yonehara

Shinshu University

芝内

孝禎

東京大学

大学院新領域創Transport properties of half-Heusler compounds
成科学研究科Takasada Shibauchi

The University ofTokyo

109 ハーフホイスラー化合物の圧力下輸送特性
110

MnCoGe の磁気特性及び相変態に及ぼす熱処理
効果

三井

好古

鹿児島大学

大学院理工学研 Annealing effects on magnetic properties and phasetransformation in MnCoGe
究科

Yoshifuru Mitsui

Kagoshima University

111

〃

野口

滉平

鹿児島大学

理学部

Kohei Noguchi

Kagoshima University

112

ウラン化合物強磁性体 URh6X4 (X = Si, Ge) の
圧力効果

芳賀

芳範

日本原子力研究 先端基礎研究セ
Pressure effects on ferromagnetism in URh6X4 (X = Si, Ge)
開発機構
ンター

Yoshinori Haga

Japan Atomic Energy
Agency

〃

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018

113 CrAlGe 系化合物の磁気特性

三井

好古

鹿児島大学

大学院理工学研
Magnetic properties of CrAlGe-based compound
究科

Yoshifuru Mitsui

Kagoshima University

114

増満

勇人

鹿児島大学

大学院理工学研
究科

Hayato Masumitsu

Kagoshima University

115 高圧力下における Fe 基磁性体の磁気特性

小山

佳一

鹿児島大学

大学院理工学研
Magnetic properties of Fe-based magnets under high pressures Keiichi Koyama
究科

Kagoshima University

116

尾上

昌平

鹿児島大学

大学院理工学研
究科

Masahira Onoue

Kagoshima University

117 Mn-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

118〃

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 University119

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

120

〃

垣花

将司

琉球大学

大学院理工学研
究科

121 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

122

〃

川勝

祥矢

琉球大学

大学院理工学研究科

123

新しい Ce および La 三元系化合物の圧力下比熱
測定

本山

岳

島根大学

124

〃

坪内

将紘

狩野

みか

〃

〃

125 DAC を用いた高圧下 X 線回折
担当所員：尾崎126〃〃

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

University of the
Ryukyus

Masashi Kakihana

University of the
Ryukyus

Takao Nakama

University of the
Ryukyus

Shoya Kawakatsu

University of the
Ryukyus

大学院総合理工 Specific heat measurements of new Ce and La ternarycompounds under pressure
学研究科

Gaku Motoyama

Shimane University

島根大学

総合理工学部

Masahiro Tsubouchi Shimane University

日本工業大学

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

〃
Pressure effect on transport properties of transition metalcompounds〃〃

Mika Kano

Nippon Institute ofTechnology

Analysis and control of crystal and electronic structures of
北陸先端科学技 マテリアルサイgroup IV 2D materials through concerted collaboration of
術大学院大学
エンス系
experiment and theory

Antoine Fleurence

JAIST

北陸先端科学技 先端科学技術研
術大学院大学
究科

Hirokazu Nitta

JAIST

泰助

実験と計算の協奏による IV 族二次元材料の構造・ アントワーヌ
フロランス
電子状態解析及び制御

127

75

担当所員：益田

〃

〃
隆嗣

新田

寛和

〃

76

No.

課題名

氏名

所属

Title

ISSP Activity Report 2018

Quantum critical fluctuations in heavy fermion
superconductors

Name

Organization

128 重い電子系超伝導体における量子臨界揺らぎ

横山

淳

茨城大学

理学部

129

鈴木

康平

茨城大学

大学院理工学研
究科

S=1 スピンダイマー物質 K2NiMo2O8 と Co ダイ
那波
マー磁性体 CaCoV2O7 の磁性研究

和宏

東北大学

多元物質科学研 Magnetic properties in S = 1 spin dimer compound K2NiMo2O8
Kazuhiro Nawa
and Co dimer magnet CaCoV2O7
究所

Tohoku University

Ryo Murasaki

Tohoku University

130

〃

〃

Makoto Yokoyama

Ibaraki University

Kohei Suzuki

Ibaraki University

131

〃

村崎

遼

東北大学

大学院理学研究科132

異方的三角格子 Ca3ReO5Cl2 単結晶試料の軸立
て

那波

和宏

東北大学

多元物質科学研 Alignment of single crystalline samples of Ca3ReO5Cl2 withanisotropic triangular lattice
究所

Kazuhiro Nawa

Tohoku University

133

硫黄置換により誘起される FeTe1-xSx の超伝導特
山中
性

隆義

東京理科大学

理工学部

Takayoshi Yamanaka

Tokyo University of
Science〃Superconductivity in sulfur substituted FeTe1-xSx

134

〃

矢口

宏

東京理科大学

理工学部〃

Hiroshi Yaguchi

Tokyo University of
Science

135

〃

梅澤

直樹

東京理科大学

大学院理工学研
究科〃

Naoki Umezawa

Tokyo University of
Science

Cu3O8 三量体をもつ Na2Cu3Ge4O12 の単結晶評
安井
価

幸夫

明治大学

理工学部

Characterization of Single Crystals of Cu3O8 trimer System
Na2Cu3Ge4O12

Yukio Yasui

Meiji University

尚文

琉球大学

理学部

Specic heat measurement at very low temperature on
Yb(Co1-xIrx)2Zn20

Naofumi Aso

University of the
Ryukyus

琉球大学

大学院理工学研
究科

Chousei Zukeran

University of the
Ryukyus

琉球大学

理学部

Naofumi Aso

University of the
Ryukyus

琉球大学

大学院理工学研
究科

Masatsugu
Moromizato

University of the
Ryukyus

Masato Hagihara

KEK

Taro Nakajima

RIKEN

Alignment of Ce5Si3 single crystals by high-energy X-ray Lauediffraction II

Riki Kobayashi

University of the
Ryukyus

Evaluation of single crystal quality of non-centrosymmetricsuperconductors

Hazuki Furukawa

Ochanomizu
University

136

137 Yb(Co1-xIrx)2Zn20 の極低温比熱測定

阿曽

138

瑞慶覧

〃

139 Yb1-xLuxCo2Zn20 の極低温比熱測定

阿曽

140

諸見里

長星

〃

真嗣

Specic heat measurement at very low temperature on
Yb1-xLuxCo2Zn20〃

雅人

高エネルギー加 物質構造科学研
Checking crystallization of three legged ladder Cu3(OH)4SO4
速器研究機構究所

中島多朗

理化学研究所

創発物性科学研
Crystal alignment for neutron scattering experiment
究センター

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 II

小林

理気

琉球大学

理学部

144 空間反転対称性の破れた超伝導体の結晶性評価

古川

はづき

お茶の水女子大
基幹研究院
学

141

３本足磁性体 Cu3(OH)4SO4 の単結晶試料の結晶
萩原
性の確認

尚文

〃

142 中性子散乱実験のための結晶方位決定
143

No.

課題名

145

〃

担当所員：嶽山
146

氏名
理化学研究所

創発物性科学研
究センター

晴彦

上智大学

理工学部

左右田

稔

Title

Name

〃

Minoru Soda

Organization
RIKEN

正二郎

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

担当所員：金道所属

Ultra-high magnetic eld magneto-optical approach to the studyof magnetization plateau in Cu3Mo2O9 using vertical singleHaruhiko Kuroe
turn coil system III

Sophia University

浩一

ISSP Activity Report 2018147

アンダードープ Bi-2223 における超伝導揺らぎ
の研究

渡辺

孝夫

弘前大学

A study of the superconducting fluctuation using
大学院理工学研
magnetotransport measurements for underdoped Bi-2223
究科
single crystals

Takao Watanabe

Hirosaki University

148

〃

川村

圭輔

弘前大学

大学院理工学研
究科

Keisuke Kawamura

Hirosaki 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

Makoto Yokoyama

Ibaraki Univeristy

Ryoma Sugawara

Ibaraki Univeristy

Masahiko Hiroi

Kagoshima University

149 サブメガガウス領域での希土類物性研究

海老原

150

〃

村串

拓真

静岡大学

大学院総合科学技術研究科

151

重い電子系化合物が示す量子臨界現象と磁気相
関

横山

淳

茨城大学

理学部

152

〃

菅原

良馬

茨城大学

理学部

廣井

政彦

鹿児島大学

大学院理工学研 Physical properties of Heusler compounds Fe3-xMnxSi underhigh magnetic fields
究科

153 ホイスラー化合物 Fe3-xMnxSi の強磁場物性

孝雄

〃

〃
Quantum critical phenomena and magnetic corelations inheavy-fermion compounds〃

154

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 pseudogap 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

155

〃

川村

圭輔

弘前大学

大学院理工学研
究科

Keisuke Kawamura

Hirosaki University

Yb4TGe8(T: 遷移金属 ) およびその周辺物質の強道岡
磁場磁化測定千城

京都大学

大学院理学研究 High-field magnetization measurements of Yb4TGe8(T: transition metal) and their family compounds
科

Chishiro Michioka

Kyoto University

Masahito Hikiji

Kyoto University

156

〃

77

157

〃

引地

将仁

京都大学

大学院理学研究科

158

溶液法を用いて作成したカゴメ格子反強磁性体
の磁性

植田

浩明

京都大学

大学院理学研究 Magnetism of kagome lattice fluorides synthesized using
solution method
科

Hiroaki Ueda

Kyoto university

159

〃

今西

茂

京都大学

理学部

Shigeru Imanishi

Kyoto University

〃

〃

78
ISSP Activity Report 2018

No.

課題名

160

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

Hikomitsu Kikuchi

University of Fukui

161

〃

春木

晶尋

福井大学

工学部

Akihiro Haruki

University of Fukui(U,Th)Be13, U(Pd,Ni)2Al3, U2PtC2 及び関連物質
清水における重い電子系化合物強磁場物性

悠晴

東北大学

金属材料研究所

Yusei Shimizu

Tohoku University

162

氏名

所属

Title

〃
High-field physical properties of (U,Th)Be13, U(Pd,Ni)2Al3,
U2PtC2, and other heavy-fermion systems

Name

Organization

163 MnNiGe-CoNiGe 系化合物の高磁場磁歪測定

伊藤

昌和

鹿児島大学

学術研究院理工 Magnetic strain of MnNiGe-CoNiGe system in high magnetic
field
学域

Masakazu Ito

Kagoshima University

164

恩田

圭二朗

鹿児島大学

大学院理工学研
究科

Keijiro Onda

Kagoshima University

165 BiS2 系化合物超伝導体の上部臨界磁場

加瀬直樹

東京理科大学

理学部

Naoki Kase

Tokyo University of
Science

166 金属ナノ結晶集合体の磁化特性

稲田

貢

関西大学

システム理工学
Magnetic properties of metal nanocrystal assemblies
部

Mitsuru Inada

Kansai University

167

〃

米澤

諒

関西大学

システム理工学部

Ryo Yonezawa

Kansai University

168

Topological insulator SmB6,YbB12 の磁化特性
と比熱

伊賀

文俊

茨城大学

理学部

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

Ibaraki University

169

〃

松浦

航

茨城大学

大学院理工学研
究科

文俊

茨城大学

理学部

貴大

茨城大学

理学部

静岡大学

学術院理学領域170〃

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

171

〃

担当所員：徳永

山田〃
Upper critical field of the BiS2-based superconductors〃〃
Magnetic and thermal properties of rare earth hexa-borides
and dodeca-borides produced by high pressure synthesis〃

Wataru Matsuura

Ibaraki University

Fumitoshi Iga

Ibaraki University

Takahiro Yamada

Ibaraki University

Takao Ebihara

Shizuoka University

将史

172 重い電子系における強磁場中の電子状態研究

海老原

孝雄

Electronic states at high magnetic fields in Heavy Fermion
systems173

パルス電磁石を用いた単結晶 BiFeO3 の電気磁気
河智
効果の研究

史朗

東京工業大学

元素戦略研究セ Study of magnetoelectric effect in single crystal BiFeO3 using
pulse magnet
ンター

Shiro Kawachi

Tokyo Institute ofTechnology

174

キャリア制御した Cd3As2 薄膜における表面量子
打田
ホール状態の解明

正輝

東京大学

大学院工学系研 Investigation of surface quantum Hall states in Cd3As2 films
with reduced carriers
究科

Masaki Uchida

The University of
Tokyo

175

磁場誘起マルテンサイト変態における核生成と成長の実空間観察

甲大

京都大学

大学院工学研究 In-situ observations of nucleation and growth of magneticfield-induced martensite
科

Kodai Niitsu

Kyoto University

新津

No.

課題名

氏名

所属

176

〃

矢野

凱己

京都大学

大学院工学研究
科

177

磁気光学顕微鏡による超伝導体中の量子渦の実空間非平衡ダイナミクス観測手法の確立

黒川

穂高

東京大学

大学院総合文化 Observing the real-space nonequilibrium dynamics of vortices
in superconductor with a magneto-optical microscope
研究科

178

高移動度 EuTiO3 薄膜における磁気量子振動の観
打田
測

正輝

東京大学

大学院工学系研 Observation of quantum magnetic oscillations in high-mobility
Masaki Uchida
EuTiO3 thin films
究科

The University of
Tokyo

Title

Name

Organization〃

Yoshiki Yano

Kyoto University

Hodaka Kurokawa

The University of
Tokyo

ISSP Activity Report 2018

79

179

〃

ジュマエダ
ジャトミカ

静岡大学

大学院自然科学
教育部〃

Jumaeda Jatmika

Shizuoka University

180

〃

鈴木

文登

静岡大学

大学院総合科学技術研究科〃

Fumito Suzuki

Shizuoka University

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 Ce2MgGe2 の強磁場磁化

広瀬

雄介

新潟大学

理学部物理学科 High-field magnetization of Ce2MgGe2

Yusuke Hirose

Niigata University

183

〃

本多

史憲

東北大学

金属材料研究所

Fuminori Honda

Tohoku University

184

逆スピネル M2XO4 (M=Mn,Co, X=Ti,Sn) の強磁場磁化過程の研究

太田寛人

東京農工大学

大学院工学府

Hiroto Ohta

Tokyo Universityof Agriculture andTechnology

185

〃

行田

祥一郎

東京農工大学

大学院工学府〃Shoichiro Gyoda

186

〃

徳永

柊介

東京農工大学

工学部〃

Shuusuke Tokunaga

187 結晶構造が特異な磁性体の強磁場磁化過程

香取浩子

東京農工大学

大学院工学研究 High-field magnetization process of magnetic material withunique crystal structure
院

Hiroko Katori

188

〃

濱住

莉加

東京農工大学

大学院工学府〃

Rika Hamazumi

189

〃

羽鳥

滋

東京農工大学

工学部〃

Shigeru Hatori

Tokyo Universityof Agriculture andTechnology

190

ホイスラー合金 NiCoMnGa のパルス強磁場下磁
木原
歪測定

工

東北大学

金属材料研究所

Takumi Kihara

Tohoku University

191

フェルミエネルギーを制御した多層ディラック
電子系の強磁場輸送特性

酒井

英明

大阪大学

大学院理学研究 High-field magneto-transport properties for a multilayered
Dirac fermion system with tunable Fermi energy
科

Hideaki Sakai

Osaka University

192

〃

西村

拓也

大阪大学

大学院理学研究
科

Takuya Nishimura

Osaka University〃
Study of high-field magnetization curves of inverse spinel
M2XO4 (M=Mn,Co, X=Ti,Sn)

Magnetostriction Measurements under the Pulsed High
Magnetic Fields in Heusler Alloy NiCoMnGa〃

Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology

80
ISSP Activity Report 2018

No.

課題名

193

〃

藤村

飛雄吾

大阪大学

大学院理学研究科〃

Hyugo Fujimura

Osaka University

194

〃

中川

賢人

大阪大学

理学部

〃

Kento Nakagawa

Osaka University

195

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

東京大学

大学院新領域創 High-field magnetoelectric properties of square-cupola-based
antiferromagnets
成科学研究科

Kenta Kimura

The University of
Tokyo

芳賀

芳範

日本原子力研究 先端基礎研究セ Transport characteristics of heavy fermion uranium
compounds under high magnetic field
開発機構
ンター

Yoshinori Haga

Japan Atomic Energy
Agency196 重い電子系ウラン化合物の強磁場伝導特性

氏名

マクシミリア
パイロクロア型モリブデン酸化物
197 (Nd1-xCax)2Mo2O7 の精密バンドフィリング制御 ン ヒルシュによる巨大異常ホール効果の探索
ベルガー

所属

Title

Name

Organization

理化学研究所

創発物性科学研 Precise band-filling controlled of large anomalous Hall effects
in pyrochlore-type molybdates (Nd1-xCax)2Mo2O7
究センター

Maximilian
Hirschberger

RIKEN

紘行

北海道大学

大学院理学研究 High-field magnetization measurements on kagome lattice
antiferromagnets Li2Cr3SbO8
院

Hiroyuki Yoshida

Hokkaido University

石井

裕人

北海道大学

大学院理学研究院

Yuto Ishii

Hokkaido Universiry

近藤半導体 (Yb,R)B12、価数揺動物質 (Y,Tm)B6
200 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

201

担当所員：松田198

康弘

カゴメ格子反強磁性体 Li2Cr3SbO8 の強磁場磁化
吉田
過程測定

199

〃

〃

中山

裕之

茨城大学

理学部

202

キラル極性磁性体 Ni2InSbO6 の磁気相転移に伴う光学スペクトル変化

荒木

勇介

東京大学

203

〃

渡辺

義人

204 二次元超伝導体 NbSe2 薄膜の上部臨界磁場測定

松岡

205 分子内エキサイプレックス蛍光の超強磁場効果
206
207

〃

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
Hiroyuki Nakayama

Ibaraki university

大学院新領域創
Magneto-optical effect in a chiral polar magnet Ni2InSbO6
成科学研究科

Yusuke Araki

The University of
Tokyo

東京大学

大学院新領域創成科学研究科Yoshito Watanabe

The University of
Tokyo

秀樹

東京大学

大学院工学系研 Upper critical field measurement of two dimensional
superconducting NbSe2 thin films
究科

Hideaki Matsuoka

The University of
Tokyo

谷本

能文

広島大学

大学院理学研究 Effect of ultra-high magnetic field on the intra-molecular
exciplex fluorescence科

Yoshifumi Tanimoto

Hiroshima University

キラル極性磁性体 Ni2InSbO6 の磁気相転移に伴う光学スペクトル変化

有馬

孝尚

東京大学

大学院新領域創
Magneto-optical effect in a chiral polar magnet Ni2InSbO6
成科学研究科Takahisa Arima

The University of
Tokyo

〃

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 ofTokyo

担当所員：小濱〃

Ibaraki University

芳允

〃

〃

No.

課題名

氏名

所属

208

〃

海本

祐真

東京大学

大学院新領域創成科学研究科209

レーザー励起光電子顕微鏡を用いた抵抗変化メ
モリ材料のナノ物性計測

木下

健太郎

東京理科大学

理学部

210

〃

奥田

裕司

東京理科大学

大学院理学研究
科

211

〃

川並

将太朗

東京理科大学

212

〃

中畝

悠介

213

〃

清水

214

〃

215

Title

Name

Organization

Yuma Umimoto

The University ofTokyo

Kentaro Kinoshita

Tokyo University of
Science〃

Yuji Okuda

Tokyo University of
Science

大学院理学研究
科〃

Shotaro Kawanami

Tokyo University of
Science

東京理科大学

大学院理学研究科〃

Yusuke Nakaune

Tokyo University of
Science敦史

東京理科大学

大学院理学研究科〃

Atsushi Shimizu

Tokyo University of
Science齋藤修平

東京理科大学

大学院理学研究科〃

Shuhei Saitoh

Tokyo University of
Science

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

理工学部物理学 Modification of Topological surface states upon adsorption oforganic semiconductors.
科

Kaname Kanai

Tokyo University of
Science

216

〃

北澤

辰也

東京理科大学

理工学部物理学科

Tatsuya Kitazawa

Tokyo University of
Science217

低対称性半導体基板上の Bi 擬１次元構造におけるスピン偏極電子状態

大坪

嘉之

大阪大学

大学院生命機能 Spin-polarized electronic states on quasi-1D Bi fabricated on
low-symmetric semiconductor substrates
研究科

Yoshiyuki Ohtsubo

Osaka University

218

〃

中村

拓人

大阪大学

大学院理学研究
科

Takuto Nakamura

Osaka University219

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

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

220

遷移金属ダイカルコゲナイド VTe2 の時間分解角三石
度分解光電子分光夏樹

東京大学

大学院工学系研 Time-resolved angle-resolved photoemission study ontransition metal dichalchogenides VTe2
究科

Natsuki Mitsuishi

The University of
Tokyo

221

極性ワイル半金属 MoTe2 におけるスピン偏極し坂野
たトポロジカル表面状態の観測

昌人

東京大学

大学院工学系研 Observation of spin-polarized topological surface state onpolar Weyl semimetal MoTe2
究科

Masato Sakano

The University of
Tokyo

深田 和宏

東京大学

大学院工学系研
究科

Kazuhiro Fukada

The University of
Tokyo

高橋

東京大学

大学院工学系研 Observation of superconducting energy gap in misfit
superconductors
究科

Kengo Takahashi

The University ofTokyo

担当所員：辛ISSP Activity Report 2018

222

〃

埴

〃

81

223 ミスフィット超伝導体の超伝導ギャップの観測

健吾

Nano physical property measurement of resistance change
memory material using laser excited photo-emission
microscope

〃

〃

〃

82

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018

224

トポロジカル絶縁体 - 強磁性体界面におけるスピ小林
ン偏極電子状態の観測

正起

東京大学

大学院工学系研 Observation of spin-polarized electronic state at an interface
between topological insulator and ferromagnet
究科

225

原子層タリウム単結晶のスピン偏極電子バンド
測定

坂本

一之

千葉大学

大学院工学研究 Investigation of the spin-polarized electronic band structure of
Kazuyuki Sakamoto
atomic layer thallium single crystal
院

226

トポロジカル絶縁体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

227

〃

伊藤

寛史

筑波大学

大学院数理物質科学研究科

遷移金属インターカレート 1T-TiS2 のスピン分解伊藤
角度分解光電子分光

孝寛

名古屋大学

シンクロトロン Spin-resolved angle-resolved photoemission study of transition
Takahiro Ito
光研究センター metal intercalated 1T-TiS2

Nagoya University

鍋平

直輝

名古屋大学

工学部

Naoki Nabehira

Nagoya University

230 次世代レーザーとレーザー加工の基礎技術研究

吉富

大

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

Dai Yoshitomi

National Institute ofAdvanced Industrial
Science and Technology

231

〃

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

232

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

233

青色半導体レーザー用ファイバ型光コンバイナ
の開発

藤本

靖

千葉工業大学

工学部

Development on fiber power combiner for GaN semiconductor
Yasushi Fujimoto
lasersChiba Institute ofTechnology (CIT)

関西学院大学

理工学部

Development of a Er-doped fiber laser system

Junko Omachi

Kwansei Gakuin
University

228
229

〃

担当所員：小林〃〃

The University ofTokyo
Chiba University

Shinji Kuroda

University of Tsukuba

Hiroshi Ito

University of Tsukuba

洋平

234 エルビウムドープファイバー発振器の作製担当所員：板谷

Observation of surface state on thin films of topologicalinsulator using laser photoemission spectroscopy

Masaki Kobayashi

大間知

潤子

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

治郎

235

超高速レーザー分光法を用いた弾性波伝播の観
測

牧野

哲征

福井大学

学術研究院工学 Observation of very short stress pulses with ultrafast laser
spectroscopy
系部門

Takayuki Makino

University of Fukui

236

〃

竹内

智哉

福井大学

工学部

Tomoya Takeuchi

University of Fukui

237

超高速レーザー分光法を用いた弾性波伝播の観
測

山出

拓史

福井大学

大学院工学研究 Observation of very short stress pulses with ultrafast laser
spectroscopy
科

Takuji Yamade

University of Fukui

〃

No.

課題名

氏名

所属

Title

Name

Organization

一般研究員・大阪大学 先端強磁場科学研究センター（General Researcher・Center for Advanced High Magnetic Field Science Osaka University）
No.

課題名

氏名

所属

Title

Name

Organization

担当：萩原 政幸（大阪大学）
1

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

2

〃

大貫

惇睦

琉球大学

理学部

3

パルス強磁場を用いた高圧下 ESR 装置の開発と
応用

櫻井

敬博

神戸大学

4

カゴメストリップ鎖の不純物誘起磁化プラトー

浅野

貴行

5

カゴメ格子反強磁性体 CaCu3(OH)6Cl2・0.6H2O
吉田の強磁場下 ESR 測定

67〃
Ce2MgX2(X=Si,Ge) の強磁場磁気抵抗

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

ISSP Activity Report 2018

Tetsuya Takeuchi

Osaka University

Yoshichika Onuki

University of the
Ryukyus

研究基盤センタ Development and application of high-pressure ESR systemusing pulse high fieldーTakahiro Sakurai

Kobe University

福井大学

学術研究院工学 Impurity induced magnetization plateau in the kagome strip
chain
系部門

Takayuki Asano

University of Fukui

紘行

北海道大学

大学院理学研究 High-field ESR measurements on kagome lattice
antiferromagnets CaCu3(OH)6Cl2・0.6H2O
院

Hiroyuki Yoshida

Hokkaido University

石井

裕人

北海道大学

大学院理学研究院

Yuto Ishii

Hokkaido University

広瀬

雄介

新潟大学

理学部

Yusuke Hirose

Niigata University

Fuminori Honda

Tohoku University

工学研 Study on time dependence of martensitic transformation using
Takashi Fukuda
pulsed high magnetic field

Osaka University〃〃
Magnetoresistance of Ce2MgX2 (X=Si,Ge) at high-magnetic
field

8

〃

本多

史憲

東北大学

金属材料研究所

9パルス強磁場によるマルテンサイト変態の時間依存性に関する研究

福田

隆

大阪大学

大学院
究科

10

フラストレート系有機磁性体の強磁場磁性山口博則

大阪府立大学

大学院理学系研 High-field magnetic properties of frustrated organic radical
compounds
究科

Hironori Yamaguchi

Osaka Prefecture
University11

反強磁性絶縁体 BaMn2Pn2 の高磁場における磁 KHUONG
気輸送特性
KIM HUYNH

東北大学

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

Khuong Kim Huynh

Tohoku University12

１次元配位高分子磁性体の合成と構造、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 quantum magnetism of onedimensional transition metal coordination polymers
究科

Zentaro Honda

Saitama University13

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

大学院理学系研
Development of the cryostat for pulsed high magnetic field
究科

Satoru Noguchi

Osaka Prefecture
University

〃

83

14

〃

松山

友樹

大阪府立大学

生命環境科学域〃

Tomoki Matsuyama

Osaka Prefecture
University

15

〃

土田

稜

大阪府立大学

生命環境科学域〃

Ryo Tsuchida

Osaka Prefecture
University

84

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018

Syou Maki

Osaka Ohtani
University

大学院理学研究 Relationship between zero-field splittings and dynamic
magnetism of monocuclear transition metal complexes
科

Takamitsu Fukuda

Osaka University

大阪大学

大学院理学研究科

Toshiharu Ishizaki

Osaka University

隆広

名古屋大学

大学院工学研究 High field transport measurements on antiferromagnet
CaMn2Bi2 with corrugated honeycomb structure
科

Takahiro Urata

Nagoya University

村川

寛

大阪大学

大学院理学研究 Pulsed magnetic field studies of quantum transport propertiesof Weyl semimetals
科

Hiroshi Murakawa

Osaka University

〃

駒田

盛是

大阪大学

大学院理学研究科〃Moriyoshi Komada

Osaka University

22

〃

横井

滉平

大阪大学

大学院理学研究
科〃

Kohei Yokoi

Osaka University23

傾斜反強磁性を示す層状ディラック電子系物質
の磁化測定

酒井

英明

大阪大学

大学院理学研究 Magnetic measurements on a multilayered Dirac fermion
system hosting canted antiferromagnetic order科

Hideaki Sakai

Osaka University

24

〃

藤村

飛雄吾

大阪大学

大学院理学研究科〃

Hyugo Fujimura

Osaka University

25

〃

中川

賢人

大阪大学

理学部

〃

Kento Nakagawa

Osaka University

26

SmB6 薄膜の強磁場中での磁気抵抗 , ホール効果
宍戸
測定

寛明

大阪府立大学

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

Hiroaki Shishido

Osaka Prefecture
University

27

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 ofTokyo

Tsuyoshi Omi

The University of
Tokyo

16

強磁場環境下におけるタンパク質の結晶化

牧17

単核遷移金属錯体のゼロ磁場分裂と動的磁性の
関係

福田

18

〃

祥

大阪大谷大学

薬学部

貴光

大阪大学

石崎

聡晴

19

歪んだハニカム格子を有す反強磁性体 CaMn2Bi2
浦田
における強磁場輸送特性の研究

20

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

21

Protein crystallization under the magnetic field condition

〃

28

〃

近江

毅志

東京大学

大学院新領域創成科学研究科29

フタロシアニン分子系伝導体で観測される巨大磁気抵抗に対する遷移金属置換の効果

花咲

徳亮

大阪大学

大学院理学研究 Transition-metal Substitution Effect on Giant Magnetoresistance
Noriaki Hanasakiin Phthalocyanine-molecular Conductors
科

Osaka University

30

〃

清水

智可

大阪大学

理学部

Tomoka Shimizu

Osaka University

〃

〃

31

正四角台塔型反強磁性体の強磁場中 ESR 測定

木村

健太

東京大学

大学院新領域創 High-field ESR measurements of square-cupola-based
antiferromagnets
成科学研究科

Kenta Kimura

The University of
Tokyo

32

高温超伝導体のパルス強磁場下電流電圧特性

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

No.

課題名

氏名

33

高磁場下における三角格子反強磁性体 Ag2CrO2単結晶試料の磁気抵抗測定

新見

康洋

34

Ni2MnGa 系新規ホイスラー合金の超磁歪の高速
左近磁場応答性の研究

35

単軸性キラル磁性体の磁気特性測定
クと磁気共鳴測定−

所属

Name

Organization

大阪大学

大学院理学研究 Magnetoresistance measurements of triangular-antiferromagnet
Yasuhiro Niimi
Ag2CrO2 single crystal samples under high magnetic fields
科

Osaka University

拓男

龍谷大学

理工学部

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

島本雄介

大阪府立大学

大学院工学研究科〃

Yusuke Shimamoto

Osaka Prefecture
University

37

CaBaCo2Fe2O7 単結晶試料の強磁場下での磁化・桑原
電気分極・ESR 測定

英樹

上智大学

理工学部

Magnetization, electric polarization, and ESR measurements
for CaBaCo2Fe2O7 single crystals in pulsed high magnetic
fieldsHideki Kuwahara

Sophia University38

強磁場 ESR 測定によるクロムスピネル酸化物の磁気励起の観測

尚次郎

東北大学

金属材料研究所

Observation of the magnetic excitation in the chromium spinel
Shojiro Kimuraoxides by high field ESR measurement

36

−磁気トル

〃

木村

Title

Research on time dependences of magnetstriction of Ni2MnGa
Takuo Sakon
type Heusler alloys

Ryukoku University

Tohoku University

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

ISSP Activity Report 2018

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

〃

萬條

太駿

名古屋大学

大学院工学研究
科〃

Taishun Manjo

Nagoya University

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.

課題名

氏名

所属

85

1

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

2

高温高圧水の固体触媒表面性質への影響の評価

大島

義人

東京大学

3

〃

高橋

侑佳

東京大学

Study of dielectric properties of single-crystalline manganite

Haruka Taniguchi

Iwate University

大学院新領域創 Effects of high temperature and pressure water on solid
catalyst surface
成科学研究科Yoshito Oshima

The University ofTokyo

大学院新領域創成科学研究科Yuka Takahashi

The University of
Tokyo

〃

86

No.
4

ISSP Activity Report 2018

5
6
7
8

課題名

氏名

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〃
新規プロトン - 電子混合伝導体の開発
〃

陸

所属

順一郎
疎桐

Title

Name

Organization

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 Ohtomo

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

〃

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 Ohtomo

The University of
Tokyo

小城

元

東京大学

大学院新領域創成科学研究科Gen Kojo

The University of
Tokyo

順一郎

東京大学

Design of New 3-D and 2-D Electrode Structures and Kinetic
大学院新領域創
Analysis for Ammonia Electrosynthesis with Proton-Conducting Junichiro Ohtomo
成科学研究科
Solid Oxide Fuel Cells

The University of
Tokyo

東京大学

大学院新領域創成科学研究科Li Chien-i

The University ofTokyo

142/5000 プロトン伝導固体酸化物燃料電池によるアンモニア合成のための新しい三次元および 大友
二次元電極構造の設計と動力学解析

9

〃

李

10

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 Ohtomo

The University of
Tokyo

11

〃

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

12

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 Ohtomo

The University of
Tokyo

13

〃

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

14

〃

大友

順一郎

東京大学

大学院新領域創成科学研究科〃

Junichiro Ohtomo

The University of
Tokyo

15

〃

マーチン
ラー

東京大学

大学院新領域創成科学研究科〃Martin Keller

The University of
Tokyo

16

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

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 Ohtomo

The University of
Tokyo

17

〃

長谷川

卓利

東京大学

大学院新領域創成科学研究科

Takuto Hasegawa

The University of
Tokyo

18

アンモニア電解合成における電極触媒の界面構
造制御と電位効果の検討

大友

順一郎

東京大学

大学院新領域創 Consideration between potential effect and control of cathodeJunichiro Ohtomo
catalyst interface structure in electrolytic synthesis of ammonia
成科学研究科The University of
Tokyo

19

〃

山本 和範

東京大学

工学部

Kazunori Yamamoto

The University of
Tokyo

植田

京都大学

大学院理学研究 Magnetic properties and chemical compositions of substituted
ferrites
科

Hiroaki Ueda

Kyoto University

20

元素置換フェライトの磁気特性と化学組成

建毅

〃

ケ

順一郎

浩明

〃

〃

〃

〃

No.

課題名

21

〃

増田

順一

京都大学

大学院理学研究科

22

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

23

〃

織田

耕彦

24

高温高圧水―アルコール混合溶媒を用いる二元
金属ナノ粒子の合成と制御

大島

義人

25

〃

劉

26

ゼオライト触媒を利用した高温高圧水中のバイ
オマス化学変換

大島

27

〃

28

氏名

所属

Title

Organization

Junichi Masuda

Kyoto University

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

東京大学

大学院新領域創成科学研究科Yasuhiko Orita

The University of
Tokyo

東京大学

大学院新領域創 Control of bimetallic nanoparticle synthesis using hightemperature and pressure water-alcohol mixture
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Liu Yuan

The University of
Tokyo

東京大学

大学院新領域創Bio-mass conversion over zeolite under hot compressed water Yoshito Oshima
成科学研究科The University of
Tokyo

東京大学

大学院新領域創成科学研究科Apibanboriak
Chanwit

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

源
義人

アピバンボリラク チャンウィット

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

〃

Name

〃

〃

〃

ISSP Activity Report 201829〃

Etty Nurlia
Kusumawati

東京大学

大学院理学系研
究科〃

Etty Nurlia
Kusumawati

The University of
Tokyo

30

〃

斎藤

東京大学

大学院新領域創成科学研究科〃Takahito Saito

The University of
Tokyo

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

貴仁

31

触媒反応の insitu ラマン散乱測定

佐々木

32

アルカリ土類金属元素を含む充填スクッテルダ
イトの新物質探索

関根ちひろ

室蘭工業大学

大学院工学研究 Search for new flled-skutterudite compounds including alkaline
Chihiro Sekine
earth metal
科

Muroran Institute ofTechnology

33

〃

星野

愛

室蘭工業大学

大学院工学研究
科

Megumi Hoshino

Muroran Institute ofTechnology

34

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

35

〃

田中

和彦

東京大学

大学院工学系研
究科

Kazuhiko Tanaka

The University of
Tokyo

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 of
Tokyo

田中

和彦

東京大学

大学院工学系研
究科

Kazuhiko Tanaka

The University of
Tokyo

36

87

37

溶融亜鉛メッキ合金相の応力誘起変態
〃

岳彦

〃

〃

〃

88

No.
38

ISSP Activity Report 2018

39
40

課題名

氏名

高圧下での MoSi2 型構造の FeAl2 結晶の作製

Title

Name

Organization

薫

東京大学

大学院新領域創 Synthesis of Al-Ir 1/0-Icosahedral Approximant Semiconductor
Kaoru Kimura
by high-pressurization
成科学研究科The University of
Tokyo

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

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 ofTokyo

Kazuki Tobita

The University ofTokyo

Chikako Fujimoto

The University ofTokyo

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

高圧印加による Al-Ir 1/0 近似結晶半導体の作製 木村
〃

所属

〃

41

〃

飛田

一樹

東京大学

大学院新領域創成科学研究科42

アミノ酸の高圧下における圧力誘起反応の観察

藤本

千賀子

東京大学

大学院理学系研
Pressure-induced reaction of amino acids under high pressure
究科

43

ナノ構造材料を用いた二次電池開発

細野

英司

産業技術総合研 省エネルギー研 Development of secondary battery by using nanostructured
materials
究所
究部門

44

4d および 5d 遷移金属化合物の薄膜化

平岡

奈緒香

東京大学

大学院理学系研 Developing new epitaxial thin films of 4d and 5d transition
metal compounds
究科

Naoka Hiraoka

The University of
Tokyo

〃

45

〃

根岸

真通

東京大学

大学院理学系研
究科〃

Masamichi Negishi

The University of
Tokyo

46

〃

山村

凌平

東京大学

大学院理学系研
究科〃

Ryohhei Yamamura

The University of
Tokyo

47

新しい希土類磁石の探求齋藤哲治

千葉工業大学

工学部

Tetsuji Saito

Chiba Institute ofTechnology48

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

49

〃

福山

鴻

東京大学

大学院理学系研
究科

Ko Fukuyama

The University ofTokyo

横浜国立大学

大学院工学研究 Magnetism and thermoelectric properties at high temperaturein Pr0.3Sr0.7Fe1-xMnxO3(0.1 ≦ x ≦ 0.9)
院

Hiroshi Nakatsugawa

Yokohama National
University

Research of new rare-earth magnets〃

50

Pr0.3Sr0.7Fe1-xMnxO3(0.1 ≦ x ≦ 0.9) の高温にお中津川ける磁性と熱電特性に関する研究

51

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52

逆スピネル M2XO4 (M=Mn,Co, X=Ti,Sn) の弱
磁場下における磁性の研究

太田寛人

東京農工大学

大学院工学府

53

〃

行田

祥一郎

東京農工大学

大学院工学府〃Shoichiro Gyoda

54

〃

徳永

柊介

東京農工大学

工学部〃

Shusuke Tokunaga

博

Low-field magnetic study on inverse spinel M2XO4 (M=Mn,Co,
Hiroto Ohta
X=Ti,Sn)

Kagoshima University
Tokyo Universityof Agriculture andTechnology

Tokyo Universityof Agriculture andTechnology
Tokyo Universityof Agriculture andTechnology

No.

課題名

氏名

55

スピングラス転移温度と物理パラメターとの相
関の研究

香取

浩子

56

〃

柿本

57

〃

58

所属

Title

Name

Organization

東京農工大学

大学院工学研究 Study of relationship between spin-glass transition temperature
Hiroko Katoriand physical parameter院

Tokyo Universityof Agriculture andTechnology

和勇

東京農工大学

大学院工学府〃Kazuo Kakimoto

羽鳥滋

東京農工大学

工学部〃

Shigeru Hatori

四面体を基調とした構造をもつ混合原子価化合物の磁気・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 mixed-valent compounds
Shintaro Kobayashi
consisting of tetrahedra
科

Nagoya University

59

〃

中埜

彰俊

名古屋大学

大学院工学研究科〃

Akitoshi Nakano

Nagoya University

60

〃

鬼頭

俊介

名古屋大学

大学院工学研究
科〃

Shunsuke Kitou

Nagoya University

61

高い熱電性能を示す一次元テルル化物の合成と
物性

岡本

佳比古

名古屋大学

大学院工学研究 Synthesis and Physical Properties of One-Dimensional
Tellurides with High Thermoelectric Performance
科

Yoshihiko Okamoto

Nagoya University

62

ホイスラー型化合物の磁性と伝導の研究

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

Ryota Kato

Kagoshima University

Tokyo Universityof Agriculture andTechnology
Tokyo Universityof Agriculture andTechnology

ISSP Activity Report 2018

63

〃

加藤

遼太

鹿児島大学

理学部

64

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 ofTokyo

Preparation of metal and semimetal thin films

Tohru Suemoto

Toyota Physical andChemical ResearchInstitute

Osamu Takeda

Tohoku University

〃

〃

89

66

金属および半金属薄膜の作成

末元

徹

豊田理化学研究所

67

酸化物系融体密度・表面張力測定の超高温極限
への挑戦

竹田

修

東北大学

大学院工学研究 Measurement of density and surface tension of molten oxides
at ultra-high temperature
科

68

希土類オルソフェライト単結晶成長と超高速テラヘルツ磁気分光

中嶋

誠

大阪大学

レーザー科学研 Ultrafast terahertz spin spectroscopy for rare-earth orthoferrite
Makoto Nakajima
single crystal
究所

Osaka University

69

〃

加藤

康作

大阪大学

レーザー科学研究所〃

Kosaku Kato

Osaka University

70

〃

邱

大阪大学

レーザー科学研
究所〃

Hongsong Qiu

Osaka University

71

〃

木本

大阪大学

レーザー科学研究所〃

Shodai Kimoto

Osaka University

紅松
翔大

90

No.

課題名

72

〃

ISSP Activity Report 201873

新規超伝導物質合成と物性評価

氏名

所属

Title

Name

Organization〃

Seiichiro Ueda

Osaka University

上田

誠一郎

大阪大学

レーザー科学研
究所

芝内

孝禎

東京大学

大学院新領域創 Synthesis and characterization of novel superconducting
materials
成科学研究科Takasada Shibauchi

The University of
Tokyo

74

〃

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

75

〃

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

76

〃

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

77

〃

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

78

〃

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

79

〃

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

有馬

孝尚

東京大学

大学院新領域創
Exploration of new noncentrosymmetric magnets
成科学研究科Takahisa Arima

The University of
Tokyo

80

空間反転対称性を持たない新規磁性体の開発

81

〃

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

82

〃

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

83

〃

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

84

〃

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

85

〃

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

86

〃

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

87

〃

蘇

東京大学

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

東京大学

大学院新領域創 Synthesis and characterization of novel superconducting
materials
成科学研究科

Masaya Tsujii

The University of
Tokyo

88

新規超伝導物質合成と物性評価

辻井

丹
優哉

No.

課題名

氏名

89

コニカルらせん磁性体における複合ドメイン相
関の解明

90

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

木村

所属

Title

Name

Organization

剛

東京大学

大学院新領域創 Understanding of coupled multiferroic domains in conicalspiral magnets
成科学研究科Tsuyoshi Kimura

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 Cu ‐ Ni base alloys single Crystal
院

Mahoto Takeda

Yokohama National
University

91

〃

又井

慎太郎

横浜国立大学

大学院工学府〃Sintaro Matai

Yokohama National
University

92

希釈強磁性元素を添加した銅合金の析出組織と磁気特性の調査

坂倉響

横浜国立大学

大学院工学府

Microstructural evolution and magnetic properties of nanoscale particles comprising ferromagnetic element atoms in Cu
alloysHibiki Sakakura

Yokohama National
University

93

ナノ構造材料を用いた二次電池開発

太田道広

産業技術総合研 省エネルギー研 Development of secondary battery by using nanostructured
materials
究所
究部門

Michihiro Ohta

National Institute ofAdvanced Industrial
Science and Technology

PriyankaJood

産業技術総合研 省エネルギー研
究所
究部門

Priyanka Jood

National Institute ofAdvanced Industrial
Science and Technology

鷲見

浩樹

東京大学

大学院新領域創
Exploration of new noncentrosymmetric magnets
成科学研究科

Hiroki Sumi

The University of
Tokyo

94
95

〃
空間反転対称性を持たない新規磁性体の開発〃

ISSP Activity Report 2018

96

〃

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

97

〃

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

98

〃

尾亦

恭輔

東京大学

大学院新領域創成科学研究科〃Kyosuke Omata

The University of
Tokyo

99

〃

西

東京大学

大学院新領域創成科学研究科〃

Nishi Kenta

The University of
Tokyo

100

〃

山本

圭祐

東京大学

大学院新領域創成科学研究科〃

Keisuke Yamamoto

The University of
Tokyo

101

〃

渡辺

義人

東京大学

大学院新領域創成科学研究科〃Yoshito Watanabe

The University of
Tokyo

健太

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

91

No.

課題名

氏名

所属

1

六方晶型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 hexagonal vanadium Oxyhydride
科

Takafumi Yamamoto Kyoto University

2

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

Title

Name

Organization

Kyushu InstituteTechnology

92

No.

課題名

3

〃

氏名

所属

Title

ISSP Activity Report 2018

野村

拡功

九州工業大学工学府

4

新規低次元量子磁性体 K(NbO)Cu4(PO4)4 の低温
木村
結晶構造の研究健太

東京大学

大学院新領域創 Study of the low-temperature crystal structure of a new lowdimensional quantum magnet K(NbO)Cu4(PO4)4
成科学研究科

5

マイクロミキサを用いた機能性無機ナノ粒子の
連続合成

陶

6

X 線用回折格子の開発

三村

秀和

東京大学

大学院工学系研
Development of X-ray grating
究科〃

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

究

Name

Organization

Hironori Nomura

Kyushu InstituteTechnology

Kenta Kimura

The University ofTokyo

Kiwamu Sue

National Institute ofAdvanced Industrial
Science and Technology

Hidekazu Mimura

The University ofTokyo

Yu Kamata

The University ofTokyo

Ko Fukuyama

The University of
Tokyo

7

〃

鎌田

悠

東京大学

大学院工学系研
究科

8

高温高圧下における下部マントル鉱物への窒素
の取り込み

福山

鴻

東京大学

大学院理学系研 Nitrogen incorporation into the lower-mantle minerals underhigh pressure and high temperature
究科

9

高温高圧水中におけるゼオライトの構造安定性と触媒活性についての検討

布浦

鉄兵

東京大学

環境安全研究セ Evaluation of structural and catalytic stability of zeolite in highTeppei Nunoura
temperature and high pressure water
ンター

The University of
Tokyo

10

〃

小川

拓哉

東京大学

大学院新領域創成科学研究科Takuya Ogawa

The University of
Tokyo

11

廃油の超臨界水ガス化工程におけるニッケル触媒の不活性化メカニズムの解明

布浦

鉄兵

東京大学

環境安全研究セ Nickel catalyst deactivation in supercritical water gasificationof waste oil
ンター

Teppei Nunoura

The University of
Tokyo

12

〃

東京大学

大学院新領域創成科学研究科

Diane Gudatanga

The University of
Tokyo

13

プラズマ風洞による宇宙往還機熱防護システムの動的酸化に関する研究

桃沢愛

東京都市大学

工学部

Ai Momosawa

Tokyo City University

14

〃

田中

聖也

東京大学

大学院工学系研
究科〃

Seiya Tanaka

The University of
Tokyo

15

〃

山田

慎

東京大学

大学院工学系研
究科〃

Shin Yamada

The University of
Tokyo

16

中温作動プロトン伝導型メタルサポート固体酸
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
Junichiro Otomo
metal supported SOFC
成科学研究科The University of
Tokyo

17

〃

阪田

一真

東京大学

大学院新領域創成科学研究科〃

Kazuma Sakata

The University of
Tokyo

18

〃

大友

順一郎

東京大学

大学院新領域創成科学研究科〃

Junichiro Otomo

The University of
Tokyo

19

〃

松尾

拓紀

東京大学

大学院新領域創成科学研究科〃

Hiroki Matsuo

The University of
Tokyo

ダイアン
バタンガ

グ

〃

〃

〃
Investigation on dynamic oxidation of thermal protection
system (TPS) using plasma wind tunnel

No.

課題名

氏名

所属

Title

Name

Organization

氏名

所属

Title

Name

Organization

Kohei Oyama

Kyushu University

Mari Watanabe

Tokyo University of
Science

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

課題名

1

YbPd の極低温・高圧下における異常な価数揺動
大山 耕平
相の研究

九州大学

大学院理学府2

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

東京理科大学

大学院理学研究 Ultrafast dynamics in 2H-NbSe2 by time-resolved
photoemission spectroscopy
科

渡邉

真莉

Study on anomalous valence flustuation of YbPd underhighpressure at extremely low temperatures

ISSP Activity Report 2018

93

94

平成 30 年度 共同利用課題一覧（後期）/ Joint Research List (2018 Latter Term)

ISSP Activity Report 2018

嘱託研究員 / Commission Researcher
No.

課題名

担当所員：長谷川

氏名

所属

Title

Organization

幸雄

1

極低温走査トンネル顕微鏡を用いた鉄カルコゲ
ナイド超伝導体 FeSeTe の研究吉田

2

走査トンネル顕微鏡による局所強磁性共鳴法の
開発

安

東秀

北陸先端科学技 先端科学技術研 Development of local ferromagnetic resonance in scanningtunneling microscopy
術大学院大学究科

3

スピン編極探針の作製・処理法の開発

岡

博文

東北大学

4

走査トンネル顕微鏡による低次元トポロジカル
物質の研究

岡田

佳憲

沖縄科学技術大 量子物質科学ユ Investigation of low-dimensional topological materials by
scanning tunneling
学院大学
ニット

担当所員：川島

Name

靖雄

金沢大学

理工学域

Low-temperature STM study on iron-chalcogenide
superconductor FeSeTe

材料科学高等研 Development of fandrication and treatment methods for spinpolarized tips
究所

Yasuo Yoshida

Kanazawa University

Toshu AnnJapan Advanced
Institute of Science andTechnology

Hirofumi Oka

Advanced Institute forMaterials Research

Yoshinori Okada

Okinawa Institute of
Science and Technology
Graduate University

直輝

5

第一原理有効模型導出プログラム RESPACK と模型解析プログラム H φ /mVMC の融合による非経験的強相関電子構造解析ソフトウェアの整備中村和麿

九州工業大学

Development of first principles electronic-structure calculation
大学院工学研究
software by combining effctive -model derivation code
Kazuma Nakamura
院（RESPACK) and model-analysis codes (H φ /mVMC）

Kyushu Institute ofTechnology

6

スーパーコンピュータの調達に関する意見交換

笠松

秀輔

山形大学

学術研究院

Shusuke Kasamatsu

Yamagata University

担当所員：上床Procurement of Supercomputer Systems

美也

7

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 University8

希土類 122 化合物における圧力効果

繁岡

透

山口大学

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

Toru Shigeoka

Yamaguchi University

9

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
Ryukyus10

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

11

カンチレバーを用いたトルク測定法の開発

鳥塚潔

日本工業大学

共通教育群

Development of torque measurement method

Kiyoshi Torizuka

Nippon Institute ofTechnology

12

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

Development of multi-anvil apparatus for low temperature

No.

課題名

氏名

所属

Title

Name

Organization

Gendo Oomi

Kurume Institute ofTechnology

13磁性体の圧力効果

巨海

玄道

久留米工業大学 工学部

14

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 Effect of pressure on the 3d transition compounds

Takeshi Kanomata

Tohoku Gakuin
University

15

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

16

ターンバックル式小型 DAC を利用した多重環境
狩野
下電気抵抗測定みか

日本工業大学

共通教育群

Electrical resistivity measurements under multi-extreme
conditions by using a micro-turnbuckle DAC

Mika Kano

Nippon Institute ofTechnology

17

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

18

酸化物試料の作製と高圧下物性測定

川中浩史

産業技術総合研 電子光技術研究
Sample preparation and high pressure experiments
究所部門

Hirofumi Kawanaka

National Institute ofAdvanced Industrial
Science and Technology

19

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

Effect of pressure on the Magnetic Materials

担当：中性子科学研究施設

ISSP Activity Report 201820

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

21

〃

奥山

大輔

東北大学

多元物質科学研究所〃

Daisuke Okuyama

Tohoku University

22

〃

那波

和宏

東北大学

多元物質科学研究所〃

Kazuhiro Nawa

Tohoku University

23

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

24

〃

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

〃

95

25

T1-1、T1-3 における共同利用推進

大山

研司

茨城大学

大学院理工学研
Research and Support of General-Use at T1-1 and T1-3
究科

Kenji Ohoyama

Ibaraki University26

T1-2、T1-3 における共同利用推進

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 University27

T1-2、T1-3、6G における共同利用推進

南部

雄亮

東北大学

金属材料科学研
Research and Support of General-Use at T1-2 , T1-3 and 6G
究所

Yusuke Nambu

Tohoku University

池田

陽一

東北大学

金属材料科学研究所

Yoichi Ikeda

Tohoku University

28

〃

〃

96

No.

課題名

29

〃

ISSP Activity Report 201830
31

T2-2、T1-3 における共同利用推進
〃

氏名

所属

鈴木

謙介

東北大学

金属材料科学研
究所

木村

宏之

東北大学

坂倉

輝俊

Title
〃

Name

Organization

Kensuke Suzuki

Tohoku University

多元物質科学研
Research and Support of General-Use at T2-2 and T1-3
究所

Hiroyuki Kimura

Tohoku University

東北大学

多元物質科学研究所

Terutoshi Sakakura

Tohoku University〃32

C1-2 における共同利用推進

杉山

正明

京都大学

複合原子力科学
Research and Support of General-Use at C1-2
研究所

Masaaki Sugiyama

Kyoto University

33

C1-2、C2-3-1 における共同利用推進

井上

倫太郎

京都大学

複合原子力科学
Research and Support of General-Use at C1-2 and C2-3-1
研究所

Rintaro Inoue

Kyoto University34

C1-3-mfSANS における共同利用推進

間宮広明

物質・材料研究 量子ビームユニ
Research and Support of General-Use at C1-3-mfSANS
機構
ット

Hiroaki Mamiya

National Institute forMaterials Science〃

Michihiro Furusaka

National Institute ofAdvanced Industrial
Science and Technology

35

〃

古坂

道弘

産業技術総合研
究所

36

〃

大沼

正人

北海道大学

大学院工学研究科〃

Masato Ohnuma

Hokkaido University

37

〃

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

38

C2-3-1 における共同利用推進

守島

健

京都大学

複合原子力科学
Research and Support of General-Use at C2-3-1
研究所

Ken Morishima

Kyoto University

39

C3-1-2、C2-3-1 における共同利用推進

日野

正裕

京都大学

複合原子力科学
Research and Support of General-Use at C3-1-2 and C2-3-1
研究所

Masahiro Hino

Kyoto University40

C2-1-2 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 University

小田

達郎

京都大学

複合原子力科学研究所

Tatsuro Oda

Kyoto University

41

〃

〃

42

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 University

43

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

44

〃

広田

克也

名古屋大学

大学院理学研究
科〃

Katsuya Hirota

Nagoya University

45

〃

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

氏名

所属

46

〃

山形

豊

理化学研究所

光量子工学研究領域

47

レーザー励起光電子顕微鏡を使った抵抗変化メ
モリ材料の研究木下健太郎

東京理科大学

理学部

48

FeSe 超伝導体における BCS-BES クロスオーバ
ーの研究

紺谷

浩

名古屋大学

49

高分解能光電子分光による強相関物質の研究

横谷

尚睦

50

鉄系超伝導体のレーザー光電子分光

下志万

51

有機化合物の光電子分光

金井52

時間分解光電子分光を用いた強相関係物質の研
究

53

Title

Organization

Yutaka Yamagata

RIKEN

Kentaro Kinoshita

Tokyo University of
Science

大学院理学研究
Study of BCS-BES crossover in FeSe superconductors
科

Hiroshi Kontani

Nagoya University

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

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

RIKEN

要

東京理科大学

理工学部

Photoemission study on organic compounds

Kaname Kanai

Tokyo University of
Science

溝川

貴司

早稲田大学

理工学術院

Time-resolved photoemmission study on strongly-correlatedmaterials

Takashi Mizokawa

Waseda University

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

54

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 利用研究促進部
Development of micr- and time-resolved beamline
究センター
門

Takayuki Muro

Japan Synchrotron
Radiation Institute55

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
Science5660-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 60eV
laser
究科

Kyoko Ishizaka

The University of
Tokyo

57

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

Mario Okawa

Tokyo University of
Science58

レーザー光電子分光による参加薄膜の研究

津田俊輔

機能性材料研究
物質・材料研究
拠点量子輸送特 Laser-Photoemission Study on Oxide Films
機構
性グループ

Shunsuke Tsuda

National Institute forMaterials Science59

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

60

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
Agency61

時間分解光電子顕微分光実験の技術開発

木下豊彦

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

担当所員：辛

〃

Name

埴

貴博

隆桂之

Study on Materials for Resistive Switching Memories using
laser-PEEM

ISSP Activity Report 2018

Time resolved Photoemission on Mn compounds

97

98
ISSP Activity Report 2018

No.

課題名

62

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

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

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

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-resolved ARPES investigation of monolayer Thallium on
Si(111)
研究科

Kszuyuki Sakamoto

Chiba University

66

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

67

時間分解光電子分光や超高分解能光電子分光を用いた超伝導体や強相関系物質の研究

吉田

鉄平

京都大学

大学院人間・環 Laser ARPES study on superconductors and strongly-correlated
Teppei Yoshidamaterials
境学研究科

Kyoto University

68

固体中のマヨラナ粒子の研究

松田

祐司

京都大学

大学院理学研究 Study of Majorana Fermion in Solids by Laser Photoemission
Spectroscopy
科

Yuji Matsuda

Kyoto University

〃

佐藤

昌利

京都大学

基礎物理学研究所

Masatoshi Sato

Kyoto University

70

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

大学院工学研究 Operando nano-spectroscopy for energy effect, power
generation and energy storange devices
科

Masaharu Oshima

The University of
Tokyo

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

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 エネルギー技術
究所
研究部門

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

Hidenori Fujiwara

Osaka University

69
担当所員：原田担当所員：松田

氏名

所属

Title

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

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

Akio Kimura

Hiroshima University〃

National Institute forMaterials Science

慈久

巌

滋正

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

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

No.

課題名

氏名

所属

Title

77

スピン分解光電子分光の測定技術開発

木村

真一

大阪大学

大学院生命機能 Technical development of spin-resolved photoemission
spectroscopy measurement研究科

78

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

大学院工学研究 Dynamics of valence transition in EuNi2（Si1-xGex)2 revealedby time-resolved XAS
科担当所員：和達Technical development of time-resolved magneto-opticalexperiment

Name

Organization

Shin-ichi Kimura

Osaka University

Masato Kotsugi

Tokyo University of
Science

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

統合型材料開Observation of magnetic domain structure for ferromagnetic
物質・材料研究
発・情報基盤部
thin films by means of resonant scatterin
機構
門

National Institute forMaterials Science

山崎

Yuichi Yamasaki

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

ISSP Activity Report 2018

1

Ba2+-Fe3+-Ti4+ 酸化物磁性体の磁場中誘電特性

神島

謙二

埼玉大学

大学院理工学研 Dielectric properties of Ba2+-Fe3+-Ti4+ magnetic oxides undermagnetic field
究科

Kamishima Kenji

Saitama University

2

〃

米澤

豊志

埼玉大学

大学院理工学研
究科

Atsushi Yonezawa

Saitama University3

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

理工学部

Experimental and theoretical studies on gap symmetry
determination in superconductors

Kazushige Machida

Ritsumeikan University

4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

Interplay between unconventional superconductivity andmagnetism in heavy-fermion compounds

Makoto Yokoyama

Ibaraki University

5

〃

鈴木

康平

茨城大学

大学院理工学研
究科

Kohei Suzuki

Ibaraki University

〃

〃

99

6

Yb2Rh3Si5 の極低温磁化と比熱測定

中村翔太

名古屋工業大学 工学部

Magnetization and specific heat measurements of Yb2Rh3Si5 at
Shota Nakamuravery low temperature

Nagoya Institute ofTechnology

7

純良な単一単結晶を用いた新規超伝導体の比熱
測定

加瀬

直樹

東京理科大学

理学部

Superconducting state elucidated through specific heatmeasurements

Naoki Kase

Tokyo University of
Science8

トポロジカル超伝導のギャップ構造とネマチッ
ク相研究孫

青山学院大学

理工学部

Study of the gap structure and nematic phase of topologicalsuperconductors

Yue SunAoyama Gakuin
University

悦100
ISSP Activity Report 2018

No.

課題名

9

Rb2Cu2Mo3O12 の特異な磁気特性への不純物置
換効果

安井

幸夫

明治大学

理工学部

Impurity effects on anomalous magnetic properties of
Rb2Cu2Mo3O12

Yukio Yasui

Meiji University10

量子スピンアイス系 Yb2Ti2O7 の誘電特性

安井

幸夫

明治大学

理工学部

Dielectric Properties of Quantum Spin Ice System Yb2Ti2O7

Yukio Yasui

Meiji University

教育学部

Low temperature magnetism of triangular antiferromagnets

Yoshitomo Karaki

University of Ryukyu

Magnetic torque measurements of heavy fermion YbNi2Si3 at
ultra low temperature

Shigeo Ohara

Nagoya Institute ofTechnology

Shota Nakamura

Nagoya Institute ofTechnology

担当所員：山下

氏名

所属

Title

Name

Organization

穣

11三角格子反強磁性体の低温磁性

柄木

良友

琉球大学

12

重い電子系化合物 YbNi2Si3 の超低温磁気トルク
大原
測定

繁男

名古屋工業大学 物理工学科

13

〃

中村

翔太

名古屋工業大学 工学部

14

パイロクロア酸化物 Cd2Os2O7 の局所磁化測定

芝内

孝禎

東京大学

大学院新領域創 Local magnetization measurements on pyrochlore oxide
Cd2Os2O7
成科学研究科Takasada Shibauchi

The University of
Tokyo

15

〃

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 ofTokyo

重い電子系超伝導体 CeCoIn5 の超低温における宍戸
dHvA 効果測定

寛明

大阪府立大学

大学院工学研究 dHvA effect measurements at ultra-low temperatures in aheavy fermion superconductor CeCoIn5科

Hiroaki Shishido

Osaka Prefecture
University

諒

大阪府立大学

大学院工学研究科〃

Ryo Katayama

Osaka prefecture
university

亮輔

日本女子大学

理学部

Study of Superconducting state in semiconductor MoS2/metal
Ti interface

Ishiguro Ryosuke

Japan Women's
University

相川

夕美花

日本女子大学

大学院理学研究科〃

Aizawa Yumika

Japan Women's
University

米谷

玲皇

東京大学

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

Reo Kometani

The University of
Tokyo

16
17

〃

担当所員：勝本
18
19
20

片山

〃

〃

信吾

半導体 MoS2/ 金属 Ti 界面における超伝導状態の石黒研究〃
ナノ・マイクロセンシングデバイスの創製

21

〃

田中 航大

東京大学

大学院工学系研
究科〃

Kodai Tanaka

The University of
Tokyo

22

〃

吉原

東京大学

大学院工学系研
究科〃

Kenta Yoshihara

The University of
Tokyo

23

〃

ペンエークウォン ケーマナット

東京大学

大学院新領域創成科学研究科〃

Penekwong Khemnat

The University of
Tokyo

健太

No.

課題名

24

〃

25

二次元銅酸化物のホール係数測定 (II)

氏名

所属

西田

裕信

東京大学

大学院新領域創成科学研究科

神戸

士郎

山形大学

Title

Name

Organization

Hironobu Nishida

The University ofTokyo

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

Shiro Kambe

Yamagata University〃

Yoshihito
Shimabukuro

Yamagata University

〃

26

〃

島袋

義仁

山形大学

大学院理工学研究科

27

量子ホール効果測定のための高移動度半導体試
料作成

福田

昭

兵庫医科大学

物理学教室

Development of the high mobility semiconductor sample forthe measurements in the quantum Hall regime

Akira Fukuda

Hyogo College ofMedicine

28

〃

寺澤

大樹

兵庫医科大学

物理学教室〃

Daiju Terasawa

Hyogo College ofMedicine

空間反転対称性の破れた結晶構造に発現する非線形電流応答

木俣

基

東北大学

金属材料研究所

Nonlinear current response in non-centrosymmetric crystal
structure

Motoi Kimata

Tohoku university

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

Ikuzo Kanazawa

Tokyo Gakugei
University〃

Shun Nakamura

Tokyo Gakugei
University

Masamichi Yamada

ChuoUniversity

Yoshihide Aoyagi

Yokohama National
University

Kan Nakatsuji

Tokyo Institute ofTechnology

Kazuya Tanaka

Tokyo Institute ofTechnology

Shinya Ohno

Yokohama National
University

担当所員：大谷29

担当所員：小森義近

文夫

ISSP Activity Report 201830

Al-Pd-Ru 準結晶・近似結晶における空孔濃度の
研究

金沢

育三

東京学芸大学

自然科学系

31

〃

中村

駿

東京学芸大学

大学院教育学研究科

32

面内圧縮された Cu(001) 表面における局所構造
緩和

山田

正理

中央大学

理工学部

33

単層グラフェンの電子状態の解析

青柳良英

横浜国立大学

大学院理工学府 Analysis of electrical states of monolayer graphene34

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

物質理工学院田中和也

東京工業大学

物質理工学院

35〃

Local structural rearrangement on a compressed Cu(001)surfaceElectronic structure of In-Bi surface alloy grown on
Si(111)41-In substrates
〃

101

36

単層グラフェンの電子状態の解析

大野真也

横浜国立大学

大学院工学研究
Analysis of electronic states of monolayer graphene
院

37

金属／半導体表面上への超薄膜およびナノ構造
薄膜の形成とその磁化ダイナミックスの観測河村紀一

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

38

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

102

No.

課題名

担当所員：長谷川

氏名

所属

Title

Name

Organization

幸雄

ISSP Activity Report 201839

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 Takamura

JAIST

40

〃

米澤

隆宏

北陸先端科学技 先端科学技術研
術大学院大学
究科

Takahiro Yonezawa

JAIST

41

各種分光測定による機能性材料の物性と反応に
関する研究

塩澤

佑一朗

山梨県

産業技術センタ The physical properties and reactivities of functional materials
Yuichiro Shiozawa
studied by various spectroscopies
ーIndustrial Technology
Center Yamanashi

42

電界効果による吸着分子の状態制御の赤外分光
観測

野内

亮

大阪府立大学

大学院工学研究 Field-effect control of adsorbed molecules observed by infrared
Ryo Nouchi
spectroscopy
科

Osaka Prefecture
University

Reflectance measurement of the mirrors used in cosmic raytelescops, after an exposure to UV radiation

Koji Noda

The University ofTokyo

担当所員：吉信

担当所員：秋山

〃

淳

英文

43

宇宙線望遠鏡に用いる反射鏡の UV 照射後の反
射率測定

野田

浩司

東京大学

宇宙線研究所44

フォトルミネッセンス励起分光を用いた GaPAsN
矢口
混晶における局在状態に関する研究

裕之

埼玉大学

大学院理工学研 Photoluminescence excitation spectroscopy of localized states
in GaPAsN alloys
究科

Hiroyuki Yaguchi

Saitama University

45

〃

高宮

健吾

埼玉大学

総合技術支援センター〃

Kengo Takamiya

Saitama University

46

〃

高橋

渉

埼玉大学

大学院理工学研
究科〃

Wataru Takahashi

Saitama University

Si 基板上に直接成長させた GaN の成長条件が光
小柴
学特性に及ぼす影響俊

香川大学

大学院工学研究 Influences of growth conditions of GaN on Si substrate on
optical properties
科

Takashi Kuraoka

Kagawa University

賢

香川大学

大学院工学研究
科

Takashi Kuraoka

Kagawa University

Kentaro Kuga

RIKEN

47
48

〃

担当所員：中辻

藏岡

〃

知

49

価数相転移に伴う格子歪みの研究Ⅱ

久我健太郎

理化学研究所

放射光科学研究
Crystal strain associated with valence transition Ⅱ
センター

50

希土類金属間化合物の強磁場低温物性研究

海老原

静岡大学

学術院理学領域

Physical properties in rare earth intermetallic compounds athigh magnetic fields in low temperature

Takao Ebihara

Shizuoka University

静岡大学

創造科学技術大学院〃

Jumaeda Jatmika

Shizuoka University

51

〃

孝雄

ジュマエダ
ジャトミカ

No.

課題名

担当所員：廣井

氏名

所属

Title

Name

Organization

善二
山田

高広

東北大学

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

Takahiro Yamada

Tohoku University

53

蜂の巣格子 Kitaev- Γ模型の基底状態相図と磁気
鈴木
励起

隆史

兵庫県立大学

大学院工学研究 Ground-state phase diagram and magnetic excitation of theKitaev- Γ model on a honeycomb lattice
科

Takafumi Suzuki

University of Hyogo54

非平衡系のためのテンソルネットワーク法

原田

健自

京都大学

大学院情報学研
Tensor network schemes for non-equilibrium systems
究科

Kenji Harada

Kyoto University

キュービックアンビルセルを用いた NMR 測定開
藤原
発

直樹

京都大学

大学院人間・環 Development of NMR measurements under pressure using a
cubic-anvil cell
境学研究科

Naoki Fujiwara

Kyoto University

Takanori Kuwayama Kyoto University52

層状構造を有する金属間化合物のディインター
カレーションと低温物性担当所員：川島担当所員：上床55

直輝

美也

ISSP Activity Report 2018

56

〃

桑山

昴典

京都大学

大学院人間・環境学研究科

57

BiFe1-xCoxO3 における高圧下での弱強磁性相の
安定性

山本

孟

東北大学

多元物質科学研 High pressure study of the weak ferromagnetism in
BeFe1-xCOxO3
究所

Hajime Yamamoto

Tohoku University

58

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
Science59

多形化合物 RIr2Si2(R= 希土類）の結晶育成と物
質評価 5

繁岡

透

山口大学

大学院創成科学 Crystal growth and characterization of polymorphic
compounds RIr2Si2 (R=rera earth) 5
研究科

Toru Shigeoka

Yamaguchi University

60

〃

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

透

山口大学

Toru Shigeoka

Yamaguchi University

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

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

大学院創成科学研究科

Toru Shigeoka

Yamaguchi University

松本

圭介

愛媛大学

大学院理工学研
Magnetic properties of rare-earth-based compounds R5CuSn3
究科

Keisuke Matsumoto

Ehime University

61
62
63
64

103

65

擬三元化合物 Ce1-xMxNiC2(M = Y, La, Lu) の結繁岡
晶育成と物質評価〃
多形化合物 RIr2Si2(R= 希土類）磁気特性 3〃
新規希土類化合物 R5CuSn3 の磁気特性〃〃

大学院創成科学 Crystal growth and characterization of pseudo-ternarycompounds Ce1-xMxNiC2(M = Y, La, Lu)
研究科〃
Magnetic characteristics of polymorphic compounds
RIr2Si2(R=rare earth) 3
〃

104

No.

課題名

66

〃

ISSP Activity Report 2018

67
68
69
70
71
72
73
74
75
76

希土類化合物 R5CuSn3 の磁気熱量効果〃
HoRh2Si2 の Co 置換系化合物の単結晶育成〃
単結晶 Ho1-xLaxRh2Si2 の磁気特性〃
EuMn2Ge2 単結晶の比熱測定〃
単結晶 Ho1-xLaxRh2Si2 の電気抵抗測定
〃

氏名

所属

Title

Name

Organization〃

Ken Ishihara

Ehime University

石原

憲

愛媛大学

大学院理工学研
究科

松本

圭介

愛媛大学

大学院理工学研
Magnetocaloric effect in rare-earth-based compounds R5CuSn3 Keisuke Matsumoto
究科

Ehime University

石原

憲

愛媛大学

大学院理工学研
究科

Ken Ishihara

Ehime University

藤原

哲也

山口大学

大学院創成科学 Single crystal growth of Co substituted HoRh2-xCoxSi2
compounds
研究科

Tetsuya Fujiwara

Yamaguchi University

山本

嵩

山口大学

大学院創成科学研究科

Shu Yamamoto

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Magnetic properties of Ho1-xLaxRh2Si2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

山本

嵩

山口大学

大学院創成科学研究科

Shu Yamamoto

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Specific heat measurement of EuMn2Ge2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

山本

嵩

山口大学

大学院創成科学研究科

Shu Yamamoto

Yamaguchi University

藤原

哲也

山口大学

大学院創成科学
Resistivity measurements of Ho1-xLaxRh2Si2 single crystal
研究科

Tetsuya Fujiwara

Yamaguchi University

山本

嵩

山口大学

大学院創成科学研究科

Shu Yamamoto

Yamaguchi University

Kouhei Matsuura

The University of
Tokyo

〃

〃

〃

〃

〃

77

FeSe1-xSx の高置換組成における高圧下物性研究 松浦

康平

東京大学

大学院新領域創The high pressure study on highly substituted FeSe1-xSx
成科学研究科78

有機反強磁性絶縁体λ -(BEDT-TTF)2GaCl4 の超高静水圧印加によるモット相境界の決定と圧力 谷口
誘起超伝導の探索

弘三

埼玉大学

大学院理工学研
the Mott phase boundary by applying quasi-hydrostatic ultra-high
究科

Hiromi Taniguchi

Saitama University

Search for pressure-induced superconductivity and determination ofpressures to organic antiferromagnetic insulator, λ -(BEDT-TTF)2GaCl4

79

〃

小林

拓矢

埼玉大学

大学院理工学研
究科〃

Takuya Kobayashi

Saitama University

80

〃

綱川

仁志

埼玉大学

大学院理工学研
究科〃

Hitoshi Tsunakawa

Saitama University

81

〃

生沼

浩介

埼玉大学

大学院理工学研
究科〃

Kohsuke Oinuma

Saitama University

82

〃

小澤

宏彬

埼玉大学

大学院理工学研
究科〃

Hiroaki Ozawa

Saitama University

No.

課題名

83

鉄セレン系化合物の単結晶育成とその圧力効果

久田

旭彦

徳島大学

大学院社会産業 Single-crystal growth and pressure-effect study of iron-selenide
Akihiko Hisada
compound
理工学研究部

84

Yb(Co1-xIrx)2Zn20 の 基本物性評価 III

阿曽

尚文

琉球大学

理学部

佐藤

信

琉球大学

大学院理工学研
究科

阿曽

尚文

琉球大学

理学部

津堅

涼

琉球大学

大学院理工学研
究科

阿曽

尚文

琉球大学

理学部

盛島

実竜

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

85
86
87
88
89
90

〃
YbCo2Zn20 置換系試料の圧力効果 III〃
Ce 系圧力誘起超伝導体の圧力中同時測定
〃

氏名

所属

ISSP Activity Report 2018

91

〃

西川

智生

金沢大学

大学院自然科学研究科

92

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

93

〃

稲森

庸介

金沢大学

大学院自然科学研究科

Title

Evaluation of fundamental physical properties in
Yb(Co1-xIrx)2Zn20 III〃
Pressure effect of doped YbCo2Zn20 systems III〃
Simultaneous measurements under pressure in Ce-basedpressure-induced superconductors〃
Anisotropic magnetovolume effect of rare earth Lavescompound RAl2〃
Pressure and field induced quantum phase transition instrongly correlated electron systems〃

Name

Organization
Tokushima University

Naofumi Aso

University of the
Ryukyus

Shin Sato

University of the
Ryukyus

Naofumi Aso

University of the
Ryukyus

Ryo Tsuken

University of the
Ryukyus

Naofumi Aso

University of the
Ryukyus

Miiru Morishima

University of the
Ryukyus

Masashi Ohashi

Kanazawa University

Tomoki Nishikawa

Kanazawa University

Masashi Ohashi

Kanazawa University

Yosuke Inamori

Knazawa University

94

1 GPa 付近の圧力媒体の異常特性の解明

村田惠三

大阪経済法科大 ２１世紀社会総
Anomalous Properties of Pressure Medium around 1 GPa
学
合研究センター

Keizo Murata

Osaka University of
Economics and Law95

層状硫化ビスマス超伝導体 La(O,F)BiSSe の高圧
加瀬
力下物性

直樹

東京理科大学

理学部

Naoki Kase

Tokyo University of
Science96

Cr 基三元系遍歴強磁性体の高圧磁気特性

三井

好古

鹿児島大学

大学院理工学研 Magnetic properties of Cr-based ternary itinerant ferromagnet
under high pressure
究科

Yoshifuru Mitsui

Kagoshima University

増満

勇人

鹿児島大学

大学院理工学研
究科

Hayato Masumitsu

Kagoshima University

伊藤

昌和

鹿児島大学

総合科学域総合
Magnetization of MnNiGe1-xSix system under high pressure
教育学系

Masakazu Ito

Kagoshima University

白濱

透

鹿児島大学

大学院理工学研
究科

Toru Shirahama

Kagoshima University

97
98

105

99

〃
MnNiGe1-xSix 系化合物の高圧化磁化測定〃

Pressure effect of the BiS2-based superconductors

〃

〃

106

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018100

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

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

101

MnCoGe の磁気特性及び相変態と、熱処理温度
の関係

三井

好古

鹿児島大学

大学院理工学研 Relationship between annealing temperature, magnetic andstructural properties of MnCoGe
究科

Yoshifuru Mitsui

Kagoshima University

102

〃

野口

滉平

鹿児島大学

大学院理工学研
究科

Kohei Noguchi

Kagosima University

103

Pd 系ホイスラー合金の磁気モーメントの高圧効
果

安達

義也

山形大学

大学院理工学研 Pressure effect of the magnetic moments for the Pd-Heusler
alloys
究科

Yoshiya Adachi

Yamagata University

104

〃

福本

拓実

山形大学

大学院理工学研
究科

Takumi Fukumoto

Yamagata University

105 高圧力下における Fe 基磁性体の磁気特性

小山

佳一

鹿児島大学

大学院理工学研
Magnetic properties of Fe-based magnets under high pressures Keiichi Koyama
究科

Kagoshima University

106

尾上

昌平

鹿児島大学

大学院理工学研
究科

Masahira Onoue

Kagoshima University

107 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

108

〃

本多

史憲

東北大学

金属材料研究所

Fuminori Honda

Tohoku University109

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

110

〃

垣花

将司

琉球大学

大学院理工学研
究科〃

Masashi Kakihana

University of the
Ryukyus

111

〃

太田

譲二

琉球大学

大学院理工学研
究科〃

Jouji Ota

University of the
Ryukyus112 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

113

伊覇

航

琉球大学

大学院理工学研究科

114 Eu 化合物の圧力誘起近藤状態の探索

辺土

正人

琉球大学

理学部

115

松田

進弥

琉球大学

大学院理工学研
究科

仲間

隆男

琉球大学

理学部

〃

〃

〃

116 遷移金属化合物の高圧力下の輸送特性〃〃〃
Investigation of valence transition on Eu compounds underhigh pressure〃

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

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

Wataru Iha

Searching for pressure-induced Kondo state on Eu compounds Masato Hedo〃
Pressure effect on transport properties of transition metalcompounds

University of the
Ryukyus

University of the
Ryukyus
University of the
Ryukyus
University of the
Ryukyus

Shinya Matsuda

University of the
Ryukyus

Takao Nakama

University of the
Ryukyus

No.

課題名

117

〃

川勝

祥矢

琉球大学

大学院理工学研
究科

118

トポロジカル絶縁体およびその関連物質の探索と高圧下輸送特性

辺土

正人

琉球大学

理学部

119

〃

仲井間

琉球大学

大学院理工学研
究科

史憲

東北大学

岳

坪内

123 Ce5Ge3 の圧力下電気抵抗測定

広瀬

124

小板橋

120 ウラン化合物の磁性の圧力効果
121

氏名

本多

ジグザグ鎖構造をもつ新しい Ce3TiBi5 の圧力下
本山
比熱測定

122

〃

〃

担当所員：尾崎

所属

Title

Name

〃

Syouya Kawakatsu

University of the
Ryukyus

Masato Hedo

University of the
RyukyusKenri Nakaima

University of the
Ryukyus

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

Fuminori Honda

Tohoku University

島根大学

大学院自然科学 Specific heat measurements of a new Ce compound with zigzag chain structure
研究科

Gaku Motoyama

Shimane University

将紘

島根大学

大学院自然科学研究科

Masahiro Tsubouchi Shimane University

雄介

新潟大学

理学部物理学科 Electrical resistivity under pressure of Ce5Ge3

Yusuke Hirose

Niigata University

新潟大学

大学院自然科学研究科

Takuto Koitabashi

Nigata University

憲李

拓斗

Searching of topological semiconductors and transport
properties under high pressure〃〃〃

Organization

泰助

ISSP Activity Report 2018107

アントワーヌフロランス

Analysis and control of crystal and electronic structures of 2D
北陸先端科学技 マテリアルサイ
materials through concerted collaboration of experiment andAntoine Fleurence
術大学院大学
エンス系
theory

JAIST

新田 寛和

北陸先端科学技 先端科学技術研
術大学院大学
究科

Hirokazu Nitta

JAIST

127 単結晶 CeRh2Si2 の結晶評価

齋藤

開高エネルギー
物質構造科学研
Evaluation on the crystallinity of single crystalline CeRh2Si2加速器研究機構 究所

Hiraku Saito

High Energy
Accelerator Research
Organization

128 重い電子系超伝導体における量子臨界揺らぎ

横山

淳

茨城大学

理学部

Makoto Yokoyama

Ibaraki University

129

鈴木

康平

茨城大学

大学院理工学研
究科

Kohei Suzuki

Ibaraki University

130 Yb(Co1-xNix)2Zn20 の極低温比熱測定

阿曽

尚文

琉球大学

理学部

Naofumi Aso

University of the
Ryukyus

131

瑞慶覧

琉球大学

大学院理工学研
究科

Chousei Zukeran

University of the
Ryukyus125

実験と計算の協奏による二次元材料の構造・電子状態解析及び制御

126〃

担当所員：益田

〃

隆嗣

〃

〃

長星

Quantum critical fluctuations in heavy fermion
superconductors〃
Specific heat measurement at very low temperature on
Yb(Co1-xNix)2Zn20
〃

108

No.

課題名

氏名

ISSP Activity Report 2018

132 (Yb1-xLux)Co2Zn20 の極低温比熱測定 II

阿曽

133

諸見里

〃

尚文
真嗣

所属
琉球大学

理学部

琉球大学

大学院理工学研
究科

Title

Name

Organization

Naofumi Aso

University of the
Ryukyus〃

Masatsugu
Moromizato

University of the
RyukyusSpecific heat measurement at very low temperature on(Yb1-xLux)Co2Zn20 II

134(Ce1-xRx)5Si3(R=Y, Li, La, Lu) 単結晶試料の高エ小林
ネルギー X 線ラウエ装置による結晶方位同定

理気

琉球大学

理学部

Alignment of (Ce1-xRx)5Si3(R=Y, Li, La, and Lu) single crystals
by high-energy X-ray Laue diffraction

Riki Kobayashi

University of the
Ryukyus135(Ce1-xRx)5Si3(R=Y, Li, La, Lu) 単結晶試料の極低
小林
温比熱測定

理気

琉球大学

理学部

Specific heat measurement at very low temperature on(Ce1-xRx)5Si3(R=Y, Li, La, and Lu) systems

Riki Kobayashi

University of the
Ryukyus

晴彦

上智大学

理工学部

Ultra-high magnetic eld magneto-optical approach to the studyof magnetization plateau in Cu3Mo2O9 using vertical singleHaruhiko Kuroe
turn coil system IV

Sophia University

担当所員：嶽山136

正二郎

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

担当所員：金道浩一

137 金属ナノ結晶集合体の磁化特性

稲田

貢

関西大学

システム理工学
Magnetic properties of metal nanocrystal assemblies
部

Mitsuru Inada

Kansai University

138

〃

米澤

諒

関西大学

大学院理工学研
究科

Ryo Yonezawa

Kansai University

139

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

Hikomitsu Kikuchi

University of Fukui

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

Naoki Kase

Tokyo University of
Science
Kyoto University

140 サブメガガウス領域での希土類物性研究

海老原

141

〃

村串

拓真

静岡大学

大学院総合科学技術研究科

142

異常に大きな BiS2 系超伝導体の上部臨界磁場の
決定

加瀬

直樹

東京理科大学

理学部

143

Yb4TGe8(T: 遷移金属 ) と新規希土類化合物の強道岡
磁場磁化測定千城

京都大学

大学院理学研究 High-field magnetization measurements of Yb4TGe8(T: transition metal) and novel rare-earth metal compounds
科

Chishiro Michioka

山中

俊介

京都大学

大学院理学研究
科

Shunsuke Yamanaka Kyoto University

145 MnNiGe(1-x)Si(x) 系化合物の高磁場磁化測定

伊藤

昌和

鹿児島大学

総合科学域総合
High magnetic field Magnetization of MnNiGe(1-x)Si(x) system Masakazu Ito
教育学系

Kagoshima University

146

白濱

透

鹿児島大学

大学院理工学研
究科

Kagoshima University

144

〃

〃

孝雄

〃

〃
Upper critical field of the BiS2-based superconductors〃〃

Toru Shirahama

No.

課題名

147

topological Kondo insulator SmB6,YbB12 の磁化特性と比熱

伊賀

文俊

茨城大学

理学部

148

〃

松浦

航

茨城大学

大学院理工学研
究科

文俊

茨城大学

理学部

149

氏名

高圧合成希土類 6,12 ホウ化物の強磁場中の磁化
伊賀
と比熱

所属

Title
Magnetic and thermal properties of topological Kondo
insulator SmB6 and YbB12〃

Name

Organization

Fumitoshi Iga

Ibaraki University

Wataru Matsuura

Ibaraki University

Magnetic and thermal properties in high magnetic fields of rareearth hexa- and dodeca-borides produced by high pressure
Fumitoshi Iga
synthesis

Ibaraki University

150

〃

中山

裕之

茨城大学

大学院理工学研
究科

151

Bi 系銅酸化物高温超伝導体の磁気抵抗を用いた
超伝導揺らぎの研究

渡辺

孝夫

弘前大学

大学院理工学研 A study of the superconducting fluctuation using
Takao Watanabemagnetotransport measurements for Bi-based high-Tc cuprates
究科

Hirosaki University

152

〃

川村

圭輔

弘前大学

大学院理工学研
究科〃

Keisuke Kawamura

Hirosaki University

153

〃

山口

隼平

弘前大学

大学院理工学研
究科〃

Shunpei Yamaguchi

Hirosaki154

強磁場下量子振動測定による Te の金属的表面状
秋葉
態の解明

和人

岡山大学

Investigation of the metallic surface state on Te by quantum
大学院
自然科学研究科 oscillation meansurements in pulsed magnetic fields

Kazuto Akiba

Okayama University

155

トーラス型フェルミ面を持つラシュバ型半導体の量子極限伝導特性の研究

寛

大阪大学

大学院
理学研究科

156

多層ディラック電子系 EuMnBi2 のランダウ準位
近藤
構造におけるスピン軌道相互作用の影響

雅起

大阪大学

大学院理学研究 Impact of spin-orbit interaction on the Landau levels near thequantum limit for a layered Dirac material EuMnBi2
科

青木

大

東北大学

金属材料研究所

ペロブスカイト酸化物 SrTiO3 と鉄酸化物界面に158 形成された伝導層における強磁場下での磁気抵 大矢
抗効果

忍

東京大学

担当所員：徳永〃

Hiroyuki Nakayama

Ibaraki University

University

将史

ISSP Activity Report 2018157 新奇重い電子系超伝導 UTe2 のメタ磁性の探索

村川皛

High field study for quantum limit transport properties of tours
Hiroshi Murakawa
Fermi surface in Rashba semiconductor

Osaka university

Masaki Kondo

Osaka university

Dai Aoki

Tohoku University

大学院工学系研 Magnetoresistance of the transport layer between perovskite
oxide SrTiO3 and iron oxide under a strong magnetic field
究科

Shinobu Ohya

The University of
Tokyo

東北大学

大学院工学研究 The magnetization measurement under strong magnetic fieldin PdMnGa alloy
科

Xiao Xu

Tohoku University

Tatsuya Ito

Tohoku University

Hodaka Kurokawa

The University ofTokyo

Search for metamagnetism in novel heavy fermion
superconductor UTe2

109

159 強磁場下における PdMnGa 合金の磁化測定

許

160

〃

伊東

達矢

東北大学

大学院工学研究科

161

磁気光学顕微鏡による超伝導体中の量子渦の実空間非平衡ダイナミクス観測手法の確立

黒川

穂高

東京大学

大学院総合文化 Observing the real-space nonequilibrium dynamics of vortices
in superconductor with a magneto-optical microscope
研究科

162

磁性半金属 EuP3 における角度回転プローブを用高橋
いた超強磁場磁気輸送

英史

東京大学

大学院工学系研 Angle-dependent magnetotransport properties on the magnetic
Hidefumi Takahashi
semimetal EuP3
究科〃

The University of
Tokyo

110
ISSP Activity Report 2018

No.

課題名

氏名

163

〃

メイヨーアレックス 浩

東京大学

大学院工学系研
究科

Alex Hiro Mayo

The University of
Tokyo

164

Ni-Mn 基ホイスラー合金におけるマルチカロリ
ック効果の検証

木原東北大学

金属材料研究所 Validation of multicaloric effects in Ni-Mn based Heusler alloys Takumi Kihara

Tohoku University

静岡大学

学術院理学領域工

165 重い電子系における強磁場中の電子状態研究

海老原

166

鈴木

文登

静岡大学

大学院総合科学技術研究科

多層ディラック電子系 EuMnBi2 のランダウ準位
酒井
構造におけるスピン軌道相互作用の影響

英明

大阪大学

167

〃

孝雄

所属

Title
〃

Electronic states at high magnetic fields in Heavy Fermion
systems

Name

Organization

Takao Ebihara

Shizuoka University

Fumito Suzuki

Shizuoka University

大学院理学研究 Impact of spin-orbit interaction on the Landau levels near thequantum limit for a layered Dirac material EuMnBi2
科

Hideaki Sakai

Osaka University

〃

168

〃

西村

拓也

大阪大学

大学院理学研究
科〃

Takuya Nishimura

Osaka University

169

〃

藤村

飛雄吾

大阪大学

大学院理学研究科〃

Hyugo Fujimura

Osaka University

170

〃

中川

賢人

大阪大学

大学院理学研究科〃

Kento Nakagawa

Osaka University

171

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

東京大学

大学院新領域創 High-field magnetoelectric properties of square-cupola-based
antiferromagnets
成科学研究科

Kenta Kimura

The University ofTokyo

近藤半導体 (Yb,R)B12、新規高圧合成物質のワン
伊賀
ターンコイル 120T 強磁場磁化と伝導

文俊

茨城大学

理学部

Magnetization and transport properties by using one-turn coilin a 120 T pulse magnet of Kondo insulator (Yb,R)B12 andnovel rare-earth borides producted by high-pressure synthesis

Fumitoshi Iga

Ibaraki University〃

Takahiro Yamada

Ibaraki University

担当所員：松田
172

康弘

173

〃

山田

貴大

茨城大学

理学部

174

トポロジカル絶縁体を用いたスピン軌道トルク
磁気メモリの表面状態解明

武田

崇仁

東京大学

大学院工学系研 Unveiling the surface state of spin-orbital torque magnetic
memory using topological insulator
究科

Takahito Takeda

The University of
Tokyo

175

第二種 Weyl 半金属 WTe2 の角度分解光電子分光
万
による研究

東京大学

大学院理学系研 Angle-resolved photoemission spectroscopy study of type-II
Weyl semimetal WTe2
究科

Wan Yuxuan

The University of
Tokyo

176

半導体基板上のスピン分裂擬一次元表面状態におけるフェルミ準位調整

大坪

嘉之

大阪大学

大学院生命機能 Fermi-level tuning of quasi-1D spin-split surface states on
semiconductor substrates
研究科

Yoshiyuki Ohtsubo

Osaka University

177

〃

中村

拓人

大阪大学

大学院理学研究
科

Takuto Nakamura

Osaka university

担当所員：辛

埴

宇軒

〃

No.

課題名

178

〃

179 電子ホール結合系物質の時間分解光電子分光

氏名

所属

徳舛

直樹

大阪大学

大学院理学研究
科

溝川

貴司

早稲田大学

理工学術院

Title

Name

Organization〃

Naoki Tokumasu

Osaka university

Time-resolved photoemission study of electron-hole coupledmaterials

Takashi Mizokawa

Waseda University

ISSP Activity Report 2018

111

180

層状 MAX 相化合物 V2AlC のスピン分解角度分
解光電子分光

伊藤

孝寛

名古屋大学

シンクロトロン Spin- and angle-resolved photoemission study of layered MAX
Takahiro Ito
光研究センター phase compound V2AlC

Nagoya University

181

〃

鍋平

直輝

名古屋大学

大学院工学研究
科

Naoki Nabehira

Nagoya University

182

トポロジカル絶縁体を用いたスピン軌道トルク
磁気メモリの表面状態解明

小林

正起

東京大学

大学院工学系研 Unveiling the surface state of spin-orbital torque magnetic
memory using topological insulator
究科

Masaki Kobayashi

The University of
Tokyo

183

二重ジグザグ鎖構造をもつ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

三石

夏樹

東京大学

大学院工学系研 Time-resolved angle-resolved photoemission study ontransition metal dichalchogenides with double zigzag chains
究科

Natsuki Mitsuishi

The University of
Tokyo

184

第二種 Weyl 半金属 WTe2 の角度分解光電子分光
藤森
による研究

淳

東京大学

大学院理学系研 Angle-resolved photoemission spectroscopy study of type-II
Weyl semimetal WTe2
究科

Atsushi Fujimori

The University of
Tokyo

185

レーザー励起光電子顕微鏡を用いた抵抗変化メ
モリ材料のナノ物性計測

木下

健太郎

東京理科大学

理学部

Kentaro Kinoshita

Tokyo University of
Science

186

〃

中畝

悠介

東京理科大学

大学院理学研究科〃

Yusuke Nakaune

Tokyo University of
Science

187

〃

齋藤

修平

東京理科大学

大学院理学研究科〃

Shuhei Saitoh

Tokyo University of
Science

188 次世代レーザーとレーザー加工の基礎技術研究

吉富

大

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

Dai Yoshitomi

National Institute of
AIST

189

〃

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 of
AIST

190

〃

黒田

隆之助

産業技術総合研究所〃

Ryunosuke Kuroda

National Institute of
AIST

191

〃

盛合

靖章

産業技術総合研究所〃

Yasuaki Moriai

National Institute of
AIST

192

〃

澁谷

達則

産業技術総合研 分析計測標準研
究所
究部門

〃

Tatsunori Shibuya

National Institute of
AIST

193

〃

佐藤

大輔

産業技術総合研 分析計測標準研
究所
究部門

〃

Daisuke Satoh

National Institute ofAIST

担当所員：小林〃

Nano physical property measurement of resistance change
memory material using laser excited photo-emission
microscope

洋平

先端オペランド計測
技術オープンイノベ
ーションラボラトリ
先端オペランド計測
技術オープンイノベ
ーションラボラトリ

112

No.

課題名

194 超高速分光用ファイバーレーザーの開発

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018

Toyota Physical andChemical ResearchInstitute

末元徹

豊田理化学研究所

藤本靖

千葉工業大学

工学部

Development on fiber power combiner for GaN semiconductor
Yasushi Fujimoto
lasersChiba Institute ofTechnology

関西学院大学

理工学部

Development of a Yb-fiber-laser based pulse amplification
systemJunko Omachi

Kansei Gakuin
University

Laser modification of carbon fiber by short wavelength pusledlaser

Masahiro Moriyama

The University of
Tokyo

195

青色半導体レーザー用ファイバ型光コンバイナ
の開発

196

Yb ファイバーレーザーベースの光増幅システム
大間知
の作製

潤子

Development of fiber laser for ultrafast optical spectroscopy

Tohru Suemoto

197 短波長パルスレーザーによる炭素繊維の改質

森山

匡洋

東京大学

大学院理学系研究科付属フォトンサ
イエンス研究機構

198 レーザー加工状態の分光測定に関する研究

山口

誠

秋田大学

大学院理工学研 Study on laser modification by using optical spectroscopic
measurement
究科

Makoto Yamaguchi

Akita University

199

富田

卓朗

徳島大学

大学院社会産業
理工学研究部

Takuro Tomita

Tokushima University

200 鉛ハライド薄膜における時間分解差分吸収分光

牧野

哲征

福井大学

学術研究院工学 Time-resolved differential absorption spectroscopy in leadhalide thin films
系部門

Takayuki Makino

University of Fukui

201

山出

拓史

福井大学

大学院工学研究
科

Takuji Yamade

University of Fukui〃

担当所員：板谷

〃

治郎

〃

〃

一般研究員・大阪大学 先端強磁場科学研究センター / General Researcher・Center for Advanced High Magnetic Field Science Osaka University
No.

課題名

担当：萩原

氏名

所属

Title

Name

Organization

政幸（大阪大学）

1

新しい試薬によるタンパク質の磁気浮上結晶化
手法

牧祥

2

均一粒径モリブデン銅の強磁場磁化過程

浅野

3

ワイル半金属単結晶におけるベリー位相の磁場
方位依存性の研究

4
5

Protein crystallization under the magnetic levitation methodby using new precipitant agent

Syou Maki

Osaka Ohtani
University

Takayuki Asano

University of Fukui

大阪大谷大学

薬学部

貴行

福井大学

学術研究院工学 High-field magnetization process on uniform particle size
copper molybdate
系部門

村川

寛

大阪大学

大学院理学研究 Evaluation of Berry's phase in various magnetic field direction
Hiroshi Murakawa
in Weyl semimetal
科

Osaka University

〃

駒田

盛是

大阪大学

大学院理学研究科

Osaka University

2 次元三角格子反強磁性体 Mn(OH)2 の強磁場
ESR および強磁場磁化

佐藤

博彦

中央大学

理工学部

〃

Moriyoshi Komada

High-field ESR and high-field magnetization of two-dimensional
Hirohiko Sato
triangular-lattice antiferromagnet Mn(OH)2

Chuo University

No.

課題名

6

〃

大寺

翔也

中央大学

理工学研究科7

自発磁化を有する層状ディラック電子系物質におけるキャリア濃度と磁性の関係

酒井

英明

大阪大学

8

〃

藤村

飛雄吾

9

〃

中川

10

フタロシアニン分子系伝導体で観測される巨大磁気抵抗に対する遷移金属置換の効果

11

〃

12

カゴメ格子反強磁性体の強磁場磁化過程測定

氏名

所属

Title

Name

〃

Shoya Ohtera

Chuo University

大学院理学研究 Carrier density dependence of magnetic properties for alayered Dirac material with canted antiferromagnetic order科

Hideaki Sakai

Osaka University

大阪大学

大学院理学研究科〃

Hyugo Fujimura

Osaka University

賢人

大阪大学

大学院理学研究科〃

Kento Nakagawa

Osaka University

花咲

徳亮

大阪大学

大学院理学研究 Transition-metal-substitution Effect on Giant Magnetoresistance
Noriaki Hanasakiin Phthalocyanine-molecular Conductors
科

Osaka University

清水

智可

大阪大学

大学院理学研究
科

Tomoka Shimizu

Osaka University

吉田

紘行

北海道大学

理学研究院

Hiroyuki Yoshida

Hokkaido University

Yuto Ishii

Hokkaido Universiry

Zentaro Honda

Saitama University〃
High-field magnetization measurements on kagome lattice
antiferromagnets

Organization

ISSP Activity Report 2018

13

〃

石井

裕人

北海道大学

大学院理学院

14

リチウムをインターカレートしたフタロシアニン誘導体の磁性

本多

善太郎

埼玉大学

大学院理工学研 Magnetic properties of lithium intercalated phthalocyanine
derivatives
究科15

SmB6/SrB6 人工超格子の強磁場中での磁気抵抗 ,宍戸
ホール効果測定寛明

大阪府立大学

大学院工学研究 Mgnetoresistance and Hall effect measurements for SmB6/SrB6
Hiroaki Shishido
artificial superlattices under high magnetic field科

Osaka Prefecture
University

幸塚

祐哉

大阪府立大学

大学院工学研究
科

Yuya Kozuka

Osaka Prefecture
University

野口悟

大阪府立大学

大学院理学系研
Development of the cryostat for pulsed high magnetic field
究科

Satoru Noguchi

Osaka Prefecture
University

Ryo Tsuchida

Osaka Prefecture
University

16
17

〃
パルス強磁場用極低温実験装置の開発

〃

〃

113

18

〃

土田

稜

大阪府立大学

大学院理学系研
究科

19

CaBaM4O7 (M=(Ca,Fe)) 単結晶試料の強磁場下での磁化・電気分極・ESR 測定

桑原

英樹

上智大学

理工学部

Magnetization, electric polarization, and ESR measurements
for CaBaM4O7 (M=(Ca,Fe)) single crystals in pulsed highmagnetic fields

Hideki Kuwahara

Sophia University20

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

Magnetic properties of strongly correlated electron systems
under a pulsed high magnetic field

Tetsuya Takeuchi

Osaka University

21

〃

大貫

惇睦

琉球大学

理学部

Yoshichika Onuki

University of the
Ryukyus22

磁性不純物をドープしたトポロジカル結晶絶縁体の強磁場物性

浦田

隆広

名古屋大学

大学院工学研究 Physical properties of magnetic impurity doped topologicalcrystalline insulator under high magnetic field科

Takahiro Urata

Nagoya University

〃

〃

114

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 201823

正四角台塔反強磁性体の強磁場中 ESR 測定

木村

健太

東京大学

大学院新領域創 High-field ESR measurements of square-cupola-based
antiferromagnets
成科学研究科

Kenta Kimura

The University of
Tokyo

24

パルス強磁場を用いた圧力下 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 ESR systemusing pulse high fieldーTakahiro Sakurai

Kobe

25

単軸性キラル磁性体の磁気特性測定
クと磁気共鳴測定−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−磁気トル

University

26

〃

片山

諒

大阪府立大学

大学院工学研究科〃

Ryo Katayama

Osaka Prefecture
University

27

〃

島本

雄介

大阪府立大学

大学院工学研究科〃

Yusuke Shimamoto

Osaka Prefecture
University

ESR measurements under high magnetic fields on a triangularantiferromagnet

Yusuke Nambu

Tohoku University28

三角格子反強磁性体の強磁場 ESR

南部

雄亮

東北大学

金属材料研究所

29

単核遷移金属錯体のゼロ磁場分裂と動的磁性の
関係

福田

貴光

大阪大学

大学院理学研究 Relationship between zero-field splittings and dynamic
magnetism of monocuclear transition metal complexes
科

Takamitsu Fukuda

Osaka University

30

〃

石崎

聡晴

大阪大学

大学院理学研究科

Toshiharu Ishizaki

Osaka University31

強磁場電子スピン共鳴による有機磁性体の磁場
誘起量子相の解明

細越裕子

大阪府立大学

大学院理学系研 High-field ESR study on the field-induced quantum phases oforganic radical crystals
究科

Yuko Hosokoshi

Osaka Prefecture
University32

フェルダジルラジカルから成る新規量子スピン系物質の強磁場物性岩崎 義己

大阪府立大学

大学院理学系研 High-field magnetic properties of new quantum spin systems
composed of verdazyl radicals
究科

Yoshiki Iwasaki

Osaka Prefecture
University

33

Ni2MnGa 系新規ホイスラー合金の超磁歪の高速
左近磁場応答性の研究

拓男

龍谷大学

理工学部

34

ノーダルライン半金属の強磁場下量子振動測定

村川

寛

大阪大学

大学院理学研究 High magnetic study on quantum transport properties in the
nodal line semimetal
科

35

パルス磁場を用いたマルテンサイト変態の時間依存性に関する研究

福田

隆

大阪大学

大学院工学研究 Study on time dependence of martensitic transformation using
Takashi Fukuda
pulsed high magnetic field科

Osaka University

36

強いスピン - 軌道相互作用を活かした酸化物スピ
松野
ントロニクス

丈夫

大阪大学

大学院
理学研究科

Osaka university〃

Research on time dependences of magnetstriction of Ni2MnGa
Takuo Sakon
type Heusler alloys

Oxide spintronics utilizing strong spin-orbit coupling

Hiroshi Murakawa

Matsuno Jobu

Ryukoku University
Osaka University

物質合成・評価設備 G クラス / Materials Synthesis and Characterization G Class Researcher
No.
1

課題名
単結晶 CaMn1-xSbxO3 の誘電特性の研究

氏名
谷口

晴香

所属
岩手大学

理工学部

Title
Study of dielectric properties of single crystalline
CaMn1-xSbxO3

NameHaruka Taniguchi

Organization
Iwate University

No.

課題名

2

擬二次元遍歴電子磁性体 Co3Sn2S2 の低温構造

和氣

剛

京都大学

大学院工学研究 Low temperature structure of quasi-two dimensional itinerant
electron magnet Co3Sn2S2
科

Takeshi Waki

Kyoto University

3

高温高圧水・アルコール中の固体酸・塩基触媒
反応の速度論的検討

秋月

信

東京大学

大学院新領域創 Kinetics on solid acid and base catalyzed reactions in hotcompressed water and alcohol
成科学研究科

Makoto Akizuki

The University of
Tokyo

4

プロトン伝導性固体電解質薄膜を用いた低温作
動燃料電池・電解合成セルの開発

大友

順一郎

東京大学

Development of low-temperature solid oxide fuel cells and
大学院新領域創electrolysis cells using proton-conducting solid electrolyte thin Junichiro Otomo
成科学研究科films

The University of
Tokyo

5

〃

松尾

拓紀

東京大学

大学院新領域創成科学研究科

Hiroki Matsuo

The University of
Tokyo

6

ケミカルループ法における酸素放出型粒子開発

大友

順一郎

東京大学

大学院新領域創
Development of oxygen releasing particle in chemical looping
成科学研究科

Junichiro Otomo

The University of
Tokyo

7

〃

七瀬

浩希

東京大学

大学院新領域創成科学研究科Koki Nanase

The University of
Tokyo

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

8

新規プロトン - 電子混合伝導体の開

氏名

所属

Title

〃

〃

Name

Organization

ISSP Activity Report 2018

115

9

〃

小城

元

東京大学

大学院新領域創成科学研究科10

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

11

〃

長谷川

卓利

東京大学

大学院新領域創成科学研究科

Takuto Hasegawa

The University of
Tokyo

12

同位体分析によってアンモニア電解合成機構の
解明

大友

順一郎

東京大学

A Study of the Relationship between the Mechanisms of
大学院新領域創Ammonia Electrosynthesis and Electrode Structures by
成科学研究科
Deuterium Isotopic Analysi

Junichiro Otomo

The University of
Tokyo

13

〃

李

東京大学

大学院新領域創成科学研究科Li, Chien-I

The University of
Tokyo

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

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

東京大学

大学院新領域創成科学研究科Martin Keller

The University of
Tokyo

東京大学

大学院新領域創 New cell design of metal supported intermediate temperature
proton conducting SOFC
成科学研究科

Junichiro Otomo

The University of
Tokyo

14

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

15

〃

陸

16

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

17

〃

18

中温作動プロトン伝導型固体酸化物燃料電池の新規メタルサポートセル設計

建毅
順一郎
疎桐
順一郎

マーチン
ラー
大友

ケ

順一郎

〃

〃

〃

〃

〃

116
ISSP Activity Report 2018

No.

課題名

19

〃

阪田

一真

東京大学

大学院新領域創成科学研究科20

熱分解型ケミカルループ法のシステム設計および酸素キャリア開発

大友

順一郎

東京大学

大学院新領域創 Development of oxygen carrier materials and design of system
Junichiro Otomo
design for chemical looping systems
成科学研究科The University of
Tokyo

21

〃

引間

脩

東京大学

大学院新領域創成科学研究科Shu Hikima

The University of
Tokyo

22

エネルギー貯蔵型燃料電池の電極活物質の開発

大友

順一郎

東京大学

大学院新領域創 Development of electrode materials of energy storage type ‐fuel cells
成科学研究科

Junichiro Otomo

The University of
Tokyo

23

〃

中西

泰介

東京大学

大学院新領域創成科学研究科

Taisuke Nakanishi

The University of
Tokyo

24

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

25

〃

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

大友

順一郎

東京大学

大学院新領域創 Development of composite electrolyte and microelectrochemical measurement method
成科学研究科

Junichiro Otomo

The University ofTokyo

Nasu Yuta

The University of
Tokyo

26

複合電解質及び局所電気化学測定手法の開発

氏名

所属

Title
〃

〃

〃

〃

Name
Kazuma Sakata

Organization
The University of
Tokyo

27

〃

那須

雄太

東京大学

大学院新領域創成科学研究科28

輸送現象の解明と燃料電池性能向上に向けたプ
ロトン導電性固体電解質の合成

大友

順一郎

東京大学

Preparation of proton-conducting solid electrolytes for
大学院新領域創determination of charged-defect transport and improvement of Junichiro Otomo
成科学研究科
solid oxide fuel cells

29

〃

30

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

31

〃

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

東京大学

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

Takehiko Sasaki

The University of
Tokyo

Takahito Saito

The University of
Tokyo

32

オルティス コラレス フリア 東京大学
ン アンドレス

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

岳彦

大学院新領域創成科学研究科〃〃〃The University ofTokyo

Ortiz Corrales Julian The University ofAndres
Tokyo

33

〃

斎藤

貴仁

東京大学

大学院新領域創成科学研究科34

高温高圧水の固体触媒表面性質への影響の評価

大島

義人

東京大学

大学院新領域創 Effects of high temperature and pressure water on surface
properties of solid catalyst
成科学研究科Yoshito Oshima

The University of
Tokyo

35

〃

高橋

侑佳

東京大学

大学院新領域創成科学研究科Takahashi Yuka

The University of
Tokyo

〃

〃

No.
36

課題名
六方晶フェライトの非磁性サイト置換効果

氏名

所属

Title

Name

Organization

植田

浩明

京都大学

大学院理学研究
Non-magntic site substitution effect of hexagonal ferrites
科

Hiroaki Ueda

Kyoto university

Jun-ichi Masuda

Kyoto University

37

〃

増田

順一

京都大学

大学院理学研究科38

高温高圧水―アルコール混合溶媒が金属酸化物
ナノ粒子の合成に与える影響の解明

大島

義人

東京大学

大学院新領域創 Analysis of the effect of water-alcohol mixture on metal oxide
nanoparticle synthesis
成科学研究科Yoshito Oshima

The University of
Tokyo

39

〃

劉

東京大学

大学院新領域創成科学研究科Liu Yuan

The University of
Tokyo

40

アンモニア電解合成における選択性向上の検討

大友

順一郎

東京大学

大学院新領域創Study on promotion of selectivity in ammonia electrosynthesis Junichiro Otomo
成科学研究科The University of
Tokyo

41

〃

山本

和範

東京大学

大学院新領域創成科学研究科Kazunori Yamamoto

The University of
Tokyo

源

〃

〃

〃

42

重元素 5d 遷移金属化合物における新超伝導体探
岡本
索

佳比古

名古屋大学

大学院工学研究 Exploration of New Superconductors in 5d Electron Systemwith Heavy Transition Metal Elements
科

Yoshihiko Okamoto

Nagoya University

43

超臨界水中の ZnO ナノ粒子合成における共存イ
大島
オンの影響

義人

東京大学

大学院新領域創 Effects of coexisting ions on synthesis of zinc oxide nanoparticles in supercritical water
成科学研究科Yoshito Oshima

The University ofTokyo

Yasuhiko Orita

The University of
Tokyo

ISSP Activity Report 2018

44

〃

織田

耕彦

東京大学

大学院新領域創成科学研究科45

超臨界水中のバイオマス改質反応へのゼオライ
トの利用

大島

義人

東京大学

大学院新領域創 Utilization of modified zeolites for biomass reactions insupercritical water
成科学研究科Yoshito Oshima

The University of
Tokyo

46

〃

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

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

〃

〃

47

触媒反応の insitu ラマン散乱測定

佐々木

48

超高圧直接窒化反応による多窒化物の合成

丹羽

健

名古屋大学

大学院工学研究 Synthesis of pernitrides via direct nitridation of elements under
Ken Niwa
high pressure
科

Nagoya University

Tomoki Iizuka

Nagoya university

117

49

〃

飯塚

友規

名古屋大学

大学院工学研究科

50

超高圧合成法による新規遷移金属リン化物の創製と結晶化学

丹羽

健

名古屋大学

大学院工学研究 High pressure synthesis and crystal chemistry of noveltransition metal phosphides科

Ken Niwa

Nagoya University

51

〃

松尾

拓

名古屋大学

大学院工学研究
科

Taku Matsuo

Nagoya University

52

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

〃

〃

118

No.

課題名

53

〃

ISSP Activity Report 201854

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

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 ofTokyo

Kazuhiko Tanaka

The University of
Tokyo

〃

55

〃

田中

和彦

東京大学

大学院工学系研
究科

56

リチウムイオン伝導体 Li3BP2O8 の高圧相合成

廣瀬

瑛一

名古屋大学

大学院工学研究 High pressure synthesis of a novel lithium ion conductor
Li3BP2O8
科

Eiichi Hirose

Nagoya University

57

超高圧力合成法による Pb- 遷移金属系新規化合
物の合成

佐々木

名古屋大学

大学院工学研究 High-pressure synthesis of novel Pb-transition metalcompounds
科

Takuya Sasaki

Nagoya University

58

〃

位田

昌鴻

名古屋大学

大学院工学研究科

Masahiro Inden

Nagoya University

59

高圧下におけるアミノ酸の圧力誘起反応の観察

藤本

千賀子

東京大学

大学院理学系研
Pressure-induced reaction of amino acids under high pressure
究科

Fujimoto Chikako

The University of
Tokyo

60

新規 MO-Al2O3 系（M = Mg, Ca, Sr, Ba）蛍光体の高圧力合成

佐々木

拓也

名古屋大学

大学院工学研究 High-pressure synthesis of novel phosphors in MO-Al2O3
system (M = Mg, Ca, Sr, Ba)科

Takuya Sasaki

Nagoya University

61

〃

森

名古屋大学

大学院工学研究
科

Yuito Mori

Nagoya university

62

希土類元素を充填した新規スクッテルダイト型
熱電材料の高圧合成

関根

ちひろ

室蘭工業大学

大学院工学研究 High-pressure synthesis of new rare-earth-filled skutteruditetype thermoelectric materials
科

Chihiro Sekine

Muroran Institute ofTechnology

63

〃

星野

愛

室蘭工業大学

大学院工学研究
科

Megumi Hoshino

Muroran Institute ofTechnology

64

高温高圧下における下部マントル鉱物への窒素
の取り込み

福山

鴻

東京大学

大学院理学系研 Nitrogen incorporation into the lower-mantle minerals underhigh pressure and high temperature
究科

Ko Fukuyama

The University of
Tokyo

65

高圧下での MoSi2 型構造の FeAl2 結晶の作製

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

薫

東京大学

大学院新領域創 Synthesis of Al-Ir 1/0-Icosahedral Approximant Semiconductor
Kaoru Kimura
by high-pressurization
成科学研究科The University of
Tokyo

Yutaka Iwasaki

The University ofTokyo

Tetsuji Saito

Chiba Instiute ofTechnology

66
67

〃

拓也

高圧印加による Al-Ir 1/0 近似結晶半導体の作製 木村

唯人

68

〃

岩崎

祐昂

東京大学

大学院新領域創成科学研究科69

新しい希土類磁石の探求齋藤哲治

千葉工業大学

工学部

〃

〃

〃

〃

〃

〃
Research of new rare-earth magnets

No.

課題名

氏名

所属

70

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

71

プラズマ／氷界面反応場を用いたナノ構造物質
の合成

榊原

72

ナノ構造材料を用いた省エネルギーデバイス開
発

細野

73

新規金属窒化物半導体の超高圧創製と光学特性

長谷川

正

名古屋大学

74

〃

野村

俊介

75

新規複合アニオン層状化合物の超高圧合成と結晶育成および物性

長谷川

76

〃

Name

Organization

Yuki Makinose

Shimane University

Noritaka Sakakibara

The University ofTokyo

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

大学院工学研究 Synthesis and optical properties of novel semiconductive
metal-nitrides in ultra-high pressures
科

Masashi Hasegawa

Nagoya University

名古屋大学

大学院工学研究
科

Shunsuke Nomura

Nagoya University

正

名古屋大学

大学院工学研究 High pressure synthesis, crystal growth and physical properties
Masashi Hasegawa
of novel layer-structure compounds
科

Nagoya University

生駒

鷹秀

名古屋大学

大学院工学研究
科

Takahide Ikoma

Nagoya University

東京大学

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

Riko Iizuka-Oku

The University of
Tokyo

佑旗

Title
Study of shape changing of Fe doepd ceria nanoparticles
synthesized by oleate-modified hydrothermal method

島根大学

総合理工学部教貴

東京大学

大学院新領域創 Synthesis of nano-structured materials with plasma/ice
interface
成科学研究科英司

産業技術総合研 省エネルギー研 Development of devices for energy conservation by using
nanostructured materials
究所
究部門

〃

〃

ISSP Activity Report 2018

119

77

新規超伝導物質合成と物性評価

飯塚

理子

78

Pr1-xCaxFeO3 (0.1 ≦ x ≦ 0.9) の高温における磁性と熱電特性に関する研究

中津川博

横浜国立大学

大学院工学研究 Magnetism and thermoelectric properties at high temperaturein Pr1-xCaxFeO3 (0.1 ≦ x ≦ 0.9)
院

Hiroshi Nakatsugawa

Yokohama National
University

79

準結晶・近似結晶の磁性に関する研究

鈴木

慎太郎

東京理科大学

基礎工学部

Magnetism of quasicrystal and approximants

Shintaro Suzuki

Tokyo University of
Science80

ハーフメタルホイスラー合金の遍歴電子磁性体のスピンゆらぎ理論による解析に関する研究

重田

出

鹿児島大学

大学院理工学研 Study on analysis of half-metallic Heusler alloys by the spin
fluctuation theory for itinerant electron magnetism
究科

Shigeta Iduru

Kagoshima University81

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

82

〃

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

83

貫入型三元系遷移金属炭化物窒化物の単結晶育
成

和氣

剛

京都大学

大学院工学研究 Single crystal growth of interstitial ternary transition metal
nitride and carbide
科

Takeshi Waki

Kyoto University84

非共面的磁気構造を有する磁性体における電子物性に関する研究

木村

剛

東京大学

大学院新領域創 Investigation of electronic properties in magnetic systems with
Tsuyoshi Kimura
non-coplanar spin structure
成科学研究科The University of
Tokyo

85

電子ネマティシティを有する新規超伝導物質合成と物性評価

水上

雄太

東京大学

大学院新領域創 Synthesis and characterization of novel superconductors withelectron nematicity
成科学研究科Yuta Mizukami

The University of
Tokyo

86

〃

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

〃

〃

120
ISSP Activity Report 2018

No.

課題名

87

〃

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

88

〃

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

89

〃

石原

滉大

東京大学

大学院新領域創成科学研究科〃

Kota Ishihara

The University of
Tokyo

90

〃

辻井

優哉

東京大学

大学院新領域創成科学研究科〃

Masaya Tsujii

The University of
Tokyo

有馬

孝尚

東京大学

大学院新領域創
Exploration of new noncentrosymmetric magnets
成科学研究科Taka-hisa Arima

The University of
Tokyo

91

空間反転対称性を持たない新規磁性体の開発

氏名

所属

Title

Name

Organization

92

〃

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

93

〃

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

94

〃

鷲見

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

95

〃

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

96

〃

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

97

〃

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

98

〃

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

99

〃

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

100

〃

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

101

〃

尾亦

恭輔

東京大学

大学院新領域創成科学研究科〃Kyosuke Omata

The University of
Tokyo

102

〃

西

東京大学

大学院新領域創成科学研究科〃

Kenta Nishi

The University of
Tokyo

103

〃

山本

東京大学

大学院新領域創成科学研究科〃

Keisuke Yamamoto

The University of
Tokyo

健太
圭祐

No.

課題名

氏名

所属

104

〃

渡辺

義人

東京大学

大学院新領域創成科学研究科105

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

片山

尚幸

名古屋大学

106

〃

小林

慎太郎

107

〃

前田

108

析出現象を用いた銅合金中における磁性ナノ粒子の物性調査坂倉

109

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

Title

Name

Organization

Yoshito Watanabe

The University ofTokyo

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

名古屋大学

大学院工学研究
科〃

Shintaro Kobayashi

Nagoya University

秦

名古屋大学

大学院工学研究科〃

Shin Maeda

Nagoya University

響

横浜国立大学

大学院工学府

Hibiki Sakakura

Yokohama National
University

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 Cu ‐ Ni base alloys single Crystal
院

Mahoto Takeda

Yokohama National
University

Shintaro Matai

Yokohama National
University〃

Investigation of nano-scale magnetic properties comprising
ferromagnetic element atoms in copper alloys

110

〃

又井

慎太郎

横浜国立大学

大学院工学府111

非共面的磁気構造を有する磁性体における電子物性に関する研究

木村

健太

東京大学

大学院新領域創 Investigation of electronic properties in magnetic systems with
Kenta Kimura
non-coplanar spin structure
成科学研究科The University of
Tokyo

112

〃

勝吉

司

東京大学

大学院新領域創成科学研究科〃

Katsuyoshi Tsukasa

The University of
Tokyo

113

〃

三澤

龍介

東京大学

大学院新領域創成科学研究科〃

Misawa Ryusuke

The University of
Tokyo

〃

ISSP Activity Report 2018

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

課題名

1

宇宙線望遠鏡に用いる反射鏡の UV 照射後の反
射率測定

野田

浩司

2

光反応による機能性酸化物薄膜の製膜機構

松林

康仁

3

PSA によるバイオガス浄化システム : 自然粘土を布浦鉄兵
用いた CO2 及び H2S の吸着

121

4

〃

5

プラズマ風洞による宇宙往還機熱防護システムの動的酸化に関する研究

氏名ジェニファー
チャー ウ
ィーファン
桃沢

愛

所属
東京大学

宇宙線研究所

Title
Reflectance measurement of the mirrors used in cosmic raytelescops, after an exposure to UV radiation

Name
Koji Noda

センターグリーMechanism of photo-assisted deposition of functional oxide
Yasuhito
産業技術総合研
ンデバイ材料研
thin films
Matsubayashi
究所
究チーム
Biohydrogen purification through utilization of pressure swing
環境安全研究セ
adsorption:Natural Japanese clay as an adsorbent for CO2 and Teppei Nunoura
東京大学
ンター
H2S
東京大学

大学院新領域創成科学研究科東京都市大学

工学部医用工学 Investigation on dynamic oxidation of thermal protection
system using plasma wind tunnel
科〃

Organization
The University of
Tokyo
National Institute ofAIST
The University ofTokyo

Jennifer Chia Wee
Fern

The University ofTokyo

Ai Momozawa

Tokyo City University

122
ISSP Activity Report 2018

No.

課題名

氏名

6

〃

田中

聖也

東京大学

7

〃

山田

慎

8

高温高圧水による廃棄リチウムイオン電池リサ
イクル技術に関する研究

布浦

鉄兵

9

〃

シュウ
メイ

10

光ファイバーセンシング技術を利用した泥岩中の化学的浸透現象に伴う岩石の局所的変形の計
測

廣田

11

マイクロミキサを用いた機能性無機ナノ粒子の
連続合成

陶

12

靜電浮遊法を用いた過冷却液体急冷法によるボロン系準結晶の探索

木村

薫

東京大学

13

〃

髙橋

昂宏

14

バングラデシュ南部デルタ沿岸地域における地下水位変動と塩の起源

マスドゥル
ラハマン

ユウ

翔伍

所属

Title

Name

Organization

大学院工学系研
究科〃

Seiya Tanaka

The University of
Tokyo

東京大学

大学院工学系研
究科〃

Shin Yamada

The University of
Tokyo

東京大学

環境安全研究セ Study on recycling of waste lithium ion batteries using hot
compressed water
ンター

Teppei Nunoura

The University of
Tokyo

東京大学

大学院新領域創成科学研究科

Zhou Yiming

The University of
Tokyo

東京大学

大学院新領域創 Measure of local deformation of mudstones caused bychemical osmosise with optical fiber sensing technique
成科学研究科

Shogo Hirota

The University ofTokyo

Sue Kiwamu

National Institute ofAdvanced Industrial
Science and Technology

大学院新領域創 Search for quasicrystalline boron using rapid quenching fromsuper-cooled liquid by levitation
成科学研究科

Kaoru Kimura

The University of
Tokyo

東京大学

大学院新領域創成科学研究科Takahiro Takahashi

The University of
Tokyo

東京大学

Water-level fluctuations and salinity sources of groundwater
環境システム学
systems in the southern deltaic coastal areas of Bangladesh: A Masudur Rahman
専攻
multi-methodological

産業技術総合研 化学プロセス
究所
研究部門

究

〃

Continuous synthesis of functional inorganic nanoparticles
using a micromxer〃

The University ofTokyo

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

課題名

氏名

1

メタンの固体表面での吸着と活性化に関する研究

セプティア
エカ マルシ
ャ プトラ

所属
大阪大学

Title

大学院工学研究 Study on anomalous valence flustuation of YbPd underhighpressure at extremely low temperatures
科

Name
Septia Eka Marsha
Putra

Organization
Osaka University

平成 30 年度 中性子科学研究施設 共同利用課題一覧 / Joint Research List of Neutron Scattering Researcher 2018
No.

課題名

氏名

所属

Title

Name

Organization

・ 申請装置 4G: GPTASISSP Activity Report 2018

1

GPTAS（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

新奇三角格子系 Yb3Ni11Ge4 の磁気励起

佐藤

卓

東北大学

多元物質科学研 Magnetic excitations in the new quantum triangular-latticecompound Yb3Ni11Ge4
究所

Taku J Sato

Tohoku University

4

時間分割中性子散乱測定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

Ba2Zn2Fe12O22 および BaFe12O19 系六方晶フェ内海
ライトの磁気構造と超交換相互作用

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

7

Sr2Ruo4 の非弾性散乱

古川

はづき

8

空間反転対称性の破れた超伝導体の非弾性散乱

古川

9

トポロジカル超伝導体の非弾性散乱

古川10

物理 Real-time observation of magnetic structural change by means
Kiyoichiro Motoya
of time-resolved neutron scattering

機械工 Magnetic structure and superexchange interaction ofhexagonal ferrite Ba2Zn2Fe12O22 and BaFe12O19 systems

Tokyo University of
Science

123

Shigenori Utsumi

Tokyo University of
Science, Suwa

A study of magnetic state in ferromagnetic superconductors

Hazuki Furukawa

Ochanomizu
University

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

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

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
University

多段メタ磁性転移を示す空間反転対称性の破れた Ce 系化合物 CeTSi3(T = Pd, Pt) における磁気 吉田
構造の決定

雅洋

東京大学

物性研究所附属 Determination of the Magnetic Structure of the
中性子科学研究 Noncentrosymmetric Heavy-Electron Metamagnet CeTSi3(T = Pd, Pt)
施設

Masahiro Yoshida

The University of
Tokyo

11

二次元ダイマー反強磁性体におけるトリプロン
励起

那波

和宏

東北大学

多元物質科学研 Triplon excitations in the two-dimensional dimer
antiferromagnet
究所

Kazuhiro Nawa

Tohoku University12

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

13

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

14

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

15

DyMnO3 の高圧力相の磁気秩序の探査

典樹

物質材料研究機 中性子散乱グル Investigation of magnetic ordering in the high-pressure phaseof DyMnO3
構
ープ

門脇

寺田

Establishment of the unified explanation about the phasetransition mechanism (displacive and order-disorder type) in
Ferroelectrics

Quantum spin fluctuations and crystal field of the pyrochlore
magnet Tb2Zr2O7

Hirotake Shigematsu Yamaguchi University
Hiroaki Kadowaki

Tokyo Metoropolitan
University

Hiroshi Takatsu

Kyoto University

Noriki Terada

National Institute forMaterials Science

124

No.
16

課題名
熱電材料 Mg3Sb2 のフォノンダイナミクス

氏名
李

哲虎

所属

Title

Name

Organization

ISSP Activity Report 2018

産業技術総合研 省エネルギー研
Phonon dynamics on thermoelectric material of Mg3Sb2
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology

Takatsugu Masuda

The University ofTokyo・ 申請装置 5G: PONTA
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

18

時間分割中性子散乱測定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

19

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

Charge and magnetic order of magnetoplumbite-type cobalt
oxide SrCo12O19

Shinichiro Asai

The University of
Tokyo

20

ダブルペロブスカイト型コバルト酸化物
Sr2CoNbO6 の磁気秩序

浅井

晋一郎

東京大学

物性研究所

Magnetic order of double perovskite cobalt oxide Sr2CoNbO6

Shinichiro Asai

The University of
Tokyo

21

偏極中性子散乱による LaCo0.8Rh0.2O3 の新奇な浅井
強磁性磁気秩序の研究

晋一郎

東京大学

物性研究所

Polarized neutron diffraction study on a novel type offerromagnetic order of LaCo0.8Rh0.2O3

Shinichiro Asai

The University of
Tokyo

22

励起子絶縁体候補物質 LaCo0.97Rh0.03O3 の中性
浅井
子散乱

晋一郎

東京大学

物性研究所

Neutron Scattering for Excitonic Insulator Candidate
LaCo0.97Rh0.03O3

Shinichiro Asai

The University of
Tokyo

23

スピン状態クロスオーバーが起こるコバルト酸
化物 Sr2CoNbO6 の中性子非弾性散乱研究

浅井

晋一郎

東京大学

物性研究所

Inelastic neutron scattering study of spin-state crossover for
double perovskite cobalt oxide Sr2CoNbO6

Shinichiro Asai

The University of
Tokyo

24

マルチフェロイック物質 Ba2CoGe2O7 における
磁気モーメントの完全電場制御

益田

隆嗣

東京大学

物性研究所

Full control of magnetic moment in multiferroics Ba2CoGe2O7

Takatsugu Masuda

The University of
Tokyo

25

三角スピンチューブ CsCrF4 の圧力下中性子回折 益田

隆嗣

東京大学

物性研究所

Neutron diffraction experiment on triangular spin tube CsCrF4 Takatsugu Masuda

The University of
Tokyo

26

マルチフェロイック Ca2CoSi2O7 の磁場下における磁気構造解析

益田

隆嗣

東京大学

物性研究所

Magnetic structure analysis on multiferroic Ca2CoSi2O7 inmagnetic field

Takatsugu Masuda

The University of
Tokyo

27

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

岡山大学

異分野基礎科学Chiral Helimagnetim in Chiral Inorganic Compound CsCuCl3
研究所

Yusuke Kousaka

Okayama University

28

URu2Si2 の隠れた秩序に伴う多重極秩序の直接
観測

高阪

勇輔

岡山大学

異分野基礎科学 Direct Observation of the "Hidden Order" due to Multipole
Ordering in URu2Si2
研究所

Yusuke Kousaka

Okayama University

29

偏極解析を用いた Zn-Nd-Zn 単分子磁石の磁気
弾性散乱の検出古府麻衣子

日本原子力研究 中性子利用セ
開発機構
クション

Maiko Kofu

Japan Atomic Energy
Agency30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 iron-based superconductors
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology31

磁場中の中性子回折を利用した Cu3(P2O6OD)2の基底状態の研究

長谷

物質・材料研究 中性子散乱グル The investigation on the ground state of Cu3(P2O6OD)2 using
neutron diffraction in magnetic fields
機構ープ

Masashi Hase

National Institute forMaterials Science

哲虎
正司

IRT project of PONTA

物理 Real-time observation of magnetic structural change by means
Kiyoichiro Motoya
of time-resolved neutron scattering

Detection of magnetic scattering of Zn-Nd-Zn single moleculemagnet using polarization analysis

Tokyo University of
Science

No.

課題名

氏名

32

磁場中の中性子回折を利用した K2Cu3O(SO4)3の基底状態の研究

33

メイプルリーフ化合物 MgMn3O7・3D2O の磁気
浅井
構造

長谷

所属

Title

正司

物質・材料研究 中性子散乱グル The investigation on the ground state of K2Cu3O(SO4)3 using
neutron diffraction in magnetic fields
機構
ープ

晋一郎

東京大学

物性研究所

大学院理学研究
IRT project of TOPAN
科

Name
Masashi Hase

Magnetic Structure of Maple Leaf Compound MgMn3O7・3D2O Shinichiro Asai

Organization
National Institute forMaterials Science
The University ofTokyo・ 申請装置 6G: TOPAN
34

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

35

近藤半金属におけるワイルフェルミオンの磁気
状態

岩佐

和晃

茨城大学

36

PrT2X20 (T = Rh, 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

37

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

38

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

39

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 ofTokyo

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

Keisuke Tomiyasu

Tohoku University

Magnetic states of Weyl fermion in Kondo semimetals

Kazuaki Iwasa

Ibaraki University

Two-channel Kondo effect in PrT2X20 (T = Rh, Ir, X = Al, Zn)

Kazuaki Iwasa

Ibaraki University

Magnetic Impurity Effect on the Metal-Nonmetal Transition
Kazuaki Iwasa
Associated with Totally-Symmetric Electron Multipole Ordering

Ibaraki University

・ 申請装置 C1-1: HER

ISSP Activity Report 2018

125

40

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

41

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 University42

a-Cu2V2O7 のマグノン電場効果

佐藤

卓

東北大学

多元物質科学研 Inelastic neutron scattering measurements on the a-Cu2V2O7
under electric field
究所

Taku J Sato

Tohoku University

43

フラストレイト近藤化合物 Ce5Si3 の磁気構造と小林
ダイマー構造の研究

理気

琉球大学

理学部

Study of Magnetic and Dimer Structure in Frustrated Kondo
Compound Ce5Si3

Riki Kobayashi

University of the
Ryukyus44

近藤半金属におけるワイルフェルミオンの磁気
状態

岩佐

和晃

茨城大学

Magnetic states of Weyl fermion in Kondo semimetals

Kazuaki Iwasa

Ibaraki University

45

PrT2X20 (T = Rh, 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 = Rh, Ir, X = Al, Zn)

Kazuaki Iwasa

Ibaraki University46

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

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

IRT project of HER

126

No.

課題名

氏名

所属

Title

Name

Organization

Masaki Fujita

Tohoku University

ISSP Activity Report 201847

Fe 置換により誘起される LSCO の異方的磁気秩
藤田序ピークの起源

全基

東北大学

金属材料研究所48

量子スピン液体の研究

門脇広明

首都大学東京理工学研究科物
Quantum spin liquid
理学専攻

Hiroaki Kadowaki

Tokyo Metoropolitan
University49

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

理学部物質地球 Magnetic Fluctuations in a Non-CentrosymmetricSuperconductor CeRhSi3
科学科

Naofumi Aso

University of the
Ryukyus50

広角中性子回折による化学当量的な LuFe2O4 電
加倉井
荷 - 磁気相関の研究

総合科学研究機 中性子科学セン Wide-angle neutron diffraction investigation of charge andmagnetic correlations in stoichiometric LuFe2O4
構
ター

Kazuhisa Kakurai

Comprehensive Research
Organization for Scienceand Society (CROSS)

51

Ce(Co,Rh)In5 のネスティングと超伝導発現機構

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Nesting features and the superconducting mechanism inCe(Co,Rh)In5

Hazuki Furukawa

Ochanomizu
University

充弘

東京大学

物性研究所

IRT project of SANS-U

Mitsuhiro Shibayama

The University of
Tokyo

古川

和久

Origin of isotropic magnetic peaks induced by Fe-substitutionin LSCO・ 申請装置 C1-2: SANS-U
52

SANS-U（二次元位置測定小角散乱装置）IRT 課
柴山
題

53

アセトニトリル溶媒 Tetra-PEG ゲルの USANS
測定

Li

Xiang

東京大学

物性研究所中性
USANS measurement of acetonitrile solvent Tetra-PEG gel
子科学研究施設

Xiang LiThe University of
Tokyo

54

温度応答性ポリマーの一本鎖収縮挙動

Li

Xiang

東京大学

物性研究所中性 Single-chain shrinking behavior of temperature-responsive
子科学研究施設 polymers

Xiang LiThe University of
Tokyo

55

モデルネットワークゲルの静的均一性評価

Li

Xiang

東京大学

物性研究所中性
Static homogeneity evaluation of model network gel
子科学研究施設

Xiang LiThe University of
Tokyo

56

SANS・DSC 同時測定による 2 本鎖 DNA によりLi架橋されたモデル物理ゲルの構造解析

Xiang

東京大学

物性研究所中性 Simultaneous SANS/DSC measurement for a model physical
子科学研究施設 gel crosslinked by double-stranded DNA

Xiang LiThe University of
Tokyo

57

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

58

ブラシ状高分子中の重水素ラベルした側鎖に対する小角中性子散乱測定

中村

洋

京都大学

工学研究科高分 Small-angle neutron scattering from a deuterated labeled side
chain in brush-like polymers
子化学専攻

Yo Nakamura

Kyoto University

59

CV-SANS による DNA 存在下での制限分解酵素
の構造解析

井上

倫太郎

京都大学

複合原子力科学 Structural analysis of restriction endonuclease with theexistence of DNA by contrast variation SANS (CV-SANS)
研究所

Rintaro Inoue

Kyoto University

60

植物性食品タンパク質複合体の中性子小角散乱による構造解析

佐藤

信浩

京都大学

複合原子力科学SANS analysis of plant food protein complex structure
研究所

Nobuhiro Sato

Kyoto University61

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

62

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

Hazuki Furukawa

Ochanomizu
University

Anomalous vortex state in Sr2RuO4 studied by SANS
experiments

ISSP Activity Report 2018

No.

課題名

氏名

所属

63

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

64

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

65(Ce,Nd)CoIn5 のスピン密度波と超伝導の関係

古川

はづき

お茶の水女子大 基幹研究院 自学
然科学系

Spin Density Wave and Superconductivity on (Ce,Nd)CoIn5

Hazuki Furukawa

Ochanomizu
University66

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
University

67

トポロジカル超伝導体の磁束格子

古川

はづき

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

68

歯車状両親媒性分子からなるナノキューブの溶
液中での構造解析

守島

健

京都大学

複合原子力科学
Structural research of nano cube formed by gear-like molecule Ken Morishima研究所

69

分子混雑環境下のタンパク質，生体膜構造の研
究

平井

光博

群馬大学

理工学府

70

時計蛋白質 Kai システムにおける要素蛋白質の
動態解析

杉山

正明

京都大学

71

全イオン性高分子ミセルのナノ構造と刺激応答

松岡

秀樹

72

界面不活性の働きをする界面活性剤

貞包73

高圧条件下における 2 成分混合溶液の新奇な臨
界挙動

74

Title

Structural study of protein and biomembrane in molecular
crowding environment

Name

Organization

Kyoto University

127

Mitsuhiro Hirai

Gunma University

複合原子力科学 Anayisis for Kinetics of Componet Proteins in Kai Clock
Protein System
研究所

Masaaki Sugiyama

Kyoto University

京都大学

工学研究科高分 Nanostructure and Stimuli-responsivity of Tottaly Ionic
Polymer Micelles
子化学専攻

Hideki Matsuoka

Kyoto University

浩一朗

同志社大学

生命医科学部医Surfactant molecules behaving as surface-inactive agent
情報学科

Koichiro Sadakane

Doshisha University

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 University

コントラスト変調中性子小角散乱法によるポリビニルピロリドン保護金ナノクラスターの構造
解析

遠藤

仁

75

小角中性子散乱によるポリ（キノキサリン -2,3ジイル）の温度依存性らせん反転の機構解明

長田

裕也

76

イミダゾリウム系イオン液体中におけるエタノールクラスターの形成

高椋

利幸

佐賀大学

77

中性子小角散乱によるマルチドメイン蛋白質の溶液構造解析

中川洋

日本原子力研究 階層構造研究グ Analysisi of solution structure of multi-domain protein by
SANS
開発機構
ループ

Hiroshi Nakagawa

Japan Atomic Energy
Agency78

中性子小角散乱測定による構造材料中のナノ析
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 nano-precipitates in structural materials using small
angle scattering technique構
究拠点

Hiroaki Mamiya

National Institute forMaterials Science79

中性子散乱法によるブロック共重合体の共連続
ダブルワーク型相分離構造内における添加物の分布状態解析

山本勝宏

名古屋工業大学

Katsuhiro Yamamoto

Nagoya Institute ofTechnology

Structure of Poly(N-vinyl-2-pyrrolidone)-supported Gold高エネルギー加 物質構造科学研
Nanoclusters Investigated by Means of Contrast Variation
Hitoshi Endo
速器研究機構究所
Small-Angle Neutron Scattering
Investigation of the Mechanism of the Temperature-Dependent
Helix Inversion of Poly(quinoxaline-2,3-diyl)s by Small-angle
Nagata Yuya
京都大学
工学研究科
Neutron Scattering

大学院工学系研 Formation of Ethanol Clusters in Imidazolium-based Ionic
Liquids
究科

Distribution of Additives in Ordered-Bicontinuos-Double大学院工学研究
Network Structure Formed in Block Copolymer Systems
科
Revealed by Small Angle Neutron Scattering

High energy
accelerator researchorganization
Kyoto University

Toshiyuki Takamuku Saga University

128

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 201880

金属貯蔵原子模倣デンドリマーの構造解析

Li

Xiang

東京大学

物性研究所

Structure analysis of metal-storing atom-mimicking dendrimers Xiang Li

The University of
Tokyo

81

均一構造を持つ高分子ゲルにおける架橋点間相
関の視覚化

Li

Xiang

東京大学

物性研究所

Visualizing the correlation between branching point ofhomogeneous polymer gels

Xiang LiThe University of
Tokyo

82

生体適合性ポリオリゴエチレングリコールメタ
クリレートゲルの微細構造変化の調査

呉羽

拓真

東京大学

物性研究所

Investigation of Changes in the Microscopic Structure ofPoly(oligo ethylene glycol methacrylate)-based Hydrogels.

Takuma Kureha

The University of
Tokyo

83

MnSi における変動電流下の磁気スキルミオンの
奥山
ダイナミクス大輔

東北大学

多元物質科学研 Dynamics of magnetic skyrmion under alternative current in
MnSi
究所

Daisuke Okuyama

Tohoku University

84

SANS 測定による分子透過性ベシクルのPoly(propylene oxide) 層中の水和量の決定

西村

智貴

京都大学

工学研究科

Elucidating the degree of hydration of the poly (propyleneoxide) block in carbohydrate-b-poly(propylene oxide) blockcopolymer vesicle membranes by SANS measurements

Tomoki Nishimura

Kyoto University

85

完全に単分散な逆ミセルの構造可視化藤井翔太

北九州市立大学 環境技術研究所

Structural visualization of perfectly monodispersed reverse
micellesShota Fujii

The University of
Kitakyushu

清水

裕彦

名古屋大学

Hirohiko Shimizu

Nagoya University

間宮広明

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

Xiang LiThe University ofTokyo・ 申請装置 C1-3: ULS
86

ULS（高分解能後方散乱装置）IRT 課題

大学院理学研究
IRT project of ULS
科

・ 申請装置 C1-3: mf-SANS
87

mf-SANS（小型集束型小角散乱装置）IRT 課題

・ 申請装置 C2-3-1: iNSE
東京大学

物性研究所中性
IRT project of iNSE
子科学研究施設真史

筑波大学

数理物質系化学 Effect of variety of alkanes on fluidity and inter-leaflet coupling
Mafumi Hishidaof lipid membranes
域

Tsukuba University

貞包

浩一朗

同志社大学

生命医科学部医Surfactant molecules behaving as surface-inactive agent
情報学科

Koichiro Sadakane

Doshisha University

マルチドメイン蛋白質の動的構造と機能発現との関係性の解析中川洋

日本原子力研究 階層構造研究グ Analysis of relationship between structural dynamics andfunction of multi-domain protein
開発機構
ループ

Hiroshi Nakagawa

Japan Atomic Energy
Agency92

Mn1-xFexSi におけるスキルミオンのダイナミク
ス

左右田

稔

理化学研究所

創発物性科学研
Slow Dynamics of Magnetic Skyrmion Mn1-xFexSi
究センター

Minoru Soda

RIKEN

93

磁気スキルミオン MnSi1-xGex におけるダイナミ
左右田
クス

稔

理化学研究所

創発物性科学研
Dynamics of Magnetic Skyrmion MnSi1-xGex究センター

Minoru Soda

RIKEN

88

iNSE（中性子スピンエコー分光器 )IRT 課題

Li

Xiang

89

リン脂質膜の粘弾性および単層膜間カップリン
グに対するアルカンの効果：鎖長依存性

菱田

90

界面不活性の働きをする界面活性剤

91

No.

課題名

氏名

所属

Title

Name

Organization

・ 申請装置 C3-1-1: AGNES
94

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

95

PdPt 合金ナノ粒子中の水素の速いダイナミクス

山室

修

東京大学

物性研究所

Fast dynamics of hydrogen atoms in PdPt alloy nanoparticles

Osamu Yamamuro

The University of
Tokyo

96

PdPt 合金ナノ粒子中の水素の遅いダイナミクス

山室

修

東京大学

物性研究所

Fast dynamics of hydrogen atoms in PdPt alloy nanoparticles

Osamu Yamamuro

The University of
Tokyo

97

超高エントロピー液体・アルキル化テトラフェ
ニルポルフィリンの遅い運動

山室

修

東京大学

物性研究所

Slow dynamics of super-high entropy liquids alkylated
tetraphenylporphyrins

Osamu Yamamuro

The University of
Tokyo

正裕

京都大学

複合原子力科学
MINE1 (Multilayer neutron interferometer and reflectmeter)研究所

Masahiro Hino

Kyoto University

複合原子力科学MINE2 (Multilayer neutron interferometer and reflectmeter)研究所

Masahiro Hino

Kyoto University

Analyses of adsorbed biomolecules at the polymer/waterinterface

Hisao Matsuno

Kyushu University

Swelling Behavior of Polymer Thin Films in Mixed Nonsolvents

Keiji Tanaka

Kyushu University

IRT project of HQR

Kenji Ohoyama

Ibaraki University

・ 申請装置 C3-1-2: MINE1
98

MINE1（京大炉：多層膜中性子干渉計・反射率計）
日野
IRT 課題・ 申請装置 C3-1-2: MINE2

ISSP Activity Report 2018

129

99

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

100

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

田中

敬二

九州大学

大山

研司

茨城大学

理工学研究科

時間分割中性子散乱測定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

104 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 University105

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

106

一軸応力による 2 等辺三角格子反強磁性体
CoNb2O6 の磁区成長過程の制御

節生

東京理科大学

理学部

Uniaxial-stress-control of domain growth kinetics in isoscelestriangular lattice Ising magnet CoNb2O6

Setsuo Mitsuda

101 混合液体中における高分子薄膜の膨潤挙動

大学院工学研究
院 応用化学部門（機能）
大学院工学研究
院 応用化学部
門

・ 申請装置 T1-1: HQR
102 HQR( 高分解能中性子散乱装置 )IRT 課題103

満田

物理 Real-time observation of magnetic structural change by means
Kiyoichiro Motoya
of time-resolved neutron scattering

Tokyo University of
ScienceTokyo University of
Science

130

No.

課題名

氏名

所属

Title

Name

Organization

Masaki Fujita

Tohoku University

Masaki Fujita

Tohoku University

・ 申請装置 T1-2: AKANEISSP Activity Report 2018107

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

108

Fe 置換により誘起される LSCO の異方的磁気秩
藤田序ピークの起源

全基

東北大学

金属材料研究所

109

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

高阪

勇輔

岡山大学

異分野基礎科学 Crossover between conical and screw magnetic phase in(Mn,Mg)Cr2O4
研究所

Yusuke Kousaka

Okayama University

110 MPO4 (M: 遷移金属 ) のカイラル磁気構造の検証 高阪

勇輔

岡山大学

異分野基礎科学 Chiral Magnetism in New Chiral Magnetic Compounds MPO4
(M: Transition Metal)研究所

Yusuke Kousaka

Okayama University

111 CrX (Cr=Si, Ge) のカイラル磁気構造の検証

高阪

勇輔

岡山大学

異分野基礎科学Chiral Magnetic Structure in CrX (X=Si, Ge)
研究所

Yusuke Kousaka

Okayama University

112 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 iron-based superconductors
究所
究部門

Chul-Ho Lee

National Institute ofAdvanced Industrial
Science and Technology

雄亮

東北大学

金属材料研究所 IRT project of HERMES

Yusuke Nambu

Tohoku University

Taku J Sato

Tohoku University

Masatomo Yashima

Tokyo Institute ofTechnology

哲虎

Origin of isotropic magnetic peaks induced by Fe-substitutionin LSCO・ 申請装置 T1-3 HERMES113

HERMES（東北大金研：中性子粉末回折装置）
IRT 課題114

新奇量子カゴメ格子系 Yb3Ni11Ge4 の短距離スピ
佐藤
ン相関

卓

東北大学

多元物質科学研 Short-range correlations in the new quantum kagome-latticecompound Yb3Ni11Ge4
究所

115

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

116 Majumdar-Ghosh 系物質の中性子粉末回折

南部

雄亮

東北大学

金属材料研究所 Neutron powder diffraction on a Majumdar-Ghosh system

Yusuke Nambu

Tohoku University

117 希土類−遷移金属複合酸化物の磁気構造

土井

貴弘

北海道大学

大学院理学研究
Magnetic structure of lanthanide-transition metal oxides
院

Yoshihiro Doi

Hokkaido University

安井

幸夫

明治大学

理工学部

Magnetic Structure of S=1/2 linear trimer system
Na2Cu3Ge4O12

Yukio Yasui

Meiji University

山室

修

東京大学

物性研究所

Structure and catalytic activity of PdRu alloy nanoparticles

Osamu Yamamuro

The University of
Tokyo

研吾

中央大学

理工学部応用化 Investigation of the fluorine strage property of oxfluoride
apatatites
学科

Kengo Oka

Chuo University

東北学院大学

工学部

118

量子スピンの三量体構造をもつ Na2Cu3Ge4O12の磁気構造

119 PdRu ナノ粒子の構造と触媒活性

南部

120

酸フッ化物アパタイトにおけるフッ素貯蔵挙動
の解明

岡

121

正方晶 Mn 化合物における過剰 Mn の結晶構造
特性と磁気特性岡田宏成

Crystal structure and ion-diffusion path of layered perovskitetype oxides

Structural and Magnetic properties of excess Mn in Tetragonal
Hironari Okada
Mn CompoundTohoku Gakuin
University

No.

課題名

122

近藤半金属におけるワイルフェルミオンの磁気
状態

氏名

所属

Title

Name

Organization

岩佐

和晃

茨城大学

フロンティア応
用原子科学研究 Magnetic states of Weyl fermion in Kondo semimetals
センター

Kazuaki Iwasa

Ibaraki University

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

新規酸化物イオン伝導体の結晶構造解析とイオ
ン伝導経路の解明

藤井孝太郎

東京工業大学

理学院化学系

Crystal Structure Analysis and Investigation of Ion Diffusion
Path of Novel Oxide-Ion Conductors

Kotaro Fujii

Tokyo Institute ofTechnology

125 T' 構造銅酸化物の超伝導発現と結晶構造の関係

藤田

全基

東北大学

金属材料研究所

Relation between superconducting mechanism and crystal
structure in T’ cuprate oxide

Masaki Fujita

Tohoku University

126 Co ダイマー磁性体における磁気秩序

那波

和宏

東北大学

多元物質科学研
Magnetic order of the Co dimer compound
究所

Kazuhiro Nawa

Tohoku University

127

擬スピン 1/2 パイロクロア反強磁性体
Na3Co(CO3)2Cl の磁気秩序

那波

和宏

東北大学

多元物質科学研 Magnetic order of the pseudo-spin-1/2 pyrochlore
antiferromagnet Na3Co(CO3)2Cl究所

Kazuhiro Nawa

Tohoku University128

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
Ryukyus

青山

拓也

東北大学

理学研究科物理 Magnetic structure analysis of quasi one-dimensional ladderlattice iron compound
学専攻

Takuya Aoyama

Tohoku University

Hiroshi Takatsu

Kyoto University

123 熱電半導体 (Bi,Sb)2Te3 固溶体の酸化過程
124

129 擬一次元梯子格子鉄系化合物の磁気構造解析

ISSP Activity Report 2018130

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

131

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

岡山大学

異分野基礎科学 Magnetic structure analysis of new chiral magnetic compounds
Yusuke Kousaka
MPO4 (M: transition metal)研究所

Okayama University

132

新規カイラル磁性体 CrX (X: Si, Ge) の磁気構造
解析

高阪

勇輔

岡山大学

異分野基礎科学 Magnetic structure analysis in new chiral magnetic compounds
Yusuke Kousaka研究所
CrX (X: Si, Ge)

Okayama University

荻野

拓

産業技術総合研 電子光技術研究
Investigation of magnetic structures of EuFeAs2
究所
部門

辻本

吉廣

物質材料研究機 機能性材料研究 The magnetic ground state of chromium oxyfluoride perovskite
Yoshihiro Tsujimotowith mixed valence states
構
拠点

卓

東北大学

多元物質科学研 Magnetic order in the 2D itinerant breathing kagome
compound Yb3Ru4Al12
究所

Taku J Sato

Tohoku University

佐藤

卓

東北大学

多元物質科学研 Neutron-diffraction study on antiferromagnetic structure in the
Taku J Sato
Ga-Pd-Tb 2/1 quasicrystalline appoximant
究所

Tohoku University

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

Tohoku University

133 EuFeAs2 超伝導体の磁気構造解析
134

混合原子価クロム酸フッ化物ペロブスカイト化
合物の磁気基底状態

135

歪んだ籠目格子遍歴磁性体 Yb3Ru4Al12 の磁気構佐藤造

136 Ga-Pd-Tb 2/1 近似結晶の磁気構造

Structural investigation of pyrochlore oxides Tb2M2O7 (M=Zr,
Hf, Pd, Pt)

Hiraku Ogino

National Institute ofAdvanced Industrial
Science and Technology

National Institute forMaterials Science・ 申請装置 T2-2: FONDER

131

137 FONDER( 中性子 4 軸回折装置 )IRT 課題

Hiroyuki Kimura

132
ISSP Activity Report 2018

No.

課題名

氏名

所属

138

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

Mechanism of ferromagnetism in plastically deformed Pt3Fe
antiferromagnet

Satoru Kobayashi

Iwate University

139

T' 構造 Pr1.40La0.60CuO4+y におけるスピン密度
の空間分布

藤田

全基

東北大学

金属材料研究所

Spatial Spin Density Distribution in the T'-structured
Pr1.40La0.60CuO4+y

Masaki Fujita

Tohoku University

140

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

Commensurate-Incommensurate Magnetic Phase Transition in
Miwako Takahashi
Type-III Anti-ferromagnet Pt-Mn

Tsukuba University

美也

東京大学

物性研究所

IRT project of Accessory

The University of
Tokyo

Title

Name

Organization

・ 申請装置 Accessory
141 アクセサリー IRT 課題

上床

Yoshiya Uwatoko

平成 30 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 2018
播磨分室
No.
1
2
3
4

BL07LSU / Harima Branch BL07LSU
課題名

オペランド顕微光電子分光による全固体リチウ
ムイオン電池の正極材料における Li 拡散・電子
状態分布の観察
単結晶マイクロワイヤー負極を用いたリチウムイオン電池におけるリチウム脱挿入のオペラン
ド光電子分光測定
水系電解液を用いたオペランド軟 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状態の研究
オペランド軟 X 線発光分光によるリチウムイオン電池電極材料の電子状態と酸化還元電位の相
関の解明

氏名

所属

Title

Name

Organization

赤田

圭史

東京大学

物性研究所

Observation of Li diffusion and electronic-structure distribution
in the cathode material of all-solid-state Li- ion battery by
Keishi Akada
operando photoelectron spectromicroscopy

The University of
Tokyo

赤田

圭史

東京大学

物性研究所

Operando photoelectron spectroscopy of lithium intercalation
Keishi Akada
on lithium-ion battery cell with single-particle microwire anode

The University of
Tokyo

朝倉

大輔

( 国 ) 産業技術
総合研究所

朝倉

大輔

( 国 ) 産業技術
総合研究所

Electronic-structure analysis of Li-ion-battery cathode materials
省エネルギー研by operando soft x-ray emission spectroscopy with aqueousDaisuke Asakura
究部門
solution based electrolyte
Electronic-structure analysis of Li-ion-battery cathode materials
省エネルギー研by operando soft x-ray emission spectroscopy with aqueousDaisuke Asakura
究部門
solution based electrolyte
Redox reaction in cathode materials for rechargeable batteries
studied by incident-energy dependent high-energy-resolution
Masashi Okubo
工学系研究科
soft x-ray emission spectroscopy
Clarification of the oxygen redox reaction in cathode materials
for Na-ion batteries by high-energy-resolution soft x-ray
Masashi Okubo
工学系研究科
emission spectroscopy
Time-resolved soft X-ray photoelectron spectroscopy study
大学院理工学研of the charge carrier recombination process in organic
Kenichi Ozawa
究科
photovoltaics

National Institute ofAdvanced Industrial
Science and Technology
National Institute ofAdvanced Industrial
Science and Technology

ISSP Activity Report 20181335

高分解能軟 X 線発光分光の励起エネルギー依存性から見る二次電池正極材料の酸化還元反応

大久保

將史

東京大学

6

高分解能軟 X 線発光分光によるナトリウムイオン電池正極材料の酸素レドックス反応の解明

大久保

將史

東京大学

7

有機太陽電池における分離キャリアの再結合抑制機構の解明：時間分解軟 X 線光電子分光を用いた光励起状態の検証

小澤健一

東京工業大学8

SiC トレンチ MOSFET の断面チャネル領域のナ
尾嶋
ノ光電子分光解析

正治

東京大学

物性研究所

9

斜入射共鳴軟Ｘ線散乱による電子－プロトン相
関有機のヘテロ界面における水素結合状態の研
究

加藤

浩之

大阪大学

大学院理学研究 Study of an interface hydrogen-bond state of the electronproton-correlated organic heterostructure科

10

雰囲気光電子分光による不均一触媒表面におけるメタン活性化のオペランド観測

小板谷

貴典

分子科学研究所

物質分子科学研 Operando observation of methane activation on heterogeneous
Takanori Koitaya
catalysts by ambient-pressure XPS
究領域

Institute for Molecular
Science

11

雰囲気光電子分光によるメタン活性化に対する
金属―酸化物界面協奏効果の解明

小板谷

貴典

分子科学研究所

物質分子科学研 Synergetic effect at metal-oxide interface on methane
activation measured by ambient-pressure XPS
究領域

Takanori Koitaya

Institute for Molecular
Science12

生体親和性ポリマーに含まれる中間水の状態評
価

崔

東京大学

物性研究所

Chemical state analysis of intermediate water bounded bybiocompatible polymers

Yitao Cui

The University of
Tokyo

13

Pd、および Pd を含むナノ粒子の水素吸蔵特性と坂田
粒子形状、試料温度、水素分圧依存性

修身（国）物質・材料研究機構

National Institu

Shape, temperature, pressure dependent hydrogen-storage in
Pd and Pd-based alloy nanoparticles

Osami Sakata

National Institute forMaterials Science

14

X 線光電子分光による半導体・電解液界面におけ杉山るバンドアラインメントの究明

正和

東京大学

工学系研究科Elucidation of Band Alignment at Semiconductor/Electrolyte
Interface by X-ray Photoelectron Spectroscopy

Masakazu Sugiyama

The University of
Tokyo

15

元素選択光電子ホログラフィーによる
BaTiO3Pt(111)/Si 二次元準結晶の局所構造解析

寛

Local structure analysis of BaTiO 3 / Pt (111) / Si two奈良先端科学技 物質創成科学研
dimensional quasi-crystal by elemental selective photoelectron Hiroshi Daimon
術大学院大学
究科
holography

大門藝涛Nano photoelectron spectroscopy of sidewall channel region
for SiC trench MOSFETThe University ofTokyo
The University of
Tokyo
Tokyo Institute ofTechnology

Masaharu Oshima

The University ofTokyo

Hiroyuki Kato

Osaka University

Nara Instituteof Science andTechnology

134
ISSP Activity Report 2018

No.

課題名

氏名

所属

16

時間分解共鳴軟 X 線散乱によるスピン軌道液体
Ba3CuSb2O9 の軌道揺らぎコヒーレントフォノ
ンの可視化

17

雰囲気 X 線光電子分光による Pd 系合金触媒表面
唐
CO2 水素化反応過程の解明

18

軟 X 線分光を用いた無機粒子の液中プラズマ処
理反応場のその場観察

寺嶋

19

p+-WSe2/n-MoS2 ヘテロ接合 TFET デバイス構
造のオペランドポテンシャルイメージング

永村

20

サイト選択・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

21

軟 X 線非弾性散乱、非弾性回折を用いた生体高分子や多糖、電解液における水の役割と水和水の電子状態の研究

原田

慈久

東京大学

物性研究所

22

時間分解軟 X 線吸収分光による Eu(Rh,Ir,Co)2Si2
平田の光誘起価数転移の動的緩和現象の観測

靖透

東京大学

物性研究所

3D nano-ESCA を用いた顕微 X 線分光の新展開
23 （II）先進デバイス工学の援用による埋もれた界 吹留
面の時空間ダイナミクスの観察

博一

東北大学

Novel development of soft x-ray spectromicroscopy using 3D
電気通信研究所 nano-ESCA (II) Observation of spatio-temporal dynamics ofburied interfaces with the aid of advanced device engineering24

波数分解共鳴非弾性軟 X 線散乱による VO2 の金
藤原
属絶縁体転移の発現機構解明

秀紀

大阪府立大学

理学系研究科25

全固体リチウムイオン電池を用いたオペランド
顕微光電子分光による電極材料の電子状態マッ
ピング

細野

英司

( 国 ) 産業技術
総合研究所

26

全固体 Li イオン電池を用いたオペランド顕微光
電子分光による遷移金属の価数変化マップ測定

細野英司( 国 ) 産業技術
総合研究所

27

生体親和性高分子材料の機能発現に関わる水和
水の電子状態観測

村上

大樹

九州大学

28

生体親和性高分子中の中間水の性質解明に向けた軟 X 線吸収・発光分光解析

村上

大樹

29

共鳴非弾性軟 X 線散乱を用いたペロブスカイト
Ni 酸化物の電荷秩序状態観測

山神30

共鳴非弾性軟 X 線散乱を用いた層状ペロブスカ
イト Mn 酸化物の電荷 / 軌道秩序観測

31
32

Title

Name

Organization

東京大学

物性研究所

Visualization of coherent phonons in a spin-orbital liquid
Ba3CuSb2O9 using time-resolved resonant soft x-ray scattering

Kou Takubo

The University ofTokyo

兵庫県立大学

工学研究科

Ambient-pressure XPS studies of CO2 hydrogenation on Pdbased bimetalic alloy catalysts

Jiayi Tang

University of Hyogo

和夫

東京大学

大学院新領域創 In-situ soft X-ray spectroscopy of plasma-induced reaction fieldKazuo Terashimain liquid, under modification of inorganic particles
成科学研究科The University of
Tokyo

直佳

（国）物質・材料研究機構

高エネルギー光 Operando potential imaging of p+-WSe2/n-MoS2 hetero
junctions for TFET device structure
解析グループNational Institute forMaterials Science

田久保

耕

佳芸

好一

名古屋工業大学 物理工学科

Naoka Nagamura

Development of site-selective and time-resolved photoelectron
holography and its application to the structural observation of Kouichi Hayashi
silicene formation
Soft X-ray inelastic scattering and diffraction techniquesapplied for the study on the role of water and hydration in
biopolymers, polysaccharides and electrolytes

Yoshihisa Harada

Observation of dynamic relaxation phenomena related tophoto-induced valence transition in Eu(Rh,Ir,Co)2Si2 by means Yasuyuki Hirata
of time-resolved soft x-ray absorption spectroscopy

Nagoya Institute ofTechnology
The University ofTokyo
The University ofTokyo

Hirokazu Fukidome

Tohoku University

Hidenori Fujiwara

Osaka Prefecture
University

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

Eiji Hosono

National Institute ofAdvanced Industrial
Science and Technology

先導物質化学研 Observation of the electronic structure of hydrated water inbiocompatible polymers.
究所

Daiki Murakami

Kyushu University

九州大学

先導物質化学研 Soft X-ray absorption and emission spectroscopy of theintermediate water in biocompatible polymers.
究所

Daiki Murakami

Kyushu University

光平

東京大学

物性研究所

Charge order of perovskite Ni oxidation probed by resonant
inelastic soft X-ray scattering

Kohei Yamagami

The University of
Tokyo

山神

光平

東京大学

物性研究所

Charge and orbital order of layered perovskite Mn oxidation
probed by resonant inelastic soft X-ray scattering

Kohei Yamagami

The University ofTokyo

時分割コヒーレント軟 X 線回折イメージングによる超高速磁気ダイナミクス研究

山崎裕一（国）物質・材料研究機構

統合型材料開Ultra-fast magnetic dynamics revealed by time-resolved
発・情報基盤部
coherent soft x-ray diffraction imaging
門

Yuichi Yamasaki

National Institute forMaterials Science

時間分解オペランド XPS の開発と光エネルギー
変換過程実時間観測への展開

山本

達

東京大学

物性研究所

Susumu Yamamoto

The University ofTokyo

Revealing the mechanism of the metal-insulator transition inVO2 probed by momentum resolved RIXSElectronic-structure mapping of electrode materials by
省エネルギー研
operando photoelectron spectromicroscopy using an all-solid究部門
state Li-ion-battery
Valence-change mapping of transition metals by operando
省エネルギー研
photoelectron spectromicroscopy using an all-solid-state Li究部門
ion-battery

Development of time-resolved Oprando XPS for the real time
monitoring of light energy conversion processes

No.

課題名

氏名

所属

Title

Name

Organization

33

プラズモン増強サバティエ反応のオペランド軟 X
山本
線分光観測

達

東京大学

物性研究所

34

軟 X 線吸収・発光分光によるルテニウム酸化物
吉田
Ca2RuO4 の電場誘起金属絶縁体転移の観測

鉄平

京都大学

大学院人間・環 Observation of electric-field-induced metal-insulator transition
Teppei Yoshidain Ca2RuO4 by soft x-ray absorption and emission spectroscopy
境学研究科

Kyoto University

35

ルテニウム酸化物 Ca2RuO4 の電場誘起金属絶縁吉田
体転移の空間分布観測

鉄平

京都大学

大学院人間・環 Spatial distribution analysis of electric-field-induced metalinsulator transition in Ca2RuO4 using 3D nano-ESCA
境学研究科

Teppei Yoshida

Kyoto University

36

単原子合金触媒 Pd-Cu(111) におけるフォルメー
ト水素化反応の雰囲気 XPS によるオペランド観 吉信
察

淳

東京大学

大学院新領域創 Operando observation of hydrogenation of formate on a single
Jun Yoshinobu
atom alloy catalyst Pd-Cu(111) using AP-XPS
成科学研究科The University of
Tokyo

37

Ion-water interaction on the molecular level

Yin

Zhong

ETH Zurich

38

Investigation of Ferroelectric Photovoltaic Effectin BiFeO3/(La,Sr)MnO3 Heterostructures by Timeresolved X-ray Magnetic Circular Dichroism

Zhang
Yujun

東京大学

Plasmon-enhanced Sabatier reaction studied by Operando soft
Susumu Yamamoto
X-ray spectroscopies

Ion-water interaction on the molecular level

物性研究所

Yin ZhongInvestigation of Ferroelectric Photovoltaic Effect in BiFeO3/(La,Sr)MnO3 Heterostructures by Time-resolved X-ray Magnetic Zhang Yujun
Circular Dichroism

The University ofTokyo

ETH Zurich
The University ofTokyo

柏キャンパス E 棟 / Laser and Synchrotron Research Laboratory in Kashiwa

ISSP Activity Report 2018

No.

課題名

氏名

所属

1

遷移金属インターカレート 1T-TiSi2 のスピン分
解角度分解光電子分光

伊藤

孝寛

名古屋大学

2

層状 MAX 相化合物 V2AlC のスピン分解角度分
解光電子分光

伊藤

孝寛

名古屋大学

3

低対称性半導体基板上の Bi 擬 1 次元構造におけ大坪
るスピン偏極電子状態

嘉之

大阪大学

4

半導体基板上のスピン分裂擬一次元表面状態におけるフェルミ準位調整

大坪

嘉之

5

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

6

トポロジカル絶縁体の電子状態の解明

7

銀の量子井戸状態の光電子分光

135

Name

Organization

Spin-resolved angle-resolved photoemission study of transition
Takahiro Itometal intercalated 1T-TaSi2

Nagoya University

Spin- and angle-resolved photoemission study of layered MAX
Takahiro Itophase compound V2AlC

Nagoya University

生命機能研究科

Spin-polarized electronic states on quasi-1D Bi fabricated on
low-symmetric semiconductor substrates

Yoshiyuki Ohtsubo

Osaka University

大阪大学

生命機能研究科

Fermi-level tuning of quasi-1D spin-split surface states on
semiconductor substrates

Yoshiyuki Ohtsubo

Osaka University

要

東京理科大学

大学院理工学研 Modification of Topological surface states upon adsorption oforganic semiconductors
究科

Kaname Kanai

Tokyo University of
Science

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

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

擬一次元 Bi ハライドの高次トポロジーに対応す黒田
るヒンジ状態の研究

健太

東京大学

物性研究所

Hinge states of higher-order topology in quasi-1D bismuth
halides

Kenta Kuroda

The University of
Tokyo

9

トポロジカル絶縁体 - 強磁性体界面におけるスピ小林
ン偏極電子状態の観測

正起

東京大学

大学院工学系研 Observation of spin-polarized electronic state at an interface
between topological insulator and ferromagnet
究科

Masaki Kobayashi

The University ofTokyo

シンクロトロン
光科学研究センター
シンクロトロン
光科学研究セン
ター

Title

136
ISSP Activity Report 2018

No.

課題名

氏名

10

室温強磁性半導体 (Ga,Fe)Sb 量子井戸におけるスピン偏極バンド構造の解明

小林

正起

東京大学

Elucidation of spin-polarized band structure in room大学院工学系研
temperature ferromagnetic semiconductor (Ga,Fe)Sb qauntum
究科
well

11

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

12

極性ワイル半金属 MoTe2 におけるスピン偏極し坂野
たトポロジカル表面状態の観測

昌人

東京大学

大学院工学系研 Observation of spin-polarized topological surface state onpolar Weyl semimetal MoTe2
究科

13

原子層タリウム単結晶のスピン偏極電子バンド
測定

坂本

一之

千葉大学

融合科学研究科

Investigation of the spin-polarized electronic band structure of
Kazuyuki Sakamoto
atomic layer thallium single crystal

Chiba University

14

インジウム原子層超伝導体におけるラッシュバ
スピン分裂の直接観察

坂本

一之

千葉大学

融合科学研究科

Direct observation of Rashba efect-induced spin splitting in an
Kazuyuki Sakamoto
indium atomic-layer superconductor

Chiba University

15

Study of topological states in Fe-based
superconductor

Peng

Zhang 東京大学

物性研究所

Study of topological states in Fe-based superconductor

Peng Zhang

The University of
Tokyo

16

グラフェンの光電子分光

矢治

光一郎

東京大学

物性研究所

Photoemission study of transferred graphene on Si(111)

Koichiro Yaji

The University of
Tokyo

17

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

横谷

尚睦

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

Takayoshi Yokoya

Okayama University

18

第二種 Weyl 半金属 WTe2 の角度分解光電子分光
万
による研究

東京大学

大学院理学系研 Angle-resolved photoemission spectroscopy study of type-II
semimetal WTe2
究科

Yuxuan Wan

The University of
Tokyo

宇軒

所属

Title

Direct investigation of the spin-polarized topological surface
state in a quasi-one dimensional material

Name

Organization

Masaki Kobayashi

The University ofTokyo

Takeshi Kondo

The University ofTokyo

Masato Sakano

The University ofTokyo平成 30 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 2018
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 2018137

Atsushi Oshiyama

Institute of Materials
and Systems for
Sustainability

Tatsuki Oda

Kanazawa University

名古屋大学未来材料・システム研 Mechanisms of of Semiconductor Interface Formation and its
Electronic Properties based on Quantum Theory
究所

Atsushi Oshiyama

Institute of Materials
and Systems for
Sustainability

修

東京大学物性研究所

Functional property of electrodes

Osamu Sugino

The University ofTokyoオーダー N 法を用いた MD/DFT 自己無撞着法に石塚よる触媒反応設計良介

大阪大学大学院基礎工学研究科

Seeking of catalytic reaction with the MD/order-N DFT selfconsistent scheme

Ryosuke Ishizuka

Osaka University

6

高機能スピントロニクス材料物質の原子・磁気・小田
電子構造の解析竜樹

金沢大学理工研究域

Analyses on atomic, magnetic, and electronic structures inhigh-performance spintronics materials

Tatsuki Oda

Kanazawa University7

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 RSPACE 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

8

第一原理シミュレーション手法の開発と応用：構常行
造探索から超伝導まで

真司

東京大学大学院理学系研究科

Development and application of first-principles simulation
methods: from structure prediction to superconductivity

Shinji Tsuneyuki

The University of
Tokyo

9

トポロジカル熱電変換物質の第一原理的研究

石井史之

金沢大学ナノマテリアル研究所

First-principles study of topological thermoelectric materials

Fumiyuki Ishii

Kanazawa University

10

自己無撞着 GW を用いた XPS 計算

野口良史

静岡大学工学部

XPS simulation using self-consistent GW method

Yoshifumi Noguchi

Shizuoka University11

非類似性を利用した自己組織化過程解析

重田育照

筑波大学大学院数理物質科学研究 Analyses on self-organization processes using dissimilarity
sampling
科

Yasuteru Shigeta

University of Tsukuba

12

第一原理計算と流体力学の融合による窒化物半
導体 MOVPE 成長のマルチフィジックスシミュ
レーション

白石

賢二

Kenji Shiraishi

Nagoya University

13

レプリカ交換法と第一原理計算を基盤とした構
造・物性予測フレームワークの開発

笠松秀輔

Shusuke Kasamatsu

The University of
Tokyo

14

ナノデバイスに関連する諸特性の理論解析

渡邉聡

東京大学大学院工学系研究科

Theoretical Analyses on Various Properties Concerning
Nanodevices

Satoshi Watanabe

The University of
Tokyo

15

ナノデバイスに関連する諸特性の理論解析

渡邉聡

東京大学大学院工学系研究科

Theoretical Analyses on Various Properties Concerning
Nanodevices

Satoshi Watanabe

The University of
Tokyo

1

量子論による半導体界面形成機構と電子物性の
解明

押山

淳

名古屋大学未来材料・システム研 Mechanisms of Semiconductor Interface Formation and its
Electronic Properties based on Quantum Theory
究所

2

高機能スピントロニクス材料物質の磁気・電子
構造の解析

小田

竜樹

金沢大学理工研究域

3

量子論による半導体界面形成機構と電子物性の
解明

押山

淳

4

電極界面の機能物性杉野

5

Analyses on magnetic and electronic structures in highperformance spintronics materials

Multiphysics Simulation of MOVPE Growth of Nitride
名古屋大学未来材料・システム研
Semiconductor Based on Unification of First Principles
究所
Calculations and Fluid Dynamics
Development of Structure/Property Prediction Framework
Based on Replica Exchange Method Combined with Ab Initio
東京大学物性研究所
Calculations

138

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 201816

第一原理計算でせまる超伝導体における電荷・ス
明石
ピン揺らぎの定量的競合

遼介

東京大学大学院理学系研究科

First-principles quantitative approach to the interplay of
charge and spin fluctuations in superconductors

Ryosuke Akashi

The University of
Tokyo

17

電場下の金属 / 固体界面における金属原子のイオ
ン化・拡散の研究：半導体・有機固体基板への 中山
展開隆史

千葉大学理学部物理学科

First-principles study of ionization and diffusion of metal
atoms at metal/solid interfaces in electric fields: toward
semiconductor and organic substrates

Takashi Nakayama

Chiba University

18

新規二次電池材料に関する第一原理計算

山田淳夫

東京大学工学系研究科

First-principles investigations of battery materials

Atsuo Yamada

The University of
Tokyo

19

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

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 of
Tokyo

20

トポロジカル物質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 Topological Matter

Kunihiko Yamauchi

Osaka University21

スピン変換物質の第一原理的研究

石井史之

金沢大学ナノマテリアル研究所

First-principles study of spin conversion materials

Fumiyuki Ishii

Kanazawa University

22

ルチル型 TiO2(110) 表面上での酸素吸着反応における欠陥濃度依存性

泰岡顕治

慶應義塾大学理工学部機械工学科

The Effect of Defect Density on O2 Absorption Reactions on
Rutile TiO2(110) Surfaces

Kenji Yasuoka

Keio University

23

ギ酸分解触媒及び酸素吸蔵材料の省貴金属化

國貞雄治

北海道大学大学院工学研究院

Reduction of Rare Metals in Formic Acid Decomposition
Catalysts and Oxygen Storage Materials

Yuji Kunisada

Hokkaido University24

強磁性 f-d 金属間化合物の微視的電子状態第一原
理計算と中間スケール磁区構造実験データの統 松本
合解析宗久

東京大学物性研究所

Integration of ab initio data of microscopic electronic structure
Munehisa
and experimental data of mesoscopic domain structure for
Matsumoto
ferromagnetic f-d intermetallics

The University of
Tokyo

25

ナノ構造の励起電子・陽電子・原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, Positron and Atom
Dynamics and Optical Responses of Nanostructures

Kazuyuki Watanabe

Tokyo University of
Science26

超並列電子状態計算とデータ駆動科学の融合による大規模デバイス材料研究星鳥取大学大学院工学研究科

Large-scale device-material research by massively parallel
electronic structure calculation and data-driven science

Takeo Hoshi

Tottori University

27

ナノ構造の励起電子・陽電子・原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, Positron and Atom
Dynamics and Optical Responses of Nanostructures

Kazuyuki Watanabe

Tokyo University of
Science28

電池・触媒界面物性に関する第一原理 " サンプリ
館山ング " 研究佳尚

物質・材料研究機構

DFT sampling studies on interfacial properties of batteries andYoshitaka Tateyama
catalysts

National Institute forMaterials Science29

ファン・デル・ワールス密度汎関数を用いた金
属表面への分子吸着の研究

濱田

幾太郎

大阪大学工学研究科

van der Waals density functional study of molecular adsorption
Ikutaro Hamada
on metal surfaces

Osaka University30

表面 Bi ナノ構造の Rashba 効果

合田

義弘

東京工業大学物質理工学院材料系 Rashba effects in surface-Bi nanostructures

Yoshihiro Gohda

31

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

First-principles study of quantum transport in nanostructures

Nobuhiko Kobayashi University of Tsukuba

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

健夫

Tokyo Institute ofTechnology

Kumamoto University

ISSP Activity Report 2018

139

No.

課題名

氏名

33

酸化物表面の Lewis 酸塩基中和による吸着分子の Brønsted 酸性発現機構の解明

山口周

東京大学大学院工学系研究科

Bronsted Acidity on Oxide Surface Induced by Neutralizationof Lewis Acid Sites by Molecules

Shu Yamaguchi

The University of
Tokyo

34

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

Development of High-performance Polymer ElectretYuji Suzuki

The University of
Tokyo

35

Nd-Fe-B 磁石の副相探索及び界面の大規模第一
原理計算

立津

慶幸

名桜大学

First-principles calculations of a search for subphases andlarge-scale calculations for the grain boundaries of Nd-Fe-B
magnets

Yasutomi Tatetsu

Meio University

36

第一原理計算によるトリチウム透過防止用金属
酸化物中の水素同位体ミクロ挙動に関する研究

毛工学系研究科総合研究機構

First-principles calculation of microscopic behaviors ofhydrogen in metal oxides for tritium permeation barrier

Wei Mao

The University of
Tokyo

37

ギ酸分解触媒及び酸素吸蔵材料の省貴金属化

國貞雄治

北海道大学大学院工学研究院

Reduction of Rare Metals in Formic Acid Decomposition
Catalysts and Oxygen Storage Materials

Yuji Kunisada

Hokkaido University

38

ワイドギャップ半導体におけるミュオン及び陽電子実験に関わる第一原理計算

斎藤峯雄

金沢大学理工研究域数物科学系

First-principles calculation for muon and positron experiments
Mineo Saito
of wide gap semiconductors

Kanazawa University

39

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 - エッチングにより形成され 稲垣る表面粗さの検討 -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 of surface roughness formed byetching-

Osaka University

40

第一原理計算を用いたクラスレート化合物の熱
電特性解析

大西

正人

東京大学機械工学専攻

Analysis of Thermoelectric Properties of Clathrate Compounds
Masato Ohnishiwith Ab Initio Calculations41

新しい構造探索法の開発と新機能性物質の探索

下司雅章

大阪大学ナノサイエンスデザイン Development of new structural search method and search for
new functional materials
教育研究センター

42

第一原理計算によるナノ物質の構造・機能の解
明と予測

武次

徹也

北海道大学大学院理学研究院

Ab initio study on the structure and functions of nanomaterials Tetsuya Taketsugu

Hokkaido University

43

アモルファス磁性体および永久磁石内アモルフ
ァス相界面に対する第一原理計算およびグラフ
解析手法の開発

寺澤麻子

東京工業大学First principles calculations and development of graph analysis
method for magnetic alloys and amorphous grain boundary
Asako Terasawa
phases in permanent magnets

Tokyo Institute ofTechnology

44

電場中での担持金属触媒表面状態の評価

関根泰

早稲田大学先進理工学研究科

Elucidation of the surface of supported metal catalyst in anelectric fieldYasushi Sekine

Waseda University

45

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 University

46

分子動力学計算による生体高分子複合体の自由
エネルギ計算舘野賢

兵庫県立大学大学院生命理学研究 Molecular dynamics free energy calculations of functional
mechanisms of biological macromolecular complex systems
科

Masaru Tateno

University of Hyogo

47

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 Technology

48

トポロジカル解析と系の秩序パラメータ赤木和人

東北大学材料科学高等研究所

Topological Analysis and Order Parameter of the System

Kazuto Akagi

Tohoku University

49

燃料電池電極触媒及び水素透過膜の省貴金属化

坂口紀史

北海道大学大学院工学研究院

Reduction of Rare Metals in Fuel Cell Catalysts and Hydrogen
Permeable Membrane

Norihito Sakaguchi

Hokkaido University

偉

所属

Title

Name

Kouji Inagaki

Masaaki Geshi

Organization

The University ofTokyo
Osaka University

140
ISSP Activity Report 2018

No.

課題名

氏名

所属

50

ワイドギャップ半導体におけるミュオン及び陽電子実験に関わる第一原理計算

斎藤峯雄

金沢大学理工研究域

51

マテリアルズインフォマティクスを用いた新材
料開発

山下

智樹

国立研究開発法人物質・材料研究
Developments of new materials using materials informatics
機構

Tomoki Yamashita

National Institute forMaterials Science52

原子吸着 Si 表面系の原子構造・電子状態

服部賢

奈良先端科学技術大学院大学物質 Atomic structure and electronic states for Si surfaces withadsorbates
創成科学研究科

Ken Hattori

Nara InstituteofScience andTechnology

53

絶縁体非線形光吸収の第一原理計算

篠原康

東京大学工学系研究科

First-principles calculations for nonlinear light absorption of
insulators

Yasushi Shinohara

The University of
Tokyo

54

第一原理計算を用いた環境発電・エネルギー貯
蔵デバイス材料の理論設計籾田浩義

大阪大学産業科学研究所

Theoretical design of energy harvesting and storage devicematerials by first-principles calculations

Hiroyoshi Momida

Osaka University

55

ルチル型 TiO2(110) 表面における温度由来の欠陥安定性に関する研究

泰岡顕治

慶應義塾大学理工学部

Study on the Temperature Induced Stability of Defects on
Rutile TiO2(110) Surfaces

Kenji Yasuoka

Keio University

56

機能性材料界面の原子構造および特性発現機構
の解明

幾原

雄一

東京大学大学院工学系研究科

Atomic structure and properties of functional materials

Yuichi Ikuhara

The University of
Tokyo

57

第四次革新的手法を用いた産業応用酵素および創薬標的タンパク質の理論的研究

常盤広明

立教大学理学部

Theoretical Study of Industrial Enzyme and Drug Target
Protein using the Forth Revolution

Hiroaki Tokiwa

Rikkyo University

58

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

Development of High-performance Polymer ElectretYuji Suzuki

The University of
Tokyo

59

浸透圧調整物質の水中での相互作用に関する第一原理分子動力学計算

大戸達彦

大阪大学大学院基礎工学研究科

Interaction between osmolytes in water revealed by ab initio
molecular dynamics simulation

Tatsuhiko Ohto

Osaka University

60

第一原理熱力学・統計力学手法を用いた不均一
触媒反応課程の研究

森川良忠

大阪大学 大学院工学研究科

First-principles Thermodynamics and Statistical Mechanics
Simulations of Catalytic Reactions at Solid Surfaces

Yoshitada Morikawa

Osaka University

61

ゲルマニウム二次元結晶に関する第一原理計算

洗平

昌晃

名古屋大学未来材料・システム研 First-principles study on two-dimensional crystals ofgermanium
究所

Masaaki Araidai

Nagoya University

62

純水による SiC 単結晶の触媒表面基準エッチン
グのメカニズム解明

ブイ ヴァンフォー

大阪大学大学院工学研究科

Study on removal mechanism in catalyst referred etching of
single crystalline SiC with pure water

Vanpho Bui

Osaka University

63

GaN 中の欠陥に起因した振動モード変調の研究小田将人

和歌山大学システム工学部

Modulation of phonon modes originate from impurities in GaN Masato Oda

64

深海熱水噴出孔における持続的な化学反応過程の第一原理分子動力学シミュレーション

島村孝平

神戸大学大学院システム情報学研 Ab initio molecular dynamics simulation of sustained chemical
Kohei Shimamura
reaction processes in deep-sea hydrothermal vents
究科

65

超分子自己組織化膜 / 水界面の第一原理分子動力
大戸
学シミュレーション

達彦

大阪大学大学院基礎工学研究科

First-principles molecular dynamics simulation of the interface
Tatsuhiko Ohto
between water and a supramolecular self-assembled monolayer

Osaka University

66

Fe/Pd(001)2 層膜の磁気特性に Pd 層の量子井戸
佐藤
状態が与える影響に関する研究

徹哉

慶應義塾大学理工学部

Magnetic properties of Fe/Pd(001) bilayer affected by quantumTetsuya Satowell states in Pd layer

Keio University

Title

Name

First-principles calculation for muon and positron experiments
Mineo Saito
of wide gap semiconductors

Organization
Kanazawa University

Wakayama University
Kobe University

No.

課題名

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018

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67

軽元素含有による超高圧環境下の液体鉄合金の輸送特性変化 : 第一原理分子動力学シミュレーシ 大村ョン

訓史

広島工業大学工学部

Effects of light elements on transport properties of liquid Fe
alloy under ultrahigh pressure condition : ab initio moleculardynamics simulations

Satoshi Ohmura

Hiroshima Institute ofTechnology

68

ナノグラフェンに現れる動的効果の理論解析

草部浩一

大阪大学大学院基礎工学研究科

Theoretical analysis of dynamical effects of nanographene

Koichi Kusakabe

Osaka University69

高効率な原子層水分解光触媒の理論的探索 II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 II

Tatsuo Suzuki

Tokyo Metropolitan
College of Industrial
Technology

70

エキシトニック絶縁体 Ta2NiSe5 に対する第一
原理低エネルギー有効模型導出中村

和磨

九州工業大学

Ab initio derivation of effective low-energy model for excitonic
Kazuma Nakamura
insulator Ta2NiSe5

Kyushu Institute ofTechnology

71

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

Ab initio molecular dynamics simulation of doped-graphene/water interfaces

Tatsuhiko Ohto

Osaka University

72

第一原理による機能性材料の原子構造および電子状態の解明幾原雄一

東京大学大学院工学系研究科

Ab initio study on atomic and electronic structure of functional
Yuichi Ikuharamaterials

The University of
Tokyo

73

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 RSPACE 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

University of Tsukuba

74

時間に依存した電子輸送計算手法の開発と原子層状物質への応用

江上喜幸

北海道大学大学院工学研究院

Development of a time-dependent electron-transport simulator
Yoshiyuki Egami
and its application to atomic-layered materials

Hokkaido University

75

純水による SiC 単結晶の触媒表面基準エッチン
グのメカニズム解明

ブイ ヴァンフォー

大阪大学大学院工学研究科

Study on removal mechanism in catalyst referred etching of
single crystalline SiC with pure water

Vanpho Bui

Osaka University

76

第一原理計算によるモデルリアル触媒上の表面
反応の探求

水上

渉

九州大学総合理工学研究院

Exploration of surface reactions on model real catalyst

Wataru Mizukami

Kyushu University

77

第一原理計算によるグラフェンの電子特性の解
明

藤本

義隆

東京工業大学大学院理工学研究科

First-principles study of electronic properties of graphene
layersYoshitaka Fujimoto

Tokyo Institute ofTechnology

78

第一原理計算による有限温度下での有機半導体のバンド計算柳澤将

琉球大学理学部

First-principles band structure calculation of organic crystals
at finite-temperature

Susumu Yanagisawa

University of the
Ryukyus79

van der Waals 密度汎関数法による有機 - 金属界
濱本
面電子状態の理論的解明

雄治

大阪大学 大学院工学研究科

van der Waals density functional study of organic-metalinterfaces

Yuji Hamamoto

Osaka University

80

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

Development of ab initio many-body perturbation calculation
software RESPACK

Kazuma Nakamura

Kyushu Institute ofTechnology

81

時間に依存した電子輸送計算手法の開発と原子層状物質への応用

江上喜幸

北海道大学大学院工学研究院

Development of a time-dependent electron-transport simulator
Yoshiyuki Egami
and its application to atomic-layered materials

Hokkaido University82

スピン依存ファン・デル・ワールス密度汎関数法による磁性分子複合体・結晶・界面系の構造解析と電子相関効果の調査

小幡正雄

金沢大学理工研究域

Analysis on atomic structure in magnetic molecular complex, crystal
and interface using spin dependent van der Waals density functional
and investigation of electron correlation effectMasao Obata

Kanazawa University83

磁性分子複合体・結晶・界面系の原子・磁気構造の解析と電子相関効果の調査

小幡正雄

金沢大学理工研究域

Analysis on atomic and magnetic structure in magnetic
molecular complex, crystal and interface and investigation ofelectron correlation effectMasao Obata

Kanazawa University

Tomoya Ono

142
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No.

課題名

氏名

所属

84

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

島根大学大学院自然科学研究科

Study on physical properties of structural elementary
excitations of semiconductor surfaces and interfaces

Hiroyuki Kageshima

Shimane University

85

燃料電池活性サイトおよび光触媒の密度汎関数法による第一原理計算

西館

数芽

岩手大学理工学部

Density functional calculations of the catalytic site of fuel celland photocatalyst

Kazume Nishidate

IWATE University

86

第一原理メタヒューリスティクス法によるナノ炭素機能設計鶴田

健二

岡山大学大学院自然科学研究科

Ab-initio Metaheuristics for Functional Design of Nanocarbon

Kenji Tsuruta

Okayama University87

遷移金属ジカルコゲナイドにおけるスピン - バレ ハシュミ
ー分極と異常量子ホール伝導ルカム

筑波大学計算科学研究センター

Spin-valley polarization & quantum anomalous Hall
conductivity in Transition metal dichalcogenides

Arqum Hashmi

University of Tsukuba

88

第一原理計算による高温水中の多価アルコールの反応過程の研究

佐々木Takehiko Sasaki

The University of
Tokyo

89

Sb 系テラヘルツトランジスタのための歪バンド
構造設計

藤代

博記

東京理科大学

Strained Band-Structure Engineering for Antimonide-BasedTerahertz Transistors

Hiroki Fujishiro

Tokyo University of
Science90

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 University91

量子井戸状態を用いたバンドエンジニアリングによる表面・界面スピン物性の開拓と制御

櫻木俊輔

東京大学物性研究所

Development and control of surface and interface spin texture
Shunsuke Sakuragiby band engineering using quantum-well state

The University of
Tokyo

92

第一原理分子動力学計算による有機分子膜の金属基板上での構造の探索柳澤将

琉球大学理学部

Search for adsorption geometry of an organic molecular layer
Susumu Yanagisawa
on a metal surface with the first-principles molecular dynamics

University of the
Ryukyus93

プロトン伝導性固体電解質のイオン電導機構解
析

大友

順一郎

東京大学大学院新領域創成科学研 Analysis of ion conduction in materials of proton-conducting
solid electrolyte
究科94

希土類磁石材料混晶の安定性と磁気特性

赤井久純

東京大学物性研究所

Stability and magnetic properties of rare earth mixed crystal
magnet materials

95

高精度な第一原理手法に基づくモデルパラメー
タの決定方法の研究榊原寛史

鳥取大学大学院工学研究科

Development of the determination technique of model
Hirofumi Sakakibara Tottori University
parameters based on the accurate ab-initio quantum simulation

96

凝集誘起発光についての理論的研究

山本典史

千葉工業大学

Theoretical Study on the Aggregation-Induced Emission

Norifumi Yamamoto

Chiba Institute ofTechnology

97

Yb2O3 完全結晶の電子構造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 in Yb2O3 crystals

Takayuki Makino

University of Fukui

98

d0 強磁性体および固体表面における陽電子状態の第一原理計算萩原聡

国立研究開発法人量子科学技術研 First-principles study on positron states in d0 ferromagnetics
and at solid surfaces
究開発機構

Satoshi Hagiwara

99

第一原理分子動力学計算を用いたセミクラスレートハイドレートの振動スペクトル計算

平塚将起

工学院大学機械工学科

Ab initio molecular dynamics study on the vibrational spectraof semi-clathrate hydrates

Masaki Hiratsuka

Kogakuin University

数理モデルを用いたアモルファス磁性体および100 永久磁石内アモルファス相界面の第一原理計算
および解析

寺澤

麻子

東京工業大学First principles calculations and mathematical analyses ofamorphous magnetic alloys and amorphous grain boundary
phases in permanent magnets

Asako Terasawa

Tokyo Institute ofTechnology

ア

岳彦

Title

東京大学大学院新領域創成科学研 Reaction processes of polyalcohols in high temperature waterby First Principles Calculations
究科

Name

Organization

Junichiro Otomo

The University ofTokyo

Hisazumi Akai

The University ofTokyo

The National Institutes for
Quantum and Radiological
Science and Technology

ISSP Activity Report 2018

No.

課題名

101

BCN 系および MX2 系新規二次元物質およびナノチューブの生成機構と電子状態に関する研究島田敏宏

北海道大学大学院工学研究院

Formation mechanism and electronic structures of novel two
Toshihiro Shimada
dimensional materials and nanotubes - BCN and MX2 systems

Hokkaido University102

四重極型配置の局在スピン系による電気磁気効果の理論的解明豊田雅之

東京工業大学理学院物理学系

Theoretical Study on Magnetoelectric Effects of Localized Spin
Masayuki Toyoda
Systems in Quadrupole AlignemntTokyo Institute ofTechnology

103

電子で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-structures for electronic devices Hannes Raebiger

Yokohama National
University

104

ケイ酸塩物質における圧力誘起構造変化の分子
動力学解析

三澤

賢明

九州産業大学理工学部

Molecular dynamics study on pressure-induced transformation
Masaaki Misawa
of silicates

Kyushu Sangyo
University

105

触媒インフォマティクスに向けた酸化物の表面
物性計算

日沼

洋陽

千葉大学先進科学センター

Calculation of oxide surface properties for catalyst informatics Yoyo Hinuma

Chiba University

106

ケージド化合物の水溶液中における電子状態の
解明

樋山

みやび

群馬大学

Elucidation of electronic states for caged compounds inaqueous solution

Miyabi Hiyama

Gunma University

107

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

108

電界下におけるナノスケール炭素物質の物性解
明

岡田

晋

筑波大学大学院数理物質科学研究 Physical properties of nanoscale carbon materials under anexternal electric field
科

Susumu Okada

University of Tsukuba

109

第一原理計算を用いた TABA 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 TBAB semiclathrate hydrates

Masaki Hiratsuka

Kogakuin University110

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
Ryukyus111

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

First-principles Study of Defects of Magnesium Alloys

Matsunaka Daisuke

Shinshu University

112 第一原理的アプローチによる電子状態と超伝導

池田浩章

立命館大学理工学部

Electronic structure and superconductivity based on a firstprinciples approach

Hiroaki Ikeda

Ritsumeikan
University

113 硫化鉛ナノ構造の化学ドープ効果

首藤健一

横浜国立大学・工学部

Chemical doping of nano-structured PbS

Ken-Ichi Shudo

Yokohama National
University

北海道大学 触媒科学研究所

Calculation of catalyst electronic structures for catalyst
informatics

Takashi Toyao

Hokkaido university

114

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115 第一原理的アプローチの発展と超伝導の解析

氏名

鳥屋尾

隆

所属

Title

Name

Organization

143

池田

浩章

立命館大学理工学部

Development of the first-principles approach and analysis ofsuperconductivity

Hiroaki Ikeda

Ritsumeikan
University

Study on optical transition and density of states in Yb2O3

Takayuki Makino

University of Fukui

Junichiro Otomo

The University of
Tokyo

116

Yb2O3 完全結晶の光学遷移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

117

プロトン伝導体を用いた触媒表面反応の理論解
析

大友

順一郎

東京大学大学院新領域創成科学研 Theoretical analysis of catalytic surface reaction with proton
conductors
究科

144
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No.

課題名

118

ナノ粒子の表面緩和および溶媒効果に関する研
究

氏名
横

哲

所属

Title

Name

Organization

東北大学材料科学高等研究所

Structural study on surface reconstruction and solvent effects
of nanoparticles

Akira Yoko

Tohoku University

第一原理計算による Fe 系形状記憶合金および
119 Mg 合金における長周期積層欠陥構造の形成メカ 圓谷
ニズムの解明貴夫

熊本大学大学院先導機構

First-principles study on the formation mechanism of longperiod stacking ordered structure in Fe based shape memory
alloys and Mg alloys

Takao Tsumuraya

Kumamoto University

120 新たなナノスケール表面界面の電子物性の研究小林功佳

お茶の水女子大学理学部

Study on electronic properties in new nanoscale surfaces andinterfaces

Katsuyoshi
Kobayashi

Ochanomizu
University

121 希土類磁石材料混晶の安定性と磁気特性

赤井久純

東京大学物性研究所

Stability and magnetic properties of rare earth mixed crystal
magnet materials

Hisazumi Akai

The University ofTokyo

122 原子層のコヒーレントフォノン分光

ヌグラハ アフマド リドワン 東北大学理学研究科
トレスナ

Coherent phonon spectroscopy of atomic layer materials

Ahmad Ridwan
Tresna Nugraha

Tohoku University

東京大学

First-principles calculations for ferroelectric domain structureof layer-structured perovskites

Yuuki Kitanaka

The University ofTokyo

東北大学材料科学高等研究所

Structural study for nanoparticle/nanocluster using firstprinciples calculation

Akira Yoko

Tohoku University
National Institute ofTechnology, Akashi
College123

層状ペロブスカイトにおける強誘電ドメイン構
造の第一原理計算

北中124

第一原理計算によるナノ粒子・ナノクラスターの構造に関する研究横125

金属・合金表面上で進行する酸化・還元的過程の原子レベル反応シミュレーション

笠井秀明

国立明石工業高等専門学校

Atomic-scale Simulation for Redox Processes on Metal/Alloy
Surfaces

Hideaki Kasai

126

Sternheimer-GW による層状物質のバンドギャ
ップ推定

太田

優一

東京都立産業技術研究センター

Estimation of band gap for layered materials by SternheimerGW

Yuichi Ota

127

長波長の光を吸収する光合成色素設計のための励起状態データベースの作成

小松勇Constructing the database of exited states for desigining
自然科学研究機構アストロバイオ
photosynthetic pigments to absorb the longer wavelength
ロジーセンターradiation128

半導体デバイス中のキャリアダイナミックスとそのデバイス特性に関する研究

村口正和

北海道科学大学

Study on carrier dynamics in semiconductor devices and their
Hokkaido University
Masakazu Muraguchi
device characteristics
of Science秋山

了太

東京大学理学系研究科

Band calculations of surface superstructures and thin films

Ryota Akiyama

The University ofTokyo

金属 Cr のスピン密度波状態に対する格子歪み効
小田
果の解析

洋平

福島工業高等専門学校

Analysis of lattice strain effect on spin-density wave state inmetallic chromium

Yohei Kota

Fukushima College中西寛

明石工業高等専門学校

Rational Design of Catalysts for Methane Activation

Hiroshi Nakanishi

National Institute ofTechnology, Akashi
College

三澤貴宏

東京大学物性研究所

Superconductivity and quantum spin liquid in multi-orbital
systems with inverted Hund's rule coupling

Takahiro Misawa

The University of
Tokyo

山地

洋平

東京大学大学院工学系研究科

Numerical studies on fractional excitations in strongly
correlated electron systems

Youhei Yamaji

The University ofTokyo

129 表面超構造および薄膜のバンド計算
130

131 メタン活性触媒の理論デザイン佑樹
哲

Yu Komatsu

Tokyo Metropolitan
Industrial Technology
Research InstituteNational Institutesof Natural Sciences
AstroBiology Center

2. 強相関 / Strongly Correlated Quantum Systems
132

負のフント結合をもつ多軌道系における超伝導と量子スピン液体

133 強相関電子系における分数励起の数値的研究

No.

課題名

テンソルネットワーク変分モンテカルロ法を用
134 いた銅酸化物高温超伝導体の有効ハミルトニア
ンの高精度解析135

スピン軌道結合物質が示す新規量子現象の数値的研究

136 強相関系の外場下応答とトポロジカル現象

氏名
今田
求

正俊
幸年

所属

Title

Name

Organization

東京大学工学系研究科

Highly accurate analysis of an effective Hamiltonian for highTc cuprates by the many-variable variational Monte Carlo
method combined with tensor network

Masatoshi Imada

The University ofTokyo

東京大学大学院工学系研究科

Numerical study on novel quantum phenomena in spin-orbit
coupled materials

Yukitoshi Motome

The University of
Tokyo

川上

則雄

京都大学大学院理学研究科

Study of response to external fields and topological phenomena
Norio Kawakami
in strongly correlated quantum systems

Kyoto University

和彦

大阪大学

First principles and model study of electron correlation andsuperconductivity in multiband systems

Kazuhiko Kuroki

Osaka University

東京大学大学院工学系研究科

Numerical study on quantum magnetism in spin-orbit coupledmaterials

Yukitoshi Motome

The University of
Tokyo

ISSP Activity Report 2018137

多バンド系における第一原理計算とモデル計算
による電子相関と超伝導に関する研究

黒木

138

スピン軌道結合物質が示す量子磁性の数値的研
究

求

139

強相関系の磁性 , トポロジカル相形成と外場下応
川上
答

則雄

京都大学大学院理学研究科

Study of magnetism, topological phase formation, and response
Norio Kawakami
to external fields in strongly correlated quantum systems

Kyoto University140

二層型強相関電子系における非従来型超伝導に関する数値研究

黒木

和彦

大阪大学

Numerical study on unconventional superconductivity inbilayer strongly correlated systems

Kazuhiko Kuroki

Osaka University

141

二成分冷却フェルミ原子気体における Tan のコ
ンタクトの高精度数値解析大越孝洋

東京大学大学院工学系研究科

Highly accurate numerical analysis of Tan's contact of twocomponent cold Fermi gases

Takahiro Ohgoe

The University of
Tokyo

142

近藤格子模型において発現するスキルミオン結晶に対する磁気異方性の効果

速水賢北海道大学理学部

Effect of magnetic anisotropy on skyrmion crystal in the Kondo
Satoru Hayami
lattice model

Hokkaido University

多軌道 TRILEX の実装と応用 ー弱相関側からの143 アプローチと強相関側からのアプローチをつな
ぐ新手法ー

野村

悠祐

東京大学大学院物理工学専攻

Implementation and application of multi-orbital TRILEX -a new
Yusuke Nomura
method to bridge weak-coupling and strong coupling methods-

The University ofToyko

144 希土類系のマルチチャンネル近藤効果

堀田貴嗣

首都大学東京理学研究科

Multi-channel Kondo Effect in Rare-Earth Systems

Takashi Hotta

Tokyo Metropolitan
University

幸年

145

145

強相関電子系において現れる超伝導と軌道秩序
との競合

古賀

昌久

東京工業大学

Competition between superconductivity and orbital orderemerging in strongly correlated electron systems

Akihisa Koga

Tokyo Institute ofTechnology

146

第一原理計算と動的平均場理論による多バンド
系の超伝導

大野

義章

新潟大学

First-principles calculation and dynamical mean-field theory
for superconductivity in multi-band systems

Yoshiaki Ono

Niigata University

147

強相関電子系のフィリング制御による磁性相の
安定性

古賀

昌久

東京工業大学

Stability of magnetic phases in strongly correlated electron
systems with various electron filling

Akihisa Koga

Tokyo Institute ofTechnology

吉田恒也

筑波大学数理物質系

Anomalous phenomena induced for correlated topologicalsystems

Tsuneya Yoshida

University of Tsukuba

東京大学大学院工学系研究科

Dynamics of Majorana particles in Kitaev spin liquids in amagnetic field

Yukitoshi Motome

The University ofTokyo

千葉大学理学研究科

Superconductivity and magnetic properties of the Hubbard
model

Atsushi Yamada

Chiba University

148 強相関トポロジカル系が創発する異常物性149

キタエフスピン液体におけるマヨラナ粒子の磁場中ダイナミクス

求150

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

幸年
篤志

146

No.

課題名

氏名

所属

吉田

恒也

筑波大学数理物質系

Non-Hermitian properties induced by strong correlations

星野

晋太郎

埼玉大学

Numerical approach to unconventional electronic orderings in
Shintaro Hoshinostrongly correlated systems

Saitama University

品岡寛

埼玉大学理学部物理学科

Dynamical mean-field calculations of strongly correlatedtransition metal compounds

Hiroshi Shinaoka

Saitama University

横磁場イジングモデルにおけるランダムネスの
効果

堀田

知佐

東京大学総合文化研究科

Study on the bond random transverse Ising model

Chisa Hotta

The University ofTokyo

155 機械学習と多変数変分波動関数を用いた相分類

本山裕一

東京大学物性研究所

Drawing phase diagram from many-variable variational wave
functions with machine learning

Yuichi Motoyama

The University ofTokyo

156 相関磁性体におけるオプトスピントロ二クス

石原純夫

東北大学大学院理学研究科

Opto-spintronics in correlated magnets

Sumio Ishihara

Tohoku University

157 多体分極と量子ダイナミクスの数値的研究

押川正毅

東京大学物性研究所

Numerical study of many-body polarization and quantum
dynamics

Masaki Oshikawa

The University of
Tokyo

純夫

東北大学大学院理学研究科

Complexed quantum dynamics in strongly interacting systems

Sumio Ishihara

Tohoku University

151 強相関効果が創発する非エルミート物性

ISSP Activity Report 2018152

強相関系における非従来型電子秩序の数値的研
究

153 強相関遷移金属化合物の動的平均場近似計算
154

Title

Name
Tsuneya Yoshida

Organization
University of Tsukuba

158

相互作用の強い系における複合量子ダイナミク
ス

石原

159

Numerical study of d-wave superconductors
in equilibrium

シャラレ サイ
東京大学物性研究所
ヤッド

Numerical study of d-wave superconductors in equilibrium

Sharareh Sayyad

The University of
Tokyo

160

ダイマー内電荷自由度がもたらす分子性導体の
新奇現象

渡部

洋

早稲田大学高等研究所

Novel phenomena induced by intradimer charge degree of
freedom in molecular conductors

Hiroshi Watanabe

Waseda Institute forAdvanced Study161

最適化量子変分モンテカルロ法による強相関電
子系の研究

柳沢

孝

産業技術総合研究所

Optimization variational Monte Carlo study of strongly
correlated electron systems

Takashi Yanagisawa

National Institute ofAdvanced Industrial
Science andTechnology

162

最適化モンテカルロ法および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

Study of strongly correlated electron systems based on
optimization Monte Carlo method and first-principles
calculations

Takashi Yanagisawa

National Institute ofAdvanced Industrial
Science andTechnology

野田数人

独立行政法人 国立高等専門学校
機構 香川高等専門学校

Kondo effects on a system with divergent density of states

Kazuto Noda

Kagawa Collage

有機ディラック電子系α -(BEDT-TTF)2I3 および小林
α -(BETS)2I3 の電子相関効果

晃人

名古屋大学大学院理学研究科

Electron Correlation Effect in Organic Dirac Electron Systems
α -(BEDT-TTF)2I3 and α -(BETS)2I3

Akito Kobayashi

Nagoya University

163 発散する状態密度をもつ系における近藤効果
164

3. 巨視系の協同現象 / Cooperative Phenomena in Complex, Macroscopic Systems
機械学習ソルバーを用いたフラストレーションのある量子スピン系の研究

今田正俊

東京大学工学系研究科

Study on frustrated quantum spin systems using machinelearning solvers

Masatoshi Imada

The University ofTokyo

166 テンソルネットワーク法による非磁性相の探求

川島直輝

東京大学物性研究所

Tensornetwork Method and Its Application to Non-Magnetic
StatesNaoki Kawashima

The University of
Tokyo

165

No.

課題名

氏名

所属

Title

Name

Organization

167 テンソルネットワーク法による非磁性相の探求

川島直輝

東京大学物性研究所

Tensornetwork Method and Its Application to Non-Magnetic
StatesNaoki Kawashima

The University ofTokyo

168 高分子流体の非平衡ダイナミックスの解析

村島隆浩

東北大学大学院理学研究科

Numerical analysis of non-equilibrium dynamics of polymericliquidTakahiro Murashima Tohoku University169

カルマン渦キャビテーションの分子動力学シミュレーション浅野優太

東京大学物性研究所

Molecular Dynamics Simulation of a Karman-Vortex Cavitation Yuta Asano

The University of
Tokyo

170

低エネルギーフェルミオン励起に基づく銅酸化物の擬ギャップ・超伝導機構の解明

今田正俊

東京大学工学系研究科

Mechanism of pseudogap and superconductivity with lowenergy fermionic excitations in high-Tc cuprates

Masatoshi Imada

The University of
Tokyo

川村

光

大阪大学理学研究科

Novel order in frustrated magnets

Hikaru Kawamura

Osaka University

渉名古屋大学大学院工学研究科

Molecular basis analysis of Soft Materials using All-Atom andCoarse-Grained Molecular Dynamics Simulations

Wataru Shinoda

Nagoya University

171 フラストレート磁性体における新奇秩序
172

全原子・粗視化分子動力学シミュレーションによるソフトマターの分子論的解析

篠田

173

Nonequilibrium investigation of hightemperature superconductors

シャラレ サイ
東京大学物性研究所
ヤッド

Nonequilibrium investigation of high temperature
superconductors

Sharareh Sayyad

The University of
Tokyo

野口

東京大学物性研究所

Structure formation of biomembranes

Hiroshi Noguchi

The University ofTokyo

学習院大学理学部

Gauge charge picture of spin liquids: Structure formation andmagnetic correlation

Masafumi Udagawa

Gakushuin University

174 生体膜の構造形成

博司

ISSP Activity Report 2018175

保存電荷描像に基づく古典・量子スピン液体の構造形成と磁気相関

宇田川

176

再生材料の機械・熱物性解明に向けた分子シミュレーション

塩見淳一郎

東京大学工学系研究科

Understanding Mechanical and Thermal Properties of
Sustainable Materials through Molecular Simulations

Junichiro Shiomi

The University ofTokyo

177 量子状態の動的外場による制御

宮下精二

東京大学理学系研究科

Manipulation of quantum state by external fields

Seiji Miyashita

The University ofTokyo

178 ハイゼンベルグ模型の励起ダイナミクスの研究

正木晶子

理化学研究所

Study of excitation dynamics of Heisenberg models

Akiko Masaki-Kato

RIKEN

分子動力学シミュレーションによるアミロイド
179 ベータペプチド全長のオリゴマー形成過程の研
究

奥村

久士

分子科学研究所計算科学研究セン Oligomerization process of full-length amyloid-beta peptides
studied by molecular dynamics simulations
ター

Hisashi Okumura

Institute for Molecular
Science180

ランダムなトポロジカル，非トロポロジカル系のスケーリング理論

大槻東巳

上智大学理工学部

Scaling theories of random topological and non topologicalsystems

Tomi Ohtsuki

Sophia University

181

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

坂井

徹

兵庫県立大学大学院物質理学研究 Numerical Study on Quantum Phase Transitions of the Spin
Tubes
科

Toru Sakai

University of Hyogo

東京大学大学院理学系研究科

Tsuyoshi Okubo

The University ofTokyo

182 スピンチューブの量子相転移の数値的研究

147

183

ハニカム格子キタエフ物質における新規秩序の
探索

大久保

将文

毅

Novel phases in honeycomb lattice Kitaev materials

148

No.

課題名

184

量子多体系におけるトポロジカルな秩序と量子ダイナミクス

氏名

所属

Title

Name

Organization

ISSP Activity Report 2018藤堂眞治

東京大学大学院理学系研究科

Topological Order and Quantum Dynamics in Quantum ManySynge Todo
body Systems

The University ofTokyo

185 生体膜の構造形成野口博司

東京大学物性研究所

Structure formation of biomembranes

The University ofTokyo

微視的第一原理電子状態データと巨視的実験観
186 測データ統合のための粗視化グリーン関数とReverse Monte Carlo による階層間架橋

松本宗久

東京大学物性研究所

Bridging space-time scales via coarse grained Green's function
Munehisa
and reverse Monte Carlo between microscopic electronic
Matsumotostructure and macroscopic observation

The University ofTokyo

電子格子相互作用のあるハミルトニアンに対する機械学習ソルバーの開発

野村悠祐

東京大学大学院物理工学専攻

Development of machine-learning solvers for Hamiltonians
with electron-phonon interactions

Yusuke Nomura

The University of
Toyko

ファインマン・ダイアグラム展開に基づく量子
188 モンテカルロ法の開発と冷却フェルミ原子系の
研究

大越

孝洋

東京大学大学院工学系研究科

Development of the diagrammatic Monte Carlo method and its
Takahiro Ohgoe
application to cold Fermi gases

The University of
Tokyo

189

動的密度行列繰り込み群法によるフラストレー
ト量子スピン系のスピンダイナミクスの研究遠山貴己

東京理科大学理学部

Dynamical DMRG study of spin dynamics in frustrated
quantum spin systems

Takami Tohyama

Tokyo University of
Science190

蜂の巣格子磁性体 RuCl3 の有効模型に対するラ
マンスペクトル鈴木隆史

兵庫県立大学大学院工学研究科

Ramman spectra in the effective models for honeycomb-lattice
Takafumi Suzuki
magnet RuCl3

University of Hyogo

191

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 of
Tokyo

192

産業・医療応用のためのタンパク質の理論物性解析と分子設計新井宗仁

東京大学大学院総合文化研究科

Theoretical analysis and design of proteins for industrial andpharmaceutical applications

Munehito Arai

The University of
Tokyo

原田

健自

京都大学大学院情報学研究科

Numerical study of phase transition in non-equilibrium systems Kenji Harada

Kyoto University

Study on topological phase transitions by dynamical scaling
analysisYukiyasu Ozeki

The University
of ElectroCommunications

Yasuhiro Hatsugai

University of Tsukuba

187

193 非平衡系における相転移の数値的研究

Hiroshi Noguchi

194

動的スケーリング解析によるトポロジカル相転
移の研究

尾関

之康

電気通信大学情報理工学研究科

195

数値的手法によるトポロジカル相とバルク・エッジ対応の研究初貝安弘

筑波大学大学院数理物質科学研究 Numerical studies of topological phases and bulk-edgecorrespondence
科

196

蜂の巣格子キタエフハイゼンベルク模型の磁場
中動的性質

鈴木

隆史

兵庫県立大学大学院工学研究科

Dynamical properties of honeycomb-lattice Kitaev-Heisenberg
models in magnetic fields

Takafumi Suzuki

University of Hyogo

197

キャビテーションの分子動力学シミュレーショ
ン

浅野

優太

東京大学物性研究所

A Molecular Dynamics Study of the Cavitation

Yuta Asano

The University of
Tokyo

198

大規模粗視化分子動力学法による結晶性高分子の凝集プロセスと機械的特性

樋口祐次

東京大学物性研究所

Assembly process and mechanical properties of crystalline
polymers by large-scale coarse-grained molecular dynamics
simulation

Yuji Higuchi

The University of
Tokyo

川村

光

大阪大学理学研究科

Novel order in frustrated magnets

Hikaru Kawamura

Osaka University

萩田克美

防衛大学校応用科学群

Coarse grained MD simulation for fracture and reinforcementof polymer materials

Katsumi Hagita

National Defense
Academy199 フラストレート磁性体における新奇秩序
200

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

No.

課題名

氏名

所属

浩樹

産業技術総合研究所

Analysis of Formation Mechanism of Calcium Phosphate
Crystal by Large-Scale Molecular Dynamics Simulation
Combined with Metadynamics Method

Hiroki Nada

National Institute forAdvanced Industrial
Science and Technology

Harald Jeschke

Okayama University

Title

Name

Organization

メタダイナミクス法を組み合わせた大規模分子
201 動力学シミュレーションによるリン酸カルシウ
ム結晶形成機構解析

灘

202 鉄カルコゲナイド超伝導体の圧力効果

Jeschke
Harald

岡山大学異分野基礎科学研究所

Effects of pressure in iron chalcogenide superconductors

檜原東京大学理学系研究科

Construction of coarse-graining spin model and analysis of theTaichi Hinokihara
coercivity

The University ofTokyo

学習院大学理学部

Dynamics of fractional excitations in quantum spin liquid

Masafumi Udagawa

Gakushuin University

Toru Sakai

University of Hyogo203

粗視化スピン模型の構築と温度揺らぎのある保
磁力解析

204 量子スピン液体の分数励起ダイナミクス

太一

宇田川

205

スピン・フラストレーション系における量子ス
ピン液体の数値対角化による研究

坂井

206

拡張準古典方程式による渦糸フローホール効果の微視的計算北207

動的スケーリング解析によるトポロジカル相転移の研究 II尾関

208 カイラル磁性の統計力学的研究

将文
徹

兵庫県立大学大学院物質理学研究 Numerical Diagonalization Study on the Quantum Spin Liquid
in Frustrated Spin Systems
科
北海道大学理学部

Microscopic calculation of the flux-flow Hall effect baed on the
Takafumi Kita
augmented quasiclassical equations

Hokkaido University

之康

電気通信大学情報理工学研究科

Study on topological phase transitions by dynamical scaling
analysis II

Yukiyasu Ozeki

The University
of ElectroCommunications

福島孝治

東京大学大学院総合文化研究科

Statistical-mechanical study for chiral magnets

Koji Hukushima

The University of
Tokyo

孝文

ISSP Activity Report 2018

149

209

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210

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 IV

橋本

保

産業技術総合研究所

Molecular dynamics simulation of ferroelectrics using a shellmodel IV

Tamotsu Hashimoto

National Institute ofAdvanced Industrial
Science and Technology

211 データ駆動科学の物質科学への応用

福島孝治

東京大学大学院総合文化研究科

Data-driven science for material science

Koji Hukushima

The University ofTokyo

212 量子スピン系の半古典ダイナミクスの研究

森

東京大学理学部物理学科

Semiclassical dynamics of quantum spin systems

Takashi Mori

The University ofTokyo

213 拡張アンサブル法による複雑系の研究

岡本祐幸

名古屋大学大学院理学研究科

Study on complex systems by generalized-ensemble algorithms Yuko Okamoto

Nagoya University

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

215 フラストレートハニカム磁性体の多重 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

216

スピンパイエルス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 Spin-Peierls System

Chitoshi Yasuda

University of the
Ryukyus217

マニフォールドラーニングを用いたタンパク質 吉留
リガンド複合体の解離定数の定量計算

崇東北大学大学院工学研究科

Quantitative computation of the dissociation rate of a proteinligand complex using a manifold-learning technique

Takashi Yoshidome

Tohoku University

214

貴司

University of Hyogo

150

No.

課題名

218 摩擦の物理

氏名
松川

宏

所属

Title

Name

Organization

青山学院大学理工学部

Physics of Friction

Hiroshi Matsukawa

Aoyama Gakuin
University

ISSP Activity Report 2018219

キャリア注入した二次元層状物質の電子構造及び超伝導の圧力依存性

Jeschke
Harald

岡山大学異分野基礎科学研究所

Doping effect on electronic structure and superconductivity in
two-dimensional layered materials

Harald Jeschke

Okayama University

220

メソポーラスシリカの界面との相互作用が水のダイナミクスに及ぼす影響

水口

京都工芸繊維大学

Effect of interface on the dynamics of water confined inmesoporous silica

Tomoko Mizuguchi

Kyoto Institute ofTechnology221

相転移を起こす系における固有状態熱化仮説の
数値的研究

伊與田

東京大学工学系研究科

Numerical study of eigenstate thermalization hypothesis inphase transition

Eiki Iyoda

The University of
Tokyo

222

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

223 相平衡とポリアモルフィズム

渕崎

員弘

愛媛大学理工学研究科

Phase equilibria and polyamorphism

Kazuhiro Fuchizaki

Ehime University

224 固体高次高調波における緩和効果の影響篠原康

東京大学工学系研究科

Relaxation effect on high-order harmonic generation fromcrystalline solids

Yasushi Shinohara

The University of
Tokyo

福井

賢一

大阪大学大学院基礎工学研究科

Analysis on Structuring and Dynamics of Ionic Liquid Forming
Ken-Ichi Fukui
Electric Double Layer at Electrode Interfaces

Osaka University渕崎

員弘

愛媛大学理工学研究科

Phase equilibria and polyamorphism

Kazuhiro Fuchizaki

Ehime 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

Magnetic excitation and spin transport in frustrated quantum
spin chain

Hiroaki Onishi

Japan Atomic Energy
Agency北海道大学理学部

Analysis of many-body effects in Bose-Einstein condensate

Takafumi Kita

Hokkaido University

225

電極と接して電気二重層を形成するイオン液体の構造化とダイナミクスの解析

226 相平衡とポリアモルフィズム
227

フラストレート量子スピン鎖の磁気励起とスピ
ン伝導

228 Bose-Einstein 凝縮相における多体効果の解析
229

フラストレート・ベクトルスピン模型におけるスピングラス転移230 乱流熱流動の RANS-LES ハイブリッド解析

北

朋子
英輝

孝文

吉野

元

大阪大学サイバーメディアセンタ
Spinglass transitions in frustrated vector spin modelsーHajime Yoshino

Osaka University

森本

賢一

東京大学大学院工学系研究科

RANS-LES Hybrid Analysis of Turbulent Heat Transfer

Kenichi Morimoto

The University of
Tokyo

田村

亮

国立研究開発法人 物質・材料研
究機構

Development of effective model estimation method bymachine learning for multiple input measured data

Ryo Tamura

National Institute forMaterials Science康平

東京大学 大学院工学系研究科

Study on `cubic algorithm' for solving n-beam Takagi-Taupin
equation

Kouhei Okitsu

The University ofTokyo

東京大学大学院工学系研究科

Theoretical and experimental investigation on phase selectivity
Tatsuya Okubo
in zeolite syntheses

The University ofTokyo

早稲田大学 グリーン・コンピューティング・システム研究機構

Study on quantum annealing from a viewpoint of statisticalmechanics

Waseda University

231

機械学習を用いた複数種類入力による有効モデル推定手法の開発

232

多波高木方程式の「キュービックアルゴリズム」
沖津による解法の研究

233

ゼオライト合成における相選択性の理論的、実
験的検討

大久保

234

量子アニーリングの性能向上を目指した統計力
学研究

田中

達也
宗

Shu Tanaka

No.

課題名

235

量子モンテカルロ法を用いた 1 次元相互作用電子系の輸送特性評価236

異方的形状細胞の込み合いによる集団運動転移の数値的研究237 大規模分子動力学データの圧縮方法の検討

氏名

所属

加藤

岳生

東京大学物性研究所

Transport properties of one-dimensional interacting electron
systems by a quantum Monte Carlo method

Takeo KatoThe University of
Tokyo

松下

勝義

大阪大学理学研究科

Numerical study of collective motion transition of crowding
cells with anisotropic shape.

Katsuyoshi
Matsushita

Osaka University

渡辺

宙志

東京大学物性研究所

Data compression for molecular dynamics simulation on thebasis of multiresolution analysis

Hiroshi Watanabe

The University of
Tokyo

Title

Name

Organization

238

コロイド分散系のダイナミクスに対するSchmidt 数の影響

田中肇

東京大学生産技術研究所

Schmidt number dependence on dynamics in colloidal
suspensions

Hajime Tanaka

The University of
Tokyo

239

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

高江

恭平

東京大学生産技術研究所

Dynamics of structure formation in charged colloids

Kyohei Takae

The University of
Tokyo

田中

肇

東京大学生産技術研究所

Hydrodynamic effects on crystal nucleation in a hard-sphere
colloidal system

Hajime Tanaka

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

240 荷電コロイド系の動的な構造形成
241

剛体球コロイド系の結晶核形成に対する流体力
学的相互作用の影響

242 地震の統計モデルの数値シミュレーション

ISSP Activity Report 2018243

テンソルネットワーク法による量子多体問題ソ
ルバー開発

森田

悟史

東京大学物性研究所

Quantum many-body problem solver with tensor network
methods

Satoshi Morita

The University of
Tokyo

244

2 次元古典 Heisenberg 反強磁性体のスピン伝導・
青山
熱伝導

和司

大阪大学大学院理学研究科

Transport properties of the classical antiferromagnetic
Heisenberg model in two dimension

Kazushi Aoyama

Osaka University

中原明生

日本大学理工学部

Numerical simulation for memory effect in paste of flow andvibration

Akio Nakahara

Nihon University

245 ペーストの流れと揺れの記憶の数値実験
246

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
systemKunio Ishida

Utsunomiya University247

シリカガラスの圧力誘起相転移過程における中間状態の圧縮挙動と不均質構造の研究

若林大佑

高エネルギー加速器研究機構物質 Compression behavior and inhomogeneous structure of silica
glass in its intermediate state in structural transformations
構造科学研究所

Daisuke
Wakabayashi

High Energy
Accelerator Research
Organization

248 高密剛体球系における非平衡相転移と遅い緩和

礒部

雅晴

名古屋工業大学

Nonequilibrium phase transition and slow dynamics in thedense hard sphere systems

Masaharu Isobe

Nagoya Institute ofTechnology

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

大場友則

千葉大学大学院理学研究院

Organic Electrolyte Solution in Nanospaces

Tomonori Ohba

Chiba 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 University249

空間構造をもつ一次元量子スピン系の数値的研
究250 有機電解液のナノ空間中挙動の解明

151

251

ソフトマテリアルの秩序構造とその光学的性質
の計算

利根川

152

No.

課題名

ISSP Activity Report 2018

氏名

所属

252

固有状態熱化仮説を用いた非平衡定常状態の解
析

白井

達彦

東京大学物性研究所

Application of Eigenstate Thermalization Hypothesis to Nonequilibrium steady states

Tatsuhiko Shirai

The University ofTokyo

253 地震の統計モデルの数値シミュレーション

川村

光

大阪大学理学研究科

Numerical simulations on statistical models of earthquakes

Hikaru Kawamura

Osaka University

254 ナノ構造によるトポロジカル状態の実現と操作

苅宿

俊風

物材機構

Realization and Manipulation of Topological States by
Nanostructures

Toshikaze Kariyado

NIMS

255

長波長の光を吸収する光合成色素設計のための励起状態データベースの作成

小松勇Constructing the database of exited states for desigining
自然科学研究機構アストロバイオ
photosynthetic pigments to absorb the longer wavelength
ロジーセンターradiation

Yu Komatsu

National Institutesof Natural Sciences
AstroBiology Center

256

フェーズフィールド法を用いたアメーバ細胞運
動動態モデリング斉藤稔

東京大学理学系研究科

Phase field simulation for amoeboid cells

Nen Saito

The University of
Tokyo

257

コロイド粒子系における大規模分子シミュレー
ション

寺尾

貴道

岐阜大学工学部

Molecular simulation of colloidal suspensions

Takamichi Terao

Gifu University258

変形下における環動ゲルの環と軸分子の分子ダ
イナミクス解析眞弓

皓一

東京大学大学院新領域創成科学研 Study on Dynamics of Ring and Axial Molecules of Slide-Ring
Gel Under Deformation
究科

Koichi Mayumi

The University of
Tokyo

259

ハミルトニアン行列の低ランク行列近似を用いた全固有値計算と量子スピン系への応用

五十嵐

260

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

261

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

262 ランダム媒質の光学特性値
263

Title

Name

Organization

東京大学情報基盤センター

Full diagonalization using low-rank approximation to
Hamiltonian matrices and its application to quantum spinmodelsRyo Igarashi

The University of
Tokyo

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

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町田学

浜松医科大学フォトニクス医学研
Optical properties of random media究部

Manabu Machida

Hamamatsu University
School of Medicine

和司

大阪大学大学院理学研究科

Theoretical study of dynamical spin correlations in Heisenberg
Kazushi Aoyama
antiferromagnets on the triangular lattice

Osaka University

三角格子 Heisenberg 反強磁性体における動的ス
青山
ピン相関の理論研究

亮

264 強磁性超伝導における渦糸の数値的研究

常次

宏一

東京大学物性研究所

Numerical study of vortices in ferromagnetic superconductor

Hirokazu Tsunetsugu

The University ofTokyo

265 込み合い細胞組織運動の不安定性の数値解析

松下勝義

大阪大学理学研究科

Numerical Analysis of Instability in Motion of Crowding
Cellular Tissue

Katsuyoshi
Matsushita

Osaka University

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松田康弘

東京大学物性研究所

Estimation of the density of states using Maximum entropy
method and Sparse modeling

Yasuhiro Matsuda

Institute for Solid State
Physics267

コロイド粒子系における大規模分子シミュレー
ション

寺尾

貴道

岐阜大学工学部

Molecular simulation of colloidal suspensions

Takamichi Terao

Gifu University268

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

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

孝

No.

課題名

269

二体自己無撞着法を用いた多層系銅酸化物の超伝導の理論的研究

西口和孝

神戸大学大学院科学技術イノベー Theoretical study for superconductivity in multilayer cuprates
with two-particle self-consistent approach
ション研究科270

カゴメ格子反強磁性体，および関連した系の諸問題の理論的研究

福元好志

東京理科大学

Theoretical studies on kagome antiferromagnets and related
systems271

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

Numerical Study of One Dimensional Frustrated Quantum Spin
Kazuo Hida
Systems

Saitama University272

フラストレート型遍歴磁性体における多重スピ
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 multiple spin density waves and magnetic skyrmionsTakashi Uchidain frustrated itinerant magnets

Hokkaido Universityof Science大場友則

千葉大学大学院理学研究院

Organic Electrolyte Solution in Nanospaces

Tomonori Ohba

Chiba University

橘高

俊一郎

東京大学物性研究所

Field-angle dependence of the entropy in the spin-ice system
calculated by the Monte-Carlo method

Shunichiro Kittaka

The University ofTokyo

275 ペーストの流れの記憶の数値実験中原明生

日本大学理工学部

Numerical simulation for memory of flow in paste

Akio Nakahara

Nihon University

276 ナノ構造材料および界面の力学物性モデリング米津明生

中央大学理工学部

Mechanical modeling of nano structured materials andinterfaces

Akio Yonezu

Chuo University

277 セブンナノゴールド

デニコラ
ントニオ

山形大学工学部

7NANOGOLDS

Antonio De Nicola

Yamagata University

273 有機電解液のナノ空間中挙動の解明
274

モンテカルロ法によるスピンアイス系のエント
ロピー磁場角度変化のシミュレーション

氏名

所属

ア

Title

Name

Organization

Kazutaka Nishiguchi Kobe University
Fukumoto Yoshiyuki

Tokyo University of
Science

ISSP Activity Report 2018278

有向パーコレーション転移点近傍における界面の成長とゆらぎに関する数値的研究

平岩徹也

東京大学大学院理学系研究科

Numerical simulation of interfacial growth and fluctuation near
Tetsuya Hiraiwa
the directed percolation transition

The University of
Tokyo

279

非平衡定常系に拡張された熱力学関数による構造形成の研究中川尚子

茨城大学理学部

Macroscopic properties characterized by an extended
thermodynamic functions to nonequilibrium

Naoko Nakagawa

Ibaraki University

湯川諭

大阪大学大学院理学研究科

Statistical Properties of a River Network

Satoshi Yukawa

Osaka University

一将

東京大学大学院理学系研究科

Numerical investigations of initial-condition-dependent
universality of Kardar-Parisi-Zhang interfaces

Kazumasa Takeuchi

The University ofTokyo

東京大学生産技術研究所

Fractality of the Anderson localization with binary randomness Naomichi Hatano

The University ofTokyo

産業技術総合研究所

Large-Scale Molecular Dynamics Simulation Study on the
Crystallization Mechanism of Water Including Air Molecules

National Institute forAdvanced Industrial
Science and Technology

280 河川ネットワークの統計的性質
281

Kardar-Parisi-Zhang 界面の初期条件依存普遍性
竹内に関する数値的研究

282

バイナリーランダムネスのアンダーソン局在のフラクタル性羽田野

283

空気分子を含む水の結晶化機構に関する大規模
分子動力学シミュレーション研究

灘

直道

浩樹

Hiroki Nada

153

154

平成 30 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 2018

ISSP Activity Report 2018前期 / The first half term
No.

課題名

氏名

所属

Title

Name

Organization

1

高機能半導体デバイス

押山

淳

名古屋大学

未来材料・シス Exploration of new-functionality and high-performancesemiconductor devices
テム研究所

Atsushi Oshiyama

Nagoya University2電子の強相関と強い電子格子相互作用が生む創
発物性

今田

正俊

東京大学

大学院工学系研 Emergent Phenomena from Combined Strong Electron
Correlation and Electron-Phonon Coupling
究科

Masatoshi Imada

The University of
Tokyo

3

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

First-Principles Phase Field Mapping

Masanori Kohyama

National Institute ofAdvanced Industrial
Science and Technology

4

重点課題 5「エネルギー変換 ( 化学エネルギー )」 杉野

修

東京大学

物性研究所

Priority project 5 -- energy conversion (chemical energy)

Osamu Sugino

The University of
Tokyo

5

電解質液体の階層動力学と機能物性の分子動力
学計算

芝

隼人

東北大学

金属材料研究所

Molecular dynamics simulation of the hierarchical dynamics
and functional dynamics of electrolyte liquids

Hayato Shiba

Tohoku University

6

量子ドット系における多体相関効果がもたらすスピン緩和率変動に関する研究

吉見

一慶

東京大学

物性研究所

Study of many-body correlation effects on spin relaxation rate
in quantum dots

Kazuyoshi Yoshimi

The University of
Tokyo

7

トポロジカルディラック半金属におけるスピン
ホール磁化スイッチング

三澤

貴宏

東京大学

物性研究所

Spin Hall magnetization switching in topological Diracsemimetal

Takahiro Misawa

The University of
Tokyo

8

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

9

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

10

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

11

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
Science

12

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

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.

Susumu Okazaki

Nagoya University

13

グリーン関数法とフラグメント分子軌道法に基づいた励起状態理論の開発

藤田貴敏

分子科学研究所

Development of an excited-state theory based on many-body
Green’ s functions and fragment molecular orbital method

Takatoshi Fujita

Institute for Molecular
Science14

第一原理計算と多階層連結シミュレーションによるマテリアルデザイン

福島

鉄也

大阪大学

Tetsuya Fukushima

Osaka University

サブ課題 G ④大型実験施設とApplication of Tensor Network Methods to Condensed Matter
Physics

Cooperation Research with Big Experimental Facilities

ナノサイエンス
デザイン教育研 First-principles materials design by multi-scale simulation
究センター

No.

課題名

氏名

所属

Title

Name

Organization

15

ナトリウム二次電池材料の電子論

小口

多美夫

大阪大学

産業科学研究所 Electron Theory on Sodium Secondary-Battery Materials

Tamio Oguchi

Osaka University

16

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 University17

永久磁石材料開発

三宅隆

産業技術総合研究所

Development of permanent magnet materials

Takashi Miyake

National Institute ofAdvanced Industrial
Science and Technology

19

Ｂ、Ｃ、Ｎを用いた電子デバイス新物質の設計
研究

斎藤

晋

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

20

磁性材料における界面磁気特性の第一原理計算

合田

義弘

東京工業大学

物質理工学院

First-principles calculations of interface magnetic properties at
Yoshihiro Gohda
magnetic materials

21

複雑混相流動のマルチスケールシミュレーショ
ン

川勝

年洋

東北大学

大学院理学研究
Multiscale simulations on complex multiphase flows
科

Toshihiro Kawakatsu Tohoku University

22

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

Hiroshi Noguchi

The University of
Tokyo

23

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

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 University24

経路積分分子動力学法を用いた含水鉱物結晶の
計算 II

飯高

敏晃

理化学研究所Computational study of hydrous minerals using the path
integral molecular dynamics method II

Toshiaki Iitaka

RIKEN

Molecular Dynamics Simulation of Complex Fluids

Tokyo Institute ofTechnology

後期 / The second half term

ISSP Activity Report 2018

155

No.

課題名

氏名

所属

25

テンソルネットワークと機械学習を組み合わせた高精度量子格子模型ソルバーの超伝導機構解
明への応用

今田

正俊

東京大学

26

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

27

普遍的ガラス性緩和の数値研究―分子性液体から電解質液体まで芝

28

量子ドット系における異方的空間ポテンシャルがもたらすスピン緩和率変動に関する研究

吉見

29
30

Title

Applications of highly accurate lattice model solvers with
大学院工学系研
tensor network and machine learning for mechanisms of
究科
superconductivity

Name

Organization

Masatoshi Imada

The University ofTokyoFirst-Principles Phase Field Mapping

Masanori Kohyama

National Institute ofAdvanced Industrial
Science and Technology

東北大学

金属材料研究所

Numerical simulations of universal features of slow glassy
dynamics – from molecular liquids to electrolytes

Hayato Shiba

Tohoku University

一慶

東京大学

物性研究所

Study of spatial anisotropy potential effects on spin relaxation
rate in quantum dots

Kazuyoshi Yoshimi

The University ofTokyo

第一原理有効模型導出ソフトウェア RESPACK を三澤用いた強相関量子系の解析

貴宏

東京大学

物性研究所

Study of correlated quantum many-body systems using
RESPACK

Takahiro Misawa

The University ofTokyo

光・電子融合デバイス

一浩

筑波大学

計算科学研究セ
Unified Photonic-Electronic Devices
ンター

Kazuhiro Yabana

University of Tsukuba

矢花

隼人

156
ISSP Activity Report 2018

No.

課題名

氏名

所属

31

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

32

エネルギーの変換・貯蔵 – 電気エネルギー : 全
電池シミュレータの基盤技術の開発研究

岡崎

進

名古屋大学

33

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

34

酸素レドックス反応を伴う電極材料の理論的設
計

山田

35

複雑流体の分子動力学計算

36
37

Title

Organization

Naoki Kawashima

The University ofTokyo

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

Susumu Okazaki

Nagoya University

北海道大学

大学院理学研究 Ab initio study toward abundant element nanocatalysts withless precious metals
院

Tetsuya Taketsugu

Hokkaido University

淳夫

東京大学

大学院工学系研 Theoretical design of electrode materials with oxygen redox
activity
究科

Atsuo Yamada

The University of
Tokyo

野口

博司

東京大学

物性研究所

Molecular Dynamics Simulation of Complex Fluids

Hiroshi Noguchi

The University ofTokyoオーダー N 第一原理分子動力学法による珪酸塩
融体の構造研究飯高敏晃

理化学研究所

Structure study of silicate melts using linear scaling ab initio
molecular dynamics

Toshiaki Iitaka

RIKEN

超並列電子状態計算とデータ駆動科学の融合による大規模デバイス材料研究

星Takeo Hoshi

Tottori University

健夫

Tensor Network Method and Its Application to Condensed
Matter Physics

Name

工学研究科機械
Large-scale device-material research by massively parallel
鳥取大学大学院 宇宙工学専攻応electronic structure calculation and data-driven science
用数理工学講座

ISSP Activity Report 2018157

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 achievementsin the year 2018 include: (1) 31P-NMR study on the J1-J2 frustrated square lattice antiferromagnet RbMoOPO4Cl under highpressure, which revealed a first-order transition between low pressure columnar-type to high pressure Neel-type antiferromagnetic structures, (2) discovery of sequential electronic and structurel transitions in the spin-orbit coupled metallic pyrochlore
compound Cd2Red2O7Cd2 by 111Cd-NMR measurements, which revealed breaking of inversion and cubic symmetries taking
place at slightly different temperatures, (3) 51V-NMR investigation on the spin structure of a Neel-type skyrmion material
GaV4Se8 and first microscopic observation of the defrmation of spin texture of the skyrmion lattice by oblique magnetic fields.
*Inelastic Neutron Scattering Study of the Spin Dynamics in the Breathing Pyrochlore System LiGa

1.

0.95In0.05Cr4O8:
Y. Tanaka, R. Wawrzynczak, M. D. Le, T. Guidi, Y. Okamoto, T. Yajima, Z. Hiroi, M. Takigawa and G. J. Nilsen,
J. Phys. Soc. Jpn. 87 (2018) 073710.

2.

†*Field-enhanced quantum fluctuation in an S = 1/2 frustrated square lattice: H. Yamaguchi, Y. Sasaki, T. Okubo,

M. Yoshida, T. Kida, M. Hagiwara, Y. Kono, S. Kittaka, T. Sakakibara, M. Takigawa, Y. Iwasaki and Y. Hosokoshi, Phys.
Rev. B 98 (2018) 094402 (1-6).
3.

*Universal geometric frustration in pyrochlores: B. A. Trump, S. M. Koohpayeh, K. J. T. Livi, J. -J. Wen, K. E. Arpino,

Q. M. Ramasse, R. Brydson, M. Feygenson, H. Takeda, M. Takigawa, K. Kimura, S. Nakatsuji, C. L. Broholm andT. M. McQueen, Nat. Commun. 9 (2018) 2619 (1-10).

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
2018. (1) We studied the superconducting gap symmetry of a candidate triplet superconductor Sr2RuO4. We found that the
fourfold angular oscillation of the heat capacity under an in-plane rotating magnetic field does not change its sign even at very
low temperature of 0.04Tc. The results can be explained by Doppler-shifted quasiparticles around horizontal line nodes on the
Fermi surface, in disagreement with the chiral p-wave scenario. (2) We developed a new technique for measuring the thermodynamic entropy as a function of the magnetic field angle. When the magnetic field is rotated under adiabatic conditions, thesample temperature changes owing to the field-angle variation of its entropy. By investigating this effect, the rotational magnetocaloric effect, the field-angle dependence of the entropy can be determined. (3) We developed an experimental method of
low-temperature magnetization measurements with an in-situ two-axis alignment of the sample orientation. The sample alignment can be done within an accuracy of 0.02 deg. using a piezo-stepper-driven goniometer combined with a home-made tilting
stage. This technique is useful to study magnetic phase transitions of strongly anisotropic systems.
1.

Field-rotational Magnetocaloric Effect: A New Experimental Technique for Accurate Measurement of the Anisotropic
Magnetic Entropy: S. Kittaka, S. Nakamura, H. Kadowaki, H. Takatsu and T. Sakakibara, J. Phys. Soc. Jpn. 87 (2018)073601 (1-5).

2.

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).

3.

Low-Temperature Magnetization Measurements with Precise Two-Axis Alignment of the Sample Orientation:
S. Nakamura, A. Kasahara, S. Kittaka, Y. Kono, Y. Onuki and T. Sakakibara, J. Phys. Soc. Jpn. 87 (2018) 1140018 (1-5).

4.

†*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).

* Joint research among groups within ISSP.

158

ISSP Activity Report 2018

5.

Searching for Gap Zeros in Sr 2 RuO 4 via Field-Angle-Dependent Specific-Heat Measurement: S. Kittaka,
S. Nakamura, T. Sakakibara, N. Kikugawa, T. Terashima, S. Uji, D. A. Sokolov, A. P. Mackenzie, K. Irie, Y. Tsutsumi,
K. Suzuki and K. Machida, J. Phys. Soc. Jpn. 87 (2018) 093703 (1-5).

6.

*Disorder-sensitive nodelike small gap in FeSe: Y. Sun, S. Kittaka, S. Nakamura, T. Sakakibara, P. Zhang, S. Shin,

7.

K. Irie, T. Nomoto, K. Machida, J. Chen and T. Tamegai, Phys. Rev. B 98 (2018) 064505 (1-7).

†*Field-enhanced quantum fluctuation in an S = 1/2 frustrated square lattice: H. Yamaguchi, Y. Sasaki, T. Okubo,

M. Yoshida, T. Kida, M. Hagiwara, Y. Kono, S. Kittaka, T. Sakakibara, M. Takigawa, Y. Iwasaki and Y. Hosokoshi, Phys.
Rev. B 98 (2018) 094402 (1-6).
8.

†Field-induced quantum magnetism in the verdazyl-based charge-transfer salt [o-MePy-V-(p-Br) ]FeCl : Y. Iwasaki,
2
4

T. Kida, M. Hagiwara, T. Kawakami, Y. Kono, S. Kittaka, T. Sakakibara, Y. Hosokoshi and H. Yamaguchi, Phys. Rev. B
98 (2018) 224411 (1-8).
9.

†Metamagnetic crossover in the quasikagome Ising Kondo-lattice compound CeIrSn: S. Tsuda, C. L. Yang, Y. Shimura,

K. Umeo, H. Fukuoka, Y. Yamane, T. Onimaru, T. Takabatake, N. Kikugawa, T. Terashima, H. T. Hirose, S. Uji,
S. Kittaka and T. Sakakibara, Phys. Rev. B 98 (2018) 155147 (1-7).
10. 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).
11. 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.
12. Investigation of the tricritical point of the ising ferromagnet URhGe by angle-resolved measurements: S. Nakamura,
S. Kittaka, T. Sakakibara, Y. Shimizu, Y. Kono, Y. Haga, J. Pospíšil and E. Yamamoto, AIP Advances 8 (2018) 101305(1-5).
13. †Superconducting symmetries and magnetic responses of uranium heavy-fermion systems UBe13 and UPd2Al3:
Y. Shimizu, S. Kittaka, T. Sakakibara and D. Aoki, Physica B: Condensed Matter 536 (2018) 553-557.
14. †*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).
15. Magnetization study on the ising ferromagnet URhGe with high-precision angle-resolved magnetic field near the hardaxis: S. Nakamura, T. Sakakibara, Y. Shimizu, S. Kittaka, Y. Kono, Y. Haga, J. Pospisil and E. Yamamoto, Progress innuclear science and technology 5 (2018) 123-127.
16. †Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5: M. Yokoyama, K. Suzuki,
K. Tenya, S. Nakamura, Y. Kono, S. Kittaka and T. Sakakibara, Phys. Rev. B 99 (2019) 054506 (1-6).
17. †*S=1/2 ferromagnetic Heisenberg chain in a verdazyl-based complex: N. Uemoto, Y. Kono, S. Kittaka, T. Sakakibara,
T. Yajima, Y. Iwasaki, S. Miyamoto, Y. Hosokoshi and H. Yamaguchi, Phys. Rev. B 99 (2019) 094418 (1-6).
18. *Unconventional field-induced spin gap in an S = 1/2 chiral staggered chain: J. Liu, S. Kittaka, R. D. Johnson,
T. Lancaster, J. Singleton, T. Sakakibara, Y. Kohama, J. van Tol, A. Ardavan, B. H. Williams, S. J. Blundell, Z. E.
Manson, J. L. Manson and P. A. Goddard, Phys Rev Lett 122 (2019) 057207.

Mori group
We have successfully developed and unveiled unprecedented functional properties for the molecular materials. The majorachievements in 2018 are (1) to develop anhydrous organic proton conductors with dicarboxylic acids and imidazoles as anelectrolyte of a fuel cell for medium temperatures, (2) to fabricate successfully and characterize the hydrogen-bonded molecularbilayer of catechol-fused TTF and imidazole-terminated alkanethiolate on Au(111), and (3) to estimate the thermoelectric
property of the organic conductors, β'-(BEDT-TTF)3(CoCl4)2-x(GaCl4)x, as thermoelectric materials.
1.

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).

† Joint research with outside partners.

ISSP Activity Report 2018

159

2.

Size effects on supercooling phenomena in strongly correlated electron systems: IrTe2 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).

3.

†*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.
4.

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 122 (2018) 11623.

5.

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.

6.

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.

7.

Charge Order and Poor Glass-forming Ability of an Anisotropic Triangular-lattice System, θ-(BEDT-TTF)2TlCo(SCN)4,
Investigated by NMR: K. Miyagawa, T. Sato, H. Hashimoto, M. Kodama, K. Ohnoh, A. Ueda, H. Mori and K. Kanoda,
J. Phys. Soc. Jpn. 88 (2019) 034705.

8.

Hysteretic Current–Voltage Characteristics in the Deuterium-Dynamics-Triggered Charge-Ordered Phase of κ-D3
(Cat-EDT-TTF)2: A. Ueda, K. Kishimoto, Y. Sunairi, J. Yoshida, H. Yamakawa, T. Miyamoto, T. Terashige, H. Okamotoand H. Mori, J. Phys. Soc. Jpn. 88 (2019) 034710.

9.

*Direct Evidence of Interfacial Hydrogen Bonding in Proton-Electron Concerted 2D Organic Bilayer on Au Substrate:

S. Yamamoto, H. S. Kato, A. Ueda, S. Yoshimoto, Y. Hirata, J. Miyawaki, K. Yamamoto, Y. Harada, H. Wadati, H. Mori,J. Yoshinobu and I. Matsuda, e-Journal of Surface Science and Nanotechnology 17 (2019) 49-55.
10. Dynamics of Water Molecules in a 3-Fold Interpenetrated Hydrogen-Bonded Organic Framework Based on Tetrakis(4-pyridyl)methane: D. Inokuchi, Y. Hirao, K. Takahashi, K. Matsumoto, H. Mori and T. Kubo, J. Phys. Chem. C 123(2019) 6599.
11. High-Temperature Cooperative Spin Crossover Transitions and Single-Crystal Reflection Spectra of [FeIII(qsal)2](CH3OSO3) and Related Compounds: K. Takahashi, K. Yamamoto, T. Yamamoto, Y. Einaga, Y. Shiota, K. Yoshizawa
and H. Mori, Crystals 9 (2019) 81.
12. Construction of three-dimensional anionic molecular frameworks based on hydrogen-bonded metal dithiolene
complexes and the crystal solvent effect: S. Yokomori, A. Ueda, T. Higashino, R. Kumai, Y. Murakami and H. Mori,
CrystEngComm 21 (2019) 2940-2948.
13. Di- and tetramethoxy benzothienobenzothiophenes: substitution position effects on the intermolecular interactions,crystal packing and transistor properties: T. Higashino, A. Ueda and H. Mori, New J. Chem. 43 (2019) 884.
14. Strange metal from a frustration-driven charge order instability: T. Sato, K. Kitai, K. Miyagawa, M. Tamura, A. Ueda,
H. Mori and K. Kanoda, Nature Mater 18 (2019) 229.
15. New π-extended catecholato complexes of Pt(II) and Pd(II) containing a benzothienobenzothiophene (BTBT) moiety:synthesis, electrochemical behavior and charge transfer properties: K. Tahara, Y. Ashihara, T. Higashino, Y. Ozawa,T. Kadoya, K. Sugimoto, A. Ueda, H. Mori and M. Abe, Dalton Transactions (2019), in print.
16. 有機結晶を舞台とした π 電子 - プロトンカップリング物性の新展開 : 森 初果 , 日本物理学会誌 74、No2 (2019) 82-92.

Osada group2018 (1) In order to identify the high-magnetic-field insulator phase of graphite, we investigated the phase transition in thinfilm graphite samples, which were fabricated on silicon substrate by a mechanical exfoliation technique. The critical magnetic
fields of the high-field transition in thin-films shift to higher fields, accompanied by a reduction in temperature dependence.
These results can be qualitatively reproduced by the density-wave model with the quantum size effect. Our findings establish
the density-wave state standing along the out-of-plane direction. (2) Recently, the small spin-orbit interaction (SOI) gap was
proposed as an origin of the anomalous insulating behavior at low temperatures in an organic Dirac fermion system α-(BEDTTTF)2I3. We built a lattice model with plausible SOI coupling, and indicated that the gapped state is a topological insulator. Thismodel is an organic version of the Kane-Mele model for graphene.
1.

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).
* Joint research among groups within ISSP.

160

ISSP Activity Report 2018

2.

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).

3.

Tunable magnetoresistance in thin-film graphite field-effect transistor by gate voltage: T. Taen, K. Uchida, T. Osada and
W. Kang, Phys. Rev. B 98 (2018) 155136 (1-7).

4.

Double carrier transport in electron doped region in black phosphorus FET: K. Hirose, T. Osada, K. Uchida, T. Taen,
K. Watanabe, T. Taniguchi and Y. Akahama, Appl. Phys. Lett. 113 (2018) 193101 (1-4).

5.

Anisotropy of Dirac cones and Van Hove singularity in an organic Dirac fermion system: A. Mori, M. Sato, T. Yajima,
T. Konoike, K. Uchida and T. Osada, Phys. Rev. B 99 (2019) 035106 (1-5).

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 published our works of (1) dHvA studies of CeCoIn5 at ultralow temperatures, (2) thermal Hallmeasurements of Ca kapellasite, and (3) thermal Hall measurements of a Kitaev candidate α-RuCl3. We have performed (1)additional measurements of dHvA and Co NMR of CeCoIn5 at ultralow temperatures, (2) thermal Hall measurements of anotherkagome compound, Cd kapellasite, (3) magnetic torque measurements of organic QSL candidate κ-H3(Cat-EDT-TTF)2, and (4)thermal transport studies of a chiral magnet CsCuCl3.
1.

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.

2.

*Spin Thermal Hall Conductivity of a Kagome Antiferromagnet: H. Doki, M. Akazawa, H.-Y. Lee, J. H. Han, K. Sugii,

3.

M. Shimozawa, N. Kawashima, M. Oda, H. Yoshida and M. Yamashita, Phys. Rev. Lett. 121 (2018) 097203.

Unusual Thermal Hall Effect in a Kitaev Spin Liquid Candidate α-RuCl3: Y. Kasahara, K. Sugii, T. Ohnishi, M. Shimozawa, M. Yamashita, N. Kurita, H. Tanaka, J. Nasu, Y. Motome, T. Shibauchi and Y. Matsuda, Phys. Rev. Lett. 120(2018) 217205.

Division of Condensed Matter Theory
Tsunetsugu group
We have studied topics including harmonic generation in optical response of electron systems and dynamics of charge-density
wave order in a planar organic material. We have also investigated spin current generation by light irradiation to a one-dimensional Mott insulator. We have also started a new project about highly out-of-equilibrium electron dynamics and studied the time
evolution of the one-dimensional Hubbard model. We have used a two-reservoir quench setup and calculated charge and thermal
currents using the generalized hydrodynamic theory based on Bethe ansatz.
1.

Exploring the anisotropic Kondo model in and out of equilibrium with alkaline-earth atoms: M. Kanász-Nagy,
Y. Ashida, T. Shi, C. P. Moca, T. N. Ikeda, S. Fölling, J. Ignacio Cirac, G. Zaránd and E. A. Demler, Phys. Rev. B 97(2018) 155156.

2.

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).

3.

Thermalization and prethermalization in isolated quantum systems: a theoretical overview: T. Mori, T. N. Ikeda,
E. Kaminishi and M. Ueda, J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 112001.

4.

Nodal topology in d-wave superconducting monolayer FeSe: T. Nakayama, T. Shishidou and D. F. Agterberg, Phys. Rev.
B 98 (2019) 214503.

5.

Floquet-theoretical formulation and analysis of high-order harmonic generation in solids: T. N. Ikeda, K. Chinzei and
H. Tsunetsugu, Phys. Rev. A 98 (2019) 063426.

6.

Revisiting the Floquet-Bloch theory for an exactly solvable model of one-dimensional crystals in strong laser fields:
T. N. Ikeda, Phys. Rev. A 97 (2019) 063413.

7.

Photoinduced Dynamics of Commensurate Charge Density Wave in 1T-TaS2 Based on Three-Orbital Hubbard Model:
T. N. Ikeda, H. Tsunetsugu and K. Yonemitsu, Appl. Sci. 9 (2019) 70.
† Joint research with outside partners.

ISSP Activity Report 2018161

Kato group
The main research subject of Kato lab. is theory of non-equilibrium properties in mesoscopic devices. We have studied (1) spincurrent noise at the interface between a ferromagnetic insulator and a superconductor, (2) surface plasmon polaritons using Weyl
semimetals, (3) domain wall formation in a chiral p-wave superconductor, (4) heat transport via a two-state system, (5) adiabaic
electron transport via a quantum dot, and (6) Bell-state correlation in a Kondo quantum dot.
1.

DC-Current Induced Domain Wall in a Chiral p -Wave Superconductor: T. Jonckheere and T. Kato, J. Phys. Soc. Jpn. 87(2018) 094705 (1-6).

2.

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 (1-13).

3.

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).

4.

Quantum Critical Phenomena in Heat Transport via a Two-State System: T. Yamamoto and T. Kato, Phys. Rev. B 98
(2018) 245412 (1-8).

5.

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).

6.

Heat transport via a local two-state system near thermal equilibrium: T. Yamamoto, M. Kato, T. Kato and K. Saito, New
J. Phys. 20 (2018) 093014 (1-20).

7.

*Evolution of Magnetic Double Helix and Quantum Criticality near a Dome of Superconductivity in CrAs: M. Matsuda,

F. K. Lin, R. Yu, J.-G. Cheng, W. Wu, J. P. Sun, J. H. Zhang, P. J. Sun, K. Matsubayashi, T. Miyake, T. Kato, J.-Q. Yan,
M. B. Stone, Q.-M. Si, J. L. Luo and Y. Uwatoko, Phys. Rev. X 8 (2018) 031017 (1-12).
8.

国際物理オリンピック 2018 ポルトガル大会報告 : 加藤 岳生 , 大学の物理教育 24 (2018) 112-116.

9.

Surface plasmon polaritons in thin-film Weyl semimetals: T. Tamaya, T. Kato, K. Tsuchikawa, S. Konabe and
S. Kawabata, J. Phys.: Condens. Matter 31 (2019) 305001 (1-10).

10. Bell-state correlations of quasiparticle pairs in the nonlinear current of a local Fermi liquid: R. Sakano, A. Oguri,
Y. Nishikawa and E. Abe, Phys. Rev. B 99 (2019) 155106 (1-7).
11. Microscopic theory of spin transport at the interface between a superconductor and a ferromagnetic insulator: T. Kato,
Y. Ohnuma, M. Matsuo, J. Rech, T. Jonckheere and T. Martin, Phys. Rev. B 99 (2019) 144411 (1-8).
12. mVMC—Open-source software for many-variable variational Monte Carlo method: T. Misawa, S. Morita, K. Yoshimi,
M. Kawamura, Y. Motoyama, K. Ido, T. Ohgoe, M. Imada and T. Kato, Comput. Phys. Commun. 235 (2019) 447-462.
13. 非平衡状態にある近藤効果（その 1）非平衡グリーン関数入門 : 阪野 塁 , 固体物理 53 (2018) 279-303.

Division of Nanoscale Science
Katsumoto group
Transport properties of double quantum well structures with (n-i-p-i-n)-type modulation doping were studied. For spin-injection, an iron film was deposited on top of the structure. We found peculiar magnetoresistance around zero-field. The lineshapeof the magnetoresistance resembles that of anisotropic magnetoresistance. However, the origin is a kind of spin-orbit resonancedue to the coexistence of Rashba and Dresselhaus type spin-orbit interactions. The anisotropy of the magnetoresistance on thein-plane angle of the magnetic field exhibited two-fold symmetry of III-V zinc-blende type crystal supporting the interpretation.
1.

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.

2.

†Spin–orbit interaction in Pt or Bi Te nanoparticle-decorated graphene realized by a nanoneedle method: T. Namba,
2 3

3.

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.

K. Tamura, K. Hatsuda, T. Nakamura, C. Ohata, S. Katsumoto and J. Haruyama, Appl. Phys. Lett. 113 (2018) 053106.

* Joint research among groups within ISSP.

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4.

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.

5.

†Evidence for a quantum spin Hall phase in graphene decorated with Bi Te nanoparticles: K. Hatsuda, H. Mine,
2 3

6.

Quantum Hall Edge States Probed by Plasmon Excitations: A. Endo and S. Katsumoto, AAPPS Bulletin 28 (2018) No.5
28 - 30.

7.

Evidence for Spin-Triplet Electron Pairing in the Proximity-Induced Superconducting State of an Fe-Doped InAs
Semiconductor: T. Nakamura, L. D. Anh, Y. Hashimoto, S. Ohya, M. Tanaka and S. Katsumoto, Phys. Rev. Lett. 122(2019) 107001.

8.

Spin Filtering Magnetoresistance in Double‐Well Resonant Structures: T. Nakamura, Y. Hashimoto, T. Ke and S. Katsumoto, Phys. Status Solidi B 256 (2019) 1800560.

9.

*Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal: T. Ohtsuki, Z. Tian, A. Endo,

T. Nakamura, J. Li, R. Wu, S. Katsumoto and J. Haruyama, Sci. Adv. 4 (2018) eaau6915.

M. Halim, S. Katsumoto, Y. Kohama, K. Kindo, M. Lippmaa and S. Nakatsuji, Proc. Natl. Acad. Sci. USA 116 (2019)8803-8808.

10. Spatial distribution of thermoelectric voltages in a Hall-bar shaped two-dimensional electron system under a magnetic
field: A. Endo, K. Fujita, S. Katsumoto and Y. Iye, J. Phys. Commun. 3 (2019) 055005 (1-19).
11. 半導体の電気伝導における Zitterbewegung ( ジグザグ運動 ): 中村 壮智 , 勝本 信吾 , 日本物理学会誌 73 (2018) 776.

Otani group
We have studied the following topics this year; spin conversion behaviors in the bulk, the interfaces and the surfaces, magnetization dynamics in ferromagnetic nanostructures, and magneto-thermoelectric properties. In the first topic, our international
collaboration with the Spanish group revealed the mechanism of the spin Hall effect in tantalum. We also succeeded in inducing
the inverse Edelstein effect by decorating a copper surface with a lead phthalocyanine molecule. Furthermore, we have discovered that nonmagnetic metal/indium-tin-oxide interfaces can act as an efficient spin current source. In terms of magnetization dynamics, we have studied in collaboration with the Suemoto Group at ISSP on macroscopic magnetization control bysymmetry breaking of photoinduced spin reorientation with intense terahertz magnetic near field. Apart from the above, we havealso established a spin current generation by using magnon-phonon coupling.
1.

Detection of the interfacial exchange field at a ferromagnetic insulator-nonmagnetic metal interface with pure spincurrents: P. K. Muduli, M. Kimata, Y. Omori, T. Wakamura, S. P. Dash and Y. Otani, Phys. Rev. B 98 (2018) 024416.

2.

Inverse Edelstein effect induced by magnon-phonon coupling: M. Xu, J. Puebla, F. Auvray, B. Rana, K. Kondou andY. Otani, Phys. Rev. B 97 (2018) 180301.

3.

Unveiling the mechanisms of the spin Hall effect in Ta: E. Sagasta, Y. Omori, S. Vélez, R. Llopis, C. Tollan, A. Chuvilin,
L. E. Hueso, M. Gradhand, Y. Otani and F. Casanova, Phys. Rev. B 98 (2018) 060410.

4.

Direct current modulation of spin-Hall-induced spin torque ferromagnetic resonance in platinum/permalloy bilayer thinfilms: S. Hirayama, S. Mitani, Y. Otani and S. Kasai, Jpn. J. Appl. Phys. 57 (2018) 060301.

5.

*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.
6.

*Anomalous Hall effect in thin films of the Weyl antiferromagnet Mn Sn: T. Higo, D. Qu, Y. Li, C. L. Chien, Y. Otani
3

7.

Magnetothermodynamic Properties and Anomalous Magnetic Phase Transition in FeRh Nanowires: K. Matsumoto,
M. Kimata, K. Kondou, R. C. Temple, C. H. Marrows and Y. Otani, IEEE Trans. Magn. 54 (2018) 23009041-5.

8.

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).

9.

Active Control of Mode Crossover and Mode Hopping of Spin Waves in a Ferromagnetic Antidot Lattice: S. Choudhury,
S. Majumder, S. Barman, Y. Otani and A. Barman, Phys. Rev. Applied 10 (2018) 064044.

and S. Nakatsuji, Appl. Phys. Lett. 113 (2018) 202402.

10. Tunable Angle-Dependent Magnetization Dynamics in Ni80Fe20 Nanocross Structures of Varying Size: K. Adhikari,
S. Barman, R. Mandal, Y. Otani and A. Barman, Phys. Rev. Applied 10 (2018) 044010.

† Joint research with outside partners.

ISSP Activity Report 2018163

11. Voltage-Controlled Reconfigurable Spin-Wave Nanochannels and Logic Devices: B. Rana and Y. Otani, Phys. Rev.
Applied 9 (2018) 014033 (1-15).
12. †*Large enhancement of the spin Hall effect in Mn metal by Sn doping: D. Qu, T. Higo, T. Nishikawa, K. Matsumoto,
K. Kondou, D. Nishio-Hamane, R. Ishii, P. K. Muduli, Y. Otani and S. Nakatsuji, Phys. Rev. Materials 2 (2018) 102001.
13. Influence of anisotropic dipolar interaction on the spin dynamics of Ni80Fe20 nanodot arrays arranged in honeycomb andoctagonal lattices: S. Mondal, S. Barman, S. Choudhury, Y. Otani and A. Barman, Journal of Magnetism and Magnetic
Materials 458 (2018) 95-104.
14. Clear variation of spin splitting by changing electron distribution at non-magnetic metal/Bi2O3 interfaces: H. Tsai,S. Karube, K. Kondou, N. Yamaguchi, F. Ishii and Y. Otani, Sci Rep 8 (2018) 5564.
15. Quantum materials for spin and charge conversion: W. Han, Y. Otani and S. Maekawa, npj Quantum Materials 3 (2018)27 (1-16).
16. Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays: A. De,
S. Mondal, S. Sahoo, S. Barman, Y. Otani, R. K. Mitra and &. A. Barman, Beilstein J. Nanotechnol 9 (2018) 1123-1134.
17. Spin accumulation at nonmagnetic interface induced by direct Rashba–Edelstein effect: F. Auvray, J. Puebla, M. Xu,
B. Rana, D. Hashizume and Y. Otani, J Mater Sci: Mater Electron 29 (2018) 15664-15670.
18. Efficient spin current generation and suppression of magnetic damping due to fast spin ejection from nonmagnetic
metal/indium-tin-oxide interfaces: K. Kondou, H. Tsai, H. Isshiki and Y. Otani, APL Materials 6 (2018) 101105.
19. Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals: Y. Omori, E. Sagasta, Y. Niimi,
M. Gradhand, L. E. Hueso, F. Casanova and Y. Otani, Phys. Rev. B 99 (2019) 014403.
20. *Magnetic and magnetic inverse spin Hall effects in a non-collinear antiferromagnet: M. Kimata, H. Chen, K. Kondou,
S. Sugimoto, P. K. Muduli, M. Ikhlas, Y. Omori, T. Tomita, A. H. MacDonald, S. Nakatsuji and Y. Otani, Nature 565(2019) 627.

Komori group
Changes in the magnetism of epitaxially grown fcc Fe films on Cu(001) induced by single-crystal Mn overlayer are studied byscanning tunneling microscopy/spectroscopy and soft X-ray magnetic circular dichroism. Element specific magnetization curvesof the Fe layer exhibit a two-step spin reorientation transition from out-of-plane to in-plane direction by increasing the Mn
coverage. The atomic-scale characterizations of structural and electronic properties and the first-principles calculations successfully unravel the roles of the interface alloys and clarify the driving forces of the transition. Spin-resolved band L-gap surface
bands on the noble metal (111) surfaces are quantitatively studied by spin- and angle-resolved photoelectron spectroscopy witha vacuum-ultraviolet laser. The surface-state wave function is found to be predominantly of even mirror symmetry with negligible odd contribution by SARPES using a linearly polarized light.
1.

*Surface electronic states of Au-induced nanowires on Ge(0 0 1): K. Yaji, R. Yukawa, S. Kim, Y. Ohtsubo, P. L. Fèvre,2.

*Alkali-metal induced band structure deformation investigated by angle-resolved photoemission spectroscopy and

F. Bertran, A. Taleb-Ibrahimi, I. Matsuda, K. Nakatsuji, S. Shin and F. Komori, J. Phys.: Condens. Matter 30 (2018)075001 (1-7).

first-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)
3.

†*Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1): T. Nakamura, Y. Ohtsubo,

Y. Yamashita, S.-I. Ideta, K. Tanaka, K. Yaji, A. Harasawa, S. Shin, F. Komori, R. Yukawa, K. Horiba, H. Kumigashiraand S.-I. Kimura, Phys. Rev. B 98 (2018) 075431.
4.

* 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.
5.

*A Table-Top Formation of Bilayer Quasi-Free-Standing Epitaxial-Graphene on SiC(0001) by Microwave Annealing in6.

* 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.

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.

* Joint research among groups within ISSP.

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7.

†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.
8.
9.

*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).

†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).
10. *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 136 (2018) e57090.
11. *Rashba spin splitting of L-gap surface states on Ag(111) and Cu(111): K. Yaji, A. Harasawa, K. Kuroda, R. Li, B. Yan,
F. Komori and S. Shin, Physical Review B 98 (2018) 041404(R).
12. 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).
13. * 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.
14. Electronic and magnetic properties of the Fe2N monolayer film tuned by substrate symmetry: T. Hattori, T. Miyamachi,
T. Yokoyama and F. Komori, J. Phys.: Condens. Matter 31 (2019) 255001.
15. †*Coexistence of Two Types of Spin Splitting Originating from Different Symmetries: K. Yaji, A. Visikovskiy, T. Iimori,K. Kuroda, S. Hayashi, T. Kajiwara, S. Tanaka, F. Komori and S. Shin, Phys. Rev. Lett. 122 (2019) 126403.
16. †Fabrication of L10-FeNi by pulsed-laser deposition: M. Saito, H. Ito, Y. Suzuki, M. Mizuguchi, T. Koganezawa,T. Miyamachi, F. Komori, K. Takanashi and M. Kotsugi, Appl. Phys. Lett. 114 (2019) 072404.
17. Dynamic Interface Formation in Magnetic Thin Film Heterostructures: S. Nakashima, T. Miyamachi, Y. Tatetsu,
Y. Takahashi, Y. Takagi, Y. Gohda, T. Yokoyama and F. Komori, Adv. Funct. Mater. 29 (2019) 1804594.
18. †Fabrication of L10-type FeCo ordered structure using a periodic Ni buffer layer: H. Ito, M. Saito, T. Miyamachi,
F. Komori, T. Koganezawa, M. Mizuguchi and M. Kotsugi, AIP Advances 9 (2019) 045307.

Hasegawa group
We performed scanning tunneling potentiometry; STM-based microscopy that enables us to obtain spatial mapping of electrochemical potential over the sample surface, on the Si(111)7x7 surface. Since the surface has the metallic surface states,
electrical current flows through the surface layer created on an almost insulating low-doped substrate. We observed potential
drops at the step edges and the domain boundaries of the superstructure, indicating the presence of electrical resistance there. It
is found that the resistance at the step edge is rather large and thus the net conductivity of the reconstructed surface is basicallydetermined by the step density or miscut angle of the substrate. This answers the long-standing question why the conductivity
measured in macroscopic methods has dispersed so much. Our study demonstrates the importance of microscopic characterization for precise understanding of the conductivity in the two-dimensional metallic states. In the case of metallic surface states,
because of the presence of the substrate, inversion symmetry is naturally broken. Therefore, superconductivity realized on thestates cannot hold conventional s-wave Cooper pairing. In collaboration with Professor Shuji Hasegawa's group, Departmentof Physics, Univ. Tokyo, we investigated the superconductivity of a Tl-Pb monolayer formed on a Si(111) substrate by using
low-temperature STM. Since previous angle-resolved photoemission spectra (ARPES) had revealed Rashba splitting in themetallic states, p-wave triplet or other unconventional pairings was expected. Our tunneling spectra clearly showed superconducting gaps on the surface whose spectrum shape cannot be explained with the BCS function. Vortices were also observed
under magnetic fields. Curiously, however, even when the vortices cover the whole surface, the gaps still remain. In order toremove the gaps higher magnetic field has to be applied, which is quite unusual compared with the case of conventional s-wave
superconductors. Whereas the reason of the peculiar gap behaviors is not revealed yet, the results demonstrate the possibility of
unique and unconventional superconducting states on two-dimensional metallic surface states.
1.

Unconventional superconductivity in the single-atom-layer alloy Si(111)−√3×√3−(Tl,Pb): T. Nakamura, H. Kim,
S. Ichinokura, A. Takayama, A. V. Zotov, A. A. Saranin, Y. Hasegawa and S. Hasegawa, Phys. Rev. B 98 (2018) 134505(1-6).

2.

走査プローブ顕微鏡による物性研究 : 長谷川 幸雄 , 固体物理 53 (2018) 575-585.

3.

SPM 特集号『プローブ顕微鏡によるナノサイエンスの最前線』企画趣旨 : 長谷川 幸雄 , 表面と真空 61 (2018) 630-631.
† Joint research with outside partners.

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165

4.

Role of one-dimensional defects in the electrical transport through Si(111)−7×7 surface states: M. Hamada and
Y. Hasegawa, Phys. Rev. B 99 (2019) 125402 (1-5).

5.

Bulk ferromagnetic tips for spin-polarized scanning tunneling microscopy: M. Haze, H.-H. Yang, K. Asakawa,
N. Watanabe, R. Yamamoto, Y. Yoshida and Y. Hasegawa, Review of Scientific Instruments 90 (2019) 013704 (1-5).

6. プローブ顕微鏡で切り開くこれからの研究 : 長谷川 幸雄 , 表面と真空 61 (2018) 609-610.
7.

Nanoscale Magnetic Imaging: Y. Hasegawa, M. Haze and Y. Yoshida, in: Reference Module in Materials Science andMaterials Engineering, edited by M.S.J.Hashmi, (Elsevier, 2018), B9780128035818104370.

8.

Scanning Tunneling Microscopy: Y. Hasegawa, in: Compendium of Surface and Interface Analysis, edited by The
Surface Science Society of Japan, (Springer Singapore, 2018), 599-604.

Lippmaa group
Noble metal doping can be an effective way of controlling the band gap width of titanate semiconductors like SrTiO3. The
special feature of noble metal dopants is that they form impurity states close to the valence band top of the crystal, thereby
reducing the band gap without affecting the electronic structure at the conduction band bottom. For this reason, Ir, Pt, Pd, andRh doping in SrTiO3 has been studied in the area of solar-driven photocatalysis. In our recent work, we look at the microscopic
mechanism of oxide doping with noble metals and self-organized nanoscale metal segregation. We find that during thin film
growth of a noble-metal-doped SrTiO3 film, the metal can migrate rapidly on the film surface and aggregate in a nanoscale
cluster. This cluster formation, cluster size, and areal density can be controlled by the noble metal doping level. We use transmission electron microscopy and x-ray photoelectron spectroscopy to analyze the metal nanocluster formation and growth.
1.

Distortion Analysis of Ir- and Co-doped LaAlO3/SrTiO3(001) Interfaces by Hard X-ray Photoelectron Diffraction:
M. Lee, X. L. Tan, M. Yoneda, T. Okamoto, I. Tanaka, Y. Higa, D. Peng, M. Ogi, S. Kobayashi, M. Taguchi,
M. Lippmaa, M.-J. Casanove and H. Daimon, J. Phys. Soc. Jpn. 87 (2018) 084601 (1-4).

2.

Pyroelectric detection of ferroelectric polarization in magnetic thin films: R. Takahashi and M. Lippmaa, Jpn. J. Appl.
Phys. 57 (2018) 0902A1.

3.

†Noble metal nanocluster formation in epitaxial perovskite thin films: M. Lee, R. Arras, R. Takahashi, B. Warot-

4.

*Imaging

5.

Experimental realization of atomically flat and AlO2-terminated LaAlO3(001) substrate surfaces: J. R. Kim, J. N. Lee,J. Mun, Y. Kim, Y. J. Shin, B. Kim, S. Das, L. Wang, M. Kim, M. Lippmaa, T. H. Kim and T. W. Noh, Phys. Rev. Mater.
3 (2019) 023801 (1-8).

6.

Synthesis and characterization of (111)-oriented BaTiO3 thin films: T. Bolstad, K. Kjærnes, K. Raa, R. Takahashi,
M. Lippmaa and T. Tybell, Mater. Res. Express 6 (2019) 056409 (1-8).

7.

*Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal: T. Ohtsuki, Z. Tian, A. Endo,

8.

Gradient Carrier Doping as a Method for Maximizing the Photon-to-Current Efficiency of a SrTiO3 Water Splitting
Photoanode: S. Kawasaki, R. Takahashi and M. Lippmaa, J. Phys. Chem. C (2019), accepted for publication.

9.

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.

Fonrose, H. Daimon, M.-J. Casanove and M. Lippmaa, ACS Omega 3 (2018) 2169-2173.

the Formation of Ferromagnetic Domains at the LaAlO 3/SrTiO3 Interface: Y. Motoyui, T. Taniuchi,
P. Scheiderer, J. N. Lee, J. Gabel, F. Pfaff, M. Sing, M. Lippmaa, R. Claessen and S. Shin, J. Phys. Soc. Jpn. 88 (2019)034717 (1-5).

M. Halim, S. Katsumoto, Y. Kohama, K. Kindo, M. Lippmaa and S. Nakatsuji, Proc. Natl. Acad. Sci. USA 116 (2019)8803-8808.

Functional Materials Group
Yoshinobu group
We conducted several research projects in the fiscal year 2018: (1) Systematic study of the activation and hydrogenation of CO2
on Zn/Cu model catalysts by AP-XPS, IRAS, and TPD. (2) The surface chemistry of formic acid on Zn/Cu model catalysts
studied by SR-PES, IRAS, and TPD. (3) Spectroscopic characterization of Hydrogen adsorption and absorption on Pd-Cu and* Joint research among groups within ISSP.

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Pd-Ag surfaces by XPS. (4) LT-STM study of Zn on Cu(997). (5) The surface chemistry of hydrogen and formic acid on Pd/Cu
model catalysts studied by SR-PES, IRAS, and TPD. (6) Observation of CVD processes of graphene formation on a Cu surface.
1.

†*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.
2.

*Atomic Structure and Local Electronic States of Single Pt Atoms Dispersed on Graphene: K. Yamazaki, Y. Maehara,

3.

†H–D Exchange Mechanism of Butene on a D-Absorbed Pd–Au Alloy Surface: S. Ogura, S. Ohno, K. Mukai, J. Yoshi-

4.

C.-C. Lee, J. Yoshinobu, T. Ozaki and K. Gohara, J. Phys. Chem. C 122 (2018) 27292.
nobu and K. Fukutani, J. Phys. Chem. C 123 (2018) 7854.

*Enhancement of CO adsorption on oxygen-functionalized epitaxial graphene surface under near-ambient conditions:
2

S. Yamamoto, K. Takeuchi, Y. Hamamoto, R.-Y. Liu, Y. Shiozawa, T. Koitaya, T. Someya, K. Tashima, H. Fukidome,
K. Mukai, S. Yoshimoto, M. Suemitsu, Y. Morikawa, J. Yoshinobu and I. Matsuda, Phys. Chem. Chem. Phys. 20 (2018)19532.
5.

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.

6.

†An

7.

*Hydrogen adsorption and absorption on a Pd-Ag alloy surface studied using in-situ X-ray photoelectron spectroscopy

Ethynylene-Bridged Pentacene Dimer: Two-Step Synthesis and Charge-Transport Properties: K. Kawano,
H. Hayashi, S. Yoshimoto, N. Aratani, M. Suzuki, J. Yoshinobu and H. Yamada, Chem. Eur. J. 24 (2018) 14916.
under ultrahigh vacuum and ambient pressure: J. Tang, S. Yamamoto, T. Koitaya, Y. Yoshikura, K. Mukai, S. Yoshimoto,
I. Matsuda and J. Yoshinobu, Applied Surface Science 463 (2019) 1161-1167.

8.

*Mass transport in the PdCu phase structures during hydrogen adsorption and absorption studied by XPS underhydrogen atmosphere: J. Tang, S. Yamamoto, T. Koitaya, A. Yoshigoe, T. Tokunaga, K. Mukai, I. Matsuda and J. Yoshinobu, Applied Surface Science 480 (2019) 419-426.
9.

*CO

2 Activation and Reaction on Zn-Deposited Cu Surfaces Studied by Ambient-Pressure X-ray Photoelectron
Spectroscopy: T. Koitaya, S. Yamamoto, Y. Shiozawa, Y. Yoshikura, M. Hasegawa, J. Tang, K. Takeuchi, K. Mukai,
S. Yoshimoto, I. Matsuda and J. Yoshinobu, ACS Catal. 9 (2019) 4539-4550.

Akiyama group
In 2018, we fabricated and characterized 1035nm InGaAs laser diodes for short and intense pulse generation via gain switching(NEDO project). We studied single- and multi-junction solar cells for absolute electroluminescence-efficiency standard. We
made femto-sectond time-resolved laser photo-emission spectroscopy for solar cell systems (LASOR collaboration), andanalyzed their results in comparison with model calculations and time-resolved PL spectroscopy, We made computational
studies with quantum-chemistry and molecular-dynamics calculations on oxyluciferins and caged-luciferins, and corresponding
experiments.
1.

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.

2.

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).

3.

Quantitative monitoring of the internal field in the depletion layer of a GaAs-based solar cell with terahertz radiation:
K. Miyagawa, M. Nagai, G. Yamashita, M. Ashida, C. Kim, H. Akiyama and Y. Kanemitsu, Appl. Phys. Lett. 113 (2018)
163501.

4.

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).

5.

Nonequilibrium Theory of the Conversion Efficiency Limit of Solar Cells Including Thermalization and Extraction of
Carriers: K. Kamide, T. Mochizuki, H. Akiyama and H. Takato, Phys. Rev. Applied 10 (2018) 044069.

6.

Revealing Solar-Cell Photovoltage Dynamics at the Picosecond Time Scale with Time-Resolved Photoemission
Spectroscopy: Y. Hazama, Y. Ishida, L. Zhu, C. Kim, S. Shin and H. Akiyama, Phys. Rev. Applied 10 (2018) 034056.

† Joint research with outside partners.

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7.

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.

8.

Absolute bioluminescence imaging at the single-cell level with a light signal at the Attowatt level: T. Enomoto,H. Kubota, K. Mori, M. Shimogawara, M. Yoshita, Y. Ohmiya and H. Akiyama, BioTechniques 64 (2018) 270.

9.

Intrinsic and extrinsic drops in open-circuit voltage and conversion efficiency in solar cells with quantum dots
embedded in host materials: L. Zhu, H. Akiyama and Y. Kanemitsu, Scientific Report 8 (2018) 11704.

10. Synthesis and quantitative characterization of coumarin-caged D-luciferin: M. Kurata, M. Hiyama, T. Narimatsu,
Y. Hazama, T. Ito, Y. Hayamizu, X. Qiu, F. M. Winnik and H. Akiyama, Journal of Photochemistry and Photobiology B:
Biology 189 (2018) 81.
11. *Nonlinear propagation effects in high harmonic generation in reflection and transmission from gallium arsenide: P. Xia,
C. Kim, F. Lu, T. Kanai, H. Akiyama, J. Itatani and N. Ishii, Optics Express 26 (2018) 29393-29400.
12. *Femtosecond pulse generation beyond photon lifetime limit in gain-switched semiconductor lasers: T. Ito, H. Nakamae,
Y. Hazama, T. Nakamura, S. Chen, M. Yoshita, C. Kim, Y. Kobayashi and H. Akiyama, Commun. Phys. 1 (2018) 42.

Sugino group
In this fiscal year, we have developed a novel first-principles simulation method for defects in a material and excitons in amolecule and, in addition, have applied an advanced simulation method to a surface. The first topic is a replica exchange Monte
Carlo sampling of defects in a solid, which has not been tried previously in the literature but has proven to be unexpectedly
efficient. The second topic is on our progress in improving the efficiency of the Green's functional approach, which makes it
possible to simulate up to 200 atoms exceeding most of our target systems. The third topic is on the problem of resolving thehydrogen adsorption on Pt(111) surface. By using an advanced exchange-correlation functional, it was finally revealed how
strongly and at which site hydrogen atoms are adsorbed on the surface. This is an important step for true understanding thewater splitting and fuel cell reactions.
1.

* 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.

2.

Optical properties of six isomers of three dimensionally delocalizedπ-conjugated carbon nanocage: Y. Noguchi,
D. Hirose and O. Sugino, Eur. Phys. J. B 91 (2018) 125.

3.

*Discovery of 2D Anisotropic Dirac Cones: B. Feng, J. Zhang, S. Ito, M. Arita, C. Cheng, L. Chen, K. Wu, F. Komori,

4.

First-principles investigation of polarization and ion conduction mechanisms in hydroxyapatite: S. Kasamatsu andO. Sugino, Phys. Chem. Chem. Phys. 20 (2018) 8744.

5.

†Hydrogen6.

Direct coupling of first-principles calculations with replica exchange Monte Carlo sampling of ion disorder in solids:
S. Kasamatsu and O. Sugino, J. Phys.: Condens. Matter 31 (2019) 085901.

O. Sugino, K. Miyamoto, T. Okuda, S. Meng and I. Matsuda, Adv. Mater. 30 (2018) 1704025 (1-6).

adsorption on Pt(111) revisited from random phase approximation: L. Yan, Y. Sun, Y. Yamamoto,
S. Kasamatsu, I. Hamada and O. Sugino, The Journal of Chemical Physics 149 (2018) 164702.

Inoue group
In 2018, we reported a new machine learning method to estimate the absorption wavelengths of microbial rhodopsins from theirprimary sequences, based on a newly constructed database of previously reported and unreported absorption maxima of microbial rhodopsins and their mutants. The chromophore structure in newly discovered heliorhodopsin was studied by international
joint research.
1.

Resonance Raman Investigation of the Chromophore Structure of Heliorhodopsins: A. Otomo, M. Mizuno, M. Singh,
W. Shihoya, K. Inoue, O. Nureki, O. Béjà, H. Kandori and Y. Mizutani, J. Phys. Chem. Lett. 9 (2018) 6431-6436.

2.

Understanding Colour Tuning Rules and Predicting Absorption Wavelengths of Microbial Rhodopsins by Data-Driven
Machine-Learning Approach: M. Karasuyama, K. Inoue, R. Nakamura, H. Kandori and I. Takeuchi, Sci. Rep. 8 (2018)
15580.

3.

Ultrafast Dynamics of Heliorhodopsins: S. Tahara, M. Singh, H. Kuramochi, W. Shihoya, K. Inoue, O. Nureki, O. Béjà,
Y. Mizutani, H. Kandori and T. Tahara, J. Phys. Chem. B 123 (2019) 2507-2512.

4.

Casting Light on Asgardarchaeota Metabolism in a Sunlit Microoxic Niche: P. -A. Bulzu, A. -S. Andrei, M. M. Salcher,
M. Mehrshad, K. Inoue, H. Kandori, O. Béjà and R. Ghai, (2019), in print.
* Joint research among groups within ISSP.

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ISSP Activity Report 20185.

Heliorhodopsins are Absent in Diderm (Gram-negative) Bacteria: Some Thoughts and Possible Implications for
Activity: J. Flores-Uribe, G. Hevroni, R. Ghai, A. Pushkarev, K. Inoue, H. Kandori and O. Béjà, Environ. Microbiol.
Rep. (2019), in print.

Quantum Materials Group
Oshikawa group
We studied a variety of problems in quantum condensed matter physics, statistical mechanics, and field theory. In particular,
we studied the electronic structure of α-ZrCl3. Under the ligand field splitting and a strong spin-orbit interaction, each Zr3+ has
one electron each in the J=3/2 quartet states. The strong anisotropy of d-orbitals leads to highly orbital- and direction-dependent hoppings. Nevertheless, we found that, after an appropriate gauge transformation, the effective model has a global SU(4)symmetry which corresponds to the simultaneous complex rotation of the quartet states. In the presence of a strong Coulomb
repulsion, the system would be described by the SU(4) antiferromagnetic "Heisenberg" model on a honeycomb lattice, which
is predicted to have a gapless spin liquid state. This suggests an intriguing possibility of realizing a SU(4) spin-orbital liquid, inwhich spin and orbital degrees of freedom of a magnetic material are intertwined.
1.

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).

2.

†Particle statistics, frustration, and ground-state energy: W. Nie, H. Katsura and M. Oshikawa, Phys. Rev. B 97 (2018)125153 (1-17).
3.

Scaling of the polarization amplitude in quantum many-body systems in one dimension: R. Kobayashi, Y. O. Nakagawa,Y. Fukusumi and M. Oshikawa, Phys. Rev. B 97 (2018) 165133 (1-14).

4.

†Unified understanding of symmetry indicators for all internal symmetry classes: S. Ono and H. Watanabe, Phys. Rev. B

5.

†Emergent SU(4) Symmetry in α-ZrCl

6.

光渦レーザーによる磁性制御の展望 : 藤田 浩之 , 佐藤 正寛 , 固体物理 53, 10 (2018) 1-15.

7.

光渦レーザーによる超高速ナノスピン構造制御 : 佐藤 正寛 , 藤田 浩之 , 光学 47, 4 (2018) p162-.

8.

量子情報と統計力学 ( 特集 量子情報と物理学のフロンティア ): 押川 正毅 , 数理科学 56(6) (2018) 23-29.

9.

†Inequivalent Berry Phases for the Bulk Polarization: H. Watanabe and M. Oshikawa, Phys. Rev. X 8 (2018) 021065

98 (2018) 115150.

3 and Crystalline Spin-Orbital Liquids: M. G. Yamada, M. Oshikawa and
G. Jackeli, Phys. Rev. Lett. 121 (2018) 097201 (1-6).

(1-15).
10. Fulde-Ferrell state in a ferromagnetic chiral superconductor with magnetic domain walls: Y. Tada, Physical Review B 97(2018) 014519.
11. Decay of superconducting correlations for gauged electrons in dimensions D <= 4: Y. Tada and T. Koma, Journal of
Mathematical Physics 59 (2018) 031905.
12. †Crossover of correlation functions near a quantum impurity in a Tomonaga-Luttinger liquid: C.-Y. Lo, Y. Fukusumi,
M. Oshikawa, Y.-J. Kao and P. Chen, Phys. Rev. B 99 (2019) 121103.

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 2018. (1) We found one ordermagnitude higher anomalous Nernst effect in Co2MnGa, in comparison with the previously reported value for ferromagnets,
ascribable to the quantum Lifshitz transition between type-I and type-II Weyl fermions (2) We have succeeded in growing ahigh-quality thin film of magnetic Weyl semimetal Mn3Sn that exhibits anomalous Hall effect by a sputtering method. (3) ourrecent study on Mn3Sn has revealed a new type of spin Hall effect, whose sign and magnitude can be controlled by magnetization for the first time (4) We found a spin ice state with significant quantum fluctuations, namely, a quantum spin ice statein Pr2Zr2O7. (5) We established the thin film growth method of the Luttinger semimetal state of Pr2Ir2O7 and reported straininduced Weyl semimetal state in using the thin films.

† Joint research with outside partners.

ISSP Activity Report 2018

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1.

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.

2.

Spin-orbital entangled liquid state in the copper oxide Ba3CuSb2O9: H. Man, M. Halim, H. Sawa, M. Hagiwara,
Y. Wakabayashi and S. Nakatsuji, J. Phys.: Condens. Matter 30 (2018) 443002.

3.

Crystal Structure in Quadrupolar Kondo Candidate PrTr2Al20(Tr = Ti and V): D. Okuyama, M. Tsujimoto,
H. Sagayama, Y. Shimura, A. Sakai, A. Magata, S. Nakatsuji and T. J. Sato, J. Phys. Soc. Jpn. 88 (2018) 015001.

4.

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, J. Phys. Soc. Jpn. 87 (2018) 064702.

5.

*Kondo hybridization and quantum criticality in β−YbAlB by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama,
4
K. Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).

6.

Relaxation calorimetry at very low temperatures for systems with internal relaxation: Y. Matsumoto and S. Nakatsuji,
Rev. Sci. Instrum. 89 (2018) 033908.

7.

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.

8.

*Anomalous Hall effect in thin films of the Weyl antiferromagnet Mn Sn: T. Higo, D. Qu, Y. Li, C. L. Chien, Y. Otani
39.

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.

and S. Nakatsuji, Appl. Phys. Lett. 113 (2018) 202402.

10. *Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal: A. Sakai, Y. P. Mizuta, A. A.
Nugroho, R. Sihombing, T. Koretsune, M.-T. Suzuki, N. Takemori, R. Ishii, D. Nishio-Hamane, R. Arita, P. Goswami
and S. Nakatsuji, Nature Phys. 14 (2018) 1119-1124.
11. *Universal geometric frustration in pyrochlores: B. A. Trump, S. M. Koohpayeh, K. J. T. Livi, J. -J. Wen, K. E. Arpino,
Q. M. Ramasse, R. Brydson, M. Feygenson, H. Takeda, M. Takigawa, K. Kimura, S. Nakatsuji, C. L. Broholm andT. M. McQueen, Nat. Commun. 9 (2018) 2619 (1-10).
12. *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.
13. Elastic anomalies associated with two successive transitions of PrV2Al20 probed by ultrasound measurements: Y.
Nakanishi, M. Taniguchi, M. M. Nakamura, J. Hasegawa, R. Ohyama, M. Nakamura, M. Yoshizawa, M. Tsujimoto and
S. Nakatsuji, Physica B: Condensed Matter 536 (2018) 125.
14. †*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).
15. †*Large enhancement of the spin Hall effect in Mn metal by Sn doping: D. Qu, T. Higo, T. Nishikawa, K. Matsumoto,
K. Kondou, D. Nishio-Hamane, R. Ishii, P. K. Muduli, Y. Otani and S. Nakatsuji, Phys. Rev. Materials 2 (2018) 102001.
16. トポロジーを利用した反強磁性スピントロニクスとエネルギーハーベスティング : 中辻 知 , まぐね /Magnetics Japan 13 No.5
(2018) 216-222.
17. ワイル磁性体 Mn3Sn における巨大な異常ネルンスト効果 : 冨田 崇弘 , 日本磁気学会 第 217 回研究会資料 (2018) 23-28.
18. Evaluation of spin diffusion length and spin Hall angle of antiferromagnetic Weyl semimetal Mn3Sn: P. K. Muduli,
T. Higo, T. Nishikawa, D. Qu, H. Isshiki, K. Kondou, D. Nishio-Hamane, S. Nakatsuji and Y. Otani, Phys. Rev. B 99
(2019) 184425.
19. 反強磁性体において実現した室温での巨大異常ネルンスト効果 - 磁気ワイルフェルミオンが織りなすトポロジカル現象 : 冨田
崇弘 , 肥後 友也 , 中辻 知 , 固体物理 54 (2019) 85-99.

* Joint research among groups within ISSP.

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20. *Magnetic and magnetic inverse spin Hall effects in a non-collinear antiferromagnet: M. Kimata, H. Chen, K. Kondou,
S. Sugimoto, P. K. Muduli, M. Ikhlas, Y. Omori, T. Tomita, A. H. MacDonald, S. Nakatsuji and Y. Otani, Nature 565(2019) 627.
21. Energy harvesting materials based on the anomalous Nernst effect: M. Mizuguchi and S. Nakatsuji, Sci. Technol. Adv.
Mater. 20 (2019) 262-275.
22. *Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal: T. Ohtsuki, Z. Tian, A. Endo,
M. Halim, S. Katsumoto, Y. Kohama, K. Kindo, M. Lippmaa and S. Nakatsuji, Proc. Natl. Acad. Sci. USA 116 (2019)8803-8808.
23. 量子効果で 10 倍以上の磁気熱電効果を室温で実現 : 酒井 明人 , 中辻 知 , クリーンエネルギー 28 (2019) 34-38.
24. ワイル反強磁性体 Mn3Sn における巨大な磁気光学カー効果と拡張磁気八極子ドメインの直接観測 : 肥後 友也 , J-Physics#7 (2019) 94.
25. ワイル磁性体 Co2MnGa における室温巨大異常ネルンスト効果 : 酒井 明人 , J-Physics 07 (2019) 47-49.
26. Giant anisotropic magnetoresistance due to purely orbital rearrangement in the quadrupolar heavy fermion superconductor PrV2Al20: Y. Shimura, Q. Zhang, B. Zeng, D. Rhodes, R. Schönemann, M. Tsujimoto, Y. Matsumoto, A. Sakai, T.
Sakakibara, K. Araki, W. Zheng, Q. Zhou, L. Balicas and S. Nakatsuji, Phys. Rev. Lett. (2019), accepted for publication.

Miwa group
We have studied following topics in this year: (1) Voltage-controlled magnetic anisotropy using interface-controlled tunnel
junction, (2) Spin-to-charge conversion using metal/organic interface, and (3) Reservoir computing using spintronics devices.
In the topic (1), we have performed experiments using interface-controlled devices. For instance, we studied FeCoPtPd/MgO
junction with various composition ratio of the Co, Pt and Pd. Specifically, we performed tunnel spectroscopy to characterize thecorrelation between interface electronic states and the voltage-controlled magnetic anisotropy. As a result, we find that interface
resonant state enhances the voltage effect. We have also published a review paper on this topic. In the topic (2), we find that it isfeasible to obtain efficient inverse Rashba-Edelstein effect at an interface between copper and lead-phthalocyanine in collaboration with Otani group. In the topic (3), we performed both experimental and theoretical study to evaluate the figure-of-merit ofphysical reservoir computing using spintronics devices.
1.

Voltage-Controlled Magnetic Anisotropy in Fe1−xCox/Pd/MgO system: A. K. Shukla, M. Goto, X. Xu, K. Nawaoka,
J. Suwardy, T. Ohkubo, K. Hono, S. Miwa and Y. Suzuki, Sci Rep 8 (2018) 10362 (1-6).

2.

Quantitative and systematic analysis of bias dependence of spin accumulation voltage in a nondegenerate Si-based spin
valve: S. Lee, F. Rortais, R. Ohshima, Y. Ando, S. Miwa, Y. Suzuki, H. Koike and M. Shiraishi, Phys. Rev. B 99 (2019)064408 (1-6).

3.

Voltage-controlled magnetic anisotropy and Dzyaloshinskii−Moriya interactions in CoNi/MgO and CoNi/Pd/MgO:
J. Suwardy, M. Goto, Y. Suzuki and S. Miwa, Jpn. J. Appl. Phys. 58 (2019) 060917 (1-4).

4.

Magnetic anisotropy of ferromagnetic metals in low-symmetry systems: Y. Suzuki and S. Miwa, Physics Letters A 383(2019) 1203-1206.

5.

Perpendicular magnetic anisotropy and its electric-field-induced change at metal-dielectric interfaces: S. Miwa,
M. Suzuki, M. Tsujikawa, T. Nozaki, T. Nakamura, M. Shirai, S. Yuasa and Y. Suzuki, J. Phys. D: Appl. Phys. 52 (2019)063001 (1-22).

Materials Design and Characterization Laboratory
Hiroi groupWe revisit the superconducting pyrochlore oxide Cd2Re2O7 with a particular emphasis on the sample-quality issue. The
compound has drawn attention as the only superconductor (Tc = 1.0 K) that has been found in the family of α-pyrochlore oxides
since its discovery in 2001. Moreover, it exhibits two characteristic structural transitions from the cubic pyrochlore structure,with the inversion symmetry broken at the first one at 200 K. 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 inversion-symmetry breaking and parity-mixing superconductivity. We show that a synthetic copper mineral, Cd-kapellasite, which comprises a kagomé lattice consisting of corner-sharing triangles of spin-1/2 Cu2+ ions, exhibits an unprecedented† Joint research with outside partners.

ISSP Activity Report 2018171

series of fractional magnetization plateaus in ultrahigh magnetic fields of up to 160 T. We propose that these quantum states canbe interpreted as crystallizations of emergent magnons localized on the hexagon of the kagomé lattice.
1.

*Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO under High Pressure: K. Oka,
3
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).

2.

*Formation and Control of Twin Domains in the Pyrochlore Oxide Cd Re O : Y. Matsubayashi, D. Hirai, M. Tokunaga
2 2 7

3.

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice:
R. Okuma, T. Yajima, T. Fujii, M. Takano and Z. Hiroi, J. Phys. Soc. Jpn. 87 (2018) 093702.

4.

*Inelastic Neutron Scattering Study of the Spin Dynamics in the Breathing Pyrochlore System LiGa

0.95In0.05Cr4O8:
Y. Tanaka, R. Wawrzynczak, M. D. Le, T. Guidi, Y. Okamoto, T. Yajima, Z. Hiroi, M. Takigawa and G. J. Nilsen,
J. Phys. Soc. Jpn. 87 (2018) 073710.

5.

†*Improvement of coercivity in Nd-Fe-B nanocomposite magnets: T. Saito, S. Nozaki and D. Nishio-Hamane, J. Magn.

6.

*Devil's staircase of odd-number charge order modulations in divalent β-vanadium bronzes under pressure: T. Yamauchi,

7.

*Frustrated magnetism of the maple-leaf-lattice antiferromagnet MgMn O ·3H O: Y. Haraguchi, A. Matsuo, K. Kindo
3 7
2

8.

*Magnetic state selected by magnetic dipole interaction in the kagome antiferromagnet NaBa Mn F : S. Hayashida,
3 11
2and Z. Hiroi, J. Phys. Soc. Jpn. 87 (2018) 104604 (1-7).

Magn. Mater. 445 (2018) 49-52.

H. Ueda, K. Ohwada, H. Nakao and Y. Ueda, Phys. Rev. B 97 (2018) 125138.
and Z. Hiroi, Phys. Rev. B 98 (2018) 064412 (1-7).

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).
9.

†*Kannanite, a new mineral from Kannan Mountain, Japan: D. NISHIO–HAMANE, M. NAGASHIMA, N. OGAWA

and T. MINAKAWA, Journal of Mineralogical and Petrological Sciences 113 (2018) 245.

10. †*High-coercivity SmCo5/α-Fe nanocomposite magnets: T. Saito and D. Nishio-Hamane, J. Alloys Compd. 735 (2018)
218-223.
11. *Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal: A. Sakai, Y. P. Mizuta, A. A.
Nugroho, R. Sihombing, T. Koretsune, M.-T. Suzuki, N. Takemori, R. Ishii, D. Nishio-Hamane, R. Arita, P. Goswami
and S. Nakatsuji, Nature Phys. 14 (2018) 1119-1124.
12. 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).
13. †*Synthesis of anti-perovskite-type carbides and nitrides from metal oxides and melamine: D. Hirai, H. Tanaka,
D. Nishio-Hamane and Z. Hiroi, RSC Adv. 8 (2018) 42025.
14. †*Magnetic and thermoelectric properties of melt-spun ribbons of Fe 2 XAl (X = Co, Ni) Heusler compounds: T. Saito
and D. Nishio-Hamane, Journal of Applied Physics 124 (2018) 075105.
15. †*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).
16. †*Large enhancement of the spin Hall effect in Mn metal by Sn doping: D. Qu, T. Higo, T. Nishikawa, K. Matsumoto,
K. Kondou, D. Nishio-Hamane, R. Ishii, P. K. Muduli, Y. Otani and S. Nakatsuji, Phys. Rev. Materials 2 (2018) 102001.
17. †*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 309 (2018) 109.
18. †*Transmission electron microscopy study of the epitaxial association of hedenbergite whiskers with babingtonite:
M. Nagashima and D. Nishio-Hamane, Mineral. mag. 82 (2018) 23.
19. †*Aurihydrargyrumite, a Natural Au6Hg5 Phase from Japan: D. Nishio-Hamane, T. Tanaka and T. Minakawa, Minerals
8 (2018) 415.

* Joint research among groups within ISSP.

172

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20. †*Ionic Liquid Immobilized on Graphene-Oxide-Containing Palladium Metal Ions as an Efficient Catalyst for the
Alkoxy, Amino, and Phenoxy Carbonylation Reactions: V. V. Gaikwad, V. B. Saptal, K. Harada, T. Sasaki, D. NishioHamane and B. M. Bhanage, ChemNanoMat 4 (2018) 575.
21. One-dimensionalization by Geometrical Frustration in the Anisotropic Triangular Lattice of the 5d Quantum Antiferromagnet Ca3ReO5Cl2: D. Hirai, K. Nawa, M. Kawamura, T. Misawa and Z. Hiroi, J. Phys. Soc. Jpn. 88 (2019) 044708.
22. Crystal structure and magnetic properties of the 5dtransition metal oxides AOsO4 (A = K, Rb, Cs): J.-I. Yamaura and
Z. Hiroi, Phys. Rev. B 99 (2019) 155113.
23. †*Magnetoelastic couplings in the deformed kagome quantum spin lattice of volborthite: A. Ikeda, S. Furukawa,
O. Janson, Y. H. Matsuda, S. Takeyama, T. Yajima, Z. Hiroi and H. Ishikawa, Phys. Rev. B 99 (2019) 140412(R) 1-5.
24. * カゴメ銅鉱物ボルボサイトにおける軌道転移とフラストレート磁性 : 広井 善二 , 石川 孟 , 小濱 芳允 , 固体物理 54 (2019)117-130.
25. Weak Anisotropic Lithium-Ion Conductivity in Single Crystals of Li10GeP2S12: R. Iwasaki, S. Hori, R. Kanno,
T. Yajima, D. Hirai, Y. Kato and Z. Hiroi, Chem. Mater. 31 (2019) 3694.
26. *A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet: R. Okuma,
D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama and Z. Hiroi,
Nature Communications 10 (2019) 1229(7).
27. *Possible observation of quantum spin-nematic phase in a frustrated magnet: Y. Kohama, H. Ishikawa, A. Matsuo,
K. Kindo, N. Shannon and Z. Hiroi, Proc. Nat. Acad. Sci. U.S.A. 116 (2019) 10686-10690.
28. *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.
29. Weak Anisotropic Lithium-Ion Conductivity in Single Crystals of Li10GeP2S12: R. Iwasaki, S. Hori, R. Kanno,
T. Yajima, D. Hirai, Y. Kato and Z. Hiroi, Chem. Mater. (2019) acs.chemmater.9b00420, in print.

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 2018 include: (1) tensor-network study of frustrated
quantum spin systes, such as S=1 bilinear-biquadratic model and kagome antiferromagnet, and comparison with experimental
results, (2) efficient implementation of real-space renormalization group in tensor-network representation, (3) moleculardynamics simulation of complex fluids, and (4) Monte Carlo simulation study classical statistical mechanical models.
1.

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).

2.

Spin-one bilinear-biquadratic model on a star lattice: H.-Y. Lee* and N. Kawashima, Phys. Rev. B 97 (2018) 205123(1-7).

3.

*Spin Thermal Hall Conductivity of a Kagome Antiferromagnet: H. Doki, M. Akazawa, H.-Y. Lee, J. H. Han, K. Sugii,

M. Shimozawa, N. Kawashima, M. Oda, H. Yoshida and M. Yamashita, Phys. Rev. Lett. 121 (2018) 097203.

4.

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).

5.

How to experimentally probe universal features of absorbing phase transitions using steady state: K. Tamai and
M. Sano, J. Stat. Mech. 2018 (2018) 123207 (24pages).

6.

†*Polymer effects on Kármán vortex: Molecular dynamics study: Y. Asano, H. Watanabe and H. Noguchi, The Journal of7.

Stability of velocity-Verlet- and Liouville-operator-derived algorithms to integrate non-Hamiltonian systems:
H. Watanabe, The Journal of Chemical Physics 149 (2018) 154101(1-10).

8.

Fast Algorithm for Generating Random Bit Strings and Multispin Coding for Directed Percolation: H. Watanabe,
S. Morita, S. Todo and N. Kawashima, J. Phys. Soc. Jpn. 88 (2019) 024004 (8pages).

9.

Calculation of higher-order moments by higher-order tensor renormalization group: S. Morita and N. Kawashima,
Computer Physics Communications 236 (2019) 65-71.

Chemical Physics 148 (2018) 144901.

† Joint research with outside partners.

ISSP Activity Report 2018173

10. *SIMD vectorization for the Lennard-Jones potential with AVX2 and AVX-512 instructions: H. Watanabe and K. M.
Nakagawa, Computer Physics Communications 237 (2019) 1-7.
11. *A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet: R. Okuma,
D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama and Z. Hiroi,
Nature Communications 10 (2019) 1229(7).

Uwatoko groupWe report a high-pressure study on the heavily electron doped Li0.36(NH3)yFe2Se2 single crystal by using a cubic anvil cell
apparatus. The superconducting transition temperature Tc≈44K at ambient pressure is first suppressed to below 20 K uponincreasing pressure to Pc≈2GPa, above which the pressure dependence of Tc(P) reverses and Tc increases steadily to ca. 55 K at
11 GPa. These results thus evidence a pressure-induced second high-Tc superconducting (SC-II) phase in Li0.36(NH3)yFe2Se2
with the highest Tmaxc≈55K among the FeSe-based bulk materials. We report two distinct superconducting states with different
crystal structures and a crossover from a type-II to a type-I superconductor (SC) in (Ba,Sr)Bi3. The superconducting parameters
are revealed to classify two SCs: BaBi3 is in the weak-coupling limit on the basis of ΔC/γnTc∼0.67 and 2Δ/kBTc∼3.28 while
SrBi3 is a strong-coupling SC with ΔC/γnTc∼2.41 and 2Δ/kBTc∼6.09. With increasing the pressure, the Tc of BaBi3 decreases
linearly at first, and then shows an abrupt increase up to 6.2 K at 0.88 GPa. Tc of SrBi3 is suppressed monotonously by pressure.
Possible physical mechanisms are proposed. The coexistence of superconductivity (SC) and charge density waves (CDWs) wasinvestigated for pure and Se-doped 1T−TaS2 via electrical resistivity under hydrostatic pressure. A pressure-induced superconducting state coexists with various CDWs, then bulk SC emerges along with the complete collapse of various CDWs. The superconducting transition temperature increases monotonously up to ∼7.3K at 15 GPa without a domelike shape. The results clarify
that the superconducting Cooper pairing is associated with the CDWs’ instability near Pc(x). The electrical resistivity andmagnetization of a single crystal of Ce2Ni3Ge5 heavy fermion compound were performed under pressure. On applying pressure,the two antiferromagnetic transitions merged at 1 GPa. At higher pressures, the antiferromagnetic transition temperature
decreases, and disappears. It is suggesting that the critical pressure of Ce2Ni3Ge5 was 4.1 GPa. Polarized neutron analyses on
MnP were applied to two different helical magnetic structures (helical-c and helical-b). Helicity was observed in the both structures. The two helical domain ratio becomes more unbalanced in the helical-b structure at a higher pressure, suggesting that the
Dzyaloshinskii-Moriya interaction, which is enhanced by a local structural strain, could be related with the helical structures.
1.

†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).
2.

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).

3.

†Direct Observation of the Quantum Phase Transition of SrCu (BO ) by High-Pressure and Terahertz Electron Spin2
3 2

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).

4.

†Effects

5.

†Electronic

6.

*Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO under High Pressure: K. Oka,
3

7.

†Pressure Effect on Magnetic Properties of Weak Itinerant Electron Ferromagnet CrAlGe: S. Yoshinaga, Y. Mitsui, R. Y.

8.

†Structural, Magnetic, and Transport Properties of Novel Quaternary Compounds RRu Sn Zn (R= La, Pr, and Nd):
2 2 18of Magnetic Field and Pressure on the Valence-Fluctuating Antiferromagnetic Compound EuPt2Si2:
T. Takeuchi, T. Yara, Y. Ashitomi, W. Iha, M. Kakihana, M. Nakashima, Y. Amako, F. Honda, Y. Homma, D. Aoki,
Y. Uwatoko, T. Kida, T. Tahara, M. Hagiwara, Y. Haga, M. Hedo, T. Nakama and Y. Onuki, J. Phys. Soc. Jpn. 87 (2018)074709 (1-14).
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).
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).
Umetsu, Y. Uwatoko and K. Koyama, J. Phys. Soc. Jpn. 87 (2018) 014701 (1-4).

K. Wakiya, Y. Sugiyama, M. Kishimoto, T. D. Matsuda, Y. Aoki, M. Uehara, J. Gouchi, Y. Uwatoko and I. Umehara,
J. Phys. Soc. Jpn. 87 (2018) 094706 (1-6).
9.

Time and Magnetic Field Variations of Magnetic Structure in the Triangular Lattice Magnet Ca3Co2O6: K. Motoya,
T. Kihara, H. Nojiri, Y. Uwatoko, M. Matsuda and T. Hong, J. Phys. Soc. Jpn. 87 (2018) 114703 (1-11).

* Joint research among groups within ISSP.

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10. 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).
11. †Pressure effect on the magnetic properties of the half-metallic Heusler alloy Co 2TiSn: 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).
12. *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).
13. Two distinct superconducting phases and pressure-induced crossover from type-II to type-I superconductivity in the
spin-orbit-coupled superconductors BaBi3 and SrBi3: B. Wang, X. Luo, K. Ishigaki, K. Matsubayashi, J. Cheng, Y. Sun
and Y. Uwatoko, Phys. Rev. B 98 (2018) 220506.
14. Universal phase diagram of superconductivity and charge density wave versus high hydrostatic pressure in pure andSe-doped 1T−TaS2: B. Wang, Y. Liu, X. Luo, K. Ishigaki, K. Matsubayashi, W. Lu, Y. Sun, J. Cheng and Y. Uwatoko,
Phys. Rev. B 97 (2018) 220504 (1-7).
15. †Magnetocaloric effect in single-crystal HoNi with a canted magnetic structure: N. Kinami, K. Wakiya, M. Uehara,
J. Gouchi, Y. Uwatoko and I. Umehara, Jpn. J. Appl. Phys. 57 (2018) 103001 (1-4).
16. †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).
17. †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.
18. †Anomalous pressure effect on the Nèel temperature and volume of DyB 6: T. Eto, G. Oomi, T. Sakai, Y. Uwatoko and
S. Kunii, AIP Advances 8 (2018) 101320 (1-5).
19. †Cu-substitution effects on the magnetic properties of weak itinerant electron ferromagnet CrAlGe: H. Masumitsu,
S. Yoshinaga, Y. Mitsui, R. Y. Umetsu, M. Hiroi, Y. Uwatoko and K. Koyama, AIP Advances 8 (2018) 101426 (1-5).
20. †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.
21. †Magnetic and transport properties of single crystalline RCoxSn2 (R= Ce and La): M. Kimura, K. Wakiya, T. Tomaki,
J. Gouchi, Y. Uwatoko, M. Uehara and I. Umehara, AIP Advances 8 (2018) 101304 (1-5).
22. †Magnetic characteristics of RPd2Si2 (R = Rare earth): K. Uchima, Y. Uwatoko and T. Shigeoka, AIP Advances 8 (2018)
101425 (1-6).
23. †Magnetic fluctuations under pressure on S-doped FeSe studied via 77Se NMR: T. Kuwayama, K. Matsuura,
Y. Mizukami, S. Kasahara, Y. Matsuda, T. Shibauchi, Y. Uwatoko and N. Fujiwara, AIP Advances 8 (2018) 101308(1-6).
24. †Magnetic properties of Mn1-xTMxAlGe (TM = V, Fe, Cu) with Cu2Sb-type structure: K. Noguchi, H. Masumitsu,
Y. Mitsui, R. Y. Umetsu, M. Hiroi, Y. Uwatoko and K. Koyama, AIP Advances 8 (2018) 101433 (1-5).
25. Metal-insulator transition in Mott-insulator FePS3: M. Tsurubayashi, K. Kodama, M. Kano, K. Ishigaki, Y. Uwatoko,
T. Watanabe, K. Takase and Y. Takano, AIP Advances 8 (2018) 101307 (1-4).
26. Pressure effect on the antiferromagnetic compound Ce2Ni3Ge5: J. Gouchi, Y. Nakamura, M. Nakashima, Y. Amako,
R. Kumar and Y. Uwatoko, AIP Advances 8 (2018) 101323 (1-5).
27. 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).
28. *Evolution of Magnetic Double Helix and Quantum Criticality near a Dome of Superconductivity in CrAs: M. Matsuda,
F. K. Lin, R. Yu, J.-G. Cheng, W. Wu, J. P. Sun, J. H. Zhang, P. J. Sun, K. Matsubayashi, T. Miyake, T. Kato, J.-Q. Yan,
M. B. Stone, Q.-M. Si, J. L. Luo and Y. Uwatoko, Phys. Rev. X 8 (2018) 031017 (1-12).
29. †Anisotropic lattice compression of α- and β-CePdZn: G. Oomi, T. Eto, T. Okada and Y. Uwatoko, Physica
B: Condensed Matter 536 (2018) 293.

† Joint research with outside partners.

ISSP Activity Report 2018175

30. †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.
31. †Magnetic characteristics of polymorphic single crystal compounds DyIr2Si2: K. Uchima, T. Shigeoka and Y. Uwatoko,
Physica B: Condensed Matter 536 (2018) 28.
32. †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.
33. †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.
34. Polarized neutron diffraction study in helical magnetic phases of MnP: M. Matsuda, S. E. Dissanayake, J. -G. Cheng,
J. Ma, J. -Q. Yan and Y. Uwatoko, Physica B: Condensed Matter 551 (2018) 115-117.
35. †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.
36. †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.
37. Pressure-induced coherent sliding-layer transition in the excitonic insulator Ta2NiSe5: 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.
38. †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.
39. †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.
40. 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.
41. Cubic anvil cell apparatus for high-pressure and low-temperature physical property measurements: J.-G. Cheng, B.-S.
Wang, J.-P. Sun and Y. Uwatoko, Chinese Phys. B 27 (2018) 077403 (1-7).
42. Pressure-induced phase transitions and superconductivity in a black phosphorus single crystal: X. Li, J. Sun, P. Shahi,
M. Gao, A. H. MacDonald, Y. Uwatoko, T. Xiang, J. B. Goodenough, J. Cheng and J. Zhou, Proc Natl Acad Sci USA
115 (2018) 9935.
43. Effect of pressure on the self-hole-doped superconductor RbGd2Fe4As4O2: J. P. Sun, Z.-C. Wang, Z. Y. Liu, S. X. Xu,
T. Eto, Y. Sui, B. S. Wang, Y. Uwatoko, G.-H. Cao and J.-G. Cheng, J. Phys.: Condens. Matter 31 (2019) 044001 (1-7).
44. 77 Se-NMR Study under Pressure on 12%-S Doped FeSe: T. Kuwayama, K. Matsuura, Y. Mizukami, S. Kasahara,
Y. Matsuda, T. Shibauchi, Y. Uwatoko and N. Fujiwara, J. Phys. Soc. Jpn. 88 (2019) 033703.
45. Temperature–Pressure Phase Diagram of Antiferromagnet CeAl: R. Tsunoda, Y. Hirose, T. Koitabashi, Y. Sase,
R. Kulkarni, A. Thamizhavel, S. K. Dhar, J. Gouchi, Y. Uwatoko and R. Settai, J. Phys. Soc. Jpn. 88 (2019) 034707(1-5).
46. Exotic superconductivity in noncentrosymmetric and magnetic CeNiC2 revealed under high pressure: S. Katano, M. Ito,
K. Shibata, J. Gouchi, Y. Uwatoko, K. Matsubayashi, H. Soeda and H. Takahashi, Phys. Rev. B 99 (2019) 100501 (1-5).
47. Pressure-induced enhancement of superconductivity and quantum criticality in the 12442-type hybrid-structure superconductor KCa2F4As4F2: B. Wang, Z.-C. Wang, K. Ishigaki, K. Matsubayashi, T. Eto, J. Sun, J.-G. Cheng, G.-H. Caoand Y. Uwatoko, Phys. Rev. B 99 (2019) 014501 (1-6).
48. †Magnetic anisotropy of single-crystal ferromagnetic Ce3RuSn6: K. Wakiya, T. Tomaki, M. Kimura, M. Uehara,
J. Gouchi, Y. Uwatoko and I. Umehara, Journal of Magnetism and Magnetic Materials 471 (2019) 274-277.
49. †Anomalous ferromagnetic ordering in EuCuP: W. Iha, M. Kakihana, S. Matsuda, F. Honda, Y. Haga, T. Takeuchi,
M. Nakashima, Y. Amako, J. Gouchi, Y. Uwatoko, M. Hedo, T. Nakama and Y. Onuki, Journal of Alloys and Compounds
788 (2019) 361-366.

* Joint research among groups within ISSP.

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50. The effects of high pressure and superheating on the planar growth of Al3Ni phase in hypo-peritectic Al-30wt%Ni alloy:
X. H. Wang, H. W. Wang, C. M. Zou, Z. J. Wei, Y. Uwatoko, J. Gouchi, D. Nishio-Hamane and H. Gotou, Journal of
Alloys and Compounds 772 (2019) 1052-1060.
51. Enhancement of superconducting properties and flux pinning mechanism on Cr0.0005NbSe2 single crystal under Hydrostatic pressure: S. Arumugam, M. Krishnan, K. Ishigaki, J. Gouchi, R. Pervin, G. Kalai Selvan, P. M. Shirage andY. Uwatoko, Sci Rep 9 (2019) 347 (1-12).
52. Correction for Li et al., Pressure-induced phase transitions and superconductivity in a black phosphorus single crystal:
X. Li, J. Sun, P. Shahi, M. Gao, A. H. MacDonald, Y. Uwatoko, T. Xiang, J. B. Goodenough, J. Cheng and J. Zhou, Proc
Natl Acad Sci USA 116 (2019) 1065.
53. Nuanced superconductivity in endohedral gallide Mo8Ga41: P. Neha1, P. Sivaprakash, K. Ishigaki, G. Kalaiselvan,
K. Manikandan, R. S. Dhaka and Y. Uwatoko, Materials Research Express 6 (2019) 016002.

Ozaki group
In collaboration with experimental groups, we have investigated novel three kinds of surface structures and its electronic statesby means of first-principles electronic structure methods based on density functional theory (DFT). (i) We identified detailed
structures of two energetically competing root-13 x root-13 R13.9°silicene on Ag (111) surface which were recently revealedby scanning tunneling microscopy (STM) and atomic force microscopy (AFM). Simulations of AFM suggested that attractive
interaction with the tip pulls up buckled down Si atoms which causes local flips of the buckled structures, leading to an understanding of the mechanism of experimental high-resolution AFM imaging. (ii) In single-atom catalysis, the atomic structure andlocal electronic states of single atoms on a supporting material remain a fundamental question. We experimentally and theoretically solved these problems for single Pt atoms dispersed on freestanding graphene using plasma sputtering. First-principles
calculations elucidated that the Pt 5dxy-orbital in the step edge plays a crucial role in the formation of chemical bonds to C
atoms and in the considerable charge transfer from Pt to C atoms, resulting in the large binding energy shift of the Pt 4f state.
(iii) We showed that the B atoms deployed at the centers of honeycombs in boron sheets, borophene, behave as nearly perfectelectron donors for filling the graphiticσbonding states without forming additional in-plane bonds by first-principles calculations. It was confirmed from our the XPS binding energy calculations that the unusual energy sequence of core electrons in the
borophene, verified by our high-resolution core-level photoelectron spectroscopy measurements, is originated by the hidden
honeycomb bonding structure.
1.

Realization of intrinsically broken Dirac cones in graphene via the momentum-resolved electronic band structure: C.-C.
Lee, M. Fukuda, Y.-T. Lee and T. Ozaki, J. Phys.: Condens. Matter 30 (2018) 295502.

2.

Efficient O(N) divide-conquer method with localized single-particle natural orbitals: T. Ozaki, M. Fukuda and G. Jiang,
Phys. Rev. B 98 (2018) 245137.

3.

*Peculiar

4.

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.

5.

Structural identification of silicene on the Ag(111) surface by atomic force microscopy: L. Feng, K. Yabuoshi,
Y. Sugimoto, J. Onoda, M. Fukuda and T. Ozaki, Phys. Rev. B 98 (2018) 195311.

6.

Tight-binding calculations of optical matrix elements for conductivity using nonorthogonal atomic orbitals: Anomalous
Hall conductivity in bcc Fe: C.-C. Lee, Y.-T. Lee, M. Fukuda and T. Ozaki, Phys. Rev. B 98 (2018) 115115.

7.

*Atomic Structure and Local Electronic States of Single Pt Atoms Dispersed on Graphene: K. Yamazaki, Y. Maehara,

8.

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.

9.

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.

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).

C.-C. Lee, J. Yoshinobu, T. Ozaki and K. Gohara, J. Phys. Chem. C 122 (2018) 27292.

10. Transport properties of rocksalt-type cluster sulfides V4GeS8 and Mn substitution effect: M. Miyata, T. Ozaki and
M. Koyano, Jpn. J. Appl. Phys. 58 (2019) 061008.

† Joint research with outside partners.

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11. OpenMX Viewer: A web-based crystalline and molecular graphical user interface program: Y.-T. Lee and T. Ozaki,
Journal of Molecular Graphics and Modelling 89 (2019) 192.

Noguchi group
We have studied nonequilibrium dynamics of polymer solutions and bilayer membranes. We investigated Karman vortex inpolymer solution using molecular dynamics simulation. The polymer induces a reduction in the vortex shedding frequency
and broadening of the lift coefficient spectrum. We also investigated the shape transformation of vesicles induced by chemical
reactions. We revealed that the dynamics can be altered by the viscosity change in the membrane compared to the surrounding
fluids.
1.

Fracture Process of Double-Network Gels by Coarse-Grained Molecular Dynamics Simulation: Y. Higuchi, K. Saito,
T. Sakai, J. P. Gong and M. Kubo, Macromolecules 51 (2018) 3075.

2.

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.

3.

Fracture processes of crystalline polymers using coarse-grained molecular dynamics simulations: Y. Higuchi, Polym J
50 (2018) 579.

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（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.

5.

†*Polymer effects on Kármán vortex: Molecular dynamics study: Y. Asano, H. Watanabe and H. Noguchi, The Journal of

6.

Angular-momentum conservation in discretization of the Navier-Stokes equation for viscous fluids: H. Noguchi, Phys.
Rev. E 99 (2019) 023307.

7.

Limiting shapes of confined lipid vesicles: B. Kavcic, A. Sakashita, H. Noguchi and P. Ziherl, Soft Matter 15 (2019)602-614.

8.

*SIMD vectorization for the Lennard-Jones potential with AVX2 and AVX-512 instructions: H. Watanabe and K. M.

Chemical Physics 148 (2018) 144901.

Nakagawa, Computer Physics Communications 237 (2019) (1-7).

Materials Synthesis and Characterization group
1.

*Experimental and Theoretical Studies of the Metallic Conductivity in Cubic PbVO under High Pressure: K. Oka,
32.

†*Improvement of coercivity in Nd-Fe-B nanocomposite magnets: T. Saito, S. Nozaki and D. Nishio-Hamane, J. Magn.

3.

*Devil's staircase of odd-number charge order modulations in divalent β-vanadium bronzes under pressure: T. Yamauchi,

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.

H. Ueda, K. Ohwada, H. Nakao and Y. Ueda, Phys. Rev. B 97 (2018) 125138.

4.

†*Kannanite, a new mineral from Kannan Mountain, Japan: D. Nishio–Hamane, M. Nagashima, N. Ogawa and

5.

†*High-coercivity SmCo /α-Fe nanocomposite magnets: T. Saito and D. Nishio-Hamane, J. Alloys Compd. 735 (2018)5

T. Minakawa, Journal of Mineralogical and Petrological Sciences 113 (2018) 245.
218-223.

6.

*Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal: A. Sakai, Y. P. Mizuta, A. A.

Nugroho, R. Sihombing, T. Koretsune, M.-T. Suzuki, N. Takemori, R. Ishii, D. Nishio-Hamane, R. Arita, P. Goswami
and S. Nakatsuji, Nature Phys. 14 (2018) 1119-1124.
7.

†*Synthesis of anti-perovskite-type carbides and nitrides from metal oxides and melamine: D. Hirai, H. Tanaka,

8.

†*Magnetic and thermoelectric properties of melt-spun ribbons of Fe

D. Nishio-Hamane and Z. Hiroi, RSC Adv. 8 (2018) 42025.

2 XAl (X = Co, Ni) Heusler compounds: T. Saito

and D. Nishio-Hamane, Journal of Applied Physics 124 (2018) 075105.

* Joint research among groups within ISSP.

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9.

†*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).
10. †*Large enhancement of the spin Hall effect in Mn metal by Sn doping: D. Qu, T. Higo, T. Nishikawa, K. Matsumoto,
K. Kondou, D. Nishio-Hamane, R. Ishii, P. K. Muduli, Y. Otani and S. Nakatsuji, Phys. Rev. Materials 2 (2018) 102001.
11. †*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 309 (2018) 109.
12. †*Transmission electron microscopy study of the epitaxial association of hedenbergite whiskers with babingtonite:
M. Nagashima and D. Nishio-Hamane, Mineral. mag. 82 (2018) 23.
13. †*Aurihydrargyrumite, a Natural Au6Hg5 Phase from Japan: D. Nishio-Hamane, T. Tanaka and T. Minakawa, Minerals
8 (2018) 415.
14. †*Ionic Liquid Immobilized on Graphene-Oxide-Containing Palladium Metal Ions as an Efficient Catalyst for the
Alkoxy, Amino, and Phenoxy Carbonylation Reactions: V. V. Gaikwad, V. B. Saptal, K. Harada, T. Sasaki, D. NishioHamane and B. M. Bhanage, ChemNanoMat 4 (2018) 575.
15. †*S=1/2 ferromagnetic Heisenberg chain in a verdazyl-based complex: N. Uemoto, Y. Kono, S. Kittaka, T. Sakakibara,
T. Yajima, Y. Iwasaki, S. Miyamoto, Y. Hosokoshi and H. Yamaguchi, Phys. Rev. B 99 (2019) 094418 (1-6).
16. *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 2018 include investigations of (1) probe
diffusion of sol-gel transition in isorefractive indexed solvents, (2) microscopic structure of module-assembled thermoresponsive conetwork hydrogels, (3) diffusion behavior of methanol molecules confined in cross-linked phenolic resins, (4) structuremechanical property relationships in crosslinked phenolic resin, and (5) dynamics of thermoresponsive conetwork gels, and soon.
1.

Ion Gel Network Formation in an Ionic Liquid Studied by Time-Resolved Small-Angle Neutron Scattering: K. Hashimoto, K. Fujii, K. Nishi and M. Shibayama, J. Phys. Chem. B 122 (2018) 9419-9424.

2.

Dynamics of thermoresponsive conetwork gels composed of poly(ethylene glycol) and poly(ethyl glycidyl ether-comethyl glycidyl ether): M. Ohira, X. Li, C. I. Gupit, H. Kamata, T. Sakai and M. Shibayama, Polymer 155 (2018) 75-82.

3.

Two-dimensional scattering patterns and stress-strain relation of elongated clay nano composite gels: Molecular
dynamics simulation analysis: K. Hagita, Y. Shudo and M. Shibayama, Polymer 154 (2018) 62-79.

4.

Diffusion Behavior of Methanol Molecules Confined in Cross-Linked Phenolic Resins Studied Using Neutron
Scattering and Molecular Dynamics Simulations: Y. Shudo, A. Izumi, K. Hagita, T. Yamada, K. Shibata and
M. Shibayama, Macromolecules 51 (2018) 6334-6343.

5.

Dynamic Fluctuations of Thermoresponsive Poly(oligo-ethylene glycol methyl ether methacrylate)-Based Hydrogels
Investigated by Dynamic Light Scattering: T. Kureha, K. Hayashi, M. Ohira, X. Li and M. Shibayama, Macromolecules
51 (2018) 8932-8939.

6.

Insight into the Microscopic Structure of Module-Assembled Thermoresponsive Conetwork Hydrogels: S. Nakagawa,X. Li, M. Shibayama, H. Kamata, T. Sakai and E. P. Gilbert, Macromolecules 51 (2018) 6645-6652.

7.

Sulfonated Polyimide/Ionic Liquid Composite Membranes for CO2 Separation: Transport Properties in Relation to
Their Nanostructures: A. Ito, T. Yasuda, T. Yoshioka, A. Yoshida, X. Li, K. Hashimoto, K. Nagai, M. Shibayama andM. Watanabe, Macromolecules 51 (2018) 7112-7120.

† Joint research with outside partners.

ISSP Activity Report 2018

179

8.

Self-Healing Micellar Ion Gels Based on Multiple Hydrogen Bonding: R. Tamate, K. Hashimoto, T. Horii, M. Hirasawa,
X. Li, M. Shibayama and M. Watanabe, Adv. Mater. 30 (2018) 1802792 (1-7).

9.

Small-angle X-ray scattering study on nano-scale structures controlled by water content in a binary water/ionic liquid
system: K. Hashimoto, K. Fujii, T. Kusano, K. Hirosawa and M. Shibayama, Phys. Chem. Chem. Phys. 20 (2018)
18355-18360.

10. Gels: From Soft Matter to BioMatter: M. Shibayama, X. Li and T. Sakai, Ind. Eng. Chem. Res. 57 (2018) 1121-1128.
11. Small-angle scattering study of tetra-poly(acrylic acid) gels: K. Morishima, X. Li, K. Oshima, Y. Mitsukami and
M. Shibayama, The Journal of Chemical Physics 149 (2018) 163301 (1-8).
12. Molecular Dynamics Simulations of Cross-Linked Phenolic Resins Using a United-Atom Model: A. Izumi, Y. Shudo,
K. Hagita and M. Shibayama, Macromol. Theory Simul. 27 (2018) 1700103 (1-8).
13. Evaluation of Mesh Size in Model Polymer Networks Consisting of Tetra-Arm and Linear Poly(ethylene glycol)s:
Y. Tsuji, X. Li and M. Shibayama, Gels 4 (2018) 50.
14. Viscoelastic change of block copolymer ion gels in a photo-switchable azobenzene ionic liquid triggered by light:
C. Wang, K. Hashimoto, R. Tamate, H. Kokubo, K. Morishima, X. Li, M. Shibayama, F. Lu, T. Nakanishi and
M. Watanabe, Chem. Commun. 55 (2019) 1710-1713.
15. Network structure evolution of a hexamethylenetetramine-cured phenolic resin: A. Izumi, Y. Shudo and M. Shibayama,
Polym J 51 (2019) 155-160.
16. Chiral crystal-like droplets displaying unidirectional rotational sliding: T. Kajitani, K. Motokawa, A. Kosaka, Y. Shoji,
R. Haruki, D. Hashizume, T. Hikima, M. Takata, K. Yazawa, K. Morishima, M. Shibayama and T. Fukushima, Nature
Mater. 18 (2019) 266-272.
17. Precision polymer network science with tetra-PEG gels—a decade history and future: M. Shibayama, X. Li and
T. Sakai, Colloid Polym Sci 297 (2019) 1-12.
18. Rheo-SANS study on relationship between micellar structures and rheological behavior of cationic gemini surfactants insolution: H. Iwase, R. Kawai, K. Morishima, S.-I. Takata, T. Yoshimura and M. Shibayama, Journal of Colloid and Interface Science 538 (2019) 357-366.
19. Formation of Clusters in Whiskies During the Maturation Process: K. Morishima, N. Nakamura, K. Matsui, Y. Tanaka,
H. Masunaga, S. Mori, T. Iwashita, X. li and M. Shibayama, Journal of Food Science 84 (2019) 59-64.
20. 散乱を用いて不均一性を調べる : 柴山 充弘 , 高分子 67 (2018) 35-38.
21. 分子動力学シミュレーションを用いたフェノール樹脂の構造 機械特性発現メカニズムの解析 : 首藤 靖幸 , 和泉 篤士 , 萩田
克美 , 柴山 充弘 , ネットワークポリマー 39 (2018) 163-171.
22. 高強度ゲルから医療用ゲルまで : 柴山 充弘 , ソフトマター 1 (2018) 10-12.
23. Structure and Functions of Phenolic Resin: M. SHIBAYAMA, Y. SHUDO and A. IZUM, 日本接着学会誌 54 (2018)451-458.
24. 高強度イオンゲル膜を用いた CO2 分離 : 橋本 慧 , 藤井 健太 , 柴山 充弘 , ケミカルエンジニヤリング 64 (2019) 32-38.
25. Probe Diffusion Dynamic Light Scattering of Polymer solutions and Gels: M. Shibayama and X. Li, in: Gels andOther Soft Amorphous Solids, Ch 4, edited by F. Horkay, J. F. Douglas, E. Del Gado, (American Chemical Society,
Washington, D. C., 2018), 51–69.
26. 散乱法を用いた高分子ゲルの構造解析 : 柴山 充弘 ,「『刺激応答性高分子ハンドブック』基礎編 第 4 章 構造・物性解析 第 2 節」, 宮田隆志 , ( エヌ・ティー・エス , 東京 , 2018), 296-305.

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. In
this year, the synchrotron X-ray diffraction of glassy and liquid toluene (C6H5CH3) was measured following the previous works
on carbon disulfide (CS2), propane (CH3CH2CH3) and propene (CH3CHCH2). By means of the Reverse Monte Carlo (RMC)
method combining the molecular dynamics (MD) simulations, we found that the orientational correlation between neighboring molecules steeply increased on cooling below the melting temperature and was frozen at the glass transition temperature. Another topic is the inelastic neutron scattering of vapor-deposited glassy carbon tetrachloride (CCl4). We observed the* Joint research among groups within ISSP.

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ISSP Activity Report 2018

Q-dependence of the boson peak intensity and the dispersion-like phenomenon of acoustic phonons as observed in SiO2 glass,which is a typical covalent-bond network glass. Other than the above topics, we have conducted neutron diffraction experimentof the PdRu alloy nanoparticles supported on CZ (CeO2-ZrO2). This is a high-performance catalytic system for removing CO
and NOx gases. The pdf (pair-distribution function) analysis is now going on to investigate the atomic scale miscibility and local
structure of the alloy.
1.

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. 149 (2018) 054502 (1-11).

2.

Two inherent crossovers of the diffusion process in glass-forming liquids: M. Kofu, A. Faraone, M. Tyagi, M. Nagao
and O. Yamamuro, Phys. Rev. E 98 (2018) 042601 (1-6).

3.

Development of adiabatic calorimetry system for enthalpy of gas absorption/adsorption and its application to
H2/D2 absorption into palladium nanoparticles: H. Akiba, N. Hashimoto, M. Kofu, H. Kobayashi, H. Kitagawa andO. Yamamuro, Thermochimica Acta 670 (2018) 87-91.

4.

Neutron scattering studies of static and dynamic correlation lengths in alkali metal borate glasses: S. Kojima, V. N.
Novikov, M. Kofu and O. Yamamuro, Journal of Non-Crystalline Solids 518 (2019) 18-23.

5.

Structural and Thermodynamic Studies of Hydrogen Absorption/Desorption Processes on PdPt Nanoparticles: H. Akiba,
H. Kobayashi, H. Kitagawa, K. Ikeda, T. Otomo, T. Yamamoto, S. Matsumura and O. Yamamuro, J. Phys. Chem. C 123(2019) 9471.

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; magnetic order in the rare-earth ferroborate CeFe3(BO3)4, magnetic state selected by magnetic
dipole interaction in the kagome antiferromagnet NaBa2Mn3F11, polarization analysis of magnetic excitation in multiferroic
Ba2CoGe2O7, pressure-induced quantum phase transition in the quantum antiferromagnet CsFeCl3, neutron spin resonance inthe 112-type iron-based superconductor, crystal structure of magnetoelectric Ba2MnGe2O7 at room and low temperatures byneutron diffraction.
1.

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).

2.

f-Electron States in PrPd5Al2: N. Metoki, H. Yamauchi, H. S. Suzuki, H. Kitazawa, M. Hagihara, T. Masuda, A. A.
Aczel, S. Chi, T. Hong, M. Matsuda, D. Pajerowski and J. A. Fernandez-Baca, J. Phys. Soc. Jpn. 87 (2018) 094704(1-8).

3.

Magnetic order in the rare-earth ferroborate CeFe3 (BO3)4: S. Hayashida, S. Asai, D. Kato, S. Hasegawa, M. Avdeev,
H. Cao and T. Masuda, Phys. Rev. B 98 (2018) 224405 (1-9).

4.

*Magnetic state selected by magnetic dipole interaction in the kagome antiferromagnet NaBa Mn F : S. Hayashida,2
3 11

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).
5.

Polarization analysis of magnetic excitation in multiferroic Ba2CoGe2O7: M. Soda, L.-J. Chang, M. Matsumoto,
V. Ovidiu Garlea, B. Roessli, J. S. White, H. Kawano-Furukawa and T. Masuda, Phys. Rev. B 97 (2018) 214437 (1-6).

6.

*Pressure-induced quantum phase transition in the quantum antiferromagnet CsFeCl : S. Hayashida, O. Zaharko,
3

7.

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).

8.

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.

9.

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).

N. Kurita, H. Tanaka, M. Hagihala, M. Soda, S. Itoh, Y. Uwatoko and T. Masuda, Phys. Rev. B 97 (2018) 140405 (1-4).

† Joint research with outside partners.

ISSP Activity Report 2018181

10. YUI and HANA: control and visualization programs for HRC in J-PARC: D. Kawana, M. Soda, M. Yoshida, Y. Ikeda,
T. Asami, R. Sugiura, H. Yoshizawa, T. Masuda, T. Hawai, S. Ibuka, T. Yokoo and S. Itoh, J. Phys.: Conf. Ser. 1021
(2018) 012014 (1-4).
11. 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).
12. Magnetic structure of a non-centrosymmetric CePtSi3: D. Ueta, M. Yoshida, Y. Ikeda, Y. Liu, T. Hong, T. Masuda andH. Yoshizawa, AIP Advances 8 (2018) 115006 (1-5).
13. Progress in High Resolution Chopper Spectrometer HRC by improving collimator and Fermi chopper: S. Itoh, T. Yokoo,
T. Masuda, S. Asai, H. Saito, D. Kawana, R. Sugiura, T. Asami and Y. Ihata, Physica B: Condensed Matter 568 (2019)76-80.
14. Magnetic states of coupled spin tubes with frustrated geometry in CsCrF4: M. Hagihala, S. Hayashida, M. Avdeev,
H. Manaka, H. Kikuchi and T. Masuda, npj Quantum Mater. 4 (2019) 14 (1-9).

International MegaGauss Science Laboratory
Takeyama group1000 T-class megagauss generator system has been accomplished to be used for the electro-magnetic flux compression. The
system is comprised of 5 MJ and 2 MJ condenser modules, respectively, for a primary coil and 2 MJ condenser modules for theseed-magnetic field generation to be compressed. This project has started in 2010 supported by a budget from the MEXT. After
long-standing struggles over 10 years with serious difficulties in the construction processes, the instruments have been finallyaccomplished. We could break the world record of high-magnetic fields, 1200 T, of which value was successfully recorded by
the optical Faraday rotation technique with high precision and reliability.
1.

†* Ultrahigh-Magnetic-Field

2.

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).

3.

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. Technol. 29 (2018) 035901 (1-7).

4.

*Record indoor magnetic field of 1200 T generated by electromagnetic flux-compression: D. Nakamura, A. Ikeda,

5.

†*Magnetoelastic couplings in the deformed kagome quantum spin lattice of volborthite: A. Ikeda, S. Furukawa,

6.

†Ultra-high magnetic field magnetic phases up to 130 T in a breathing pyrochlore antiferromagnet LiInCr O : M. Gen,
4 8

7.

*A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet: R. Okuma,

Magnetization of Multi-Kagome-Strip (MKS) Lattice Spin-Frustrated Magnet
K2Mn3(OH)2(VO4)2: D. Otsuka, H. Sato, A. Matsuo, K. Kindo, D. Nakamura and S. Takeyama, J. Phys. Soc. Jpn. 87(2018) 124701 (1-7).

H. Sawabe, Y. H. Matsuda and S. Takeyama, Review of Scientific Instruments 89 (2018) 095106 (1-7).

O. Janson, Y. H. Matsuda, S. Takeyama, T. Yajima, Z. Hiroi and H. Ishikawa, Phys. Rev. B 99 (2019) 140412(R) (1-5).
D. Nakamura, Y. Okamoto and S. Takeyama, Journal of Magnetism and Magnetic Materials 473 (2019) 387-393.

D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama and Z. Hiroi,
Nature Communications 10 (2019) 1229(7).

Kindo group
We have succeeded in examination of various Cu-Ag strong wire. A stronger wire can suppress the deformation of the magnet
after generation of high magnetic field but has a short-life frequently. We have examined the wire which has a tensile strength
below 1.1 GPa. As a result, the magnet obtained long-life. Next step is to elucidate threshold between long and short life.
1.

†*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).

* Joint research among groups within ISSP.

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2.

†*Magnetic-field-induced Quantum Phase in S = 1/2 Frustrated Trellis Lattice: H. Yamaguchi, D. Yoshizawa, T. Kida,

3.

†Magnetism and High-magnetic Field Magnetization in Alkali Superoxide CsO : M. Miyajima, F. Astuti, T. Kakuto,
2

M. Hagiwara, A. Matsuo, Y. Kono, T. Sakakibara, Y. Tamekuni, H. Miyagai and Y. Hosokoshi, J. Phys. Soc. Jpn. 87(2018) 043701 (1-5).

A. Matsuo, D. P. Sari, R. Asih, K. Okunishi, T. Nakano, Y. Nozue, K. Kindo, I. Watanabe and T. Kambe, J. Phys. Soc.
Jpn. 87 (2018) 063704 (1-5).
4.

Superconducting Phase Diagram of the Organic Superconductor κ-(BEDT-TTF)2 Cu[N(CN)2]Br above 30 T: S. Imajo,
Y. Nakazawa and K. Kindo, J. Phys. Soc. Jpn. 87 (2018) 123704 (5).

5.

†* Ultrahigh-Magnetic-Field

6.

†Electric dipole spin resonance in a quantum spin dimer system driven by magnetoelectric coupling: S. Kimura,

7.

*Frustrated magnetism of the maple-leaf-lattice antiferromagnet MgMn O ·3H O: Y. Haraguchi, A. Matsuo, K. Kindo
3 7
2

8.

*High-field phase diagram and phase transitions in hexagonal manganite ErMnO : Y. J. Liu, J. F. Wang, X. F. Sun,
3

Magnetization of Multi-Kagome-Strip (MKS) Lattice Spin-Frustrated Magnet
K2Mn3(OH)2(VO4)2: D. Otsuka, H. Sato, A. Matsuo, K. Kindo, D. Nakamura and S. Takeyama, J. Phys. Soc. Jpn. 87(2018) 124701 (1-7).
M. Matsumoto, M. Akaki, M. Hagiwara, K. Kindo and H. Tanaka, Phys. Rev. B 97 (2018) 140406 (1-5).
and Z. Hiroi, Phys. Rev. B 98 (2018) 064412 (1-7).

J. -S. Zhou, Z. C. Xia, Z. W. Ouyang, M. Yang, C. B. Liu, R. Chen, J. -G. Cheng, Y. Kohama, M. Tokunaga and K.
Kindo, Phys. Rev. B 97 (2018) 214419 (1-5).
9.

†In-plane spin canting and 1/3-magnetization-plateaulike behavior in S = 3/2 Cr3+ kagome lattice antiferromagnets

Cs2KCr3F12 and Cs2NaCr3F12: M. Goto, H. Ueda, C. Michioka, A. Matsuo, K. Kindo, K. Sugawara, S. Kobayashi,
N. Katayama, H. Sawa and K. Yoshimura, Phys. Rev. B 97 (2018) 224421 (1-8).
10. †*Magnetic field induced ferroelectricity and half magnetization plateau in polycrystalline R2V2O7 (R = Ni, Co ):R. Chen, J. F. Wang, Z. W. Ouyang, Z. Z. He, S. M. Wang, L. Lin, J. M. Liu, C. L. Lu, Y. Liu, C. Dong, C. B. Liu, Z. C.
Xia, A. Matsuo, Y. Kohama and K. Kindo, Phys. Rev. B 98 (2018) 184404 (1-7).
11. *Magnetic field induced phenomena in UIrGe in fields applied along the b axis: J. Pospíšil, Y. Haga, Y. Kohama,A. Miyake, S. Kambe, N. Tateiwa, M. Vališka, P. Proschek, J. Prokleška, V. Sechovský, M. Tokunaga, K. Kindo,
A. Matsuo and E. Yamamoto, Phys. Rev. B 98 (2018) 014430 (1-7).
12. †Quantum magnetic properties of the spin-1/2 triangular-lattice antiferromagnet Ba 2La2CoTe2O12: Y. Kojima,
M. Watanabe, N. Kurita, H. Tanaka, A. Matsuo, K. Kindo and M. Avdeev, Phys. Rev. B 98 (2018) 174406 (1-8).
13. †Revising the 4f symmetry in CeCu2Ge2: Soft x-ray absorption and hard x-ray photoemission spectroscopy:
H. Aratani, Y. Nakatani, H. Fujiwara, M. Kawada, Y. Kanai, K. Yamagami, S. Fujioka, S. Hamamoto, K. Kuga, T. Kiss,
A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, A. Yasui, Y. Saitoh,
Y. Narumi, K. Kindo, T. Ebihara and A. Sekiyama, Phys. Rev. B 98 (2018) 121113 (1-6).
14. *Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni3V2O8: Y. J. Liu,
J. F. Wang, Z. Z. He, C. L. Lu, Z. C. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and
M. Tokunaga, Phys. Rev. B 97 (2018) 174429 (1-6).
15. †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).
16. †*Magnetic-Field-Induced Kondo Metal Realized in YbB12: T. T. Terashima, Y. H. Matsuda, Y. Kohama, A. Ikeda,
A. Kondo, K. Kindo and F. Iga, Phys. Rev. Lett. 120 (2018) 257206 (1-5).
17. *Quantum 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. Breunig, J. Engelmayer, A. Herman, J. Wu, K. Kindo,
J. Wosnitza, S. Zherlitsyn and A. Loidl, Phys. Rev. Lett. 120 (2018) 207205 (1-6).
18. †Magnetic and Structural Properties of MnCoGe with Minimal Fe and Sn Substitution: M. Onoue, R. Kobayashi,
Y. Mitsui, M. Hiroi, K. Takahashi, A. Kondo, K. Kindo, Y. Uwatoko and K. Koyama, Mater. Trans. 59 (2018)
1645-1650.
19. † Magnetic phase diagram of the frustrated S=1/2 triangular-lattice magnet Cu 2 (NO 3 )(OH) 3 : H. Kikuchi,
N. Kasamatsu, Y. Ishikawa, Y. Koizumi, Y. Fujii, A. Matsuo and K. Kindo, J. Phys.: Conf. Ser. 969 (2018) 012117 (1-6).

† Joint research with outside partners.

ISSP Activity Report 2018183

20. †Magnetic properties of the antiferromagnetic spin-1/2 tetramer compound CuInVO5: M. Hase, M. Matsumoto,
A. Matsuo and K. Kindo, J. Phys.: Conf. Ser. 969 (2018) 012100 (1-6).
21. †Magnetization and magnetic phase diagram of Heusler compounds Fe3−y(Mn1−xVx)ySi (y = 1 and 1.5): M. Hiroi,
S. Ishikuma, I. Shigeta, K. Koyama, A. Kondo, K. Kindo, H. Manaka and N. Terada, J. Phys.: Conf. Ser. 969 (2018)012099 (1-6).
22. †Divalent ion substitution effect on Yb-site in Kondo insulator YbB12: W. Matsuhra, K. Yokomichi, W. Hirano,
S. Kikuchi, N. Uematsu, H. Nakayama, A. Kondo, K. Kindo and F. Iga, AIP Advances 8 (2018) 101329 (1-3).
23. †Magnetic properties of perovskite Ca1−xSrxFeO3: H. Kawanaka, E. Kawawa, Y. Nishihara, F. Iga, A. Kondo, K. Kindo
and Y. Matsuda, AIP Advances 8 (2018) 101418 (1-4).
24. †Non-magnetic element substitution effect in Kondo insulator YbB12 and exotic surface effect in this alloy system:
F. Iga, K. Yokomichi, W. Matsuhra, H. Nakayama, A. Kondo, K. Kindo and H. Yoshizawa, AIP Advances 8 (2018)
101335 (1-4).
25. †Thermodynamic properties of Heusler Fe2VSi: M. Ito, K. Kai, T. Furuta, H. Manaka, N. Terada, M. Hiroi, A. Kondo
and K. Kindo, AIP Advances 8 (2018) 055703 (1-5).
26. †Magnetic ordering with an XY-like anisotropy in the honeycomb lattice iridates ZnIrO3 and MgIrO3 synthesized via a
metathesis reaction: Y. Haraguchi, C. Michioka, A. Matsuo, K. Kindo, H. Ueda and K. Yoshimura, Phys. Rev. Materials
2 (2018) 054411 (1-6).
27. *Magnetic structural unit with convex geometry: A building block hosting an exchange-striction-driven magnetoelectric
coupling: K. Kimura, Y. Kato, K. Yamauchi, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara,
S. Kimura, M. Toyoda, Y. Motome and T. Kimura, Phys. Rev. Materials 2 (2018) 104415 (1-12).
28. †High-field Magnetism of the Honeycomb-lattice Antiferromagnet Cu2(pymca)3(ClO4): A. Okutani, T. Kida,
Y. Narumi, T. Shimokawa, Z. Honda, K. Kindo, T. Nakano, Y. Nozue and M. Hagiwara, J. Phys. Soc. Jpn. 88 (2019)013703 (4).
29. †Reduction of the Ordered Magnetic Moment by Quantum Fluctuation in the Antiferromagnetic Spin-5/2 Dimer
Compound FeVMoO7: M. Hase, J. R. Hester, K. C. Rule, V. Yu. Pomjakushin, A. Matsuo and K. Kindo, J. Phys. Soc.
Jpn. 88 (2019) 034711 (6).
30. †*Difference in magnetic and ferroelectric properties between rhombohedral and hexagonal polytypes of AgFeO2:
A single-crystal study: N. Terada, Y. Ikedo, H. Sato, D. D. Khalyavin, P. Manuel, F. Orlandi, Y. Tsujimoto, Y. Matsushita, A. Miyake, A. Matsuo, M. Tokunaga and K. Kindo, Phys. Rev. B 99 (2019) 064402 (1-11).
31. †*Enhancement of the effective mass at high magnetic fields in CeRhIn5: L. Jiao, M. Smidman, Y. Kohama, Z. S. Wang,
D. Graf, Z. F. Weng, Y. J. Zhang, A. Matsuo, E. D. Bauer, H. Lee, S. Kirchner, J. Singleton, K. Kindo, J. Wosnitza,
F. Steglich, J. D. Thompson and H. Q. Yuan, Phys. Rev. B 99 (2019) 045127 (6).
32. †Evidence of low-energy singlet excited states in the spin-1/2 polyhedral clusters {Mo72V30} and {W72V30} withstrongly frustrated kagome networks: T. Kihara, H. Nojiri, Y. Narumi, Y. Oshima, K. Kindo, C. Heesing, J. Schnack and
A. Müller, Phys. Rev. B 99 (2019) 064430 (8).
33. †*Magnetoelectric behavior from cluster multipoles in square cupolas: Study of Sr(TiO)Cu4(PO4)4 in comparison with
Ba and Pb isostructurals: Y. Kato, K. Kimura, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara,
S. Kimura, T. Kimura and Y. Motome, Phys. Rev. B 99 (2019) 024415 (1-12).
34. †*Topological transitions among skyrmion- and hedgehog-lattice states in cubic chiral magnets: Y. Fujishiro,
N. Kanazawa, T. Nakajima, X. Z. Yu, K. Ohishi, Y. Kawamura, K. Kakurai, T. Arima, H. Mitamura, A. Miyake,
K. Akiba, M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsune, R. Arita and Y. Tokura, Nat. Commun. 10 (2019) 1059
(1-8).
35. *Thermodynamic evidence of magnetic-field-induced complete valley polarization in bismuth: A. Iwasa, A. Kondo,
S. Kawachi, K. Akiba, Y. Nakanishi, M. Yoshizawa, M. Tokunaga and K. Kindo, Sci Rep 9 (2019) 1672 (1-8).
36. †*Multiple topological states in iron-based superconductors: P. Zhang, Z. Wang, X. Wu, K. Yaji, Y. Ishida, Y. Kohama,
G. Dai, Y. Sun, C. Bareille, K. Kuroda, T. Kondo, K. Okazaki, K. Kindo, X. Wang, C. Jin, J. Hu, R. Thomale,
K. Sumida, S. Wu, K. Miyamoto, T. Okuda, H. Ding, G. D. Gu, T. Tamegai, T. Kawakami, M. Sato and S. Shin, Nature
Phys 15 (2019) 41-48.

* Joint research among groups within ISSP.

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37. *Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal: T. Ohtsuki, Z. Tian, A. Endo,
M. Halim, S. Katsumoto, Y. Kohama, K. Kindo, M. Lippmaa and S. Nakatsuji, Proc. Natl. Acad. Sci. USA 116 (2019)8803-8808.
38. *A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet: R. Okuma,
D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama and Z. Hiroi,
Nature Communications 10 (2019) 1229(7).
39. *Possible observation of quantum spin-nematic phase in a frustrated magnet: Y. Kohama, H. Ishikawa, A. Matsuo,
K. Kindo, N. Shannon and Z. Hiroi, Proc. Nat. Acad. Sci. U.S.A. 116 (2019) 10686-10690.

Tokunaga group
In this year, we have mainly studied magnetotransport properties on several kinds of topological semimetals. As one of theimportant achievements in our group, we demonstrated an experimental method to evaluate the degree of similarity between
one system and ideal Dirac fermion system, “Diracness”, in a narrow-gap semiconductor PbTe through systematic studies ofquantum oscillations up to the quantum limit state. We also developed international collaborations on various subjects, e.g.
multiferroics, heavy fermion compounds, and topological materials.
1.

*Formation and Control of Twin Domains in the Pyrochlore Oxide Cd Re O : Y. Matsubayashi, D. Hirai, M. Tokunaga
2 2 7

2.

†*Magnetic and Structural Properties of A-Site Ordered Chromium Spinel Sulfides: Alternating Antiferromagnetic

and Z. Hiroi, J. Phys. Soc. Jpn. 87 (2018) 104604 (1-7).

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).
3.

*High-field phase diagram and phase transitions in hexagonal manganite ErMnO : Y. J. Liu, J. F. Wang, X. F. Sun,
3

J. -S. Zhou, Z. C. Xia, Z. W. Ouyang, M. Yang, C. B. Liu, R. Chen, J. -G. Cheng, Y. Kohama, M. Tokunaga andK. Kindo, Phys. Rev. B 97 (2018) 214419 (1-5).
4.

†Impact of antiferromagnetic order on Landau-level splitting of quasi-two-dimensional Dirac fermions in EuMnBi :2

H. Masuda, H. Sakai, M. Tokunaga, M. Ochi, H. Takahashi, K. Akiba, A. Miyake, K. Kuroki, Y. Tokura and S. Ishiwata,Phys. Rev. B 98 (2018) 161108 (1-6).
5.

Magnetic field effect on the chiral magnetism of noncentrosymmetric UPtGe: Experiment and theory: A. Miyake, L. M.
Sandratskii, A. Nakamura, F. Honda, Y. Shimizu, D. Li, Y. Homma, M. Tokunaga and D. Aoki, Phys. Rev. B 98 (2018)174436 (1-6).

6.

*Magnetic field induced phenomena in UIrGe in fields applied along the b axis: J. Pospíšil, Y. Haga, Y. Kohama,A. Miyake, S. Kambe, N. Tateiwa, M. Vališka, P. Proschek, J. Prokleška, V. Sechovský, M. Tokunaga, K. Kindo,
A. Matsuo and E. Yamamoto, Phys. Rev. B 98 (2018) 014430 (1-7).
7.

†Negative

8.

Quantitative evaluation of Dirac physics in PbTe: K. Akiba, A. Miyake, H. Sakai, K. Katayama, H. Murakawa,
N. Hanasaki, S. Takaoka, Y. Nakanishi, M. Yoshizawa and M. Tokunaga, Phys. Rev. B 98 (2018) 115144 (1-11).

9.

*Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni V O : Y. J. Liu,
3 2 8

magnetoresistance suppressed through a topological phase transition in (Cd1-xZnx)3As2 thin films:
S. Nishihaya, M. Uchida, Y. Nakazawa, K. Akiba, M. Kriener, Y. Kozuka, A. Miyake, Y. Taguchi, M. Tokunaga and
M. Kawasaki, Phys. Rev. B 97 (2018) 245103 (1-7).

J. F. Wang, Z. Z. He, C. L. Lu, Z. C. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and
M. Tokunaga, Phys. Rev. B 97 (2018) 174429 (1-6).
10. 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.
11. †Deviation from the Kohler’s rule and Shubnikov–de Haas oscillations in type-II Weyl semimetal WTe2 : High magnetic
field study up to 56 T: S. Onishi, R. Jha, A. Miyake, R. Higashinaka, T. D. Matsuda, M. Tokunaga and Y. Aoki, AIP
Advances 8 (2018) 101330 (1-5).
12. †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).

† Joint research with outside partners.

ISSP Activity Report 2018185

13. †Consecutive magnetic phase diagram of UCoGe-URhGe-UIrGe system: J. Pospíšil, Y. Haga, A. Miyake, S. Kambe,
N. Tateiwa, Y. Tokunaga, F. Honda, A. Nakamura, Y. Homma, M. Tokunaga, D. Aoki and E. Yamamoto, Physica B:
Condensed Matter 536 (2018) 532-534.
14. Observation of Poiseuille flow of phonons in black phosphorus: Y. Machida, A. Subedi, K. Akiba, A. Miyake,
M. Tokunaga, Y. Akahama, K. Izawa and K. Behnia, Sci. Adv. 4 (2018) eaat3374 (1-9).
15. *Magnetic structural unit with convex geometry: A building block hosting an exchange-striction-driven magnetoelectric
coupling: K. Kimura, Y. Kato, K. Yamauchi, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara,
S. Kimura, M. Toyoda, Y. Motome and T. Kimura, Phys. Rev. Materials 2 (2018) 104415 (1-12).
16. †Negative-pressure-induced helimagnetism in ferromagnetic cubic perovskites Sr1-xBaxCoO3: H. Sakai, S. Yokoyama,
A. Kuwabara, J. S. White, E. Canévet, H. M. Rønnow, T. Koretsune, R. Arita, A. Miyake, M. Tokunaga, Y. Tokura and
S. Ishiwata, Phys. Rev. Materials 2 (2018) 104412 (1-6).
17. †Magnetic-field-induced transition for reentrant martensitic transformation in Co-Cr-Ga-Si shape memory alloys: X. Xu,
T. Kihara, A. Miyake, M. Tokunaga, T. Kanomata and R. Kainuma, Journal of Magnetism and Magnetic Materials 466(2018) 273-276.
18. †Thermal, magnetic field- and stress-induced transformation in Heusler-type Co-Cr-Al-Si shape memory alloys:
T. Odaira, X. Xu, A. Miyake, T. Omori, M. Tokunaga and R. Kainuma, Scripta Materialia 153 (2018) 35-39.
19. †*Difference in magnetic and ferroelectric properties between rhombohedral and hexagonal polytypes of AgFeO2:
A single-crystal study: N. Terada, Y. Ikedo, H. Sato, D. D. Khalyavin, P. Manuel, F. Orlandi, Y. Tsujimoto, Y. Matsushita, A. Miyake, A. Matsuo, M. Tokunaga and K. Kindo, Phys. Rev. B 99 (2019) 064402 (1-11).
20. †Magnetic and electrical properties of the ternary compound U2Ir2Si5 with one-dimensional uranium zigzag chains:
D. X. Li, F. Honda, A. Miyake, Y. Homma, Y. Haga, A. Nakamura, Y. Shimizu, A. Maurya, Y. J. Sato, M. Tokunaga andD. Aoki, Phys. Rev. B 99 (2019) 054408 (1-9).
21. †*Magnetoelectric behavior from cluster multipoles in square cupolas: Study of Sr(TiO)Cu4(PO4)4 in comparison with
Ba and Pb isostructurals: Y. Kato, K. Kimura, A. Miyake, M. Tokunaga, A. Matsuo, K. Kindo, M. Akaki, M. Hagiwara,
S. Kimura, T. Kimura and Y. Motome, Phys. Rev. B 99 (2019) 024415 (1-12).
22. †*Topological transitions among skyrmion- and hedgehog-lattice states in cubic chiral magnets: Y. Fujishiro,
N. Kanazawa, T. Nakajima, X. Z. Yu, K. Ohishi, Y. Kawamura, K. Kakurai, T. Arima, H. Mitamura, A. Miyake,
K. Akiba, M. Tokunaga, A. Matsuo, K. Kindo, T. Koretsune, R. Arita and Y. Tokura, Nat. Commun. 10 (2019) 1059
(1-8).
23. *Thermodynamic evidence of magnetic-field-induced complete valley polarization in bismuth: A. Iwasa, A. Kondo,
S. Kawachi, K. Akiba, Y. Nakanishi, M. Yoshizawa, M. Tokunaga and K. Kindo, Sci Rep 9 (2019) 1672 (1-8).
24. *A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet: R. Okuma,
D. Nakamura, T. Okubo, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga, N. Kawashima, S. Takeyama and Z. Hiroi,
Nature Communications 10 (2019) 1229 (7).

Y. Matsuda group
Ultrahigh magnetic fields of up to 1200 T has been generated by the electromagnetic flux compression technique using a new
5 MJ condenser bank system installed in ISSP rather recently. It is the indoor world record of magnetic field. Several measurements such as Faraday rotation, optical transmission, magnetization, and electrical resistivity have already been done using
multi-megagauss magnetic fields. Development of the technique for measuring magnetostriction has been conducted and theone using so-called Fiber Bragg Grating (FBG) was improved. The field-induced linear magnetostriction corresponding to themagnetization plateau behavior of a deformed Kagome lattice has been clearly observed. In addition, thermal properties in the
Kondo insulator YbB12 was studied in pulsed high fields of up to 60 T, and the field-induced metallic phase has been found to bea heavy fermion metal.
1.

†*Magnetic-Field-Induced Kondo Metal Realized in YbB

2.

†*100 MHz high-speed strain monitor using fiber Bragg grating and optical filter applied for magnetostriction measure-

12: T. T. Terashima, Y. H. Matsuda, Y. Kohama, A. Ikeda,
A. Kondo, K. Kindo and F. Iga, Phys. Rev. Lett. 120 (2018) 257206 (1-5).

ments of cobaltite at magnetic fields beyond 100 T: A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi,
H. Watanabe and K. Sato, Physica B: Condensed Matter 536 (2018) 847-849.

* Joint research among groups within ISSP.

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3.

†Note: Optical filter method for high-resolution magnetostriction measurement using fiber Bragg grating under milli-

second-pulsed high magnetic fields at cryogenic temperatures: A. Ikeda, Y. H. Matsuda and H. Tsuda, Review of Scientific Instruments 89 (2018) 096103 (3 pages).
4.

*Record indoor magnetic field of 1200 T generated by electromagnetic flux-compression: D. Nakamura, A. Ikeda,

5.

†*Magnetoelastic couplings in the deformed kagome quantum spin lattice of volborthite: A. Ikeda, S. Furukawa,

H. Sawabe, Y. H. Matsuda and S. Takeyama, Review of Scientific Instruments 89 (2018) 095106 (1-7).

O. Janson, Y. H. Matsuda, S. Takeyama, T. Yajima, Z. Hiroi and H. Ishikawa, Phys. Rev. B 99 (2019) 140412(R) 1-5.

6. ファイバーブラッググレーティングを用いた高速 100MHz ひずみ測定装置の構築と超強磁場中スピン格子物性の開拓 : 池田
暁彦 , 松田 康弘 , 固体物理 54 (2019) 147- 157.

Kohama group
We have investigated various high-field properties by means of specific heat, magnetooptics and resistivity measurement
techniques. In Ni3V2O8, YbB12 and UIrGe, the field-induced phase transitions have been detected, where the field dependence
of entropy have been unveiled. We also have started to construct a new type of capacitor bank for the generation of pulsed
magnetic fields with the second order timescale.
1.

*High-field phase diagram and phase transitions in hexagonal manganite ErMnO : Y. J. Liu, J. F. Wang, X. F. Sun,
3

J. -S. Zhou, Z. C. Xia, Z. W. Ouyang, M. Yang, C. B. Liu, R. Chen, J. -G. Cheng, Y. Kohama, M. Tokunaga andK. Kindo, Phys. Rev. B 97 (2018) 214419 (1-5).
2.

†*Magnetic field induced ferroelectricity and half magnetization plateau in polycrystalline R V O (R = Ni, Co):
2 2 7

R. Chen, J. F. Wang, Z. W. Ouyang, Z. Z. He, S. M. Wang, L. Lin, J. M. Liu, C. L. Lu, Y. Liu, C. Dong, C. B. Liu, Z. C.
Xia, A. Matsuo, Y. Kohama and K. Kindo, Phys. Rev. B 98 (2018) 184404 (1-7).
3.

*Magnetic field induced phenomena in UIrGe in fields applied along the b axis: J. Pospíšil, Y. Haga, Y. Kohama,A. Miyake, S. Kambe, N. Tateiwa, M. Vališka, P. Proschek, J. Prokleška, V. Sechovský, M. Tokunaga, K. Kindo,
A. Matsuo and E. Yamamoto, Phys. Rev. B 98 (2018) 014430 (1-7).
4.

*Unusual magnetoelectric memory and polarization reversal in the kagome staircase compound Ni V O : Y. J. Liu,
3 2 8

J. F. Wang, Z. Z. He, C. L. Lu, Z. C. Xia, Z. W. Ouyang, C. B. Liu, R. Chen, A. Matsuo, Y. Kohama, K. Kindo and
M. Tokunaga, Phys. Rev. B 97 (2018) 174429 (1-6).

5.

†*Magnetic-Field-Induced Kondo Metal Realized in YbB

6.

*Quantum Criticality of an Ising-like Spin-1/2 Antiferromagnetic Chain in a Transverse Magnetic Field: Z. Wang,

12: T. T. Terashima, Y. H. Matsuda, Y. Kohama, A. Ikeda,
A. Kondo, K. Kindo and F. Iga, Phys. Rev. Lett. 120 (2018) 257206 (1-5).

T. Lorenz, D. I. Gorbunov, P. T. Cong, Y. Kohama, S. Niesen, O. Breunig, J. Engelmayer, A. Herman, J. Wu, K. Kindo,
J. Wosnitza, S. Zherlitsyn and A. Loidl, Phys. Rev. Lett. 120 (2018) 207205 (1-6).
7.

Magneto-optical Transitions of GaAs/AlGaAs Multiple Quantum Wells: Y. Kim, J. D. Song and Y. Kohama, J. Korean
Phys. Soc. 73 (2018) 338-342.

8.

†*Enhancement of the effective mass at high magnetic fields in CeRhIn : L. Jiao, M. Smidman, Y. Kohama, Z. S. Wang,
5

D. Graf, Z. F. Weng, Y. J. Zhang, A. Matsuo, E. D. Bauer, H. Lee, S. Kirchner, J. Singleton, K. Kindo, J. Wosnitza,
F. Steglich, J. D. Thompson and H. Q. Yuan, Phys. Rev. B 99 (2019) 045127 (6).
9.

Viscosity measurements in pulsed magnetic fields by using a quartz-crystal microbalance: T. Nomura, S. Zherlitsyn,
Y. Kohama and J. Wosnitza, Rev. Sci. Instrum. 90 (2019) 065101.

10. * カゴメ銅鉱物ボルボサイトにおける軌道転移とフラストレート磁性 : 広井 善二 , 石川 孟 , 小濱 芳允 , 固体物理 54 (2019)117-130.
11. *Unconventional field-induced spin gap in an S = 1/2 chiral staggered chain: J. Liu, S. Kittaka, R. D. Johnson,
T. Lancaster, J. Singleton, T. Sakakibara, Y. Kohama, J. van Tol, A. Ardavan, B. H. Williams, S. J. Blundell, Z. E.
Manson, J. L. Manson and P. A. Goddard, Phys Rev Lett 122 (2019) 057207.
12. †*Multiple topological states in iron-based superconductors: P. Zhang, Z. Wang, X. Wu, K. Yaji, Y. Ishida, Y. Kohama,
G. Dai, Y. Sun, C. Bareille, K. Kuroda, T. Kondo, K. Okazaki, K. Kindo, X. Wang, C. Jin, J. Hu, R. Thomale,
K. Sumida, S. Wu, K. Miyamoto, T. Okuda, H. Ding, G. D. Gu, T. Tamegai, T. Kawakami, M. Sato and S. Shin, Nature
Phys 15 (2019) 41-48.

† Joint research with outside partners.

ISSP Activity Report 2018187

13. Shubnikov–de Haas oscillations in the three-dimensional Dirac fermion system Ca3PbO: Y. Obata, Y. Kohama,
S. Matsuishi and H. Hosono, Phys Rev B 99 (2019) 115133.
14. *Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal: T. Ohtsuki, Z. Tian, A. Endo,
M. Halim, S. Katsumoto, Y. Kohama, K. Kindo, M. Lippmaa and S. Nakatsuji, Proc. Natl. Acad. Sci. USA 116 (2019)8803-8808.
15. *Possible observation of quantum spin-nematic phase in a frustrated magnet: Y. Kohama, H. Ishikawa, A. Matsuo,
K. Kindo, N. Shannon and Z. Hiroi, Proc. Nat. Acad. Sci. U.S.A. 116 (2019) 10686-10690.

Laser and Synchrotron Research Center
Shin group
We studied high Tc Fe-pnictide superconductors using 7-eV laser. High resolution photoemission study with polarization dependence is very powerful for the study of the superconducting mechanism. Orbital fluctuation mechanism is also important inaddition to the spin fluctuation mechanism.
1.

*Surface electronic states of Au-induced nanowires on Ge(0 0 1): K. Yaji, R. Yukawa, S. Kim, Y. Ohtsubo, P. L. Fèvre,2.

†*Antiphase Fermi-surface modulations accompanying displacement excitation in a parent compound of iron-based

F. Bertran, A. Taleb-Ibrahimi, I. Matsuda, K. Nakatsuji, S. Shin and F. Komori, J. Phys.: Condens. Matter 30 (2018)075001 (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).
3.
4.

*Disorder-sensitive nodelike small gap in FeSe: Y. Sun, S. Kittaka, S. Nakamura, T. Sakakibara, P. Zhang, S. Shin,

K. Irie, T. Nomoto, K. Machida, J. Chen and T. Tamegai, Phys. Rev. B 98 (2018) 064505 (1-7).

†*Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)- (2×1): T. Nakamura, Y. Ohtsubo,

Y. Yamashita, S.-I. Ideta, K. Tanaka, K. Yaji, A. Harasawa, S. Shin, F. Komori, R. Yukawa, K. Horiba, H. Kumigashiraand S.-I. Kimura, Phys. Rev. B 98 (2018) 075431.
5.

*Kondo hybridization and quantum criticality in β−YbAlB by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama,
46.

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).

7.

*Femtosecond resonant magneto-optical Kerr effect measurement on an ultrathin magnetic film in a soft X-ray free

K. Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).

electron laser: S. Yamamoto, Y. Kubota, K. Yamamoto, Y. Takahashi, K. Maruyama, Y. Suzuki, R. Hobara, M. Fujisawa,D. Oshima, S. Owada, T. Togashi, K. Tono, M. Yabashi, Y. Hirata, S. Yamamoto, M. Kotsugi, H. Wadati, T. Kato,
S. Iwata, S. Shin and I. Matsuda, Jpn. J. Appl. Phys. 57 (2018) 09TD02 (1-4).
8.

†*Electronic Structure of Ce-Doped and -Undoped Nd CuO Superconducting Thin Films Studied by Hard X-Ray
2
4

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).
9.

*Element Selectivity in Second-Harmonic Generation of GaFeO by a Soft-X-Ray Free-Electron Laser: Sh.
3
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).

10. †*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).
11. *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.
* Joint research among groups within ISSP.

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12. * 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.
13. †*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.
14. *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).
15. *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 136 (2018) e57090.
16. *Orbital-selective metal-insulator transition lifting the t2g band hybridization in the Hund metal Sr3(Ru1-xMnx)2O7:
M. Nakayama, T. Kondo, K. Kuroda, C. Bareille, M. D. Watson, S. Kunisada, R. Noguchi, T. K. Kim, M. Hoesch,
Y. Yoshida and S. Shin, Physical Review B 98 (2018) 161102(R).
17. *Rashba spin splitting of L-gap surface states on Ag(111) and Cu(111): K. Yaji, A. Harasawa, K. Kuroda, R. Li, B. Yan,
F. Komori and S. Shin, Physical Review B 98 (2018) 041404(R).
18. †*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).
19. * 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.
20. †*Photo-induced semimetallic states realised in electron–hole coupled insulators: K. Okazaki, Y. Ogawa, T. Suzuki,
T. Yamamoto, T. Someya, S. Michimae, M. Watanabe, Y. Lu, M. Nohara, H. Takagi, N. Katayama, H. Sawa,
M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, T. Mizokawa and S. Shin, Nat Commun 9 (2018) 4322 (1-6).
21. *Imaging the Formation of Ferromagnetic Domains at the LaAlO 3/SrTiO3 Interface: Y. Motoyui, T. Taniuchi,
P. Scheiderer, J. N. Lee, J. Gabel, F. Pfaff, M. Sing, M. Lippmaa, R. Claessen and S. Shin, J. Phys. Soc. Jpn. 88 (2019)034717 (1-5).
22. †*Coexistence of Two Types of Spin Splitting Originating from Different Symmetries: K. Yaji, A. Visikovskiy, T. Iimori,K. Kuroda, S. Hayashi, T. Kajiwara, S. Tanaka, F. Komori and S. Shin, Phys. Rev. Lett. 122 (2019) 126403.
23. *A weak topological insulator state in quasi-one-dimensional bismuth iodide: R. Noguchi, T. Takahashi, K. Kuroda,
M. Ochi, T. Shirasawa, M. Sakano, C. Bareille, M. Nakayama, M. D. Watson, K. Yaji, A. Harasawa, H. Iwasawa,
P. Dudin, T. K. Kim, M. Hoesch, V. Kandyba, A. Giampietri, A. Barinov, S. Shin, R. Arita, T. Sasagawa and T. Kondo,
Nature 566 (2019) 518.
24. *Low-energy electron-mode couplings in the surface bands of Sr2RuO4 revealed by laser-based angle-resolved photoemission spectroscopy: S. Akebi, T. Kondo, M. Nakayama, K. Kuroda, S. Kunisada, H. Taniguchi, Y. Maeno and
S. Shin, Physical Review B 99 (2019) 081108(R).
25. †*Multiple topological states in iron-based superconductors: P. Zhang, Z. Wang, X. Wu, K. Yaji, Y. Ishida, Y. Kohama,
G. Dai, Y. Sun, C. Bareille, K. Kuroda, T. Kondo, K. Okazaki, K. Kindo, X. Wang, C. Jin, J. Hu, R. Thomale,
K. Sumida, S. Wu, K. Miyamoto, T. Okuda, H. Ding, G. D. Gu, T. Tamegai, T. Kawakami, M. Sato and S. Shin, Nature
Phys 15 (2019) 41-48.

I. Matsuda group
In 2018, we extended our experimental technique, developed at SPring-8 BL07LSU, to the next generation light sources. Using
an X-ray free electron laser, we successfully observed the second harmonic generation of soft X-ray in a non-linear crystal of
GaFeO3. The signal was enhanced by the core-level resonance effect and, thus, it contained the element specific information.
This fact indicates that the non-linear soft X-ray spectroscopy becomes an experimental probe for material science. We also
designed new beamlines and experimental stations for ultimately high-brilliant soft X-ray synchrotron radiation, motivatedby announcement on the next-generation facility by the Minister of Education, Culture, Sports, Science and Technology.
Concerning the material science, we synthesized novel atomic layers. For examples, we fabricated a free-standing layer ofborophane and also a monolayer of the Cat-TTF derivative that form interface hydrogen bonding with the self-assembled
monolayer. We also examined their electronic properties and carrier dynamics by synchrotron radiation and laser.

† Joint research with outside partners.

ISSP Activity Report 2018

189

1.

2.

*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).

*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).
3.

*Peculiar

4.

*Femtosecond resonant magneto-optical Kerr effect measurement on an ultrathin magnetic film in a soft X-ray freebonding 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).
electron laser: S. Yamamoto, Y. Kubota, K. Yamamoto, Y. Takahashi, K. Maruyama, Y. Suzuki, R. Hobara, M. Fujisawa,D. Oshima, S. Owada, T. Togashi, K. Tono, M. Yabashi, Y. Hirata, S. Yamamoto, M. Kotsugi, H. Wadati, T. Kato,
S. Iwata, S. Shin and I. Matsuda, Jpn. J. Appl. Phys. 57 (2018) 09TD02 (1-4).

5.

*Element

6.

Controlling the surface photovoltage on WSe2 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).

7.

Interfacial carrier dynamics of graphene on SiC, traced by the full-range time-resolved core-level photoemission
spectroscopy: T. Someya, H. Fukidome, N. Endo, K. Takahashi, S. Yamamoto and I. Matsuda, Appl. Phys. Lett. 113(2018) 051601(1-4).

8.

†*Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,

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).

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.

*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.

10. †*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.
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. 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.
13. *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).
14. *Enhancement of CO2 adsorption on oxygen-functionalized epitaxial graphene surface under near-ambient conditions:S. Yamamoto, K. Takeuchi, Y. Hamamoto, R.-Y. Liu, Y. Shiozawa, T. Koitaya, T. Someya, K. Tashima, H. Fukidome,
K. Mukai, S. Yoshimoto, M. Suemitsu, Y. Morikawa, J. Yoshinobu and I. Matsuda, Phys. Chem. Chem. Phys. 20 (2018)19532.
15. 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).
16. Time-Resolved Photoelectron Spectroscopy: I. Matsuda, Compendium of Surface and Interface Analysis Contributed
Book (Springer) (2018).
17. Superstructure-Induced Splitting of Dirac Cones in Silicene: B. Feng, H. Zhou, Y. Feng, H. Liu, S. He, I. Matsuda,
L. Chen, E. F. Schwier, K. Shimada, S. Meng and K. Wu, Phys. Rev. Lett. 122 (2019) 196801(1-6).

* Joint research among groups within ISSP.

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18. *Direct Evidence of Interfacial Hydrogen Bonding in Proton-Electron Concerted 2D Organic Bilayer on Au Substrate:
S. Yamamoto, H. S. Kato, A. Ueda, S. Yoshimoto, Y. Hirata, J. Miyawaki, K. Yamamoto, Y. Harada, H. Wadati, H. Mori,J. Yoshinobu and I. Matsuda, e-Journal of Surface Science and Nanotechnology 17 (2019) 49-55.
19. †Enhanced Photoresponsivity of Fullerene in the Presence of Phthalocyanine: A Time-Resolved X-ray Photoelectron Spectroscopy Study of Phthalocyanine/C 60 /TiO 2 (110): K. Ozawa, S. Yamamoto, M. D’angelo, Y. Natsui,
N. Terashima, K. Mase and I. Matsuda, J. Phys. Chem. C 123 (2019) 4388-4395.
20. Electronic structure of a monoatomic Cu2Si layer on a Si(111) substrate: M. Cameau, R. Yukawa, C. -H. Chen,
A. Huang, S. Ito, R. Ishibiki, K. Horiba, Y. Obata, T. Kondo, H. Kumigashira, H. -T. Jeng, M. D'angelo and I. Matsuda,
Phys. Rev. Materials 3 (2019) 044004 (1-5).
21. Semimetallicity of free-standing hydrogenated monolayer boron from MgB2: I. Tateishi, N. T. Cuong, C. A. S. Moura,
M. Cameau, R. Ishibiki, A. Fujino, S. Okada, A. Yamamoto, M. Araki, S. Ito, S. Yamamoto, M. Niibe, T. Tokushima,
D. E. Weibel, T. Kondo, M. Ogata and I. Matsuda, Phys. Rev. Materials 3 (2019) 024004 (1-8).
22. *Hydrogen adsorption and absorption on a Pd-Ag alloy surface studied using in-situ X-ray photoelectron spectroscopy
under ultrahigh vacuum and ambient pressure: J. Tang, S. Yamamoto, T. Koitaya, Y. Yoshikura, K. Mukai, S. Yoshimoto,
I. Matsuda and J. Yoshinobu, Applied Surface Science 463 (2019) 1161-1167.
23. *Mass transport in the PdCu phase structures during hydrogen adsorption and absorption studied by XPS underhydrogen atmosphere: J. Tang, S. Yamamoto, T. Koitaya, A. Yoshigoe, T. Tokunaga, K. Mukai, I. Matsuda and J. Yoshinobu, Applied Surface Science 480 (2019) 419-426.
24. *CO2 Activation and Reaction on Zn-Deposited Cu Surfaces Studied by Ambient-Pressure X-ray Photoelectron
Spectroscopy: T. Koitaya, S. Yamamoto, Y. Shiozawa, Y. Yoshikura, M. Hasegawa, J. Tang, K. Takeuchi, K. Mukai,
S. Yoshimoto, I. Matsuda and J. Yoshinobu, ACS Catal. 9 (2019) 4539-4550.
25. Segmented Undulator for Extensive Polarization Controls in ≤1 nm-rad Emittance Rings: I. Matsuda, S. Yamamoto,J. Miyawaki, T. Abukawa and T. Tanaka, e-J. Surf. Sci. Nanotechnol. 17 (2019) 41-48.
26. Monatomic Two-Dimensional Layers: Modern Experimental Approaches for Structure, Properties, and Industrial Use:I. M. ed., (Elsevier, Amsterdam, Netherland, 2019).

Kobayashi group
We are studying the state-of-the-art laser system including ultrashort-pulse lasers and deep-ultraviolet lasers. We aim to know
"How and Why materials are broken by light?" utilizing experiment of light-matter interaction and deep-learning technology.
1.

†Deep-hole drilling of amorphous silica glass by extreme ultraviolet femtosecond pulses: T. Shibuya, T. Takahashi,

K. Sakaue, T.-H. Dinh, H. Hara, T. Higashiguchi, M. Ishino, Y. Koshiba, M. Nishikino, H. Ogawa, M. Tanaka,
M. Washio, Y. Kobayashi and R. Kuroda, Appl. Phys. Lett. 113 (2018) 171902.
2.

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).

3.

Watt-level 193 nm source generation based on compact collinear cascaded sum frequency mixing configuration:
Z. Zhao, C. Qu, H. Igarashi, H. Xuan, T. Miura, S. Ito and Y. Kobayashi, Opt. Express 26 (2018) 19435-19444.

4.

†*100 MHz high-speed strain monitor using fiber Bragg grating and optical filter applied for magnetostriction measure-ments of cobaltite at magnetic fields beyond 100 T: A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi,
H. Watanabe and K. Sato, Physica B: Condensed Matter 536 (2018) 847-849.
5.

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).

6.

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 (1-6).

7.

*Femtosecond pulse generation beyond photon lifetime limit in gain-switched semiconductor lasers: T. Ito, H. Nakamae,

8.

Kerr-lens mode locking above a 20  GHz repetition rate: S. Kimura, S. Tani and Y. Kobayashi, Optica 6 (2019) 532-533.

9.

Raman-assisted broadband mode-locked laser: S. Kimura, S. Tani and Y. Kobayashi, Sci Rep 9 (2019) 3738 (1-6).

Y. Hazama, T. Nakamura, S. Chen, M. Yoshita, C. Kim, Y. Kobayashi and H. Akiyama, Commun. Phys. 1 (2018) 42.

† Joint research with outside partners.

ISSP Activity Report 2018191

10. Direct generation of femtosecond vortex beam from a Yb:KYW oscillator featuring a defect-spot mirror: S. Wang,
Z. Zhao, I. Ito and Y. Kobayashi, OSA Continuum 2 (2019) 523-530.
11. Monolithic LiF or MgF2 lens-window-prism device for coherent 10.7  eV beam source with 1 MHz repetition rate:
Z. Zhao, K. Kuroda, A. Harasawa, T. Kondo, S. Shin and Y. Kobayashi, Chin. Opt. Lett. 17 (2019) 051406.
12. Improvement of conversion efficiency of DUV light generation at 221-nm using CLBO crystal: H. Igarashi, Z. Zhao,
H. Xuan, C. Qu, S. Ito, Y. Tamaru, M. Tamiya, T. Miura, J. Fujimoto, H. Mizoguchi and Y. Kobayashi, in: Proc. SPIE
10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII (SPIE, 2018), 1051602 (1-7).
13. TACMI コンソーシアムの展望 : 小林 洋平 , 光アライアンス 29 (2018) 43.
14. レーザー加工がもたらす未来のものづくりシステムとは？ ＡＩを駆使した加工レシピの最適化へ : 小林 洋平 , OPTRONICS 4(2018) 167-172.
15. ものづくりを変える！ＮＥＤＯのレーザー加工技術 : 小林 洋平 , forcus NEDO 68 (2018) 4.
16. カーレンズモード同期レーザーを用いた高繰り返し光周波数コムの開発 : 木村 祥太 , 谷 峻太郎 , 小林 洋平 , 光技術コンタ
クト 57 (2019) 3-9.
17. *Gerard A. Mourou 博士とチャープパルス増幅法 : 渡部 俊太郎 , 鍋川 康夫 , 板谷 治郎 , 小林 洋平 , 科学 82 巻 2 号(2019) 131-137.

Itatani group
We developed a high harmonic beamline for soft X-ray spectroscopy in the water window. Using a few-cycle CEP-stable intense
IR source (optical parametric chirped pulse amplifier; OPCPA), attosecond pulses were produced in helium with a high pressure
gas cell, resulting in broadband soft X-ray spectra that cover the entire water window (280-530 eV). We also developed an
intense MIR source with a multi-plate pulse compression technique. Sub-two-cycle pulses at at 3.5-μm with a stable carrierenvelope phase were successfully produced. The maximum field amplitude at the focus was estimated to be 280 MV/cm. Using
intense MIR sources, we carried out several experiments on high harmonic generation in solids. With a crystalline GaSe, we
observed nontrivial polarization behavior, which was reproduced by the first-principle simulation and an intra-band current
model. We also produced high harmonics in GaSe with circularly polarized pulses, and experimentally confirmed a selection
rule. Collaboration with Shin and Okazaki groups was continued on time-resolved ARPES experiments.
1.

†*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).
2.

†Polarization-Resolved Study of High Harmonics from Bulk Semiconductors: K. Kaneshima, Y. Shinohara, K. Takeuchi,

3.

†*Resonant magneto-optical Kerr effect measurement system using a high harmonic generation laser: Sh. Yamamoto,

N. Ishii, K. Imasaka, T. Kaji, S. Ashihara, K. L. Ishikawa and J. Itatani, Phys. Rev. Lett. 120 (2018) 243903.

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.
4.

Generation of sub-two-cycle CEP-stable optical pulses at 3.5  µm 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. 43 (2018) 2720.

5.

All-optical characterization of the two-dimensional waveform and the Gouy phase of an infrared pulse based on plasma
fluorescence of gas: N. Saito, N. Ishii, T. Kanai and J. Itatani, Opt. Express 26 (2018) 24591.

6.

†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).
7.

†*Photo-induced semimetallic states realised in electron–hole coupled insulators: K. Okazaki, Y. Ogawa, T. Suzuki,

T. Yamamoto, T. Someya, S. Michimae, M. Watanabe, Y. Lu, M. Nohara, H. Takagi, N. Katayama, H. Sawa,
M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, T. Mizokawa and S. Shin, Nat Commun 9 (2018) 4322 (1-6).
8.

*Nonlinear propagation effects in high harmonic generation in reflection and transmission from gallium arsenide: P. Xia,

C. Kim, F. Lu, T. Kanai, H. Akiyama, J. Itatani and N. Ishii, Optics Express 26 (2018) 29393-29400.

* Joint research among groups within ISSP.

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9.

†Ultrafast Control of Ferroelectricity with Dynamical Repositioning of Protons in a Supramolecular Cocrystal Studied

by Femtosecond Nonlinear Spectroscopy: T. Umanodan, K. Kaneshima, K. Takeuchi, N. Ishii, J. Itatani, H. Hirori,
Y. Sanari, K. Tanaka, Y. Kanemitsu, T. Ishikawa, S.-Y. Koshihara, S. Horiuchi and Y. Okimoto, J. Phys. Soc. Jpn. 88(2019) 013705.
10. Optical parametric amplification of carrier-envelope phase-stabilized mid-infrared pulses generated by intra-pulse
difference frequency generation: N. Ishii, P. Xia, T. Kanai and J. Itatani, Opt. Express 27 (2019) 11447.
11. †High-order harmonic generation from hybrid organic–inorganic perovskite thin films: H. Hirori, P. Xia, Y. Shinohara,
T. Otobe, Y. Sanari, H. Tahara, N. Ishii, J. Itatani, K. L. Ishikawa, T. Aharen, M. Ozaki, A. Wakamiya and Y. Kanemitsu,
APL Materials 7 (2019) 041107.
12. *Gerard A. Mourou 博士とチャープパルス増幅法 : 渡部 俊太郎 , 鍋川 康夫 , 板谷 治郎 , 小林 洋平 , 科学 82 巻 2 号(2019) 131-137.

Harada group
Advanced use of Resonant Inelastic X-ray Scattering is not limited to solid state physics or solution chemistry but now
extending to biochemistry. Before entering real biosystems which contain extremely complex and inhomogeneous local structure and multi-elements we analyzed functional part of biosystems using model complexes like iron complexes, iron–sulfur
complexes and cobalt containing polyoxometalate complexes. Charge transfer dynamics among metal sites of those complexes
mediated by anionic ligands are essential to function biomaterials through catalysis, molecular binding, electron transfer and soon. We have established novel methods to obtain intact spectra of those fragile complexes to X-rays without radiation damage
and published three papers this year. We have performed 13 collaborative works at BL07LSU HORNET end-station. They are
well balanced in scientific topics; five of which are studies on the behavior of water at various circumstances (including international collaborations with researchers in MAX IV and Stockholm University in Sweden), four are batteries and the remaining
four are solid state physics. Using beamtimes for beamline tuning we accepted some test experiments on samples from companies for future collaborations.
1.

†Electronic structure and magnetic properties of the half-metallic ferrimagnet Mn VAl probed by soft x-ray spectrosco2

pies: 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).
2.

†Raman and fuorescence-like components in resonant inelastic x-ray scattering on LaAlO /SrTiO heterostructures:
3
3

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).
3.

†*Tensile-Strain-Dependent Spin States in Epitaxial LaCoO Thin Films: Y. Yokoyama, Y. Yamasaki, M. Taguchi,
3

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).
4.

†Electronic Spectra of Iron–Sulfur Complexes Measured by 2p3d RIXS Spectroscopy: B. E. V. Kuiken, A. W. Hahn,

B. Nayyar, C. E. Schiewer, S. C. Lee, F. Meyer, T. Weyhermüller, A. Nicolaou, Y.-T. Cui, J. Miyawaki, Y. Harada and
S. DeBeer, Inorg. Chem. 57 (2018) 7355-7361.
5.

†Probing the Valence Electronic Structure of Low-Spin Ferrous and Ferric Complexes Using 2p3d Resonant Inelastic

X-ray Scattering (RIXS): A. W. Hahn, B. E. V. Kuiken, V. G. Chilkuri, N. Levin, E. Bill, T. Weyhermüller, A. Nicolaou,
J. Miyawaki, Y. Harada and S. DeBeer, Inorg. Chem. 57 (2018) 9515-9530.
6.

†Direct Observation of Cr3+ 3d States in Ruby: Toward Experimental Mechanistic Evidence of Metal Chemistry: M. O.

J. Y. Hunault, Y. Harada, J. Miyawaki, J. Wang, A. Meijerink, F. M. F. D. Groot and M. M. van Schooneveld, J. Phys.
Chem. A 122 (2018) 4399-4413.
7.

†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.
8.

Resonant Inelastic X-ray Scattering (RIXS): Y. Harada, Synchrotron Radiation News 31 (2018) 2.

9.

Resonant Inelastic X-Ray Scattering: Y. Harada, in: Compendium of Surface and Interface Analysis, Ch 86, edited by
The Surface Science Society of Japan, (Springer, 2-40-13-402 Hongo, Bunkyo-ku, Tokyo 113-0033, 2018), 531-537.

† Joint research with outside partners.

ISSP Activity Report 2018193

Wadati group
We succeeded in the observation of tensile-strain dependent spin states in epitaxial LaCoO3 thin films by using soft x-ray
RIXS in SPring-8 BL07LSU. We also started to use SACLA soft x-ray beam line and obtained second-harmonic generation of
GaFeO3.
1.

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).

2.

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).

3.

*Femtosecond resonant magneto-optical Kerr effect measurement on an ultrathin magnetic film in a soft X-ray freeelectron laser: S. Yamamoto, Y. Kubota, K. Yamamoto, Y. Takahashi, K. Maruyama, Y. Suzuki, R. Hobara, M. Fujisawa,D. Oshima, S. Owada, T. Togashi, K. Tono, M. Yabashi, Y. Hirata, S. Yamamoto, M. Kotsugi, H. Wadati, T. Kato,
S. Iwata, S. Shin and I. Matsuda, Jpn. J. Appl. Phys. 57 (2018) 09TD02 (1-4).
4.

†*Electronic Structure of Ce-Doped and -Undoped Nd CuO Superconducting Thin Films Studied by Hard X-Ray
2
4

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).
5.

*Element

6.

†*Tensile-Strain-Dependent Spin States in Epitaxial LaCoO Thin Films: Y. Yokoyama, Y. Yamasaki, M. Taguchi,
3

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).

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).
7.

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.

8.

*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.
9.

Magnetic and electronic properties of B-site-ordered double-perovskite oxide La2CrMnO6 thin films: K. Yoshimatsu,
J. Ishimaru, K. Watarai, K. Yamamoto, Y. Hirata, H. Wadati, Y. Takeda, K. Horiba, H. Kumigashira, O. Sakata and
A. Ohtomo, Phys. Rev. B 99 (2019) 235129 (1-8).

10. Photo-induced Spin Dynamics Revealed by Time-resolved Measurements with X-ray Free Electron Laser: K. Yamamotoand H. Wadati, Magnetics Jpn. 14, No.3 (2019) 140-145.

Kondo group
We use angle-resolved photoemission spectroscopy (ARPES) with ultrahigh energy resolution. The main findings in 2018 are
as follows: (1) a weak topological insulator state in α-Bi4I4, (2) Orbital-selective metal-insulator transition lifting the t2g bandhybridization in the Hund metal Sr3(Ru1-xMnx )2O7, and (3) Kondo hybridization and quantum criticality in β-YbAlB4.
1.

*Kondo hybridization and quantum criticality in β−YbAlB by laser ARPES: C. Bareille, S. Suzuki, M. Nakayama,
42.

†*Experimental Determination of the Topological Phase Diagram in Cerium Monopnictides: K. Kuroda, M. Ochi,

K. Kuroda, A. H. Nevidomskyy, Y. Matsumoto, S. Nakatsuji, T. Kondo and S. Shin, Phys. Rev. B 97 (2018) 045112(1-7).

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).
3.

*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.

* Joint research among groups within ISSP.

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4.

* 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.

5.

*Experimental Methods for Spin and Angle-Resolved Photoemission Spectroscpy Combined with Polarization Variable6.

*Orbital-selective metal-insulator transition lifting the t2g band hybridization in the Hund metal Sr (Ru Mn ) O :
3
1-x
x 2 7

Laser: K. Kuroda, K. Yaji, A. Harasawa, R. Noguchi, T. Kondo, F. Komori and S. Shin, JoVE 136 (2018) e57090.

M. Nakayama, T. Kondo, K. Kuroda, C. Bareille, M. D. Watson, S. Kunisada, R. Noguchi, T. K. Kim, M. Hoesch,
Y. Yoshida and S. Shin, Physical Review B 98 (2018) 161102(R).
7.
8.

*Rashba spin splitting of L-gap surface states on Ag(111) and Cu(111): K. Yaji, A. Harasawa, K. Kuroda, R. Li, B. Yan,

F. Komori and S. Shin, Physical Review B 98 (2018) 041404(R).

* 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.
9.

時間分解二光子光電子分光を用いたトポロジカル絶縁体表面状態における光ガルバニック効果の観測 : 黒田 健太 , 表面と真空 61 (2018) 302.

10. *A weak topological insulator state in quasi-one-dimensional bismuth iodide: R. Noguchi, T. Takahashi, K. Kuroda, M.
Ochi, T. Shirasawa, M. Sakano, C. Bareille, M. Nakayama, M. D. Watson, K. Yaji, A. Harasawa, H. Iwasawa, P. Dudin,
T. K. Kim, M. Hoesch, V. Kandyba, A. Giampietri, A. Barinov, S. Shin, R. Arita, T. Sasagawa and T. Kondo, Nature 566(2019) 518.
11. *Low-energy electron-mode couplings in the surface bands of Sr2RuO4 revealed by laser-based angle-resolved photoemission spectroscopy: S. Akebi, T. Kondo, M. Nakayama, K. Kuroda, S. Kunisada, H. Taniguchi, Y. Maeno and
S. Shin, Physical Review B 99 (2019) 081108(R).
12. †*Multiple topological states in iron-based superconductors: P. Zhang, Z. Wang, X. Wu, K. Yaji, Y. Ishida, Y. Kohama,
G. Dai, Y. Sun, C. Bareille, K. Kuroda, T. Kondo, K. Okazaki, K. Kindo, X. Wang, C. Jin, J. Hu, R. Thomale,
K. Sumida, S. Wu, K. Miyamoto, T. Okuda, H. Ding, G. D. Gu, T. Tamegai, T. Kawakami, M. Sato and S. Shin, Nature
Phys 15 (2019) 41-48.

Matsunaga group
Matsunaga group investigated light-matter interactions and light-induced nonequilibrium phenomena by utilizing terahertz(THz) wave, infrared, and visible light sources based on ultrafast pulsed laser technology. Polarization-sensitive THz timedomain spectroscopy system was developed with precision of several tens of micro rad between 0.5 and 2.0 THz frequency.
By using this system, terahertz anomalous Hall effect in quantum materials were investigated. High-frequency THz pulge
generation technique was also developed using Yb:KGW laser with 250 femtosecond pulse width. Novel pulse compression
technique using a series of quartz plates were developed and evaluated, and broadband THz generation up to several tens of THz
frequency with remarkable stability of carrier-envelope phase were realized.

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 2018, we have investigated the systematic S substitution dependence of the electronic structure of FeSe1-xSx in the superconducting state, and found strong evidence that this system is locatedin the BCS-BEC crossover regime. In addition, we have obtained strong evidence that Ta2NiSe5 is an excitonic insulator fromits dynamical behavior to photo-excitation, and found a photo-induced transition from an excitonic insulating state to an exotic
non-equilibrium semimetallic state in this material.
1.

†*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).
2.

3.

*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.
†*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.

† Joint research with outside partners.

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4.

*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).
5.

†*Superconducting Pairing of Topological Surface States in Bismuth Selenide Films on Niobium: D. Flötotto, Y. Ota,

6.

†*Photo-induced semimetallic states realised in electron–hole coupled insulators: K. Okazaki, Y. Ogawa, T. Suzuki,

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).

T. Yamamoto, T. Someya, S. Michimae, M. Watanabe, Y. Lu, M. Nohara, H. Takagi, N. Katayama, H. Sawa, M.
Fujisawa, T. Kanai, N. Ishii, J. Itatani, T. Mizokawa and S. Shin, Nat Commun 9 (2018) 4322 (1-6).
7.

†*Multiple topological states in iron-based superconductors: P. Zhang, Z. Wang, X. Wu, K. Yaji, Y. Ishida, Y. Kohama,

G. Dai, Y. Sun, C. Bareille, K. Kuroda, T. Kondo, K. Okazaki, K. Kindo, X. Wang, C. Jin, J. Hu, R. Thomale,
K. Sumida, S. Wu, K. Miyamoto, T. Okuda, H. Ding, G. D. Gu, T. Tamegai, T. Kawakami, M. Sato and S. Shin, Nature
Phys 15 (2019) 41-48.
† Joint research with outside partners.

* Joint research between groups within ISSP.

* Joint research among groups within ISSP.

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