2022Ⓒ 2023 The Institute for Solid State Physics, The University of Tokyo

Activity Report2022

Preface		1

Research Highlights		

2 - 33

Joint Research Highlights

34 - 51

Progress of Facilities		

52 - 59

Conferences and Workshops

60 - 63

Publications		

64 - 96

Subjects of Joint Research

97 - 149

Preface

We would like to present the annual activity reportof the Institute for Solid State Physics (ISSP) for theacademic year 2022. ISSP was established in 1957
as a joint usage/research institute affiliated with
the University of Tokyo. In every era, we strive tolead the frontiers of condensed matter physics andmaterials science and contribute to the developmentof science and technology from a basic research
perspective. In this report, we present a selection ofresearch outcomes produced by ISSP members andother researchers from our community who participated in joint research programs.
The first section of the report includes 32 research highlights from ISSP groups,
and the second section contains 16 highlights from joint research conducted by outside
researchers with the assistance of ISSP members using the joint-use program. The third
section details the development of the following facilities: Supercomputer Center, Neutron
Science Laboratory, International MegaGauss Science Laboratory, Center of Computational
Materials Science, Laser and Synchrotron Research Center, and Synchrotron Radiation
Laboratory. The fourth section provides a summary of seven conferences/workshops held by
ISSP in 2022. The publication and joint-use research topics lists conclude the document.
These activities demonstrate ISSP’s position as the global center of excellence incondensed matter physics and materials science and we appreciate the ongoing support andcooperation of the community to continue our activities.

July 2023

HIROI Zenji
Director of the Institute for Solid State Physics
The University of Tokyo

ISSP Activity Report 2022

1

Research Highlights
Ambipolar Nickel Dithiolene Complex
Semiconductors: from One to
Two-Dimensional Electronic Structures
Based upon Alkoxy Chain Lengths
Mori and Ozaki Groups
Molecular semiconductors, which are mainly basedon π-conjugated organic molecules are crucial materials
in fundamental research and electronics because they are
flexible, light-weight, and can be solution-processed ina cost-effective, energy-saving manner. Among them,materials that can transport both holes and electrons are
required for next-generation devices, such as organic lightemitting transistors and organic solar cells. Hence, materials
that physically combine hole- and electron-transporting
semiconductors in mixed or bi-layered forms have beenused as dual transporters. However, poor interfacial contact
between the two materials, where charge recombination or
separation occurs, often leads to poor quantum efficiencies
and reproducibilities. Instead, single-component ambipolar
semiconductors that can transport both holes and electrons
are promising materials capable of overcoming theseobstacles. Polymer-based materials, such as donor–acceptor
copolymers, exhibited ambipolar semiconducting characteristics. However, the structural inhomogeneity based on
the inevitable wide-ranged molecular weight distribution
severely hampered access to the structural insights and the
conduction mechanism, hampering the establishment of thematerials designing guidelines. Therefore, we focused on the
single-molecular-weight ambipolar organic semiconductorsthat offer excellent tunability of electronic structures andcrystallinity to access the structural insights and conduction
mechanism.
Our groups have designed and synthesized d/πconjugated molecules, Ni(4OR) [R = Me, Et, Pr] (Fig. 1)[1,3], in which the nickel element with d electrons playsa central role. These molecules are highly stable and do
not react easily with water or oxygen, and are also attractive because they can be easily synthesized using nickel,
which is a relatively inexpensive metallic material. In
addition to the electronic structure and properties, molecular
semiconductors with excellent carrier transport properties
requires seemingly contradictory properties: high crystallinity to enable highly ordered and highly dimensional
stacking states, and high solubility to realize excellent thinfilm processability. The research group searched for new
materials that fulfil these conditions among combinations ofd/π-conjugated backbone and side chains, and found a groupof d/π-conjugated molecules that achieve both.
Unexpectedly, it was found that slight differences in thenumber of carbons on the side chains dramatically changed
the stacking structure in single crystals. Those with one
carbon substituent exhibited a one-dimensional stacking

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ISSP Activity Report 2022

pattern, while those with two or three carbons exhibited aherringbone-type stacking pattern with a two-dimensional
electronic structure, which is advantageous for stabledevice operation (Fig. 1). The latter stacking pattern was
reproduced in thin films with a thickness of several tens ofnanometres, which were constructed by solution coating,and highly ordered crystalline thin films were successfully
realized. Field-effect transistor devices in which the resulting
thin films were inserted as semiconductor layers exhibited
ambipolar charge transport properties and showed highlevels of both carrier mobility (up to 10−2 cm2V−1s−1) andon-off ratio (105). These performances were demonstrated
in an open environment without the strict exclusion of waterand oxygen, enabling the realization of a new ambipolar
semiconductors with high stability, solution-dispensable andhigh mobility.
In summary, novel molecular ambipolar semiconductors,
Ni(4OR) [R = Me, Et, Pr], which are inexpensive and easy
to synthesize, resistant to reaction with water and oxygen,and possible to solution process, have been developed andexhibited excellent carrier mobility and on-off ratio. The
availability of structural information at the atomic level
has enabled detailed electronic structure and conduction
mechanism analysis, and has revealed molecular design
guidelines for superior semiconductors, which have notbeen established for polymer materials. In the future, it isFig. 1. (Top) Electronic structure requirements for ambipolar semiconductors used in field-effect transistors (FET), where the electronic
structure requirements imposed on p-type/n-type semiconductors must
be compatible with each other. (Bottom) Schematic diagram of thestructural formula of the novel complex developed in this study andits molecular stacking pattern. Single crystal X-ray structure analysis
revealed a dramatic modulation of the molecular stacking patternassociated with a slight extension of the side chains, and theoretical
calculations confirmed the acquisition of dimensionality (D) from 1D
to 2D.

expected that d/π-conjugated molecules will be developedby utilizing the high degree of structural freedom based on
the combination of the central metal and ligand towards hightransport properties through a higher-dimensional electronic
structure based on changes in stacking pattern according to
the number of carbons on the side chains. Such a detailed
material design strategy using molecular materials can beextended not only to electrically conductive materials but
also to various applications such as magnetic materials andphoto-functional materials and is expected to make a significant contribution to the development of next-generation
organic electronic devices.
References[1] M. Ito, T. Fujino, L. Zhang, S. Yokomori, T. Higashino, R. Makiura,
K. J. Takeno, T. Ozaki, and H. Mori, J. Am. Chem. Soc. 145, 2127
(2023).
[2] D. Zhang, S. Yokomori, R. Kameyama, C. Zhao, A. Ueda, L.
Zhang, R. Kumai, Y. Murakami, H. Meng, and H. Mori, ACS Appl.
Mater. Interfaces 13, 989 (2021).
[3] S. Yokomori, S. Dekura, A. Ueda, R. Kumai, Y. Murakami, and H.
Mori, J. Mater. Chem. 9, 10718 (2019).
Authors
M. Ito, T. Fujino, L. Zhang, S. Yokomori, T. Higashino, R. Makiura, K.
J. Takeno, T. Ozaki, and H. Mori

Quantized Thermoelectric Hall Effects
in Nodal-Line Semimetals
at the High-Magnetic-Field Quantum Limit
Osada GroupThe “quantized thermoelectric Hall effect (QTHE)”has been established theoretically and experimentally in
3D Dirac/Weyl semimetals with nodal points, at the highmagnetic-field quantum limit (QL). Reflecting their characteristic N = 0 chiral Landau subband (Fig. 1(a)), their
thermoelectric Hall conductivity αxy takes a constant value(Fig. 1(b)), which is independent of magnetic field andcarrier number, resulting in the boundless linear increase of
the Seebeck coefficient Sxx ~ αxy / σxy. This feature brings
about high-performance thermoelectricity. The more remarkable QTHE was proposed in the 2D massless Dirac fermion
system with nodal points at the QL. In this case, αxy takes
a quantized constant value of (4 log2) kB e / h, which is
independent of temperature, magnetic field, and carrier
density, so that the boundless increase of Sxx can be expectedeven at low temperatures. Here, we have theoretically andexperimentally investigated the possible QTHE in the 3D
topological semimetals with straight nodal lines at the QL.
First, we exhibited that the QTHE can more generally
appear even in a part of the 3D nodal-line semimetals in
addition to the nodal-point semimetals [1]. We consideredthe 3D semimetals with straight parallel nodal lines. For
example, they can be realized as multilayer systems where
2D massless Dirac fermion layers stack with weak interlayer
coupling. When the magnetic field is applied parallel tothe straight nodal lines, the N = 0 ground Landau subband(Fig. 1(c)), which consists of the N = 0 Landau level of each
2D layer, plays the similar role as the pair of the N = 0 chiralLandau subbands in Dirac/Weyl semimetals, and also causes
the similar QTHE (Fig. 1(d)). The constant value of αxy
contains the dispersion parameter, and it is proportional totemperature but independent of carrier density.
We quantitatively discussed the possible QTHE in

Fig. 1. Landau subband configuration and thermoelectric Hall conductivity αxy in (a)(b) Dirac/Weyl semimetals, (c)(d) straight nodal-line
semimetals, and (e)(f) graphite. The plateau due to the QTHE appears
in the QL region [1].

graphite as an example of the nodal-line semimetal [1]. In
3D graphite, the conduction and valence bands quadraticallytouch along the H-K-H edge of the Brillouin zone, forming
nodal lines. Based on the Landau subband configuration
obtained from the Slonczewski-Weiss-McClure model(Fig. 1(e)), we calculated αxy as a function of magnetic fieldand confirmed the QTHE plateau formation with the value
αxy(sheet) ~ 0.036 [K-1] T (kB e / h) per bilayer at the quasi-QL|Bz| > 8 T, where only two ground subbands (N’ = -1, 0)
locate at the Fermi level (Fig. 1(f)).
Next, we performed the thermoelectric measurement ongraphite to confirm the QTHE [2]. The resistivity (ρxx, ρxy)
and thermopower (Sxx, Sxy) were measured simultaneously
to compute αxy. We could successfully obtain the plateauof αxy at the quasi-QL (Fig. 2), which quantitatively agrees
with our calculation. In graphite, the Hall conductivity σxy
is not simply proportional to 1/B but shows complicatedB-dependence, so that the boundless increase of Sxx cannot
be observed.

Fig. 2. Thermoelectric Hall conductivity αxy measured in bulk graphite.
The QTHE plateau corresponding to the calculation (Fig. 1(f)) can beseen above 8 T [2].

ISSP Activity Report 20223

In addition, we theoretically investigated the quantum
size effect on the QTHE in thin-film graphite [1]. When the
thickness of graphite is decreased, the Landau subbands is
discretized into many levels by the quantization of the interlayer wave number. This causes the dimensional crossover ofthe QTHE from 3D to 2D.
References[1] T. Osada, T. Ochi, and T. Taen, J. Phys. Soc. Jpn. 91, 063701(2022).
[2] A. Kiswandhi, T. Ochi, T. Taen, M. Sato, K. Uchida, and T. Osada,Phys. Rev. B 107, 195106 (2023).
Authors
T. Osada, A. Kiswandhi, T. Ochi, M. Sato, K. Uchida, and T. Taen

Topological Thermal Hall Effect ofMagnons in Magnetic Skyrmion Lattice
Yamashita Group
Currently, research on the effects of emergent magnetic
fields created by spin structures in solids is attracting muchattention. This is because such emergent magnetic fields

Fig. 1. (a) A schematic illustration of the topological thermal Hall
effect of magnons in the lattice of magnetic skyrmions. The flow of themagnons is bent by the emergent magnetic field produced by the vortex
spin texture of the magnetic skyrmions. (b) The magnetic field dependence of the thermal Hall conductivity (κxy). A finite κxy sharply appears
in the magnetic skyrmion phase (green shared area), but disappears in
the cycloidal (blue) and the forced-ferromagnetic (pink) phases. (c) Acolor plot of κxy /T observed in the magnetization process (“|B| up”).

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ISSP Activity Report 2022

directly affect the wave function of electrons, giving rise
to more drastic effects on electrons than those caused by
an external magnetic field. One of the most celebrated
examples is the emergent magnetic field produced by amagnetic skyrmion – a vortex texture of spins in a magnetic
solid (see Fig. 1(a)). For conduction electrons in a metal,
it is well known that the topological Hall effect is given by
the emergent magnetic field of the magnetic skyrmions ofwhich the field strength is equivalent to several hundred teslain external magnetic field. On the other hand, it has been
unknown how the emergent field acts on charge-neutral heat
carriers in insulators, such as magnons and phonons.
In this study [1], we investigated in detail the thermaltransport properties in GaV4Se8, a ferromagnetic insulator
in which a magnetic cycloidal phase at zero-field below theCurie temperature is transformed into a magnetic skyrmion
phase by applying a magnetic field (Fig. 1(c)). We findthat, whereas the thermal Hall effect is absent both in thecycloidal and the forced-ferromagnetic phases, a clear
thermal Hall effect appears in the magnetic skyrmion phase(Fig. 1(b)). A color plot of the thermal Hall conductivity (κxy)
demonstrates the position of the magnetic skyrmion phasein the B–T phase diagram as shown in Fig. 1(c). In addition,
the thermal Hall signal is increased by increasing the domain
volume of the magnetic skyrmion phase by cooling thesample under a magnetic field through the structural phasetransition. These results indicate that the observed thermal
Hall signal is caused by the emergent magnetic field of themagnetic skyrmion lattice.
We confirm that this is indeed the case by theoreticallycalculating the heat transport of the magnons in the magnetic
skyrmion lattice. We find that the calculated magnon bands,
which are folded by the lattice of the magnetic skyrmions,acquire non-trivial Chern number. In particular, as shown by
the Fig. 2(a), the magnon bands around the top of the lowest

Fig. 2. (a) Energy bands of the magnons in the lattice of magnetic
skyrmions along high-symmetry points. Color denotes the Berry curvature that is normalized in each band. (b) Temperature dependence ofκxy/T by calculation (solid line) and experiments (symbols). Experimental data obtained at 0.36 T in the magnetizing (|B| up) and 0.2 T
in the demagnetizing (|B| down) processes are shown in red and blue
circles, respectively. To fit with the theoretical result, the horizontal
axis of the experimental data is normalized by the Curie temperature TC= 20 K. See [1] for more details.

magnon band have a large Berry curvature (“high-Ω spot” inFig. 2(a)), giving rise to the topological thermal Hall effectof the magnons. Based on this magnon band calculation, we
estimate the temperature dependence of κxy, and find that our
calculation well reproduces the experimental result observedin the demagnetization process (see the green solid line andthe blue data in Fig. 2(b)). On the other hand, κxy observedin the magnetization process shows a very different temperature dependence that persists at lower temperature than
κxy in the demagnetization process (red data in Fig. 2(b)).
This unexpected hysteresis might indicate that the latticeof the magnetic skyrmion is more disordered in the magnetization process, suggesting a difference in the skyrmion
lattice depending on whether it is formed from the forcedferromagnetic phase or the cycloidal phase. Although thispossibility should be scrutinized by future measurements ofthe skyrmion lattice, this hysteresis in κxy shows a high sensitivity of the thermal Hall measurements for the skyrmion
lattice structure not attainable by other measurements.
Reference[1] M. Akazawa, H.-Y. Lee, H. Takeda, Y. Fujima, Y. Tokunaga, T.
Arima, J. H. Han, and M. Yamashita, Phys. Rev. Research 4, 043085(2022).
Authors
M. Akazawa, H.-Y. Leea, H. Takeda, Y. Fujimab, Y. Tokunagab, T.
Arimab, J. H. Hanc, and M. Yamashita
aKorea University
bUniversity of Tokyo
cSungkyunkwan University

Enhanced Bulk Photovoltaic Effectin Strained 3R-MoS2
Ideue Group
Bulk photovoltaic effect, which indicates the generationof spontaneous photocurrent in uniform materials instead of
conventional p-n junctions, is attracting considerable interest
due to its microscopic origins related to the electronic band
topology or geometry as well as its potential to achieve ahigh solar energy conversion efficiency. So far, bulk photovoltaic effect has been reported in a variety of noncentrosymmetric quantum materials and several strategies to enhance
the photocurrent magnitude are also developed. Amongthem, strain application is a simple method for controllingthe crystal structures or electronic states and thus an effective
way for realizing the enhanced photovoltaic signals.
In this work, we studied the effect of uniaxial strain
on the bulk photovoltaic effect in van der Waals layered
semiconductor 3R-MoS2. Without strain, 3R-MoS2 has anoncentrosymmetric trigonal crystal structure (Fig.1 (a)).
Although it exhibits the photoconductivity, which indicatesthe enhancement of conductivity under the illuminationof light, zero-bias photocurrent is negligibly small (Fig. 1(b)). By transferring the exfoliated flake of 3R-MoS2 on apre-patterned substrate consisting of two parallel steps andpushing it so that flake stretches and gets in contact withthe bottom substrate part, we applied the uniaxial strain on
3R-MoS2 (Fig. 1 (c)). In strained samples, symmetry of thecrystal is reduced and electronic polarization appears (inset
of Fig. 1 (c)). We found that zero-bias photocurrent is largely
enhanced in such strained samples (Fig. 1 (d)). We confirmedthat photocurrent appears when the light is illuminated at thecenter of the device away from the electrodes and flows only

Fig. 1. (a)Crystal structure (top view) of 3R-MoS2. Green dashed lines
indicate the mirror planes. (b) The I-V characteristic of an unstrained
3R-MoS2 device. (c) Schematic of photocurrent measurement in astrained 3R-MoS2 device. (d) The I-V characteristic of a strained
3R-MoS2 device.

along the direction parallel to the electronic polarization. It
is also observed that the magnitude of the zero-bias photocurrent increases in a nonlinear manner with the value of
uniaxial strain. These results implies that the observed zerobias photocurrent is the intrinsic bulk photovoltaic effect andthe emergence of the electronic polarization is essential toenhance the bulk photovoltaic effect.
We further studied the detailed light power dependence
and photon energy dependence of the bulk photovoltaic
effect. The light power dependence of the photocurrent
shows the characteristic crossover, evolving from a linear
relation to a nonlinear manner while increasing the lightintensity. The photon energy dependence of the zero-bias
photocurrent exhibits the non-monotonic behavior differently
from the absorption spectrum. These behaviors can be well
explained by the shift current, which is one of the origins ofbulk photovoltaic effect related to the geometrical properties (Berry connection or shift vector) of the wave function
and arises from the shift of the wave packet under the opticaltransition.
In summary, we have demonstrated the gigantic enhancement of bulk photovoltaic effect by uniaxial strain in vander Waals layered semiconductor 3R-MoS2. This work
clarifies the important role of symmetry reduction andthe induced electric polarization for the large photocurrent generation, enriching our knowledge concerning the
microscopic mechanism of bulk photovoltaic effect in
non-centrosymmetric systems. Present results also indicatethat strain application is a powerful method to control thesymmetries, geometric properties of the electronic wave
function, and resultant physical properties of flexible layeredmaterials.
Reference[1] Y. Dong, M. Yang, M. Yoshii, S. Matsuoka, S. Kitamura, T.
Haswgawa, N. Ogawa, T. Morimoto, T. Ideue, and Y. Iwasa, Nat.
Nanotechnol. 18, 36 (2023).
Authors
Y. Donga, M. Yangb,c, M. Yoshiia, S. Matsuokaa,d, S. Kitamuraa, T.
Haswgawaa, N. Ogawab, T. Morimotoa, T. Ideue, and Y. Iwasaa,baThe University of Tokyo
bRIKEN Center for Emergent Matter Science (CEMS)
cThe University of Warwick
dNagasaki University

ISSP Activity Report 20225

Spin Hall Magnetoresistancein Quasi-Two-Dimensional
Antiferromagnetic-Insulator/Metal Bilayer Systems
Kato Group
Recently, a novel type of magnetoresistance, called spin
Hall magnetoresistance (SMR), has been attracting muchattention. SMR was first observed in a normal metal (NM)/ferromagnetic insulator bilayer [1] and subsequently in a
NM/antiferromagnetic insulator (AFI) bilayer [2]. Because
SMR reflects information on the FI magnetization or AFI
Néel vector, it can be utilized for detecting the orientation ofordered spins in magnetic materials. Although the existing
theory [1,3] succeeds in explaining the qualitative featuresof SMR measurements, it could not explain the temperaturedependence of the SMR signal. Recently, a microscopic
theory using Green's function has been constructed [4].
This microscopic theory describes SMR in terms of local
spin susceptibilities of the FI(AFI). It can include dynamic

processes such as magnon absorption and emission responsible for a nontrivial sign change in the SMR signal, which
are neglected in the semiclassical theory.
In this study, we numerically calculated SMR by using aquantum Monte Carlo method [5] for a NM/AFI bilayer (seeFig. 1 (a)). We utilized an improved method for accurately
obtaining the integral of the local spin susceptibilities fromthe QMC data without using numerical analytic continuation.
We evaluated the detailed temperature dependence of SMR
for S = 1/2 and S = 1 spin systems on a two-dimensionalsquare lattice and a quasi-two-dimensional cubic lattice witha finite number of layers.
Figure 1 (b) shows the spin conductance, which is
proportional to the SMR signal, for the S = 1/2 quasi-twodimensional quantum Heisenberg model on a 16 × 16 × W(W = 2, 4, 6) cubic lattice. As the thickness W increases,
the ordering temperature (indicated by the green arrows)
increases. The spin conductance induced below thetransition temperature becomes large while it vanishes
above the transition temperature. We find that the peakof the spin conductance is greatly enhanced comparedwith that for a single-layer spin system (not shown).
Although the maximum of the spin conductance increases
with increasing thickness W, the difference between the
results for W = 4 and 6 is much smaller than that for
W = 2 and 4. Figure 1 (c) shows the SMR signal for theS = 1 quasi-two-dimensional quantum Heisenberg model on
a 16 × 16 × W (W = 2, 4, 6) cubic lattice. As the thickness W
increases, the ordering temperature (indicated by the green
arrows) raises and the SMR signal becomes large. Above
the transition temperature, the SMR signal becomes small
but remains finite, in contrast with the case of S = 1/2. We
showed that this feature can be understood well by the hightemperature expansion. As the temperature decreases below
the ordering temperature, the SMR signal increases, takes
a maximum roughly at three-fifths of the ordering temperature, and then decreases. The maximum value of the signal
is rather larger than in the case of S = 1/2. At sufficiently low
temperatures, the SMR signal becomes negative, as predictedby the spin-wave approximation. We also discussed theeffect of the disordered exchange interactions.
In our study, we succeeded in clarifying the qualitative
features of SMR based on the numerical results. These qualitative features are expected to be observed experimentally.
Our simulation using a simplified model is expected to be auseful starting point for understanding SMR in quasi-twodimensional quantum spin systems.
References[1] H. Nakayama et al., Phys. Rev. Lett. 110, 206601 (2013).
[2] D. Hou et al., Phys. Rev. Lett. 118, 147202 (2017).
[3] Y. T. Chen et al., Phys. Rev. B 87, 144411 (2013).
[4] T. Kato, Y. Ohnuma, and M. Matsuo, Phys. Rev. B 102, 094437(2020).
[5] T. Ishikawa, M. Matsuo, and T. Kato, Phys. Rev. B 107, 054426(2023).
Authors
T. Ishikawa, M. Matsuo, and T. Kato

Fig. 1. (a) Illustration of spin Hall magnetoresistance. Spin absorption
at the interface changes according to the orientation of the Néel vectorof the antiferromagnetic insulator, and the magnitude of the magnetoresistance changes. (b,c) Temperature dependences of spin conductance
ΔG are shown for (b) S = 1/2 and (c) S = 1 quantum Heisenberg model.
The two contributions, ΔGxy and ΔGz, are plotted separately.

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ISSP Activity Report 2022

Shear-Strain Controlled High-Harmonic
Generation in Graphene
Kato and Akiyama Groups
Two-dimensional (2D) Dirac electrons in single-layer
graphene have attracted much attention for their novel linear
and nonlinear optical properties. One-atom-thick graphene
exhibits universal frequency-independent light absorption,πα = 2.3%, where α = e2/ħc ≈ 1/137 is the fine structure
constant [1]. Ultrafast carrier dynamics on massless bands
provide a variety of high-speed broadband optical responses.
Further studies have targeted artificial control, modulation,or switching of these properties for potential applications
in graphene-based optical devices. However, the robustness of optical transition probability πα inherent to 2D Dirac
electrons makes the external control of optical responses

highly challenging.
A graphene sheet has high flexibility and a shear strainof up to 27% can be reversibly applied to it [2]. This strain
effect should be useful for control of the nonlinear opticalresponses of graphene. In this study [3], we theoreticallydemonstrated a significant enhancement or quenching of
HHG over several orders of magnitude in graphene by tuning
the shear strain and the incident-light polarization angle(Fig. 1 (a)).
We show the shear-strain dependences of the third andfifth harmonics in Fig. 1 (b) and (c). The red and green
lines indicate the dependences for the different incidentlight polarization angles, θ = 120˚ and θ = 30˚, respectively(for definition of theta, see Fig. 1 (a)). These two angles
are regarded as the specific ones because they can yield the
maximum and minimum intensities of the emitted harmonics(see insets in Fig. 1 (b) and (c)). Fig. 1 (b) and (c) show
that, for θ = 120˚, the third-order (fifth-order) harmonics
are largely enhanced by around one order of magnitude atζ ≈ 0.13 and 0.18, while they are quenched rapidly by aroundthird (eight) orders of magnitude at 0.2 < ζ < 0.27 (red line),
where ζ is the amplitude of the shear strain. The plots forθ = 30˚ do not show this nonmonotonic behaviour; they only
show an approximately monotonic decrease with increasing
shear strain. By using linear response theory, we showed thatthe HHG enhancement came from the resonances at which
the incident-light photon energy matches the saddle-point
energy or the band gap [3]. In addition, the dipole moment
near the saddle point (or the band gap) plays an importantrole in the polarization angle dependence of this enhancement. Strong quenching of HHG was induced by rapid
growth of the band-gap energy with increasing shear strain.
In conclusion, we theoretically investigated the linear
and nonlinear optical responses of graphene distorted byshear strain. Using the tight-binding model, we clarified thattuning both the shear strain and the polarization angle ofthe incident THz light enables a significant enhancement or
quenching of HHG. Our findings suggest the possibility ofusing shear strain to control HHG in graphene and pave theway for optical nanotechnology of single-layer materials.
References[1] R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J.
Booth, T. Stauber, N. M. Peres, and A. K. Geim, Science 320, 1308
(2008).
[2] Z. Peng, X. Chen, Y. Fan, D. J. Srolovitz, and D. Lei, Light: Sci.
Appl. 9, 190 (2020).
[3] T. Tamaya, H. Akiyama, and T. Kato, Phys. Rev. B 107, L081405(2023).
Authors
T. Tamaya, H. Akiyama, and T. Kato

Visualizing Magnetization c Domain
Structure with Heat Injection Using
Atomic Force Microcopy
Fig. 1. (a) Schematic figure of lattice structure of graphene under shear
strain. The amplitude of the shear strain is represented by ζ and thevector potential of the incident light is denoted as A(t), whose tilt angle
measured from the armchair axis is described by θ (see the inset). (b)Shear strain dependence of the third- and fifth-order harmonics. The red
and green lines indicate the high-harmonic intensities for the incidentlight angles θ = 120˚ and θ = 30˚, respectively. The polarization angle
dependences of the third and fifth harmonics for ζ = 0.12 are shownin the insets. The critical strength of the shear strain for a band gap toform is described by ζc.

Otani Group
Magnetic imaging plays a crucial role in studying themagnetism of materials. Its significance has been growing
with the rapid development of topological magnetic
materials. For instance, the magnetic domain structure of theantiferromagnetic Weyl semimetal Mn3Sn [1] is intriguingfrom the magnetothermoelectric application point of view.

ISSP Activity Report 2022

7

Fig. 1. (a) Conceptual drawing of magnetic imaging. (b) Device structure and electric configuration of the measurement.

However, the methods with enough high spatial resolution
usually require costly instruments. Here, we report a simple
magnetic imaging method using an atomic force microscope(AFM) with a sub-100-nm resolution, in which we measure
the locally induced anomalous Nernst effect (ANE).
Figure 1(a) illustrates the concept of our method. The
Joule effect of the heater causes a non-equilibrium temperature distribution in the sample nanowire. An AFM tip contact
creates a local vertical temperature gradient ∇zT in a sample.
The ANE is expressed as EANE = SANE(m × ∇T ), where
EANE, SANE, m are the electric field induced by ANE, themagnitude of ANE, and the unit vector of the magnetization, respectively. If the magnetization under the tip points
to the wire width direction (the y-direction), the ANE causes
a voltage along the x-direction. Therefore, the tip-induced
ANE voltage represents the y-component of the local magnetization.
We demonstrate this method on the ferromagnetic Weyl
semimetal Co2MnGa that exhibits large ANE (SANE ~ 5 μV/K)[2]. The topographic image of the sample and the electricmeasurement configuration are shown in Fig. 1(b). We apply
an alternating current to the heater and measure the voltage
across the sample wire at the second harmonic frequency. We
map the voltage during the scan with the contact mode. We
conduct the experiment in an atmosphere at room temperature. The result of the voltage mapping Figure 2(a), (b), and(c) represents the results under the external magnetic fieldalong the y-direction of +134 mT, −17 mT, and −134 mT,
respectively. With +134 mT, a uniformly positive voltage
is obtained. The magnitude of the signal is proportional to
the square of the current. The signal reverses its sign with−134 mT. These results indicate that the voltage is attributable to the ANE. With −17 mT, a pair of bright and dark
spots (positive and negative voltage) appeared near thecenter of the sample wire. This reflects the presence of a
180° magnetic domain wall. The bottom row of Fig. 2 shows
the results of micromagnetic simulation in the Co2MnGawith each magnetic field obtained by OOMMF. One can see
a good agreement between the experimental and simulation results. We estimated the spatial resolution to ~ 80 nm
from the edge response of the ANE voltage. Using same
technique, we saw a magnetic signal on the permalloy(Ni80Fe20) nanowire. Therefore, our method applies to theantiferromagnetic Weyl semimetal Mn3Sn (SANE ~ 0.5 μV/K).
We develop a simple method for magnetic imaging [3].
Our method only requires a conventional atomic force microscope with a high spatial resolution. Moreover, our technique
can apply to antiferromagnetic Weyl semimetals that exhibit
the anomalous Nernst effect.
References[1] S. Nakatsuji and R. Arita, Annu. Rev. Condens. Matter Phys. 13,
119 (2022).
[2] A. Sakai et al., Nat. Phys. 14, 1119 (2018).
[3] N. Budai, H. Isshiki, R. Uesugi, Z. Zhu, T. Higo, S. Nakatsuji, andY. Otani, Appl. Phys. Lett. 122, (2023).
Authors
H. Isshiki, and Y. Otani

Microscopic Views of Quantum Phase
Transition in Disorder-Controlled
2D Superconductors
Hasegawa Group

Fig. 2. The results of anomalous Nernst voltage mapping with (a)+134 mT, (b) −17 mT and (c) −134 mT.

8ISSP Activity Report 2022

Disorder-induced superconductor-insulator transition (SIT) in the two-dimensional (2D) systems has been asubject of extensive studies as one of typical examples ofquantum phase transitions (QPT). Recent advancements
in fabricating highly crystalline 2D systems revealed theunexpected quantum phases, such as anomalous metallic
state and quantum Griffiths phase, around QPT. The originsof the new quantum phases are still uncovered partly
because of lack of microscopic pictures. Here, by performing
scanning tunnelling spectroscopy (STM) at low temperature(0.36 K) on highly-crystalline monoatomic-layer superconductors, we elucidated these quantum phases in real space
microscopically.
In the present work we used one of the Pb-monolayer
superconducting phases called striped incommensurate (SIC)
phase formed on vicinal Si(111) substrates. On the vicinal
substrates single-layer-height steps, which work as a disorder[1,2], are regularly aligned, and the density of steps can beFig. 1. (left) Temperature dependence of sheet resistance R measured
on the 1.1°-tilted vicinal sample under out-of-plane magnetic fields of0, 25, 50, 100, 150, 200, 300 and 500 mT. (right) B-T phase diagram
obtained from the data shown in the left panel. AM: anomalous metallic
phase, TVL: thermal vortex liquid phase, TF: thermal-fluctuationinduced metallic phase..

controlled precisely with the miscut angle. We investigated
how the disorder in the superconducting layers affects thepresence of the quantum phases.
First we performed in situ (in ultrahigh vacuum) transport measurements on the SIC phases formed on 1.1°-tilted
vicinal substrates (Fig. 1). The terrace spacing for the vicinal
substrate is 16 nm, shorter than the coherence length of thesystem (38 nm). The superconducting critical temperatures
Tc of the vicinal samples are 1.21 K, slightly lower than theflat sample (1.53 K). Under out-of-plane magnetic fields
below the critical field Bc2, the sample exhibits non-zeroresistance near zero temperature, indicating the presenceof anomalous (quantum) metallic phase, which is often
explained with the quantum motion of vortices. From the
Arrhenius plots of the sheet resistance R, we determinedthe crossover temperature between the regions where thequantum and thermal vortex motions are dominant.
Outside of the superconducting regime, metallic phases(dR/dT > 0) are observed. Whereas the thermal-fluctuationinduced metallic (paraconductivity) phases are found above
Tc, the quantum-fluctuation (QF)-induced metallic phase,
which appears above Bc2 near T = 0, appears only on the flat
sample, was not observed on the vicinal sample. The absenceof the QF-induced metallic phase on the step-abundantsample is consistent with the fact that the QF-induced
metallic phase, which is often attributed to quantum Griffith
phase, is only observed on highly-crystalline monolayer
samples.
Then, we performed STM observation at low temperature (T = 0.36 K). Figure 2 shows the results taken on thevicinal sample. Figure 2(a) is an STM image showing
equally-spaced steps on the surface. Figure 2(b)-2(l) aremaps showing the spatial distribution of the superconducting gap under various out-of-plane magnetic fields B.
At B = 120 mT, individual oval vortices elongated along thesteps are observed. The oval shape is due to the Josephson

Fig. 2. (a) STM image taken on Pb monoatomic-layer SIC phaseformed on 1.1°-tilted vicinal Si(111) substrate. (b-l) Superconducting
gap depth maps under various out-of-plane magnetic fields on the same
area as (a).

coupling at the steps and explained as Josephson-Abrikosov
vortices [2]. By increasing B to 180 mT, vortices are significantly overlapped each other but still individual vortices
are recognized, but at B = 270 mT individual vortices are
not observable any more. Bc2 can be estimated from the gap
evolution with B outside of the vortices and found Bc2 =355 mT, which is consistent with that obtained by the transport measurement (Black square in the phase diagram of Fig.
1 corresponds to the Bc2 by STM.). In the range of 270 mT< B < Bc2, the density of vortices should increase with B andin fact averaged gap depth decreases, but individual vortices
cannot be seen. The indistinct vortices are, therefore, due
to liquidation of vortices. Above Bc2, we still observed thegap remaining, and the pseudo gap disappears around B =500 mT.
According to the phase diagram obtained by the transportmeasurement (right panel of Fig. 1), under 30 mT < B < 120mT finite resistance is observed and thus anomalous metallic
phase should be there at T = 0.36 K. However, in STM,
we observed individual vortices, indicating the presence ofshort-range order of the vortex arrangement, at least. The
regime is, therefore, the quantum creep phase, and the finite
resistance is likely generated due to the vortex motions
induced by infinitesimal current for the transport measurement.
We performed the same measurements on the flat sample
and basically the same results were obtained in the low B
range. Curiously, however, the vortex liquid phase was notobserved on the flat sample. The vortex liquidation, which
we believe induced by the quantum fluctuation, occurs
only under the presence of phase fluctuation induced by thedisorder.
Under B higher then Bc2, we observed a pseudo gap on
both flat and vicinal samples. This implies that the localized
Cooper pairs are formed, presumably by quantum fluctuation, regardless of the degree of disorder. Depending on the
degree of disorder, however, the amount of the localization isdifferent, making the system metallic or insulating dependingon the amount of disorder.
References[1] S. Yoshizawa et al., Phys. Rev. Lett. 113, 247004 (2014).
[2] Y. Sato et al., Phys. Rev. Lett 130, 106002 (2023).
Authors
Y. Sato, M. Haze, S. Yoshizawaa, T. Uchihashia and Y. Hasegawa
aNational Institute for Materials Science

Machine Learning for
Structural Phase Mapping
Lippmaa Group
Structural phase analysis in thin film materials development is usually done by ex-situ x-ray diffraction (XRD)
after the film growth is finished. The XRD analysis typicallytakes longer than the film synthesis and the XRD analysis
provides an average composition of the whole film volume
without being able to distinguish which phases that occur atthe surface or at the substrate interface. An alternative structure analysis method is in-situ reflection high-energy electron
diffraction (RHEED), which provides structural informationon the surface of the film in real time during growth. While
this makes RHEED an attractive alternative to XRD, manual

ISSP Activity Report 2022

9

analysis of RHEED patterns to determine the phase composition is generally time-consuming and thus rarely used forcontemporaneous structure analysis with film growth.
We have developed a machine learning workflow toautomatically detect and locate various diffraction featuresin complex diffraction patterns. We use the U-Net neuralnetwork segmentation algorithm to quickly determine wherediffraction spots and streaks occur in a diffraction pattern,
as illustrated in Fig. 1. The neural network has to be trained
before such image segmentation is possible. For this purpose,
we collect a large number of visually different diffraction
patterns and hand-label those training patterns, manuallymarking the position of each diffraction spot and streak.
The training image set is then used to train the U-Net torecognize the desired features in typical RHEED patterns.
As shown in Fig. 1, U-Net can reliably distinguish between
overlapping spots and streaks and can find even very weakfeatures that are difficult to detect by eye.
The U-Net segmentation tool produces mask patterns. As
the next step in the workflow, the original image intensity
distribution is examined in each mask area. For example, it
is possible to integrate the intensity in the vertical directionin each mask area and examine the resulting cross-section
plots by peak fitting to determine accurate horizontal diffraction feature positions. The feature spacing corresponds to the
distance between neighboring reciprocal space points andcan thus be used to calculate the in-plane lattice parameter.
In case the surface contains a mixture of phases, multiple
spot or streak periodicities will appear on the surface. An
iterative approach was developed to extract all base periodicities from a complex image, providing a list of periodicities. The total diffraction intensity corresponding to eachbas distance is then used to calculate the phase composition
ratios.
A series of thin film FeOx samples was synthesized overa broad range of film growth temperatures and ambient
oxygen pressures. The RHEED patterns of all films
were analyzed using the automated composition analysis
workflow. This produced for each synthesis phase spacepoint a descriptor containing information on the phase lattice
parameters and the associated relative diffraction intensities.
Clustering was then used to form a phase map as shown in
Fig. 2, where a pie diagram at each synthesis point represents
the relative intensities of each clustered lattice parameter.
The mapping result shows that hematite Fe2O3 (green)
dominates the film composition in the 600 to 800 °C range,
while magnetite Fe3O4 (pink) appears at both lower andhigher temperatures. This result was verified by later x-ray

Fig. 2. A phase diagram constructed by automated RHEED patternanalysis for FeOx phase formation in thin films grown at various
oxygen pressures and temperatures. The marker colors correspondto various lattice periodicities. The center region is mostly hematite(green), while magnetite (pink) appears at both low and highgrowth temperatures.

diffraction analysis. Under thermodynamic equilibrium
conditions, a monotonic change from magnetite at higher
growth temperatures to hematite at lower temperatures
would have been expected. The non-monotonic phasecomposition variation shows the importance of kinetic
effects in thin film growth.
The RHEED phase mapping thus produces an equivalent
result to XRD analysis, but RHEED mapping can be done
in-situ in near-real-time. The machine learning workflow
thus creates a new way to use RHEED for automated phaseformation analysis and real-time phase evolution tracking
during thin film growth.
Reference[1] H. Liang, V. Stanev, A. G. Kusne, Y. Tsukahara, K. Ito, R.
Takahashi, M. Lippmaa, and I. Takeuchi, Phys. Rev. Materials 6,063805 (2022).
Authors
H. Lianga, V. Staneva,b, A. G. Kusnea,c, Y. Tsukaharad, K. Itod, R.
Takahashid, M. Lippmaa, and I. Takeuchia
aUniversity of MarylandbAstraZeneca
cNIST
dNihon University

Elucidation of the Atomic-Scale Processesof Dissociative Adsorption and Spilloverof Hydrogen on the Single Atom Alloy
Catalyst Pd/Cu(111)
Yoshinobu and Ozaki Groups

Fig. 1. (a) Schematic diagram of the U-Net model used for semantic
segmentation of RHEED patterns. (b) and example pattern of ahematite film. (c) Masks for diffraction spots (gray) and streaks(orange) generated by the neural network model.

10

ISSP Activity Report 2022

The utilization of hydrogen in industry has become more
important for our modern society because many indispensable processes consist of chemical reactions involvinghydrogen: synthesis of chemical feedstocks such as methanol
and ammonia, petroleum refining, energy sources throughfuel cell systems, and so forth. In these reactions, dissociation of molecular hydrogen is an essential elementary step inhydrogenation reactions, where the active sites for hydrogendissociation are necessary. In recent years, single atom alloy
catalysts (SAACs) have been attracting much attention due
to their excellent properties, such as high activity/selectivity
and resistance to deactivation via coke formation or CO
poisoning. In SAACs, active metal atoms are highly diluted
and atomically dispersed on an inert but selective metal
surface. Several previous studies have shown that the Pd/

Fig. 1. (Up) Schematic models of the dissociative adsorption and spillover of hydrogen on Pd/Cu(111) as a function of coverage (Middle)
Vibrational spectra of the Cu-H stretching mode (Bottom) Photoelectron spectra of Pd3d5/2

Cu SAAC shows excellent activity for hydrogen dissociation and hydrogenation reactions. On the Pd/Cu SAACs,
the hydrogen spillover from Pd sites onto Cu host surfaces
is a vital process for selective hydrogenation because it has
been considered that the reaction proceeds on the Cu surface
which weakly interacts with the product molecules.
We investigated the dissociative adsorption of hydrogenand the subsequent spillover process on the Pd/Cu(111)
surface using infrared reflection absorption spectroscopy(IRAS), temperature programmed desorption (TPD),
and high-resolution X-ray photoelectron spectroscopy(HR-XPS), as well as density functional (DFT) calculations[1]. The hydrogen spillover onto Cu(111) was successfully
observed in real time using time-resolved IRAS measurements. The chemical shifts of Pd 3d5/2 indicate that molecular hydrogen is dissociated and adsorbed at the Pd site. In
addition, “two-step” chemical shifts of the Pd 3d5/2 binding
energy were observed as a function of hydrogen exposure.
The DFT calculation revealed that the “two-step” chemical
shifts originate from the charge transfer (CT) from Pd tohydrogen; initially hydrogen atoms are directly adsorbed at
the Pd site, and thereafter a significant amount of additionalhydrogen atoms are adsorbed at the Cu sites in which CT
occurs in an indirect manner. Based on the present experimental and theoretical results, we propose the following
mechanism of the hydrogen dissociation and spillover
process on Pd-Cu(111) : (i) a hydrogen molecule is dissociated at a Pd site, and the hydrogen atoms are adsorbed on
the Pd site, (ii) the number of hydrogen atoms on the Pd site
increases up to three, and (iii) the additional hydrogen atoms
spill over onto the Cu surface.

neous interfaces of defective materials. Typical example isthe defective oxides interfaced with solutions used for theelectrocatalysis application. Recent experiments show thatboth zirconia and titania cathodes provide enhanced electromotive force of fuel cells when they contain nitrogen impurities and oxygen vacancies, but the microscopic structure of
the electrode-electrolyte interface is not well understood. In
this context, we use the large supercomputers such as Fugaku
and the recently developed programs such as abICS [1] toperform ab initio Monte Carlo (MC) and molecular dynamics
simulations to model the interface by sampling unprecedentedly large degrees of freedom. Note that abICS does
not simply generate the ab initio trajectories, but also help
enhance the sampling by machine learning the generated
trajectories to significantly speed up the simulation. We usedthem to address the problem of understanding the reason for
the improved fuel cell efficiency. In our approach, we firstsimulated the zirconia surface and then the zirconia-waterinterface.
Our previous simulation has revealed that an oxygen
vacancy can be stabilized when doped with two times denser
nitrogen impurities because of the charge compensation
effect. The surface simulation showed that the vacancies
are distributed not only at the surface but also in the subsurface regions, while the nitrogen impurities do not favor thesurface sites. Based on this result, we reduced the size of themodel surface so that we can examine all possible configurations of the ORR intermediates, i.e., O2*, O2H*, OH*, andO*, where * means adsorbed species. The resulting adsorption energies were used to obtain the free energy profile. The
result showed that an oxygen molecule can be efficiently
reduced to form water molecules on the vacancy site, withthe activity comparable to that of the platinum electrode[2]. The activity was estimated thermodynamically using
the empirical assumption that the barrier existing between
the reaction intermediates does not play a role. Importantly,
the estimated activity was found to be comparable to that of
the non-defective surface. This result should be interpretedwith caution. Considering the low availability of the active
defects, we can conclude that the overall rate of ORR islikely to be higher for the non-defective surface, although wecannot rule out the possibility that we have missed importantconfigurations due to the finite cell size and time used for thesimulation. The apparent inconsistency with experiments thatthe efficiency of the fuel cell is increased by introducing thedefects can be explained if the carrier supply is significantly
increased by doping. This will be the case if defect induced

Reference[1] W. Osada, S. Tanaka, K. Mukai, M. Kawamura, Y.H. Choi, F.
Ozaki, T. Ozaki, and Jun Yoshinobu, Phys. Chem. Chem. Phys. 24,
21705 (2022).
Authors
W. Osada, S. Tanaka, K. Mukai, M. Kawamura, Y.H. Choi, F. Ozaki, T.
Ozaki, and J. Yoshinobu

Thought Experiment of the Activityof an Oxide Electrode
Sugino Group
While a great deal of attention has been given to thecomputational design of functional materials, the degree of
freedom is overwhelming when dealing with the heteroge-

Fig. 1. (Schematic view) Part of the 2 × 1 slab model of the defective
tetragonal ZrO2(101) surface where one O2 molecule (blue spheres) is
adsorbed on a surface Zr atom (green) surface. We have examined all
possible paths for the oxygen reduction reaction where the adsorbed O2
is reduced to form a water molecule. The defect site was modeled byremoving a surface O atom, VO1 and VO2, and substituting a subsurface O atom with a N impurity.

ISSP Activity Report 202211

gap states are extended in the sample. With this in mind, weare now theoretically investigating the electrostatic potential
profile to see how the carrier path can be facilitated.
In the above surface simulation, we have neglected thesolvation effect. Water molecules can be adsorbed on thezirconia surface as a molecule or as dissociated species,
OH* and H*, blocking the incoming oxygen molecule tobe adsorbed. This possibility was investigated using themachine-learned potential developed with abICS. Basedon many nanosecond trajectories, we found that watermolecules do not favor the surface vacancy site, while theyfavor reactive Zr sites when no defects are introduced. Thisis likely to be an indirect indication that the blocking effectis significantly different between the defective and pristine
surfaces. Further simulations are now in progress to make aconclusion about the solvation effect.
References[1] https://www.pasums.issp.u-tokyo.ac.jp/abics/[2] S. Muhammady, J. Haruyama, S. Kasamatsu, and O. Sugino, J.
Phys. Chem. C126, 15662 (2022).
Authors
S. Muhammady, A. Nakanishi, A. F. Flaviano, J. Haruyama, S.
Kasamatsua, and O. Sugino.
aYamagata University

Study on the Channel Gating Mechanismof Channelrhodopsin C1C2
Akiyama and Inoue Groups
Channelrhodopsins (ChRs) are members of microbial
rhodopsins that function as light-gated cation channels.
ChRs are composed of seven transmembrane (TM) helices
and an all-trans-retinal chromophore which is covalently
bound to the seventh TM helix via a protonated Schiff baselinkage. Light absorption induces the isomerization of theretinal chromophore from the all-trans to the 13-cis form
leading to the subsequent conformation change of the protein
moiety opening the ion-transport channel connecting theextracellular and cytoplasmic solvents. Recently, ChRs
are being used widely in optogenetics to control neuralactivity in an animal body. Whereas high-functional ChR
proteins are being strongly demanded to realize efficientand low-invasive optogenetics, the lack of understandingof its channel-gating mechanism is inhibiting rational andprecise protein engineering to improve the functionality of
ChRs. The structural information of the open state of ChR

Fig. 1. Time-resolved resonance Raman spectra of each state of C1C2

12ISSP Activity Report 2022

Fig. 2. Channel gating mechanism of C1C2

is indispensable to clarify the mechanism. However, it wasdifficult due to the inhibition of the channel opening by thetight packing of protein molecules in the crystal phase for the
X-ray crystallographic analysis.
To overcome this difficulty, we studied the channel
opening and closing processes of C1C2, one of the best
characterized ChRs whose three-dimensional structure was
first solved, by time-resolved resonance Raman spectroscopy, laser flash photolysis, and laser electrophysiology.
Especially, time-resolved resonance Raman spectroscopy
can selectively obtain detailed information on the chemicalbonds of the retinal chromophore based on its vibrationalmodes. However, time-resolved resonance Raman spectroscopy generally requires a large amount of protein sample
which is difficult to prepare for C1C2. We avoided thisproblem by developing a new Raman microspectroscopy
system using semiconductor lasers, acoustic-optics modulators (AOM), an optical objective lens, and an automatedoptical stage. As a result, we succeeded in obtaining theresonance Raman spectra of the initial and all photointermediate states of C1C2 and revealed the enhancement of thehydrogen-out-of-plain mode of the retinal chromophore after
the photoexcitation of C1C2 indicating the polyene chainof the retinal is more twisted compared with the dark state.
The twisting of the retinal is maximized in the full-openstate of C1C2. Hence, the channel gate in C1C2 is openedby the steric repulsion between the retinal chromophoreand transmembrane helices as previously suggested by thequantum-mechanics/molecular-mechanics calculation [1]and time-resolved X-ray crystallographic study [2] on the
pre-opened state. On the other hand, the shift and broadeningof the C=N stretching vibration band revealed the switchingof the hydrogen-bonding partner of the retinal Schiff basefrom the counterion to a water molecule during the channel
opening. Furthermore, the laser flash photolysis and laser
electrophysiology measurements revealed that, while thechannel opening kinetics did not alter between H2O and D2Osolvents, the rate of channel closing was significantly slowedin D2O compared to H2O. This result indicates that the
protonation of the retinal chromophore relaxes the twisted
polyene chain leading to the channel closing.
This study provided a new understanding of the channel
gating mechanism of ChR in which the channel opening
is induced by the retinal twisting and the closing rate isregulated by the proton transfer between the protein moiety
and the chromophore [3]. The development of novel
functional ChRs based on this understanding in the near
future is highly expected.
References[1] C. Cheng, M. Kamiya, M. Takemoto, R. Ishitani, O. Nureki, N.
Yoshida, and S. Hayashi, Biophys. J. 115, 1281 (2018).
[2] K. Oda, T. Nomura, T. Nakane, K. Yamashita, K. Inoue, S. Ito, J.
Vierock, K. Hirata, A. D. Maturana, K. Katayama, T. Ikuta, I. Ishigami,

T. Izume, R. Umeda, R. Eguma, S. Oishi, G. Kasuya, T. Kato, T.
Kusakizako, W. Shihoya, H. Shimada, T. Takatsuji, M. Takemoto,R. Taniguchi, A. Tomita, R. Nakamura, M. Fukuda, H. Miyauchi,
Y. Lee, E. Nango, R. Tanaka, T. Tanaka, M. Sugahara, T. Kimura, T.
Shimamura, T. Fujiwara, Y. Yamanaka, S. Owada, Y. Joti, K. Tono, R.
Ishitani, S. Hayashi, H. Kandori, P. Hegemann, S. Iwata, M. Kubo, T.
Nishizawa, and O. Nureki, eLife 10, e6238 (2021).

[3] K. Shibata, K. Oda, T. Nishizawa, Y. Hazama, R. Ono, S.
Takaramoto, R. Bagherzadeh, H. Yawo, O. Nureki, K. Inoue, and
H. Akiyama, J. Am. Chem. Soc., doi: 10.1021/jacs.3c01879 (2023).
Authors
K. Shibata, K. Odaa, T. Nishizawaa, Y. Hazama, R. Ono, S. Takaramoto, R. Bagherzadeh, H. Yawo, O. Nurekia, K. Inoue, and H.
AkiyamaaThe University of Tokyo

Non-Invertible Duality Transformation
Between SPT and SSB Phases
Oshikawa Group
Symmetry-Protected Topological (SPT) phases are
one of the central issues in contemporary quantum manybody physics. While the concept of SPT phases was established after the discovery of topological insulators, which
are the free electron version of SPT phases, a prototypicalexample of the bosonic SPT phases, the Haldane gap phase,
was found much earlier. In 1992, Kennedy and Tasaki
constructed a non-local unitary transformation that maps
×
spontaneously symmetry breaking phasebetween aand the Haldane gap phase on an open spin chain [1,2].
This gave a unified understanding of the exotic natures of
Haldane gap phase, narrowly missing the clear recognition ofconcept of the SPT phases.
Since the discovery of the concept of the SPT phases in2009, significant progress has been made on many fronts. In
particular, systematic classifications in general dimensions
have been studied, uncovering the deep relation to topological quantum field theory and algebraic topology. Given
the history, it would be worthwhile to revisit the KennedyTasaki transformation, which played a significant role inunderstanding the Haldane gap phase 30 years ago, from themodern perspective.
To this end, in this work [3] we demonstrate that the
Kennedy-Tasaki transformation can be defined on closed
chains by sacrificing unitarity, or by expanding the Hilbert
space by including “twist” sectors corresponding to different
boundary conditions. This is shown for both the original
Kennedy-Tasaki transformation on S = 1 chain and for its
generalization on S = 1/2 chain. In both cases, the closed

Fig. 1. A graphical illustration for the fusion rule between the KramersWannier duality N and the global spin-flip operator U in the twisted
sector, which is implemented by the twist operator σ. This type of
relations is also relevant for Kennedy-Tasaki transformation.

chain version of the Kennedy-Tasaki transformation is a
non-unitary transformation and satisfy the non-invertible
fusion rules, as in the famous Kramers-Wannier dualitytransformation. Such non-invertible duality transformations generalizing the Kramers-Wannier duality have been
extensively discussed in recent years, both in (1 + 1) andhigher dimensions. When the system is invariant under the
duality transformation, the operator representing the transformation becomes a non-invertible symmetry of the system.
Indeed, we reveal the close connection between the KramersWannier and Kennedy-Tasaki dualities; in particular, weshow that Kennedy-Tasaki duality can be constructed interms of the Kramers-Wannier duality in field theory and on
S = 1/2 chain.
Although the Kennedy-Tasaki transformation on S = 1
chain and that on S = 1/2 chain can be shown to be equivalent, the construction on S = 1/2 chain is more convenient for
further applications, because the degrees of freedom charged’s are decoupled; the first and the second
under twogroups of S = 1/2 are charged under separate’s respectively. Moreover, the decoupling between degrees of freedom
admits a more convenient interpretation of twisted gauging,similarly to the Kramers-Wannier duality transformation
global symmetry. This
which implements gauging of theinterpretation also facilitates the construction of new models
with interesting topological features. In particular, we utilize
Kennedy-Tasaki transformation on S = 1/2 chain to systematically construct a series of gapless SPT phases, not only
those have been recently explored, but also uncovering new
ones. Our work opens up a new approach to the study ofgapless SPT phases, which are at the forefront of the current
quantum many-body problem.
References[1] T. Kennedy and H. Tasaki, Phys. Rev. B 45, 304 (1992); Commun.
Math. Phys. 147, 431 (1992).
[2] M. Oshikawa, J. Phys. Condens. Matter 4, 7469 (1992).

[3] L. Li, M. Oshikawa, and Y. Zheng, arXiv:2301.07899 (2023).
Authors
L. Li, M. Oshikawa, and Y. Zhenga
aKavli IPMU (and ISSP)

Pressure-Induced Superconductivity up
to 9 K in the Quasi-One-Dimensional
KMn6Bi5
Uwatoko Group
Unconventional superconductivity beyond the BardeenCooper-Schrieffer theory usually emerges on the border oflong-range antiferromagnetic order as exemplified by thecuprate, iron-pnictide, and heavy-fermion superconductors. In these cases, the enhanced magnetic fluctuations are
believed to be the binding glue of Cooper pairs. As such,it is expected to find unconventional superconductivity inthe vicinity of the antiferromagnetic quantum critical point(QCP), which can be achieved by employing external tuning
parameters such as chemical doping and applying physicalpressure. By following this approach, we discovered the firstMn-based superconductor MnP by suppressing its helimagnetic order via the application of high pressure, even though
the Mn-based superconductor is rare owing to the strong
magnetic pair-breaking effect. Its superconducting transition temperature Tc ≈ 1 K is low and the superconductivity

ISSP Activity Report 2022

13

K, which is one order of magnitude higher than that of MnP(~1 K). In contrast to the binary MnP, the flexibility of thecrystal structure and chemical compositions in the ternary
AMn6Bi5 (A = alkali metal) can open a new avenue forfinding more Mn-based superconductors.
Reference[1] Z. Y. Liu, Q. X. Dong, P. T. Yang, P. F. Shan, B. S. Wang, J. P.
Sun, Z. L. Dun, Y. Uwatoko, G. F. Chen, X. L. Dong, Z. X. Zhao,
and J.-G. Cheng, Phys. Rev. Lett. 128, 187001 (2022).
Authors
a,b, Q. X. Donga,b, P. T. Yanga,b, P. F. Shana,b, B. S. Wanga,b, J.
Z. Y. Liu
P. Suna,b, Z. L. Duna,b, Y. Uwatoko, G. F. Chena,b, X. L. Donga,b, Z. X.
Zhaoa,b, and J.-G. Chenga,baChinese Academy of Sciences
bUniversity of Chinese Academy of Sciences
Fig. 1. Temperature-pressure phase diagram of KMn6Bi5. Inset shows
the Q1D crystal structure of KMn6Bi5.

only appears in a narrow pressure range around Pc ≈ 8 GPa
where the helimagnetic order just vanishes. Since then, we
have been devoted to find more Mn-based superconductors
with higher Tc. In this regard, we pay special attention to
the ternary or complex Mn-based magnetic materials with
low-dimensional structures, in which the enhanced magnetic
fluctuations are expected to promote stronger superconducting pairing and thus higher Tc in comparison to the threedimensional MnP. After seven-year endeavor, we recently
discovered the first ternary Mn-based superconductor
KMn6Bi5 [1].
KMn6Bi5 is a newly synthesized ternary compoundwith a quasi-one-dimensional (Q1D) monoclinic structurefeatured by the presence of infinite [Mn6Bi5]− columns along
the b-axis as shown in the inset of Fig. 1. These columns arecomposed of an outer nanotube of Bi atoms surrounding an
inner Mn–Mn bonded metallic core. At ambient pressure(AP), KMn6Bi5 undergoes an antiferromagnetic transition at
TN ≈ 75 K, which is manifested as a pronounced anomaly inresistivity and magnetic susceptibility. Curie–Weiss fitting to
the paramagnetic susceptibility above TN yield a relatively
small effective moment of Mn, i.e., 1.4-1.6 μB, signaling
an itinerant nature of the magnetism similar to MnP. Firstprinciples calculations have revealed that the density ofstates at the Fermi level are dominated by the Mn-3d
electrons and the helical antiferromagnetic structures arestable.
By measuring resistance and ac magnetic susceptibility
under hydrostatic pressures up to 14.2 GPa in a cubic anvil
cell apparatus, we find that its antiferromagnetic order isfirst enhanced moderately and then suppressed completely
at a critical pressure of Pc ≈ 13 GPa, around which bulk
superconductivity emerges and exhibits a domelike Tc(P)with the maximal Tconset ≈ 9.3 K achieved at 14.2 GPa. As
shown in Fig. 1, the close proximity of superconductivity
to a magnetic instability in the temperature-pressure phase
diagram of KMn6Bi5 resembling many unconventional
superconducting systems mentioned above suggests anunconventional magnetism-mediated paring mechanism. Its
unconventional nature is also substantiated by the observations of strange-metal behavior in the normal-state resistancenear Pc and an unusually large μ0Hc2(0T) exceeding the Paulilimit. Since the theoretical calculations on KMn6Bi5 suggest
dominant contributions of Mn-3d orbital electrons to thedensity of states at Fermi level, it becomes the first ternary
Mn-based superconductor with a relatively high Tc of 9.3

14

ISSP Activity Report 2022

Pressured-Induced Superconducting
Phase with Large Upper Critical Field
and Concomitant Enhancement of
Antiferromagnetic Transition in EuTe2
Uwatoko GroupThe interplay between static magnetism and conduction
electrons has been a core topic in modern condensed matterphysics spanning a broad spectrum of interesting phenomena
including the Kondo physics and heavy fermions, dilute
magnetic semiconductors, giant/colossal magnetoresistance, and spintronics. Recently, the addition of nontrivial
band topology to this topic leads to more exotic topologicalquantum phenomena such as quantum anomalous Hall
effect and the intrinsic large anomalous Hall effect. Whenthe conduction electrons condense into Cooper pairs andcoexist with static magnetism in the magnetic superconductors, unconventional pairing states with intriguing superconducting properties can emerge as exemplified by the U- andEu-based magnetic superconductors. Due to the antagonistic
nature between magnetism and superconductivity, however,
the magnetic superconductors are rare, and the concurrenceof abovementioned phenomena in a single material is evenscarce. Recently, we reported on a rare case that manifests
an intimated interplay among static magnetism, conduction
electrons, and possible exotic superconductivity throughpressure regulations on an antiferromagnetic (AF) semiconductor EuTe2 [1].
At ambient pressure (AP), EuTe2 crystallizes in a CuAl2type tetragonal structure with space group I4/mcm. As seenin the inset of Fig. 1, each Eu2+ ion is surrounded by eight
Te atoms, which form the [Te2]2− dimers stacking along thec-axis. Upon cooling down at zero field, EuTe2 exhibits asemiconducting behavior in resistivity and the Eu2+ moments
develop a type-A AF order below TN = 11 K, having thec-axis-oriented ferromagnetic (FM) Eu2+ layers coupled
antiferromagnetically. When an external magnetic field isapplied along c-axis, the type-A AF order can be tuned intoa canted AF state through a spin-flop transition at μ0H1 =2.3 T and then a fully spin-polarized state at μ0H2 = 7.6 T.
Interestingly, these field-induced transitions have a profound
impact on the transport properties of EuTe2; i.e., ρ(T) under
μ0H > μ0H1 is altered from semiconducting to metalliclike behavior below a characteristic temperature Tm >> TN,
resulting in a large negative MR with over five orders of dropin resistivity at low temperatures. According to the density-

Pressure Induced Superconductivity
and Multiple Structural Transitions
in CsCl-Type Cubic CeZn Single Crystal
Uwatoko Group

Fig. 1. Temperature-pressure phase diagram of EuTe2. Inset shows the
crystal and magnetic structures of EuTe2 at ambient pressure.

functional-theory calculations, the charge carriers near the
Fermi level originate mainly from the Te-5p orbitals and thesmall energy gap of Ea ≈ 16 meV at zero field can be closed
by lifting the band degeneracy of the Te-5p orbitals in the
spin-flop state with a net FM component. This explains thefield-induced metallic state and thus the large negative MR
below Tm. These results thus demonstrated an intimatedinterplay between the static magnetism of Eu2+ sublattice
and the charge carries from Te-5p orbitals in EuTe2.
Considering the fact that many Te-containing materials
become superconducting at ambient and/or high pressures,
we are motived to pursue whether EuTe2 can be driven intoa magnetic superconductor upon compression. So, we investigate the effect of pressure on the transport and magnetic
properties of EuTe2 single crystals by using a cubic anvil
cell apparatus. The main results are summarized in thetemperature–pressure phase diagram of EuTe2 in Fig. 1. We
find that the application of high-pressure drives EuTe2 froman AF semiconductor showing a large negative MR into amagnetic superconductor with a large upper critical fieldcomparable to the Pauli paramagnetic limit. Interestingly, theemergence of superconductivity above the critical pressure of
Pc ≈ 6 GPa is accompanied with a concomitant enhancement of TN, which experiences a quicker rise with the slope
increased dramatically from dTN/dP = 0.85(14) K/GPa for
P ≤ Pc to 3.7(2) K/GPa for P ≥ Pc. Moreover, the superconductivity can survive in the spin-flop state with a net FMcomponent of the Eu2+ sublattice under moderate fields
μ0H ≥ 2 T, implying a possible exotic pairing state. Ourfindings establish the pressurized EuTe2 as a rare magnetic
superconductor, and these new results under high pressures
have enriched the physics pertinent to the interplay between
static magnetism and conduction electrons in this interesting
compound.

The CsCl-type compound crystallizing in cubic
structure with chemical formula ReTm (where Re = rareearth elements such as La, Ce, Pr…etc., and Tm = typicalmetal elements such as Ag, Zn, Cd, …etc.) have been
known for last three decades due to their strong correlation
between charge, spin, and lattice degrees of freedom.
These compounds undergo a cubic-to-tetragonal structuraltransition on cooling, followed by a magnetically orderedstate at a lower temperature.
Among these, CeZn is distinct because the magnetic
and structural transitions are coupled, revealing a first-ordernature of the transition. CeZn exhibits antiferromagnetic(AFM) order below the Neel temperature, TN ~ 30 K,
and a concurrent crystal structural change from cubic to atetragonal structure [1,2]. So far, the electrical, magnetic,
and structural properties of CeZn have been investigated bysubstituting Cu in place of Zn, CeZn1-xCux [3], and applying
pressure up to 2.9 GPa [1]. On applying pressure, the AFM
ordering changes to ferromagnetic (FM) ordering above
1 GPa, and the coupled magnetic and crystal structuraltransitions become separated. The neutron diffraction study[2] pointed that the crystal structure altered from cubic
to rhombohedral structure in the FM state. With further
increase in pressure, the Curie temperature, TC, of the
FM state was found to decrease with pressure, while thestructural transition temperature increases and reaches room
temperature around 3.0 GPa. However, further investigationof the lattice structure and electronic properties of CeZn at
higher pressure has remained unexplored.
CeZn single crystals were synthesized by melting Ceand Zn with a 1:1 ratio as starting material in a tungsten
crucible sealed inside a quartz tube under vacuum. Resistivity under high pressure was measured using a clamp type
piston cylinder cell and a palm cubic anvil cell. The single
crystal X-ray diffraction was carried out by using Rigaku
XtaLab HyPix-6000 diffractometer with Mo-Kα radiation(λ = 0.71073 Å).
Figure 1 shows the temperature dependence of theelectrical resistivity ρ of a CeZn single crystal at some

Reference[1] P. T. Yang, Z. Y. Liu, K. Y. Chen, X. L. Liu, X. Zhang, Z. H. Yu,
H. Zhang, J. P. Sun, Y. Uwatoko, X. L. Dong, K. Jiang, J. P. Hu, Y.
F. Guo, B. S. Wang, and J.-G. Cheng, Nature Commun. 13, 2975
(2022)
Authors
P. T. Yanga,b, Z. Y. Liua, K. Y. Chena,b, X. L. Liuc, X. Zhangc, Z. H. Yuc,
H. Zhanga,b, J. P. Suna,b,d, Y. Uwatoko, X. L. Donga,b,d, K. Jianga,b,d, J.
P. Hua,b, Y. F. Guoc B. S. Wanga,b,d, and J.-G. Chenga,baChinese Academy of Sciences
bUniversity of Chinese Academy of Sciences
cShanghai Tech University
dSongshan Lake Materials Laboratory

Fig. 1. Temperature dependence of electrical resistivity ρ, of CeZn
single crystal at some selected pressures. Black and red arrows show
the magnetic transition temperatures, TN and TC, respectively. Bluearrow indicates Kondo temperature (TK), and green arrows indicate
superconductivity transition temperature (Tsc).

ISSP Activity Report 202215

selected pressures from 300 K down to 30 mK. At ambientpressure, ρ(T) monotonically decreases with temperatureand drops suddenly below TN = 29.0 K. It is clear from
Fig. 1 that the coupled structural and magnetic transition
become separated on increasing pressure above 1.0 GPa, in
agreement with the earlier report [1,2]. At 1.3 GPa, the bendat the lower temperature side is assigned to the pressureinduced FM state, while the thermal hysteresis appearing at
the high temperature side is attributed to the crystal structural transition. On increasing pressure to 2.0 GPa, FM state
shifts towards lower temperature and the crystal structuraltransition temperature almost reaches to 280 K. Here, it isworthy to note that, in contrast to earlier result [1], in thepresent case, the crystal structural transition exceeds room
temperature at lower pressure. This is clear by the absenceof hysteretic behavior in ρ(T) below 300 K even at 2.9 GPa.
This difference is attributed to the higher quality of sample
used in the present study than the earlier polycrystalline
samples [1]. Moreover, at 2.9 GPa, the signature of TC disappears, and another big hump appears around 100 K, implying
the pronounced Kondo effect. Up to 5.0 GPa, ρ(T) shows anormal metallic behavior in the measured temperature range.
Surprisingly, on slightly increasing the pressure to 5.5 GPa
as shown in Fig. 1, ρ(T) displays a pronounced drop below~1.3 K and reaches zero around 0.8 K, signaling the occurrence of a superconducting state, which survives even up to
9.5 GPa.
To find the microscopic origin of these anomalies,
we performed single crystal X-ray diffraction of CeZn atselected pressures at room temperature. From the X-ray
diffraction analysis, we deduce that the crystal structureof CeZn sequentially evolves with increasing pressure
from a cubic structure (at ambient pressure) to tetragonal(at 2.8 GPa), orthorhombic (at 4.2 GPa) and finally to
monoclinic (at 8.2 GPa). To find a correlation between the
crystal structure and the underlying electronic properties
with increasing pressure, we have constructed a temperature (T)—pressure (P) phase diagram of CeZn, as shown in
Fig. 2. The coupled magnetic transition, PM to AFM state,

and the structural transition, cubic to tetragonal structure
due to the magnetic striction, at TN decreases hardly up
to 1.0 GPa [1,2]. Above 1.0 GPa, the pressure induced ananother cubic-to-tetragonal structural transition caused by theband Jahn-Teller effect [4]. The T–P phase diagram reveals
that the electronic properties of CeZn also change simultaneously across the structural transitions. First, the ground statechanges AFM to FM due to the cubic-to-tetragonal structural transition with pressure. TC decreases rapidly to 1.1 K
in the tetragonal structure as pressure increases to 2.0 GPa,
implying a possible existence of a quantum critical point.
Secondly, at the tetragonal-to-orthorhombic structural transition, CeZn transforms into a nonmagnetic simple metallic
state. Finally, superconductivity emerges below Tsc ~ 1.3 K
around 5.5 GPa possibly when the crystal structure changes
from orthorhombic to monoclinic. The superconducting
states survive up to 9.5 GPa in the monoclinic crystal structure. Here, it is worth noting that the T–P diagram of CeZn isdifferent from that of the other Ce-based superconductors, inwhich superconductivity appears very close to the magnetic
quantum critical point, whereas superconductivity in CeZn
appears far away from the magnetic state. These results may
suggest that the emergence of superconductivity in CeZn
under pressure is related to the change in crystal structure
implying a nonmagnetic origin of the Cooper pair formation.
In summary, we have performed systematic electricalresistivity and single crystal X-ray diffraction measurementof CeZn under high pressure up to 9.5 GPa. We find that
CeZn exhibits multiple crystal structural transitions underpressure. Simultaneously, across these crystal structuraltransitions, the signature of modification of the underlying
electronic properties of CeZn is also detected. Also, we
would like to add that further investigation of how crystal
structural change with decreasing temperature at a fixedpressure is required for detailed understanding about therelationship between the crystal structure and electronic
properties.
References[1] H. Kadomatsu, H. Tanaka, M. Kurisu, and H. Fujiwara, Phys. Rev.
B 33, 4799 (1986).
[2] T. Shigeoka, Y. Uwatoko, H. Fujii, L. Rebelsky, S. M. Shapiro, andK. Asai, Phys. Rev. B 42, 8394 (1990).
[3] Y. Uwatoko, Y. Fujii, M. Nishi, K. Motoya, and Y. Ito, J. Magn.
Magn. Mater. 76, 411 (1988).
[4] H. Ihrig, D.T. Vigren, J.Kübler, and S. Methfessel, Phys. Rev. B 8,4525 (1973).
Authors
X. Shena, H. Ma, D. Bhoi, J. Gouchi, Y. Uwatoko, A. Dalanb, Y.
Kawamurab, H. Satoc, I. Umeharaa , and M. Ueharaa
aYokohama National University
bMuroran Institute of Technology
cRigaku Corporation, Akishima

Large Magnetic-Field-Induced Volume
Change in Sintered Chromium Tellurides
Okamoto Group and X-Ray Diffraction Section

Fig. 2. Temperature–pressure phase diagram of CeZn. TN, TC, and Tsc are theNéel temperature, the Curie temperature and the superconducting transition
temperature determined from the resistivity data, respectively. For clarity, Tsc has
been multiplied by a factor of 10. The stars indicate the pressure value at which
the single crystal X-ray diffraction measurements are performed. The tetragonal
structure in the AFM region is obtained from Ref. [2]. The cubic to the tetragonal
structure boundary line has been used from Ref. [1].

16ISSP Activity Report 2022

There is a long history in the study of magnetic-fieldinduced strains in ferromagnets. The most classical examples
are iron and nickel, which show linear strains of several ppm
to several tens of ppm by applying a magnetic field. The
fact that their shapes can be changed by applying a magnetic
field means that it can be used as an actuator that converts
input energy or signal into mechanical movement. The smallmagnetostrictions in iron and nickel are insufficient for thisapplication, but in 1960s, giant magnetostrictive materials
such as Terfenol-D, exhibiting a large strain exceeding
2000 ppm, have been developed and used as a material
for magnetostrictive actuators. In such magnetostrictions
in ferromagnetic metals, the volume change is small. In
contrast, there are a few materials that exhibit a large volume
change in magnetic fields (forced volume magnetostriction),such as invar alloys. Invar alloys exhibit very small thermal
expansion over a wide temperature range due to the magnetovolume effect, which also plays an important role in the
manifestation of the large volume change in magnetic fields.
We have discovered large magnetic-field-induced
volume changes in Cr-based magnets such as LiInCr4S8 and
AgCrS2, which were hardly recognized as candidates formagnetostrictive materials [1,2]. Large volume increases
reaching ΔV/V = 700 ppm under a magnetic field of 9 T wereobserved in LiInCr4S8 just below the Néel temperature of
TN = 24 K and in AgCrS2 at TN = 42 K. Unlike invar alloys,
these Cr-based magnets are antiferromagnetic insulators,
suggesting that the large volume increases are caused by acomplex interplay between the characteristic features of Cr
spins, such as magnetic ordering accompanied by structural
distortion, strong spin–lattice coupling, and geometricalfrustration. However, the large volume changes were realized
only at low temperature due to the low Néel temperatures,
which is a disadvantage as a volume function. Therefore, we
focused on Cr3Te4, which shows a ferromagnetic transition
at a high temperature of TC = 330 K. Cr3Te4 is ferromagnetic
unlike the above Cr sulfides but is promising if the characteristic features of Cr-based magnets are utilized. In fact,
we found that Cr3Te4 sintered samples, shown in the inset
of Fig. 1(c), show magnetic-field-induced strains accompanied by large volume changes in a wide temperature region
including room temperature [3].
Figure 1 shows the linear strains in magnetic fields of a
Cr3Te4 sintered sample measured at various temperatures.
The strains in Cr3Te4 can be understood as the summationof two components that are isotropic strain with the volume
change and anisotropic strain with the shape change shownin Fig. 1(a). The latter shows small values up to several tensof ppm, which correspond to the ferromagnetic magnetization curve, suggesting that Cr3Te4 showed usual behavior asa ferromagnet. In contrast, as shown in Fig. 1(b), the volume
changes in magnetic fields are very large reaching ΔV/V

Fig. 1. (a) Isotropic (left) and anisotropic (right) magnetic-field-induced
strains. (b) The volume changes in magnetic fields of a Cr3Te4 sinteredsample measured at various temperatures. (c) The anisotropic strains
in magnetic fields, corresponding to ΔL⊥ in the right panel of (a), of a
Cr3Te4 sintered sample. The inset shows the Cr3Te4 sintered sample.

Fig. 2. (a) The volume changes of a Cr3Te4 sintered sample by applying
a magnetic field of 9 T. (b) Linear thermal expansion with the reference
temperature of 500 K (left) and unit cell volume determined by powder
X-ray diffraction experiments (right) of a Cr3Te4 sintered sample.

=1200 ppm at a magnetic field of 9 T. This value is nearly
twice as large as the maximum value of volume changes
observed in Cr-based magnets as well as comparable tothose of invar alloys. It is notable that a magnetic field of
9 T induced a significant volume change over 1000 ppm atroom temperature and that the volume changes over 500 ppm
throughout the entire temperature range below 350 K, as
shown in Fig. 2(a).
The magnetic-field-induced volume changes in the
Cr3Te4 sintered sample are particularly large near the Curie
temperature, suggesting that the ferromagnetic order plays
an essential role for the manifestation of the large volume
increase. As shown in the linear thermal expansion shownin Fig. 2(b), a Cr3Te4 sintered sample showed a negative
thermal expansion in a wide temperature range of 120–330 K
below TC, where the volume increases with decreasing
temperature. This result indicates that Cr3Te4 graduallychanges from paramagnetic to ferromagnetic ordered stateswith decreasing temperature, implying that the ferromagnetic order is enhanced by applying a magnetic field in thistemperature region, resulting in the large magnetic-fieldinduced volume change.
The thermal expansion of the Cr3Te4 sintered sample has
another feature that the volume change associated with theferromagnetic order does not match the volume change ofa unit cell. As seen in the Fig 1(b), there is no temperature
region where the unit cell volume increases with decreasing
temperature. This discrepancy suggests that the negative
thermal expansion in the Cr3Te4 sintered sample is due tothe “mictrostructural effects”, discussed in β-eucryptite
and Ca2RuO4, etc.[4,5] In Cr3Te4, the large magnetic-fieldinduced volume change and negative thermal expansion
have the same origin that is the volume change at the ferromagnetic order, strongly suggesting that the microstructuraleffects play an important role in the emergence of the large
magnetic-field-induced volume change. This is a different
mechanism from the strong magnetovolume effect for invar
alloys and might be a novel magneto-volume phenomenon
occurring in Cr-based magnets.

ISSP Activity Report 2022

17

References[1] T. Kanematsu, M. Mori, Y. Okamoto, T. Yajima, and K. Takenaka,
J. Phys. Soc. Jpn. 89, 073708 (2020).
[2] T. Kanematsu, Y. Okamoto, and K. Takenaka, Appl. Phys. Lett. 118,
142404 (2021).
[3] Y. Kubota, Y. Okamoto, T. Kanematsu, T. Yajima, D. Hirai, and K.
Takenaka, Appl. Phys. Lett. 122, 042404 (2023).
[4] F. H. Gillery and E. A. Bush, J. Am. Ceram. Soc. 42, 175 (1959).
[5] K. Takenaka, Y. Okamoto, T. Shinoda, N. Katayama, and Y. Sakai,Nat. Commun. 8, 14102 (2017).
Authors
Y. Okamoto, Y. Kubotaa, T. Kanematsua, T. Yajima, D. Hiraia, and K.
Takenakaa
aNagoya University

Rotations of Methane Molecules inAmorphous and Crystalline Hydrates
Yamamuro Group
Methane hydrate has been studied extensively not only
as a future energy resource but also from the interest inquantum and classical rotations of methane molecules. The
crystalline methane hydrate (c-MH) forms a host water
lattice of type I with two dodecahedral (12-hedral) and six
tetradecahedral (14-hedral) cages per unit cell (space group:Pm3n), and each cage contains one methane molecule [1].
The chemical formula of c-MH is CH 4･5.75H2O. The“amorphous” MH (a-MH) was first prepared with a vapordeposition method by our group [2]. The radial distributionfunctions derived from the neutron diffraction data demonstrated that the methane molecules are accommodated in
the cage-like spaces even in amorphous structures. It is also
known that the a-MH crystallizes into the c-MH around
175 K [3].
In this study, we have investigated the rotations ofmethane molecules in a-MH and c-MH. Our main interest
is how the rotation of methane molecules is affected by thecage (like) structure, e.g., size and symmetry. The a-MH
was prepared by depositing the mixture of CH4 and D2Ogases onto the substrate cooled at 5 K using a custom-madecryostat [4], and c-MH was obtained by annealing the sample
at 170 K under 0.1 MPa of CH4 gas. Their quasi-elastic
neutron scattering (QENS) and inelastic neutron scattering(INS) data were collected at 5 to 80 K using AGNES
spectrometer at JRR-3, Tokai, Japan.
Figure 1 shows clear QENS broadening due to theFig. 2. Arrhenius plots of the relaxation times at Qav = 1.7 Å−1 for theCH4 rotation in amorphous and crystalline hydrates.

rotational motion of CH4 accommodated in a-MH. It is worth
noting that the QENS appeared even at 5 K. The data were
well fitted to the combination of Delta and Lorentz functions
as usual and the relaxation time τ was calculated from thepeak width of the Lorentz function. Similar QENS data wereobserved also in c-MH. Figure 2 shows the Arrhenius plots
for both a-MH and c-MH. There is a clear bending of the τline around 20 K for both samples and the slope (activationenergy ΔEa) on the low-temperature side is very small (ΔEa
< 0.2 kJ/mol). We guess that there is a crossover between
the classical (high-T) and quantum (low-T) rotations around
20 K; there is no temperature dependence of τ in a puretunneling process. The a-MH has longer τ than that of c-MH.
This is probably because the cage space in a-MH is narrower
than that of c-MH. Additional neutron diffraction and calorimetric experiments are now going on to explain the QENS
data more quantitatively.
References[1] D. W. Davidson et al., Nature 311, 142 (1984).
[2] T. Kikuchi et al., J. Phys. Soc. Jpn. 81, 094604 (2012).
[3] M. Z. Faizullin et al., Chem. Eng. Sci. 130, 135 (2015).
[4] O. Yamamuro et al., J. Chem. Phys. 115, 9808 (2001).
Authors
M. Zhang, H. Akiba, and O. Yamamuro

Spin Excitation in a Chiral-Polar-Corundum
Compound Ni2InSbO6
Masuda GroupIn some types of non-centrosymmetric magnets, spin
moments are incommensurately arranged to balance
Dzyaloshinskii–Moriya (DM) and Heisenberg interactions.

Fig. 1. Quasielastic neutron scattering spectra of amorphous methane
hydrate. The data from all detectors are summed up. The average Q
value is about 1.7 Å−1.

18

ISSP Activity Report 2022

This leads to helimagnetic spin textures and spin soliton
lattice which exhibit distinctive magnetoelectric response
and promising potential for applications in spintronics. A
chiral-polar-corundum compound Ni2InSbO6 is an example
for a proper-screw type spin structure realized by chiralityinduced DM interaction [1], as shown in Fig. 1(a). In
conventional helimagnets, a spin soliton lattice is inducedin the magnetic field applied in the spin rotation plane. In
contrast in Ni2InSbO6, the soliton lattice was proposed bya unique scenario. Suppose that additional DM interac-References[1] Y. Araki, T. Sato, Y. Fujima, N. Abe, M. Tokunaga, S. Kimura, D.
Morikawa, V. Ukleev, Y. Yamasaki, C. Tabata, H. Nakao, Y. Murakami,
H. Sagayama, K. Ohishi, Y. Tokunaga, and T. Arima, Phys. Rev. B 102,054409 (2020).
[2] M. A. Prosnikov, A. N. Smirnov, V. Y. Davydov, Y. Araki, T. Arima,
and R. V. Pisarev, Phys. Rev. B 100,144417 (2019).
[3] Z. Liu, Y. Araki, T. Arima, S. Itoh, S. Asai, and T. Masuda, Phys.
Rev. B 107, 064428 (2023).
Authors
Z. Liu, Y. Arakia, T. Arimaa, S. Itohb,c, S. Asai, and T. Masuda
aThe University of Tokyo
bInstitute of Materials Structure Science, High Energy Accelerator
Research Organization
cJ-PARC Center

Fig. 1 Schematic of (a) proper-screw type helical spin structure and (b)spin soliton lattice in Ni2InSbO6. The figures were adopted from Ref.
[1]. (c) INS spectrum measured with Ei = 30.5 meV at T = 10 K. (d),(e)Powder averaged LSWT calculation of INS spectra using the best fit
parameters for model A in (d) and model B in (e). Modes of spin wave
excitation from Γ(003) to A(00 3/2) and from Γ(101) to L(1/2 0 1/2) points
are described by red and yellow dashed lines, respectively. (f) 1D-cut
of powder spectrum at E = 10.1 meV for experiment (black), model A(orange) and model B (blue).

tions with the staggered vector component D1 and D2 along
the polar c axis are assumed, as shown in Fig. 1(b). At
zero magnetic field, localized magnetization components
M are induced by D1 and D2 interacting between neighboring Ni2+ ions along the c axis, indicated by the light blue
arrows in Fig. 1(a). In the magnetic field applied perpendicular to the spin rotation plane, they shrink or expand tominimize Zeeman energy, and hence the spin soliton lattice
is realized. In previous Raman study [2], however, thespectrum was analyzed by the spin model assuming that thefirst and second neighbor Heisenberg interactions J1 andJ2 were equal, corresponding that D1 and D2 were equal.
The assumption was contradictory to the scenario based on
the staggered DM vectors. Thus, in this work, we collectedmagnetic spectrum in wide momentum-energy space on
Ni2InSbO6 by inelastic neutron scattering (INS) technique toidentify the precise spin Hamiltonian and validate the mechanism of the spin soliton lattice [3].
The INS powder spectrum is shown in Fig. 1(c). Welldefined spin wave excitation is observed with the band
energy of 20 meV at 10 K. Two spin models of antiferromagnetic Heisenberg Hamiltonian considering the first to fourthnearest neighbor interactions J1 to J4 are used to analyze
the spectrum by the linear spin-wave theory (LSWT). The
calculated spectra of model A with constraints J1 = J2 andJ3 = J4 according to the previous Raman study [2] and model
B without the constraints according to the crystallographic
consideration are shown in Figs. 1(d) and 1(e), respectively.
χ2 and correlation coefficient R for model A were 8.8 and
0.928, and those for model B are 6.1 and 0.953, meaning thatmodel B is more probable. Indeed, one-dimensional cuts ofthe experiment and calculations at the energy of 10.1 meVin Fig. 1(f) suggest that the model B reproduces the experiment better. The difference is, in fact, caused by the fast andlow spin wave velocities along the c axis for model A and B,
respectively. The spin model of Ni2InSbO6, thus, turns out
to be a coupled two-dimensional lattice stacked along the caxis with intraplane interaction J1 = 6.05 meV and interplaneinteraction J1 = 0.95 meV. Since DM interaction is proportional to the corresponding exchange interaction, D1 and D2
are different as well, which validates the mechanism of spin
soliton lattice [1].

Spin Dynamics in Equilateral Triangular
Spin Tube Material CsCrF4
Masuda Group
Frustrated magnetism has attracted significant attention due to their potential to exhibit unique magnetic phases
resulting from the competition between various interactions. Lattices composed of triangles as basic units, suchas the triangular lattice, Kagome lattice, and Pyrochlore
lattice, serve as representative examples of frustrated magnet
systems. Triangular spin tube has been extensively studied
theoretically as a one-dimensional frustrated system, where
triangles are arranged in a single direction. In the Heisenberg
equilateral triangular spin tube system, the spin correlation
decays exponentially, and the ground state is a dimerized
nonmagnetic state with a spin gap [1]. Furthermore, thepresence of a Tomonaga-Luttinger liquid with chiral orderhas been predicted under the influence of anisotropy and amagnetic field [2].
In real materials, the presence of intertube interactions,albeit small, leads to the emergence of various magneticallyordered states [3]. As shown in Fig. 1(a), CsCrF4 consistsof Cr3+ ions forming equilateral triangular spin tubes with
S = 3/2 spins. Magnetic susceptibility and heat capacity
measurements did not exhibit any sign of phase transitions[4]. Nevertheless, neutron diffraction experiments unveiled
the presence of a long-range order characterized by a
120-degree structure, along with successive phase transitions

Fig. 1.(a) Crystal structure of CsCrF4. Cr ions form equilateral triangular spin tubes with S = 3/2 spins along the crystallographic c axis. (b)Magnetic structure of CsCrF4 in the LT phase. (c) Magnetic structure of
CsCrF4 in the IT phase. (d) Elastic part of INS spectra measured with
Ei = 3.1 meV. (e) INS spectra measured with Ei = 15.3 meV at 0.8 K(LT phase). (f) Powder averaged INS spectra in LT phase calculated bylinear spin-wave theory. The white solid and dashed curves are dispersion relations calculated along the c* and a* axes, respectively. (g) INS
spectra measured with Ei = 15.3 meV at 3.1 K (IT phase).

ISSP Activity Report 202219

where the propagation vector changes from qLT in Fig. 1(b) to
qIT in Fig. 1(c) [5]. So far, the spin dynamics of this material
have remained unexplored. In the present research, inelastic
neutron scattering (INS) experiments were conducted using
powder samples to determine the spin Hamiltonian and shedlight on the successive phase transitions.
The experiment was conducted using the HRC spectrometer installed at J-PARC/MLF [6]. As shown in Fig. 1(d),magnetic Bragg peaks with qLT were observed at 0.8 K andthose with qIT were observed at 3.1 K in the elastic part of
the neutron spectra [5]. The observed and calculated INS
spectra in the LT phase are shown in Figs. 1(e) and 1(f),respectively. For the latter, we used linear spin-wave theory
on the basis of Heisenberg model of a triangular spin tube,
including small DM interaction and a small single-ion anisotropy. The experiment was reasonably reproduced by thecalculation. The spectrum in wide-energy range is explainedby the quasi-one-dimensional nature of the spin tube in thec* direction. The analysis highlighted the significant roles of
the DM interaction and single-ion anisotropy in low-energy
range.
Furthermore, as depicted in Fig. 1(g), the INS spectrum
in the IT phase was measured. Surprisingly, despite thechange in the propagation vector in the diffraction profilesin Fig. 1(d), the INS spectrum in the IT phase exhibited astriking resemblance to the LT phase in level of powderaveraged spectra. The same analysis method utilized for the
LT phase was applied to analyze the INS spectrum in the IT
phase. However, the INS spectra in the IT phase could not be
reproduced, indicating that the successive phase transition is
not driven by variations in the spin Hamiltonian parameters.
To gain further insights, a phase diagram of the groundstate was calculated for the coupled spin tubes system. The
parameter values of the spin Hamiltonian estimated by thepresent INS experiment lie near the boundary between themagnetic phases with the structures of qIT and qLT. Thisfinding implies that the internal energy of the magnetic structures in the LT and IT phases is similar. Considering thatlarge spin entropy can favor the selection of the magnetic
structure, it is proposed that the gain in spin entropy serves
as the origin of the successive phase transition. Notably, thisstudy provides the first evidence that, despite disparities inthe static structures, the dynamic structures exhibit similarity
under such circumstances.
References[1] K. Kawano, and M. Takahashi, J. Phys. Soc. Jpn. 66, 4001 (1997).
[2] T. Sakai, M. Sato, K. Okunishi, Y. Otsuka, K. Okamoto, and C. Itoi,
Phys. Rev. B 78, 184415 (2008).
[3] K. Seki and K. Okunishi, Phys. Rev. B 91, 224403 (2015).
[4] H. Manaka, Y. Hirai, Y. Hachigo, M. Mitsunaga, M. Ito, and N.
Terada, J. Phys. Soc. Jpn. 78, 093701 (2009).
[5] M. Hagihala, S. Hayashida, M. Avdeev, H. Manaka, H. Kikuchi,
and T. Masuda, npj Quantum Mater. 4, 14 (2019).
[6] H. Kikuchi, S. Asai, H. Manaka, M. Hagihala, S. Itoh, and T.
Masuda, Phys. Rev. B 107, 184404 (2023).

Spin Fluctuations in
Spin-Hedgehog-Anti-Hedgehog
Lattice State in MnSi1-xGex
Nakajima Group
Couplings between topological magnetic orders andconduction electrons have been of increasing interest in
recent condensed matter physics research [1,2]. One of themost well-known examples is the magnetic skyrmion lattice(SkL) discovered in a chiral cubic helimagnet MnSi [1]. The
SkL is composed of topologically-nontrivial vortex like spin
objects, which have finite scalar spin chirality, Si・(Sj × S k),owing to the non-coplanar arrangements of the magnetic
moments. The scalar spin chirality acts as an effective
magnetic field for conduction electrons, and thus induces anunconventional Hall effect, which is known as TopologicalHall Effect (THE). Another example of topological magnetic
orders is a spin-hedgehog-anti-hedgehog (SHAH) latticestate discovered in MnGe [3], which is isostructural to MnSi.
The spin arrangement of SHAH lattice is described by asuperposition of three proper-screw-type magnetic modulations with the q-vectors of (q,0,0), (0,q,0) and (0,0,q). By
calculating spatial distribution of the scalar spin chirality in
the SHAH lattice, one can find that the spin texture can beviewed as periodic arrays of effective magnetic monopoles
and antimonopoles. Although the effective magnetic fields in
the SHAH lattice are cancelled to be zero in zero magnetic
field, an application of an external magnetic fields andresulting distortion of the SHAH lattice can induce a finite
THE. In addition to the THE mechanism for the long-rangeordered non-coplanar magnetic orders, a recent theoretical
study [4] has pointed out that ‘fluctuating’ short range
magnetic order with scalar spin chirality can induce skew
scattering, which leads to Hall effect with opposite sign tothat induced by the long-range non-coplanar orders.
In the present study, we investigate MnSi1-xGex, which
exhibits a variety of Hall effects depending on temperature,magnetic field, and amount of the chemical substitution [5].
Specifically, we focus on x = 0.8 and 0.6 samples; the former
exhibits the same SHAH lattice state as that in the x = 1
sample, while the latter shows another SHAH lattice statecomposed of four q-vectors, specifically (q,q,q), (q,–q,–q),(–q,q,–q) and (–q,–q,q) [5]. To understand the origins of theHall effects in these systems, it is necessary to experimen-

Authors
H. Kikuchi, S. Asai, H. Manakaa, M. Hagihalab, S. Itohb, and T.
MasudaaKagoshima University
bInstitute of Materials Structure Science, High Energy Accelerator
Research Organization

Fig. 1. (a)–(d) Q-dependence of intensity in the x = 0.8 sample
measured at four representative temperatures. (e)–(h) Intermediate
scattering function of I(Q,t) deduced from the selected Q-range given in(a)–(d).

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ISSP Activity Report 2022

References[1] S. Muhlbauer et al., Science 323, 915 (2009).
[2] N. Nagaosa and Y. Tokura, Nat. Nanotech. 8, 899 (2013).
[3] N. Kanazawa et al., Phys. Rev. Lett. 106, 156603 (2011).
[4] H. Ishizuka and N. Nagaosa, Sci. Adv. 4, eaap9962 (2018).
[5] Y. Fujishiro et al., Nat. Commun. 10, 1059 (2019).

[6] S. Aji et al., arXiv:2305.01172

Authors
S. Ajia, T. Odaa, Y. Fujishirob, N. Kanazawaa, H. Saitoa, H. Endoc, M.
Hinod, S. Itohc, T. Arimaa,b, Y. Tokuraa,b, and T. Nakajimaa,baUniversity of Tokyo
bRIKEN Center for Emergent Matter Science
cKEK
dKyoto University

Quasi-Elastic Neutron Scattering Studyon Stretched Polymer Gels
Fig. 2. Temperature dependence of (a) the volume fraction of the static
spin component and (b) the topological Hall resistivity at μ0H = 1.5 T,
measured in the x = 0.8 sample.

tally study the magnetic structures and their fluctuations byneutron scattering.
Figure 1 shows the results of the neutron scattering
measurements on the x = 0.8 sample. The data was obtainedat VIN ROSE (BL06) beamline in Materials and Lifescience experimental Facility (MLF) of J-PARC. We used
the powder sample of MnSi1-xGex with x = 0.8 used in theprevious study in Ref. 5. Figures 1(a)–1(d) show the neutron
diffraction profiles in the low-Q region. At low temperatures, a sharp magnetic Bragg peak was observed at aroundQ = 0.26 Å−1. As the temperature was increased, the intensityof the Bragg peak was reduced, and its position was shifted
toward lower Q region. Finally, the Bragg peak disappeared
above the critical temperature of 150 K, and instead, a broad
diffuse scattering was observed at around Q = 0.15 Å−1.
Figures 1(e)–1(h) show the intermediate correlation function I(Q,t) deduced from the neutron resonancespin echo spectroscopy at VIN ROSE. The Q ranges used
for the data reduction are indicated by colored area in
Figs. 1(a)–1(d). At 50 K, the I(Q,t) remains very close tounity even at 0.03 ns, which is the upper limit of the time
window of the present experiment, indicating that there
is no spin fluctuations and that the magnetic moments are
static. However, near the critical temperature, we observed
the I(Q,t) curve shows the exponential decay, meaningthat the spins are fluctuating with the characteristic time of
approximately 0.01 ns. In Fig. 2(a), we show the fraction of
the fluctuating spin components deduced form the neutron
spin echo experiment as function of temperature, revealingthat the spin fluctuations remain above 60 K. This shows agood agreement with the sign change of the additional Hall
resistivity shown in Fig. 2(b); the additional componentof the Hall resistivity changes from negative to positiveat around 60 K. These observations demonstrated that thedominant contribution of the additional Hall resistivity
changes from the static emergent magnetic field from thelong-range-ordered SHAH lattice to the skew scattering
due to the fluctuating spin cluster with scalar spin chirality
as the temperature is increased. We also performed theneutron spin echo measurements on the x = 0.6 sample in thesame manner as that for the x = 0.8 sample, and carried out
inelastic neutron scattering experiments for both the x = 0.6
and 0.8 samples at HRC (BL12) in MLF of J-PARC. Moredetailed analysis will be published elsewhere [6].

Mayumi Group
Hydrogels, cross-linked polymer networks containing
water, are expected to be applied for biomaterials and themechanical toughness of polymer gels needs to be improved.
The reason for the brittleness of polymer gels is the heterogeneous strain distribution caused by their inhomogeneous
network structure. When a polymer gel is stretched, local
stress concentrates on at short strands between cross-links.
The stress-concentrated strands are highly stretched andbecome potential fracture onsets, which dominates themacroscopic fracture properties of polymer gels.
In this study, the segment/monomer dynamics of polymer

Fig. 1 (a) Dynamic structure factor S(Q, ω) of Homo-gel at λ =1, 2, 3,(b) Q dependence of average relaxation time for Homo-gel at λ =1, 2, 3,(c) Schematic illustration of deformation mechanism for Homo-gel.

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21

Authors
K. Aomura, Y. Yasudaa, T. Yamadab, T. Sakaia, and K. Mayumi
aThe University of Tokyo
bNeutron Science and Technology Center, Comprehensive Research
Organization for Science and Society (CROSS)

Detection of the Spatial Modulation of the
FFLO State in High Magnetic Fields
Kindo and Kohama Groups

Fig. 2 (a) Dynamic structure factor S(Q, ω) of Hetero-gel at λ =1, 2, 3,(b) Schematic illustration of deformation mechanism for Hetero-gel.

gels under uniaxial deformation is investigated by meansof quasi-elastic neutron scattering (QENS) [1]. In order toclarify the effect of heterogeneity in polymer network structure, we prepared two types of polymer gels with controlled
heterogeneities: a homogeneous Tetra-PEG gel prepared by
end-cross-linking of Tetra-arm prepolymers (Homo-gel) [2],and heterogeneous Tetra-PEG gel (Hetero-gel) containing asmall amount of Tetra-PEG prepolymers with shorter arms[3]. Hetero-gel shows a more brittle fracture behavior than
Homo-gel, which suggests a stress-concentration occurs in
Hetero-gel under deformation.
Figures 1 (a) shows S (Q, ω) for Homo-gel under uniaxial
deformation (λ = 1, 2, 3) at Q = 0.8 Å−1. The dynamic structure factors were fitted with a KWW function. As shown in
Figure 1 (b), the average relaxation times (τ) of Homo-gel
decrease with increasing stretching, and the segment/
monomer dynamics in the gel are accelerated by stretching.
Stretching exponent β for the homogeneous gel is notchanged with stretching, suggesting that the local deformation in the gel is kept homogeneous (Fig. 1 (c)).
Figures 2 (a) shows S (Q, ω) of Hetero-gel under uniaxial
deformation (λ = 1, 2, 3) at Q = 0.8 Å−1. A sharp elastic peakcorresponding to slow chain dynamics with a broad base wasobserved under deformation (λ = 2, 3), while only a broad
peak was seen for the un-deformed state (λ =1). This meansthat the slow chain dynamics appears only for the deformed
Hetero-gel. The elastic component can be ascribed to a slow
chain dynamics of highly stretched short strands (Fig. 2 (b)).
When Hetero-gel is stretched, the short strands oriented tothe stretching direction are strongly stretched and the chain
dynamics of the highly deformed chains is suppressed, whichcauses a more brittle macroscopic fracture compared withthat in the case of Homo-gel.
References[1] K. Aomura, Y. Yasuda, T. Yamada, T. Sakai, and K. Mayumi, Soft
Matter, 19, 147 (2023).
[2] T. Sakai, T. Matsunaga, Y. Yamamoto, C. Ito, R. Yoshida, S. Suzuki,
N. Sasaki, M. Shibayama, and U. I. Chung, Macromolecules 41, 5379
(2008).

[3] S. Kondo, H. Sakurai, U. I. Chung, and T. Sakai, Macromolecules 46, 7027 (2013).

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ISSP Activity Report 2022

Superconductivity appears as a result of forming pairsof itinerant electrons by an attractive force. In the caseof conventional superconductivity, the electron pairs arecomposed of electrons with momenta k and −k. In 1964,
Fulde & Ferrell [1] and Larkin & Ovchinnikov [2] proposedthat an imbalanced pairing of up-/down-spin electrons
with momenta k and −k+q, known as the FFLO state, canbe realized in high fields where Zeeman splitting energy
exceeds the superconducting energy gap. In the FFLO state,
the finite total momentum of the pair q modifies the orderparameter of the superconductivity and yields the termcos(qr), which results in spatial oscillations of the superconductivity in real space. Although the spatial modulationof the order parameter is one of the most decisive pieces ofevidence of the FFLO state, it has never been experimentallyobserved.
In order to detect the spatial modulation, we carriedout multi-directional ultrasound measurements of oneof the FFLO candidates, an organic superconductor
κ-(BEDT-TTF)2Cu(NCS)2, in pulsed magnetic fields [3].
Figure 1 shows the magnetic-field dependence of soundvelocity at 1.6 K when polarization vectors of sound waves
u are along the crystal axes parallel to the conducting
plane, b and c. Magnetic fields are applied parallel tothe c axis. From the results of previous studies of thismaterial, the field where the Zeeman energy reaches thesuperconducting energy gap is expected to be about 21 T,
and also, the superconductivity is completely suppressed
above 25 T. Namely, the FFLO state can be stable in
the field range of 21–25 T. Indeed, as clearly seen from

Fig. 1. Anisotropic acoustic response in the FFLO state.Magnetic fielddependence of sound velocity at 1.6 K for u||b (blue) and u||c (red) ina magnetic field along the c axis. Only in the FFLO region between
21–25 T, the sound-wave-direction-dependent response is observed.
The schematics in the inset show the spatial modulation of the FFLO
state composed of superconductivity (red) and normal state (blue). The
striped arrows signify the sound-wave directions, which are parallel tothe polarization vector u.

our results, only in this field region, a distinct difference
appears between the two datasets. It is natural because thespatial modulation produced by the q vector, as shown in
the inset of Fig. 1, must make the superconducting stateanisotropic. Since only the u||b data shows the enhancement of the sound velocity, the emergent superlattice ofthe spatial modulation should be parallel to the b axis. Thismeans that q should orient along the b axis. In the caseof κ-(BEDT-TTF)2Cu(NCS)2, it is expected that antiferromagnetic spin fluctuations along some nesting vectors
mediate the pairing of the superconductivity, and one of
the most predominant nesting direction points towards theb axis. It seems reasonable because an energy gain by better
nesting stabilizes the FFLO state in a low-dimensional superconducting state. This agreement experimentally unveil thenature of the FFLO state occurred in the low-dimensional
superconductivity.
Nowadays the concept of the unique pairing of the FFLO
state has been widely investigated in various physics not
only condensed matter physics but also elemental particle
physics and so on. The present results demonstrate that the
spatial modulation of the FFLO state can be discussed by the
emergent anisotropy of the acoustic properties. Our findings
will facilitate a deeper understanding of the FFLO state.
References[1] P. Fulde and R. A. Ferrell, Phys. Rev. 35, A550 (1964).
[2] A. I. Larkin and Y. N. Ovchinnikov, Zh. Eksp. Teor. Fiz. 47, 1136
(1964).

[3] S. Imajo, T. Nomura, Y. Kohama, and K. Kindo, Nat. Commun.
13, 5590 (2022).
Authors
S. Imajo, T. Nomura, Y. Kohama, and K. Kindo

Fig. 1. Schematic illustrations describing the correspondence between
spin-states and exciton states in LaCoO3.

100 T. LaCoO3 is an archetypal compound having a varietyof spin-states, such as low-spin (LS: S = 0), intermediate
spin (IS: S = 1) and high spin (HS: S = 2) states (SeeFig. 1), which are viewed as vacuum, an exciton, andbi-exciton states, respectively (See Fig. 1). The spin-triplet
exciton condensation will emerge when the magnetic fieldeliminates the spin-gap and changes the vacuum state (LS) toa magnetic exciton state (IS) or bi-exciton state (HS).
Previously in LaCoO3, the field-induced phase transitions are uncovered below 30 K (α phase) and above 30 K
(β phase), which extend beyond 100 T, using magnetization [1] and magnetostriction measurements [2] up to 200 T
generated by single turn coil (STC) method. The two phases
are considered superlattice formation (i.e., solidification) of
the excitons, bi-excitons, and vacuum based on the observa-

Signature of Spin-Triplet Exciton Condensations in LaCoO3 at Ultrahigh Magnetic
Fields up to 600 T
Y. H. Matsuda Group
Bose–Einstein condensation of electron-hole pairs,
exciton condensation, has been effortfully investigated sincepredicted 60 years ago. Irrefutable evidence has still beenlacking due to experimental difficulties in verifying thecondensation of the charge-neutral and non-magnetic spinsinglet excitons. On the other hand, condensation of spintriplet excitons is a promising frontier because spin supercurrent and spin-Seebeck effects will be observable. A canonicalcobaltite LaCoO3 under very high magnetic fields is a propitious candidate, yet to be verified. In this study, we unveil
the exotic phase diagram of LaCoO3 up to 600 T generated using the electromagnetic flux compression method
and the state-of-the-art magnetostriction gauge. We foundcontinuous magnetostriction curves and a bending structure,
which suggest the emergence of two distinct spin-triplet
exciton condensates. By constructing a phenomenologicalmodel, we showed that quantum fluctuations of excitons are
crucial for the field-induced successive transitions. The spintriplet exciton condensation in a cobaltite, which is threedimensional and thermally equilibrated, opens a novel venue
for spintronics technologies with spin-supercurrent such as aspin Josephson junction.
LaCoO3 has been claimed to be a promising candidate
when placed under very high magnetic fields exceeding

Fig. 2. Result of magnetostriction measurement of LaCoO3 shown as afunction of time, along with the magnetic field profiles generated using
the EMFC method. The initial sample temperatures Tini are varied from
5 K to 185 K

ISSP Activity Report 202223

tion of plateaux of magnetostrictions. Considering that themagnetization below 200 T is far from the full polarizationof the spin-states, further orderings of excitons are expected
to appear above 200 T.
The experimental investigation has been challenging
due to the need for very high magnetic fields beyond
100 T which is necessitated by the large spin-gap of~100 K. Besides, one needs to probe the exciton states atsuch high magnetic fields. As solutions to these difficulties,
recently, we reported the generation of 1200 T with electromagnetic flux compression (EMFC) method using a newly
installed capacitor banks system in ISSP [3]. Furthermore,
we succeeded in implementing a state-of-the-art high-speed
100 MHz strain gauge using fiber Bragg grating (FBG) andoptical filter method, which have enabled us to measuremagnetostriction in the μs-pulsed 1000 T environment [4].
Magnetostriction is a crucial probe of the exciton states
because the density of excitons is coupled to the lattice
volume of LaCoO3, where exciton and bi-exciton states havelarger ionic volumes with the occupation of eg orbitals thatis spatially more extended than t2g orbitals as can be seen in
the correspondence of spin-states and exciton states. Solidifications and Bose-Einstein condensations of excitons resultin plateaus and slope of exciton density. Thus, we expectthat they also result in plateaus and slope in magnetostriction
curves at very low temperatures. Note that the correspondences are analogs to the magnetization plateaus and slopes
in magnon solids and superfluids, respectively.
The results of magnetostriction measurements up to
600 T are presented in Fig 2. The new features indicating
magnetic field induced phase transitions are observed. We
summarize the obtained results in the present and previous
studies on a magnetic field – temperature plane as shown in
Fig. 3.
In addition to the data up to 600 T for the α phase andthe β phase, we found novel phase termed γ phase. The
variety of phases indicates the exotic ordering of the exciton
degree of freedom in LaCoO3. We qualitatively discuss thepossibility of two kinds of spin-triplet exciton condensation
realized in LaCoO3 corresponding to the β phase and the γphase. We attributed the origin of the α phase to be a crystallization of excitons. The study indicates the complicatedinteractions and symmetry breakings are in play in LaCoO3

Fig. 3. Summary of the magnetostriction measurement of LaCoO3 on amagnetic field-temperature plane up to 600 T along with the previously
obtained data using magnetization and magnetostriction measurements

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ISSP Activity Report 2022

placed at ultrahigh magnetic fields [5].
References[1] A. Ikeda, T. Nomura, Y. H. Matsuda, A. Matsuo, K. Kindo, and K.
Sato, Phys. Rev. B 93, 220401(R) (2016).
[2] A. Ikeda, Y. H. Matsuda, and K. Sato, Phys. Rev. Lett. 125, 177202(2020).
[3] D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda, and S.
Takeyama, Rev. Sci. Instrum. 89, 095106 (2018)[4] A. Ikeda, T. Nomura, Y. H. Matsuda, S. Tani, Y. Kobayashi, H.
Watanabe, and K. Sato, Rev. Sci. Instrum. 88, 083906 (2017).
[5] A. Ikeda, Y. H. Matsuda, K. Sato, Y. Ishii, H. Sawabe, D.
Nakamura, S. Takeyama, and J. Nasu, Nat. Commun. 14, 1744 (2023).
Authors
A. Ikedaa, J. Nasub, and Y. H. Matsuda
aUniversity of Electro-Communications
bTohoku University

Closing the Hybridization Charge Gap
in the Kondo Semiconductor SmB6
with an Ultrahigh Magnetic Field
Y. Matsuda GroupIn materials with strong electron correlation, thenontrivial energy-band structure beyond the single-electron
picture gives rise to exotic properties. SmB6 is a typical
Kondo semiconductor, whose hybridization gap has been
estimated to be 5–20 meV. In addition to the strong electron
correlation in SmB6, the valence fluctuation of the Sm ion
and possible topological surface state induce a complicatedenergy band structure. Under sufficiently high magnetic
fields, the energy bands are shifted by the Zeeman effectand the evolution in magnetoresistance gives information tounderstand the complicated electronic states. However, anultra-high magnetic fields above 100 T is required to achieve
the field-induced semiconductor–metal (S–M) transition,
which leads to the difficulty in observing the details of theevolution of the magnetoresistance up to the S–M transitionin SmB6 with high sensitivity.
In this research, we utilized the electromagnetic fluxcompression (EMFC) technique [1] to generate ultra-highmagnetic fields up to 320 T. The high-frequency electricalresistivity was measured using a contactless radio-frequency
impedance measurement method developed by the authors[2], which demonstrates the observation of the upper
critical magnetic field in cuprate superconductor [3] and theS–M phase transition in narrow-gap semiconductor [4]. The
measurement SmB6 sample (typically 1 × 1 × 0.05 mm3)
was mounted on a self-resonant spiral probe coil with thediameter of 1 mm so that the〈100〉axis was parallel to themagnetic field. A radio-frequency voltage tuned around
700 MHz was applied to the probe coil and the reflectedsignal was acquired by the digital oscilloscope. The amplitude of reflected signal was obtained by the numericallock-in method, and then converted to electrical resistivity byusing the temperature dependence of signals measured justbefore applying the pulsed magnetic field.
Figure 1 shows the magnetic field dependence of thehigh-frequency electrical resistivity at 6.5 K, 16 K and 24 K
(initial temperature just before applying the pulsed magnetic
field) obtained from independent EMFC experiments up to
320 T [5]. The AC (50 kHz) magnetoresistances up to 55 T
generated by the non-destructive pulsed magnet are alsopresented for comparison (black curves). At 16 K and 24 K,
the data obtained by the EMFC and non-destructive magnet

[5]. Four black dashed-dotted and dotted curves represent
the temperature evolution in the sample during the independent EMFC experiments, which arises from the extremely
short pulse of the magnetic field generated by the EMFC
technique.
By connecting the boundary points (the fields exhibiting
the anomalies in the resistivity), four independent states (S1,S2, M′, and M) are defined in the phase diagram. Semiconducting state S1 is phenomenologically characterized byfrequency-independent magnetoresistance and metallization at Bhyb ~ 180 T. The high-field M phase is likely to be anormal paramagnetic metal. The low-temperature semiconducting state S2 exhibits frequency-dependent magnetoresistance, and becomes metallic in the low-frequency transport
at B1 although the hybridization gap is still open. We suggestthat the observed transition at B1 relates with the energy
scale of quasiparticles such as the spin polaron in the in-gap
state.

Fig. 1. Magnetic field dependence of the electrical resistivity at 6.5 K,
16 K, and 24 K. The AC magnetoresistances with 50 kHz up to 55 T
generated by the non-destructive pulsed magnet are also presented forcomparison (black curves).

experiments coincide well each other, indicating the highreliability of the results of EMFC experiments. The highfrequency resistivity gradually decreases with increasing themagnetic field and the field-induced S–M transition appears
around 180 T by closing the hybridization gap in SmB6.
On the other hand, at 6.5 K, the resistivity obtained by the
EMFC experiments significantly increases up to ~80 T,
different from the result of non-destructive magnet experiment. This indicates a significant frequency dependence ofelectrical resistivity at low temperatures, and the scattering
process for the carriers changes around 80 T at low temperatures. This is also suggested by an anomaly of temperaturedependence of the electrical resistivity around 12.5 K underzero magnetic field.
Figure 2 presents the phase diagram of SmB6 constructedbased on the experimental findings in the present research

Fig. 2. Temperature–magnetic field phase diagram of SmB6. B1 (closed
circle) and Bhyb (closed square) are taken from the results of the EMFC
experiments. critical temperature T * (closed triangle and diamond) istaken from the nondestructive magnet and PPMS experiments. The thindashed-dotted and dotted curves indicate the temperature evolution
during the magnetic-field pulse. Each state is separated by bold guidelines for a clear view, whose identifications are described in the main
text.

References[1] D. Nakamura et al., Rev. Sci. Instrum. 89, 95106 (2018).
[2] D. Nakamura, M. M. Altarawneh, and S. Takeyama, Meas. Sci.
Technol. 29, 035901 (2018).
[3] D. Nakamura et al., Sci. Rep. 9, 16949 (2019).
[4] D. Nakamura et al., Phys. Rev. Lett. 127, 156601 (2021).
[5] D. Nakamura et al., Phys. Rev. B 105, L241105 (2022).
Authors
D. Nakamuraa, A. Miyake, A Ikedab, M. Tokunaga, F. Igac, and Y. H.
MatsudaaRIKEN Center for Emergent Matter SciencebUniversity of Electro-Communications
cIbaraki University

Gradual Charge Order Melting in
Bi0.5Ca0.5MnO3 Induced by Ultrahigh
Magnetic Fields
Y. H. Matsuda Group
Perovskite-type manganite series AMnO3 (A = nonmagnetic ion) is the long standing one of the central subjects
in condensed matter physics. Because of the coupling among
the spin, charge, and orbital degrees of freedom, a lot ofabundant exotic physical phenomena appear.
Electronic ground state of perovskite-type manganites isdetermined by the balance of the several interactions suchas the Jahn-Teller coupling, on-site and inter-site Coulomb
repulsion, superexchange interaction, and double exchangeinteraction.
Magnetic field effect on the ground state is significantly important subject in the perovskite-type manganites.
The melting of the charge ordered (CO) state by applying
magnetic fields is one of the central issues. This CO melting
phenomenon sometimes accompanies the giant resistancechange which is known as the colossal magnetoresistance.
The CO state in the perovskite-type manganites including
Bi ions as A site (Bi1-xAExMnO3 ; AE = Ca or Sr) is morestable than that in the manganites including rare earth ions as
A site (Ln1-xAExMnO3 ; Ln = rare earth element). The transition temperature of CO in Bi0.5Ca0.5MnO3 (TCO = 322 K) is
higher than that in most of the rare earth systems with x =0.5. The detailed investigation of the magnetic field effecton the CO phase in perovskite-type manganites with Bi ionswould be interesting. However, the ultrahigh magnetic fields
exceeding 100 T are needed for that investigation [1,2].

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25

frozen by decreasing temperature, therefore the phase transition can be broad in the field ascending process. On the other
hand, the spatial inhomogeneity will become less because theelectron becomes itinerant in the CO melting region under
the ultrahigh magnetic field. As a result, the metamagnetictransition can be sharp in the field descending process.
Another possible reason related to the slow dynamics isthe critical slowing down owing to the quantum criticality of
antiferromagnetic order.
Finally, we constructed the B-T phase diagram of
Bi0.5Ca0.5MnO3 (Fig. 2).
For further investigation of the unusual CO melting
phenomenon, the magnetostriction, resistivity, and XRD
measurement under ultrahigh magnetic fields will be
performed.
Fig. 1. Magnetization curves at 293 K (up to 120 T), 70 K (140 T),
and 11 K (140 T). Red and blue lines represent the field ascending anddescending processes, respectively. Black line is the dM/dB at 4.2 K
up to 40 T measured by the nondestructive method. Critical fields aremarked by red and blue open circles in the field ascending (Bcup) anddescending processes (Bcdown), respectively. Green open circles markthe critical field of the metamagnetic transition which appears around
10 T below TN. The estimated error bar is shown for each measurement.

In this research [3], we tried to reveal the magnetic
properties of Bi0.5Ca0.5MnO3 under ultrahigh magnetic
fields by means of the magnetization measurements up to
140 T over a wide temperature range from 11 to 293 K. We
prepared the single crystals by Bi2O3 flux method, and thesample characterization was performed by XRD, SEM, andmagnetic susceptibility measurement by MPMS. The powder
sample prepared by crushing and grinding the obtained
crystals was used for the magnetization measurements.
We revealed that the CO in Bi0.5Ca0.5MnO3 can bemelted by applying the magnetic field at the room temperature (293 K) (Fig. 1). It is observed as the metamagnetictransition. At low temperatures, the CO melting phase transition in the field ascending process becomes broad. However,
the CO reformation can be observed clearly in the fielddescending process (Fig. 1). This asymmetric broadening
phenomenon can be understood by the gradual CO melting
induced by the ultrahigh magnetic fields.
This asymmetric broadening of the CO melting ispossibly explained by the spatial inhomogeneity of charge
distribution. In perovskite-type manganites, a spatial
inhomogeneity of charge distribution the one of the attractive
subjects and the important factor for the electronic groundstate and phase transitions. The spatial inhomogeneity will be

Fig. 2. B-T phase diagram constructed. Electronic and magnetic statesin the low-field region have been reported in several previous studies.

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ISSP Activity Report 2022

References[1] A. Kirste et al., Phys. Rev. B 67, 134413 (2003).
[2] S. Takeyama et al., J. Phys. Soc. Jpn. 81, 014702 (2011).
[3] Y. Ishii, A. Ikeda, M. Tokunaga, K. Kindo, A. Matsuo, and Y. H.
Matsuda, J. Phys. Soc. Jpn. 92, 074702 (2023).
Authors
Y. Ishii, A. Ikedaa, M. Tokunaga, K. Kindo, A. Matsuo, and Y. H.
MatsudaaUniversity of Electro-Communications

Metastable Quantum Phasein Adiabatic Condition
with the Spin-Lattice Separation
Y. H. Matsuda, Kohama, and Kindo Group
Several low-dimensional spin systems exhibit exotic
magnetization processes such as magnetization plateaux asa result of the appearance of exotic quantum phases. The
spin-ladder materials are intriguing because they possessintermediate properties between one- and two-dimensions.
The two-leg spin-ladder compound 3, 3′, 5, 5′-tetrakis(Ntert-butylaminoxyl)biphenyl: C28H42N4O4 (BIP-TENO) was
synthesized as the first S = 1 two-leg spin ladder, where S is
the spin quantum number. In BIP-TENO, the nontrivial 1/4
magnetization plateau was observed in the magnetic field
range from 42 to 66 T and theoretically analyzed [1]. To
explain the 1/4 plateau, the authors of Ref. [1] introduced
the second-nearest-neighbor (diagonal direction) and thirdnearest-neighbor (leg direction) exchange interactions andfound that the third-nearest-neighbor exchange interaction
is more essential for the appearance of the 1/4 plateau. Theyobtained the magnetization by a numerical diagonalization.
Although further successive phase transitions to the 1/2
and 3/4 plateau states are theoretically predicted [1], they
were never experimentally observed because the requiredmagnetic field is as strong as 150 T, which is only available
employing a destructive manner [2]. In the present study, theentire magnetization process of BIP-TENO is investigatedin ultrahigh magnetic fields of up to 150 T using the singleturn coil that is one of the destructive means for ultrahighmagnetic field generation. It is unveiled that 1/3 and 2/3
plateaus appear in addition to the previously discussed 1/4,
1/2, and 3/4 plateaus. Moreover, the 1/3 and 2/3 plateaus arefound to appear only when the magnetic field is swept in a
microsecond timescale. The adiabatic condition is likely tobe necessary for its observation, suggesting that the newly
observed plateaus are metastable states.

The single crystals of BIP-TENO were used. The typicaldimensions of the crystal used are 2 ~ 4 × 0.5 × 0.2 mm3and the direction of the long side is parallel to the c-axis.
Three or four single crystals were used for the magnetization
measurement to obtain the larger signal. In the pulsed-field
experiments, magnetic fields (B) were applied parallel to thec-axis of the crystal that is parallel to the leg direction of thespin ladder. The ultrahigh magnetic fields were generatedusing the single-turn coil. The magnetization was measured
using a self-compensated parallel-type pickup coil. The
sample temperature was lowered by directly immersing thesample in liquid helium or by putting the sample in flowing
cold helium gas.
Figure 1 shows the magnetization process measured at
4.2 K with the single-turn coil up to approximately 100 T (ared curve) [3]. The pulse duration is about 7 μs. In the figure,the previously reported magnetization curve at 1.3 K [1] isalso shown for comparison (a green curve). A nondestructive
magnet with a 5 ms duration was used in this measurement.
The 1/4 plateau is observed in both (red and green)
curves. The striking difference is seen in the length of theplateau: the plateau ends at around 50 T and a new plateau
appears after that in the red curve, while it continues toaround 70 T. One may wonder whether this distinct difference can be caused by the temperature difference because
the fast magnetic field changes potentially induce thetemperature change due to the magnetocaloric effect. Hence,
we investigated the magneto-caloric effect and found that
although temperature decreases by several degrees withincreasing the magnetic field in adiabatic conditions, theplateau lasts at least up to 60 T and no new plateau emerges
at around 50 T [3]. This fact excludes the possibility thatthe different temperatures cause the different magnetization
processes.
The measurement of the magnetostriction solved thismysterious question. We found that the leg direction of thecrystal shrinks when the spin gap closes. The fiber Bragg
grating method was utilized. The shrinkage of the lattice also
causes a dissipation process and causes some heat production, which was detected in our magnetocaloric effect.
Figure 2 shows the shrinkage of the lattice when apulsed magnetic field is applied as a function of time [3].
The lattice shrinks when a magnetic field is applied slowly

Fig. 2. The magnetostriction ΔL / L and the magnetic field are plotted
as a function of time. The striction is seen in high magnetic fields asshown in (a) and (b), while it is absent when the magnetic field pulse isshort as shown in (c) and (d).

(Fig. 2 (a)). However, the response of the lattice is delayed
for the shorter field pulse (Fig. 2 (b)), and then, interestingly,
the lattice doesn’t move if the magnetic field pulse is shortenough (Fig. 2 (c.) (d)). The threshold time is around 1 ms,
which gives the answer to why the two different magnetization processes are observed with fast and slow magnetic field
pulses.
The red curve in Fig. 1 is a magnetization process forthe spins at the original lattice sites. The length of the 1/4
plateau suggests the strength of the interaction given by thezero-field crystal lattice. The new plateau following the 1/4
plateau seems to be assigned to the 1/3 plateau which has
been proposed to emerge in a recent theoretical study [4].
The longer 1/4 plateau seen in the green curve in Fig. 1 is
explained by an enhancement in the exchange interaction
along the leg direction due to the contraction of the leg direction by a magnetic field.
In summary, the slow contraction of the crystal in theleg direction by the application of a magnetic field stabilizes the 1/4 plateau and hinders the following 1/3 plateau.
The novel 1/3 plateau is a metastable state where the crystal
lattice maintains the original form within a short time in therange of microseconds. This metastable quantum phase is a
result of the spin-lattice separation and has hardly ever been
observed before.
References[1] T. Sakai, N. Okazaki, K. Okamoto, K. Kindo, Y. Narumi, Y.
Hosokoshi, K. Kato, K. Inoue, and T. Goto, Phys. B: Condens. Matter
329, 1203 (2003).
[2] N. Miura, T. Osada, and S. Takeyama, J. Low Temp. Phys. 133, 139(2003).
[3] K. Nomura, Y. H. Matsuda, A. Ikeda, Y. Kohama, H. Tsuda, N.
Amaya, T. Ono, and Y. Hosokoshi, Phys. Rev. B 105, 214430 (2022).
[4] H. Kohshiro, R. Kaneko, S. Morita, H. Katsura, and N. Kawashima,
Phys. Rev. B 104, 214409 (2021).
Authors
K. Nomura, Y. H. Matsuda, A. Ikedaa, Y. Kohama, H. Tsudab, T. Onoc,
and Y. Hosokoshic
aThe University of Electro-Communications
bNational Institute of Advanced Industrial Science and Technology
cOsaka Metropolitan University

Fig. 1. Magnetization process of a single crystal of BIP-TENO
measured within 7 μs using the single-turn coil (red curve). The green
curve shows the magnetization process of BIP-TENO measured in anon- destructive pulsed magnetic field with a duration of 5 ms.

ISSP Activity Report 2022

27

Field-Induced Insulating Statein a Topological Insulator BiSb Alloy
Tokunaga Group
Applying high-enough magnetic fields on metals realizes
the quantum limit states, in which all the carriers are accommodated in the lowest Landau level. Since the carriers are
confined in the smallest cyclotron orbit, the kinetic degree of
freedom normal to the field is suppressed in this state. Thus,
the ratio between Coulomb interaction and bandwidth, ameasure of electron correlation, grows as the field increases.
Such strong correlation in the quantum limit state can realize
anomalous quantum state, like the fractional quantum Hall
effect in two-dimensional electron systems. On the other
hand, it is an open question what kind of quantum states
can be realized by the effect of a strong correlation in thequantum limit state of a three-dimensional system [1]. In
particular, quantum limit states of semimetals in whichelectrons and holes coexist are ideal platforms for realizing
novel quantum states.
In this context, we focused on narrow gap semiconductors in which the gap can be closed by external magnetic
fields, as illustrated in Fig. 1. Continuous valence andconduction bands at a zero magnetic field split into discrete
Landau sub-bands in finite magnetic fields. These Landau
sub-bands can be continuously shifted by a magnetic fieldwith the Zeeman and cyclotron energies. We can close thegap in some materials at a specific field, causing semiconductor-semimetal transition at a critical field of Bc. The
realized semimetallic state is a spin-polarized quantum limit
state. We can expect the emergence of a novel quantum state
above Bc.
As a target, we focus on a BiSb alloy. The BiSb alloys
have attracted renewed interest after recognized as the firstexample of topological insulators [2]. Applying a magnetic
field to this system can close the gap due to the levelcrossing of spin-split Landau levels in the conduction andvalence bands. We found that further magnetic field application realizes an insulating state in this realized field-induced
semimetallic state.
Figure 2 shows longitudinal magnetoresistance in asingle crystal of Bi1-xSbx (x = 0.10) at various temperatures

Fig. 2. Longitudinal magnetoresistance of Bi1-xSbx (x = 0.10) in a fieldalong the three-fold rotational axis of the crystal. A semiconductorsemimetal transition is induced at 11 T. Additional insulating behavior
appears at a field ~ 20 T below a temperature of 4 K, as marked with a
red arrow.

[3]. Here, magnetic fields and electric currents are appliedalong the three-fold rotational axis of the crystal. In this field
direction, Zeeman energy in the valence band is significantly
larger than the cyclotron energy, so the application of the
field higher than 11 T causes a semiconductor-semimetaltransition at this field. Our results of magnetoresistance show
metallic behavior above 11 T while causing insulating again
at around 20 T and temperatures below 4 K.
This field-induced semimetallic state is a spin-polarized
quantum limit state, in which we expect a strong correlation effect. The correlation effect in such an electron-holesystem has been expected to host the BEC or BCS state of
excitons (excitonic phase) at the vicinity of the zero-gap
state. Estimation from our experimental results revealed thatthe binding energy between an electron and a hole becomes
0.3 meV, which is comparable to the thermal energy of 4 K.
In addition, interparticle distance becomes also comparablewith the thermal de Broglie length below 3 K. These estimations suggest possible emergence of the excitonic phase in
BiSb.
The electron-hole systems of semimetals in magnetic
fields can reproduce the electron-proton system under
extremely high magnetic fields [4]. Suppose the effect of amagnetic field is measured by the ratio of cyclotron energy
to Rydberg energy. In that case, the magnetic field effect is
amplified in semimetals with small effective mass and large
relative permittivity. Applying a magnetic field of 20 T to
this BiSb alloy results in this ratio γ of ~ 4000, corresponding
to a situation in which a magnetic field of one billion Tesla isapplied to hydrogen atoms. What happens when the numberof positive and negative carriers is continuously increased
from zero under such conditions? Our results in a semimetal
may reproduce the quantum state exhibited by hydrogenatoms in a billion Tesla magnetic field.
References[1] B. I. Halperin, Jpn. J. Appl. Phys. 26, 1913 (1987).
[2] D. Hsieh et al., nature 452, 970 (2008).
[3] Y. Kinoshita et al., Phys. Rev. B 107, 125140 (2023).

Fig. 1. Schematic of field-induced semiconductor-semimetal transition.
Application of magnetic field changes continuous dispersion at a zeromagnetic field (a) to discrete Landau sub-bands (b). In some materials,
we can close the gap at a critical field of Bc (c) and realize a spinpolarized quantum limit state in a semimetallic phase (d). As illustrated
in the inset, the electron-hole system in semimetals can reproduce anelectron-proton system in an extremely high magnetic field.

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ISSP Activity Report 2022

[4] Y. Kuramoto, Hankinzokuchu no Densi-Seikou Soukan to
Chouonpa no Kyodai Ryousigensui (in Japanese) (Kyoritsu 1982).
Authors
Y. Kinoshita, T. Fujita, R. Kurihara, A. Miyake, Y. Izakia, Y. Fuseyab,
and M. Tokunaga
aTokyo Institute of Technology
bUniversity of Electro-Communications

Correlation-Driven Organic 3D
Topological Insulator
with Relativistic Fermions
Kohama and Kindo Group
Topological insulators (TIs) are a new class of materials
that possess both bulk insulating and exotic surface/edge
states. Conventionally, realizing a TI state usually requires astrong spin–orbit coupling (SOC) of heavy elements, leading
to a band inversion and an insulating bulk gap. Consequently, it is challenging to observe a TI state and its unique
physical features in light-atom materials, such as carbonbased systems, because of their weaker SOC. Recent theoretical studies propose a new pathway to realize a TI state via
strong electron correlation, where the Coulomb interaction
induces the bulk gap [1, 2]. Such correlation-driven TIs
hold great scientific significance as they expand the scopeof materials capable of forming TI states and potentiallyintroduce new functions unique to correlated systems. An
organic conductor α-(BETS)2I3 is a theoretical candidate forsuch correlation-driven TIs [3]. Nonetheless, experimental
evidence to determine the accurate electronic state of thiscompound has been scant.
In our recent work [4], we performed magnetotransportmeasurement for α-(BETS)2I3 using pulsed high fields up
to 60 T to clarify the low-temperature electronic state ofthis compound. Fig. 1a shows the longitudinal magnetoresistance (MR) measured at several temperatures. As shownin Fig. 1a, a large negative MR is observed below 4 K. This
negative longitudinal MR resembles the MR induced bythe "chiral anomaly" which is typically observed in threedimensional (3D) Dirac or Weyl semimetals under parallel
electric and magnetic fields (Fig. 1b). This result implies
the presence of 3D relativistic particles (Weyl particles) in
α-(BETS)2I3. The chiral-anomaly-induced negative MR is
expected to be proportional to the square of the magnetic
field. As shown in Fig. 1c, the inverse value of MR (written
as MG in this report) at low temperatures is well-fitted by aquadratic function across a broad range of magnetic fields.

Fig. 2. a Current–voltage (I – V ) characteristic measured at several
temperatures using the four-terminal dc method with constant currents.
A nonlinear conduction effect is observed in the wide current range. b
Current dependence of the sample resistance (V/I ). In the low current
region, V/I is a constant value followed by Ohm’s law. As the appliedcurrent increases, the sample resistance decreases by several orders ofmagnitude.

Moreover, unlike the longitudinal MR, the transverse MR ofthis compound exhibits positive [4], which is also consistent
with the characteristics of the 3D-Dirac/Weyl system. Ourfindings suggest that the band structure of α-(BETS)2I3 has a
Dirac-type dispersion with a very small gap, coinciding withthe correlation-induced TI state theorized for this compound.
Next, we measured the current-voltage (I-V) character ofthis compound to observe a unique functionality of the correlation-driven TI state. As shown in Fig. 2a and 2b, we foundthat this compound shows a significant negative-differential
resistance at low temperatures where a resistance (V/I)
reduces by 3~4 orders of magnitude upon current application. This indicates that the low-temperature insulating stateof this compound can be switched to a metallic state under
external currents. Such metal-insulator switching due tocurrent application is a phenomenon often seen in materials
becoming insulating due to electron correlation [5] and is nota characteristic of conventional TIs.
Our experimental results provide evidence for thetheoretical prediction that α-(BETS)2I3 is a TI. This is
the first discovery of a TI composed of organic materials.
Furthermore, this TI state can be manipulated into otherelectronic states using external fields, which has a potential for industrial application. We desire to deepen our
understanding of the physical properties of organic TIs andadvance further material development through research on
analog compounds.
References[1] S. Raghu, X. L. Qi, C. Honerkamp et al., Phys. Rev. Lett. 100,
156401 (2008).
[2] D. Ohki, K. Yoshimi, and A. Kobayashi, Phys. Rev. B. 105, 205123(2022).
[3] S. Kitou, T. Tsumuraya, H. Sawahata et al., Phys. Rev. B 103,
035135 (2021).
[4] T. Nomoto, S. Imajo, H. Akutsu et al., Nat. Commun. 14, 2130
(2023).

[5] F. Sawano, I. Terasaki, H. Mori et al., Nature 437, 522 (2005).

Fig. 1. a Longitudinal MR of α-(BETS)2I3 (I // B). The magneticfield dependence of MR was measured at several temperatures. The
quadratic negative magnetoresistance can be observed below 4  K. b
Schematic of the charge flow induced by chiral magnetic effect (CME).
In a magnetic field, the positive magnetoconductance (MG) due to thechiral anomaly flows between two Weyl nodes with different chirality
x = ±1. c MG at 1.6 K. The green dashed line denotes the fitting curve
MG = CaB2 with Ca = 4.92 × 10−4. Below 15 T, MG follows B2 dependence, indicating the CME-induced MR. Inset: Expanded figure of
MG at 1.6 K. The hump-like positive MG can be observed below 5  T,
implying weak localization.

Authors
T. Nomoto, S. Imajo, H. Akutsua, Y. Nakazawaa, and Y. Kohama
aOsaka University

ISSP Activity Report 2022

29

Rise of Nonlinear Soft X-Ray Spectroscopy
I. Matsuda Group
X-ray spectroscopy has been a powerful technique toprobe electronic states in materials. The light-matter interaction is based on a linear-response but it becomes non-linear
when the intensity of incident light is significantly high.
Recently, developments of X-ray free electron laser (XFEL)
have led to our observation of the second harmonic generation, one of the well known non-linear optical phenomena,
with soft X-ray (SX-SHG)[1]. A SX-SHG event occurs
only when the inversion symmetry of the targeted system
is broken and the signal is element-specific. These uniquecharacters have pushed to apply SX-SHG for spectroscopyof materials science. However, it is often difficult to acquirea pure SX-SHG beam from a sample when the intensity
is as small as second-harmonic radiation, generated on
off-axis at the undulators. Such signal contamination isharmful for discussing genuine properties of SHG from any
target sample. To overcome the situation, we developed andinstalled a new ellipsometry method for soft X-ray SHG
experiment, as shown in Fig.1, to suppress the contribution of second-harmonic light from the XFEL beamline [2].
By the collaboration with RIKEN, we have also developed
an experimental chamber of SX-SHG and opened for the
SACLA users. We have successfully detected the broken
inversion symmetry in the polar metal phase of LiOsO3 withan enhanced feature above the Li K-edge that reflects thedegree of Li atom displacement [3]. In a noncentrosymmetric crystal of LiNbO3, elemental contributions by lithium
and niobium were apparently distinguished by energy dependent SX-SHG measurements [4]. We have also probed thelithium mobility at a solid electrolyte surface to develop the
Li-ion battery [5].
These research have applied the novel measurement
method for investigation of crystallographic or electronic
properties. The sensitivity to magnetism has remained
elusive. Though a magnetic moment as an axial vector
does not break the bulk inversion symmetry, it lowers thesymmetry at interfaces, and thus should make additional
contributions to SHG. While X-ray linear spectroscopies
such as X-ray magnetic circular dichroism are useful toelement-selectively study the magnetic properties of amaterial, it averages inevitably information over a certain
depth along the incident light. To meet the demand of

Fig. 1. Soft X-ray SHG data of GaAs(100) taken at the As M absorption
edge, recorded with the ellipsometry method. The incident photon (I0)beam was set at hν = 75 eV and the SHG signal (I) was detected at 2hν
= 150 eV. The measurement geometries for the ellipsometry rotation
angles at (a) χ = 0° and (b) −90°. Intensity curves of the SHG signals
are shown in (c) and (d) that were taken by (a) and (b), respectively.

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ISSP Activity Report 2022

Fig. 2. SX- magnetization induced SHG (MSHG) from the [Au/Fe/
MgO]4 sample. 2hν intensity plot with respect to the incident beam
intensity I0 at 2hν = 56 eV under magnetic field as indicated. Photon
energy of 56 eV corresponds to the Fe M-edge resonance. Solid curves
represent the results of fitting with nonlinear curves.

frontier technology, such as spintronics, that utilizes
magnetic materials with complicated multilayered structure, it is, thus, useful to develop an element-selective
method that can exclusively probe interface magnetism.
We developed a magnetization induced SHG for soft X-ray(SX-MSHG) measurement system and made a demonstration for an Fe-based multilayer samples with broken inversion symmetry [6]. At the Fe M-edge resonance condition,
we observed, as shown in Fig. 2, a clear dependence of
SX-MSHG on the direction of applied magnetic field, eventhough the field was along the hard magnetization axis andthus the magnetization was only a small fraction of thesaturation value. The results indicate high sensitivity of themeasurement likely due to inner-shell resonance. By further
deepening the understanding of its unique characteristics,
SX-MSHG could be developed into a solid technique toelement-selectively probe interface magnetism.
Through the technical efforts, research of the nonlinear
optical effect in the soft X-ray region has evolved into amethod of nonlinear soft X-ray spectroscopy. The uniquecharacters of both the interface- and element-selectivity areuseful for unveiling electronic and magnetic properties of thecomplicated compounds that provide various functionalities.
Nonlinear X-ray spectroscopy is expected to become one of
the standard analysis methods for materials science.
References[1] Sh. Yamamoto, T. Omi, H. Akai, Y. Kubota, Y. Takahashi, Y.
Suzuki, Y. Hirata, K. Yamamoto, R. Yukawa, K. Horiba, H. Yumoto, T.
Koyama, H. Ohashi, S. Owada, K. Tono, M. Yabashi, E. Shigemasa, S.
Yamamoto, M. Kotsugi, H. Wadati, H. Kumigashira, T. Arima, S. Shin,and I. Matsuda, Phys. Rev. Lett. 120, 223902 (2018).
[2] T. Sumi, M. Horio, T. Senoo, T. Wada, Y. Tsujikawa, X. Zhang, P.
Manset, M. Araki, Y. Hirata, W. S. Drisdell, J. W. Freeland, A. Amado,
M. Zuerch, Y. Kubota, S. Owada, K. Tono, M. Yabashi, C. P. Schwartz,
and I. Matsuda, e-J. Surf. Sci. Nanotechnol. 20, 25 (2022).
[3] E. Berger, S. Jamnuch, C. B. Uzundal, C. Woodahl, H. Padmanabhan, A. Amado, P. Manset, Y. Hirata, Y. Kubota, S. Owada, K.
Tono, M. Yabashi, C. Wang, Y. Shi, V. Gopalan, C. P. Schwartz, W.
S. Drisdell, I. Matsuda, J. W. Freeland, T. A. Pascal, and M. Zuerch,Nano Letters 21, 6095 (2021).
[4] C. B. Uzundal, S. Jamnuch, E. Berger, C. Woodahl, P. Manset, Y.
Hirata, T. Sumi, A. Amado, H. Akai, Y. Kubota, S. Owada, K. Tono,
M. Yabashi, J. W. Freeland, C. P. Schwartz, W. S. Drisdell, I. Matsuda,
T. A. Pascal, A. Zong, and M. Zuerch, Phys. Rev. Lett. 127, 237402(2021).
[5] C. Woodahl, S. Jamnuch, A. Amado, C. B. Uzundal, E. Berger, P.
Manset, Y. Zhu, Y. Li, D. D. Fong, J. G. Connell, Y. Hirata, Y. Kubota,
S. Owada, K. Tono, M. Yabashi, S. Tepavcevic, I. Matsuda, W. S.
Drisdell, C. P. Schwartz, J. W. Freeland, T. A. Pascal, A. Zong, andM. Zuerch, Nat. Mater. (2023). https://doi.org/10.1038/s41563-02301535-y[6] T. Sumi, M. Horio, T. Senoo, Y. Kubota, G. Yamaguchi, T. Wada,
M. Miyamoto, K. Yamaguchi, Y. Tsujikawa, Y. Sato, M. Niibe, Y.
Hirata, Y. Miyauchi, D. Oshima, T. Kato, S. Owada, K. Tono, M.
Yabashi, and I. Matsuda, Appl. Phys. Lett. 122, 171601 (2023).
AuthorI. Matsuda

Real-Time Observationof the Woodward-Hoffmann Rulesfor 1,3-Cyclohexadiene by Femtosecond
Soft X-Ray Transient Absorption
Itatani GroupThe stereochemistry of pericyclic reactions is explainedby orbital symmetry conservation, referred to as the
Woodward-Hoffmann (WH) rules. Although these rules havebeen verified by the structures of reactants and products,
the temporal evolution of the orbital symmetry during thereaction has not been clarified. Herein, we used femtosecond
soft X-ray transient absorption spectroscopy to elucidate thethermal pericyclic reaction of 1,3-cyclohexadiene (CHD)
molecules, i.e., its isomerization to 1,3,5-hexatriene. In thepresent experimental scheme, the ring-opening reaction
is driven by the thermal vibrational energy injected byphotoexcitation to the Rydberg states at 6.2 eV and subsequent femtosecond relaxation to the ground state of CHD
molecules. The direction of the ring opening, which can beconrotatory or disrotatory, was the primary focus (see Fig.
1), and the WH rules predict the disrotatory pathway in thethermal process.
We focused on the K-edge absorption of the carbon
atom from the 1s orbital to vacant molecular orbitals around
285 eV, because the K-edge absorption energy depends on
the local environment of a carbon atom and could be sensitive to the transient molecular structure [1]. We expect toidentify the transient molecular structures by the K-edge
absorption. The BiB3O6-based optical parametric chirped
pulse amplifier is used to produce carrier-envelope phasestable intense infrared pulses (center wavelength 1.6 μm,
pulse energy 1 mJ, pulse duration 10 fs at 1 kHz). This
output is focused into Ne-filled gas cell to produce soft-Xray continua covering the carbon K-edge, and the transmitted
spectrum through the CHD-filled gas cell is measured by agrating spectrometer. The second harmonic (wavelength 400nm) from the Ti:sapphire laser amplifier is used to pump the
CHD molecules by two-photon absorption. Figure 2 shows
the stationary carbon K-edge absorption spectrum of CHD(upper panel) and the time-resolved difference spectra (ΔA)
at the designated delay time (lower panel).
The ultrafast relaxation from the Rydberg states to theground state with a time constant of 26 ± 7 fs is identified

Fig. 2. Stational absorption spectrum and time-resolved ΔA spectra.

by the disappearance of the bleaching of peak X observed
at 0 fs. Another interesting feature in the time-resolved
ΔA spectra is that the induced absorption band temporally
appears between 340 and 600 fs at a higher absorptionenergy than peak X indicated by the arrows in Fig. 2. A
theoretical investigation predicts that the transient molecular
structures along the disrotatory pathway have higher K-edge
absorption than peak X, while those along the conrotatory
pathway have lower. Therefore, we attributed the observed
induced absorption to the structural change in the disrotatory
pathway, which is consistent with the prediction by the W-H
rules. The observed dynamics show that the CHD ring starts
to open approximately 340 fs later upon photoexcitation.
This agrees with the observations by time-resolved photoelectron and high-harmonic spectroscopies [2, 3].
References[1] T. Sekikawa et al., Phys. Chem. Chem. Phys. 25, 8497 (2023).
[2] R. Iikubo et al., Faraday Discuss. 194, 147 (2016).

[3] K. Kaneshima et al., Opt. Express 26, 31030 (2018).

Authors
T. Sekikawaa, N. Saito, Y. Kurimotoa, N. Ishiib, T. Mizuno, T. Kanai, J.
Itatani, K. Saitaa, and T. Taketsugua
aHokkaido University
bNational Institute for Quantum Science and Technolgy

Fig. 1. Two ring-opening pathways of 1,3-cyclohexadiene (CHD)
molecules

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31

Testing Electron-phonon Couplingfor Superconductivity
in Kagome Metal CsV3Sb5
Okazaki and Kondo Groups
In crystalline materials, electron-phonon coupling(EPC) is a ubiquitous many-body interaction that drives
conventional Bardeen-Cooper-Schrieffer superconductivity.
Recently, in a new kagome metal CsV 3Sb5, superconductivity that possibly intertwines with time-reversal andspatial symmetry-breaking orders is observed [see phase
diagram in Fig. 1a]. Density functional theory (DFT) calculation [1] predicted a weak EPC strength, λ, supporting an
unconventional pairing mechanism in CsV3Sb5. However,experimental determination of λ is still missing, hinderinga microscopic understanding of the intertwined groundstate of CsV3Sb5. In this study, using 7-eV laser-based
angle-resolved photoemission spectroscopy (ARPES) andEliashberg function analysis, we experimentally extract theorbital- and momentum-dependent λ by determining the
EPC-induced kinks in the electronic band structure.
We first present the Fermi surface (FS) topologyof CsV3Sb5 in Fig. 1b. In agreement with DFT study
and previous ARPES studies [1, 2], the Sb 5p-band
forms a circular FS, marked as α, at the BZ center andthe V 3d-bands yield hexagonal and triangular FSs,
marked as β and δ in Fig. 1b, respectively. Figure 1cshows a typical ARPES intensity plot of the α bandcorresponding to the black cut shown in Fig. 1b. By
fitting momentum distribution curves (MDCs) with a
Lorentzian function as the yellow and black curves shownin Fig. 1c, the band dispersion ω(k) is extracted as the
red curve in Fig. 1c and the single-particle self-energy,Σ(ω = E − EF), is quantitively extracted in Fig. 1d. At EB ~32 meV, a peak in the real part ReΣ(ω) and a step jump in
the imaginary part ImΣ(ω) prove a strong coupling between
electrons and bosonic modes [3], which are manifested asa kink in the band structure. As the kink is persistent above
the CDW transition temperature and any magnetic orders areabsent, we attribute it to EPC.
Next, we study the orbital-dependence of EPC bycomparing the kinks on the α and β bands. As in Fig. 1e,ReΣ(ω) of the β band which is derived from V 3d orbitals
shows a peak near EB ~ 12 meV, suggesting a strong

Fig. 1. Orbital and momentum dependence of EPC in CsV3Sb5 kagome
superconductor. (a) Phase diagram and crystal structure (inset). (b)Fermi surface mapping with ARPES intensity integrated within EF ±5 meV. (c) ARPES intensity plot for a black cut in (b). (d) Extracted
self-energy from the ARPES intensity plot shown in (c). (e) Real-partself-energy for the α and β bands along the Γ-K direction. (f) Extracted
Eliashberg function for the α and β bands by fitting ReΣ(ω) in (e). (g)EPC strength λdev at different momenta on the α and β Fermi surfaces.

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Fig. 2. Orbital and energy selective enhancement of EPC in 7%-Nb
doped CsV3Sb5. (a) Temperature dependence of magnetic susceptibility. Both zero-field cooling (ZFC) and field cooling (FC) curves
are presented. (b) ARPES intensity plots of the α and β bands alongthe Γ-K direction. (c) Extracted band dispersions. (d) Extracted realpart self-energy for the α (top panel) and β (bottom panel) bands.
Colored shadows are the corresponding ReΣ(ω) for pristine CsV3Sb5.
The dashed lines in bottom panel represent the slope of ReΣ(ω) at EF.
(e) Extracted Eliashberg function. (f) EPC strength estimated from the
Eliahsberg function and plotted as a function of Tc.

d-electron-phonon coupling near 12 meV. In contrast,ReΣ(ω) of the α band only shows a broad shoulder. Througha fit to the extracted ReΣ(ω) following the maximum energy
method [3], we extract the Eliashberg function, α2F(ω).
The extracted α2F(ω) for the α and β bands are plotted inFig. 1f. The orbital dependence of the EPC is mirrored in
the different shapes of α2F(ω), where phonon modes near
32 meV are accounted for 70% of the total EPC strength
on the α band, λp, but less than 50% for the EPC strength
on the β band, λd. Interestingly, due to the spectral weight
redistribution in α2F(ω) [shaded area in Fig. 1f], λp and λd
calculated by 2dω are similar with λp,d ~0.45 ± 0.05. Theoretically, λ can approximately be derived
from a simpler approach following λdev = ∂ReΣ(ω)∂ω|ω = EF
≅ λ , when T is far lower than the Debye temperature. At
T = 6 K, this method yields λdev ~ 0.6 ± 0.1. By scanning
the kinks along with the FSs, the extracted λdev(k) for the
α and β bands of two independent samples are summarized
in Fig. 1g, which shows a nearly isotropic behavior within
experimental uncertainties.
The orbital- and momentum-dependent results
demonstrate that λ in CsV3Sb5 falls in the intermediate rangeof 0.45 – 0.6, which is about 2 times larger than the previous
DFT predicted λDFT ~ 0.25 [1]. Using McMillan’s formulaand taking the lower and upper limits of the experimentallyestimated λ and the logarithmic mean phonon frequency~17.1 meV obtained by 2/λdω, we derive Tc
in a range from 0.8 K to 3 K. The upper limit is comparable
to the experimentally determined Tc in CsV3Sb5 (Fig. 2a).
As Tc of CsV3Sb5 can be increased with chemical
substitutions or external pressure (Fig. 1a). We thus
continue to examine the EPC strength in 7% Nb-doped
Cs(V0.93Nb0.07)3Sb5 with Tc ~ 4.4 K. Electronic kinks areobserved on both the α and β bands as shown in Fig. 2b
for the ARPES intensity plots and Fig. 2c for the extracted
band dispersions. Figure 2d shows the extracted ReΣ(ω)
on the α and β bands of Cs(V0.93Nb0.07)3Sb5. Remarkably,
we observe that while ReΣ(ω) on the α band is similar inCs(V0.93Nb0.07)3Sb5 and CsV3Sb5, on the β band, it showsa strong enhancement in the Nb-doped sample, especiallynear EB ~ 10 meV. Based on the extracted α2F(ω), shown inFig. 2e, we find that λd ~ 0.75 ± 0.05 is enhanced by about
50% in Cs(V0.93Nb0.07)3Sb5 (Fig. 2f). Importantly, theenhanced λd is expected to elevate Tc up to 4.5 K, whichis comparable to the experimental value of 4.4 K. Such
synchronous enhancements of λd and Tc may indicate that theV 3d-electron–phonon couplings are the main driver of thesuperconductivity in CsV3Sb5.
In summary, by investigating the electronic kinks, we
determined the intermediate EPC that is twice larger than the
DFT calculation in the kagome superconductors CsV3Sb5
and Cs(V0.93Nb0.07)3Sb5. Our results provide an importantclue to understand the pairing mechanism in CsV3Sb5. The
orbital and momentum dependence of the electronic kinks
and their strengthening with the promoted Tc prove that the
EPC in CsV3Sb5 is strong enough to support Tc comparable
to the experiment value and hence cannot be excluded as apossible pairing mechanism.
References[1] H. Tan et al., Phys. Rev. Lett. 127, 046401 (2021).
[2] B. Ortiz et al., Phys. Rev. Lett. 125, 247002 (2020).

[3] Y. Zhong et al., Nat. Commun. 14, 1945 (2023).

Authors
Y. Zhong, S. Lia, H. Liub, Y. Dong, K. Aido, Y. Arai, H. Lia, W. Zhangc,
Y. Shib, Z. Wangd, S. Shin, H. N. Leea, H. Miaoa, T. Kondo, and K.
OkazakiaOak Ridge National LaboratorybChinese Academy of Sciences
cSophia University
dBoston College

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33

Joint Research Highlights
Anomalous Electromagnetic Responsein the Spin-Triplet Superconductor UTe2
Unconventional superconductivity with a spin-triplet
pairing state has attracted considerable interest because of
its unusual nontrivial superconducting order parameters andmagnetic response, which are quite different from thoseof conventional Bardeen-Cooper-Schrieffer superconductors. In particular, the spin-triplet pairing state protected by
a topological invariant provides a good opportunity to seek
exotic quasiparticles such as Majorana fermions. The recent
discovery of unconventional superconductivity in UTe2 hasprovided a new opportunity in the research of spin-triplet
pairing states in solid state physics [1]. One of the mostimportant challenges for studying the superconducting stateof UTe2 is to clarify its thermodynamic behavior and its
magnetic response.
In this study [2], to further understand the spin-triplet
superconductivity in UTe2 from a thermodynamic point ofview, we investigate the magnetic field and the temperaturedependence of dc magnetization, heat capacity down to
80 mK in magnetic fields up to 14 T. Our high-resolution
magnetization measurements done by the Faraday magnetometer for H || a (the magnetic easy axis, Fig. 1(a) and (c))
and for H || b (hard axis, Fig. 1(b) and (d)) reveal multiple

Fig. 1. (a,b) Magnetization curves M(H) of UTe2 in H || a (a) and in H ||b (b). (c,d) The differential of magnetization curves dM/dH in H || a (c)and in H || b (d). The dashed arrows indicate the field sweep direction.

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ISSP Activity Report 2022

Fig. 2. Temperature dependence of magnetization M(T ) at different
magnetic fields applied along the b axis of UTe2 sample #1 (left) and #2(right). The solid and the open symbols show the data obtained in thewarming up process after zero-field cooling and that obtained in subsequent cooling process, respectively.

anomalies (Ha**, Ha*, and Hb*) in the field dependence of themagnetization M(H) below the upper critical field (Hc2).
These anomalies are also observed in our ac susceptibility
measurements done down to 30 mK [2].
We further find the temperature dependence of themagnetization, M(T ), is changed at the anomaly. Figure 2
shows M(T ) observed in two different crystals at different
magnetic fields applied along the b axis. As shown in Fig. 2,
the difference between zero-field cooling and field-coolingprocesses in the superconducting state below Hb* becomes
smaller as approaching Hb* and then larger with strong
irreversibility above Hb*.
These anomalies observed both in M(H ) and M(T ) in
the superconducting phase are attributed to strong pinningeffects on vortices in the spin-triplet superconducting stateof UTe2. In addition, we find a broad steplike anomaly justabove Hc2 for the magnetic easy axis (H || a). Given that thisanomaly does not depend on the temperature and is observed
above the superconducting transition temperature, wesuggest that this is caused by the Lifshitz transition of thiscompound.
The anomalous vortex states in UTe2 suggested by ourmagnetization measurements are also consistent with recent
NMR measurements [3] showing gradual decrease of the
NMR Knight shift and shoulder-like anomalies in the NMR
spectra. These anomalies observed for 6–10 T indicate thepresence of inhomogeneous internal fields, which could
be brought by a gradual change of the d-vector of the spintriplet state in vortices. We suggest that depinning of thed-vector above Hb* that is pinned to d || H at lower fields
might be related to these anomalies observed in our magnetization and the NMR measurements.

References[1] D. Aoki, K. Ishida, and J. Flouquet, J. Phys. Soc. Jpn. 88, 022001(2019).
[2] Y. Shimizu, S. Kittaka, Y. Kono, T. Sakakibara, K. Machida, A.
Nakamura, D. Li, Y. Homma, Y. J. Sato, A. Miyake, M. Yamashita, andD. Aoki, Phys. Rev. B 106, 214525 (2022).
[3] G. Nakamine, K. Kinjo, S. Kitagawa, K. Ishida, Y. Tokunaga, H.
Sakai, S. Kambe, A. Nakamura, Y. Shimizu, Y. Homma, D. X. Li, F.
Honda, and D. Aoki, J. Phys. Soc. Jpn. 90, 064709 (2021).
Authors
Y. Shimizua, S. Kittakab, Y. Konob, T. Sakakibara, K. Machidac, A.
Nakamuraa, D. Lia, Y. Hommaa, Y. J. Satoa, A. Miyake, M. Yamashita,
and Dai Aokia
aInstitute for Materials Research (IMR), Tohoku University
bChuo University
cRitsumeikan University
PI of Joint-use project: Y. Shimizu
Host lab: Yamashita Group

Theory of Energy Splittingof Chiral Phonons
Chirality is a property manifesting that the system’s
structure cannot overlap with its mirror image by using any
combination of translation and rotation alone, and chiralmaterials exhibit many interesting cross correlations intheir electromagnetic and/or thermal properties. This is dueto the property that polar-vector inputs can induce axialvector outputs and vice versa in those systems in addition
to ordinary responses, and this cross-correlated response isgoverned by a “order parameter” represented by an electric
toroidal multipole of some rank [1]. Many of the precedingstudies on the chiral systems have focused on their electronic
properties, since the cross correlated electromagnetic
responses are mainly governed by those degrees of freedom.
We have conducted a project to theoretically investigate
the effects of chiral structure on phonon properties withmainly targeting tellurium and its related systems [2]. It
has been known that these systems have a special quantum
number related to their chirality, and it is crystal angularmomentum (CAM) m. The main issue is how to characterize
an energy splitting of chiral phonons with different CAM
values (m = ±1). Chiral phonons have an elliptic polarizationof atomic displacement that rotates clockwise or anticlockwise depending on the sign of CAM m.
For studying this problem, we have first performed amodel building within the harmonic approximation for thelattice deformation energy and constructed a related dynamical matrix, the eigenvalues of which determine phonon

Fig. 1. (a) Structure of tellurium-like lattice. (b) Phonon energy dispersion in tellurium-like lattice for wave vector k = (0,0,kz). m is the valueof CAM. (Taken from Ref.[2]).

energies. We have found an important constraint for the
dynamical matrix that guarantees the stability of the atomic
equilibrium positions in the given chiral structure. Taking
account of this constraint, we have shown that the soundvelocity of chiral phonons is identical independent of thesign of CAM m, and this disproves some precedent discussions expecting different velocities. Energy splitting Δω
between the m = ±1 CAM modes is remarkable for opticalphonons, and it is linear in the phonon momentum kz along
the chiral axis as Δω = Γ kz m around kz = 0. We have derived
a simple formula for the coefficient Γ of this linear splitting
represented in terms of microscopic stiffness constants in the
dynamical matrix. This is a pseudo-scalar and corresponds
to an electric toroidal monopole of the system.
In order to check this and further study the effects ofchiral structure on phonon energy dispersion, we have also
proposed a lattice model for which one can control its latticechirality continuously. Its one limit is a set of three decoupled chiral tellurium-like lattices, while the other limit is a
non-chiral coupled system with mirror symmetry. We haveconfirmed the above findings for the chiral system and foundthat the chirality-related energy splitting of optical phonons
continuously vanish as we control the system towards the
non-chiral limit. This type of energy splitting between two
optical phonon modes had been recently observed by Raman
scattering experiment, and the assignment of CAM quantum
number was simultaneously performed to those two modes
using the polarization selection rule [3], which is consistent
with the theoretical predictions. We are planning to continue
the study on chiral phonons and clarify other interesting
properties related to several galvano-electric and galvanomagnetic responses.
References[1] S. Hayami, M. Yatsuhiro, Y. Yanagi, and H. Kusunose, Phys. Rev. B
98, 165110 (2018).
[2] H. Tsunetsugu and H. Kusunose, J. Phys. Soc. Jpn. 92, 023601(2023).
[3] K. Ishito et al., Nat. Phys. 19, 35 (2023).
Authors
H. Tsunetsugu and H. Kusunosea
aMeiji University
PI of Joint-use project: H. Kusunose
Host lab: Tsunetsugu Group

Mechanical Conformation Control
of Cyclized Binaphthyl
at the Air–Water Interface
Biological activity is maintained by various molecularmachines working in the body. The complex structure ofmolecular machines makes it difficult to elucidate their
behavior. Molecular machines function through a combination of various molecular conformation changes. Detailed
analysis of simple molecular conformation changes is
expected to provide a deeper understanding of the operating
mechanisms of complex molecular machines. The air-waterinterface is a suitable field for controlling molecularmachines because mechanical compression can be appliedwith the help of movable barriers of the Langmuir–Blodgett(LB) system, comparable to those that can change theconformation of proteins. In addition, a lipid matrix, which
is a medium analogous to biological membranes, can beprepared at the air-water interface.

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35

Molecular conformations can be identified using several
spectroscopic methods. We have confirmed the conformational change of binaphthyl derivatives at the air-water interface. The circular dichroism (CD) spectra can be obtained forthese molecules at low concentrations and the spectra sensitively reflect conformational changes [1, 2]. In this work,
we have controlled the molecular conformations of monobinaphthyldurene (MBD) in a lipid matrix similar to biologicalsystems [3].
Figure 1 shows the chemical structure of MBD andthree conformers of 1-MBD, 2-MBD, and flat-MBD,
which is indicated by density functional theory (DFT)
calculations, having different dihedral angles of φ between
the two naphthyl moieties. The conformer 2-MBD is
2.8 kcal mol–1 higher in energy than the more stable 1-MBD,
while flat-MBD is not favored energetically. DFT calculations also indicate that 2-MBD has a larger dihedral angle
than 1-MBD, which causes the CD peak of 2-MBD to shift
to a longer wavelength.
MBD was mixed with linear stearic acid (SA) or unsaturated oleic acid (OA) as matrices and then spread at the air–water interface. The mechanical properties of the mixed
monolayers with MBD were characterized by surfacepressure–molecular area (π-A) isotherms. The monolayers
were transferred onto quartz substrates at different surfacepressures to analyze the molecular aggregations and conformations by using CD spectra and Fourier transform infrared
reflection absorption spectroscopy (FT-IR-RAS), atomic
force microscopy (AFM). It suggested that MBD mixes more
effectively with OA than with SA and dissolves in the lipid
matrices upon mechanical compression.
The π–A isotherms suggest high miscibility of MBD
with OA. It was also supported by FT-IR-RAS and AFM.
The CD peak of the mixed monolayer with SA did notchange with surface pressure. On the other hand, the mixed
monolayer with OA shifted to longer wavelength withincreasing surface pressure. Thus, the conformation of MBD
changes from 1-MBD to 2-MBD in the mixed monolayer of

OA; in contrast, 1-MBD is stable in SA. The higher-energy
conformer 2-MBD is stabilized by the dissolution in thehighly miscible lipids of OA.
As summarized in Figure 2, MBD confirmations could becontrolled from 1-MBD to 2-MBD by mechanical stimulus
in highly miscible lipids of OA. In contrast, the most stable
1-MBD conformation could not be transformed during
mechanical compression in poorly miscible lipids of SA. It
was found that different behaviors of molecular machines
showed in their different local environments.
References[1] D. Ishikawa, T. Mori, Y. Yonamine, W. Nakanishi, D. L. Cheung, J.
P. Hill, and K. Ariga, Angew. Chem. Int. Ed. 54, 8988 (2015).
[2] M. Ishii, T. Mori, W. Nakanishi, J. P. Hill, H. Sakai, and K. Ariga,
ACS Nano 14, 13294 (2020).
[3] M. Ishii, T. Mori, W. Nakanishi, J. P. Hill, H. Sakai, and K. Ariga,
Langmuir 38, 6481 (2022).
Authors
M. Ishiia,b, T. Mori, W. Nakanishib, J. P. Hillb, H. Sakaia, and K. Arigab
aTokyo University of SciencebNational Institute for Materials Science
PI of Joint-use project: K. Ariga
Host lab: Lippmaa Group

Drude Weights in One-Dimensional
Systems with a Single DefectBallistic transport of a quantum system can be characterized by Drude weight, which quantifies the response of thesystem to a uniform electric field in the infinitely long timescale. The Drude weight is often discussed in terms of theKohn formula, which gives the Drude weight by the derivative of the energy eigenvalue of a finite-size system with theperiodic boundary condition in terms of the Aharonov-Bohm
flux. Recently, the Kohn formula is generalized to nonlinear
responses [1,2]. In particular, for the S = 1/2 XXZ chain,analytic expressions of the nonlinear Drude weights are
obtained utilizing the Bethe Ansatz exact solution. However,the nonlinear Drude weight determined by the Kohn formulaoften diverges in the thermodynamic limit. In order to elucidate the issue, in this work [3] we examine a simple example
of a one-dimensional tight-binding model in the presenceof a single defect at zero temperature. This problem can beformulated in terms of the scattering matrix of the defect.
While the bulk energy density and the “defect energy” areFig. 1. (a) Molecular structure of MBD having a dihedral angle φbetween two naphthyl rings of 1,1′-binaphthyl; (b) relative energies of
MBD conformers.

Fig. 2. Schematic Illustration of Aggregated States Involving MBD and
Lipid Matrices. (a) Mixed with stearic acid. 1-MBD persists during
mechanical compression; (b) mixed with oleic acid. MBD dissolves inoleic acid, accompanied by a conformational change from 1-MBD to
2-MBD.

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ISSP Activity Report 2022

Fig. 1. Second-order optical conductivity of the impurity model forsystem size L=10, 22 with the Aharonov-Bohm flux θ, as a function of
the two frequencies ω1 and ω2. Several peaks are observed near zerofrequencies.

Authors
K. Takasana, M. Oshikawa, and H. Watanabea
aUniversity of Tokyo
PI of Joint-use project: K. Takasan
Host lab: Oshikawa Group

Perfect Co2+-Based Jeff = 1/2
Kagomé Magnets

Fig. 2. Comparison between the Kohn formula(2) and the opticalconductivity integrated over a window of low frequencies I(2), forthe second-order Drude weight. While the Kohn formula depends
strongly on the Aharonov-Bohm flux θ, the integrated conductivity(almost) vanishes for the entire range of θ. The latter corresponds to thevanishing bulk Drude weight expected in the thermodynamic limit.

non-universal and independent of the Aharonov-Bohm flux,
the flux dependence appears in the O(1/L) correction, where
L is the system size, which is a universal function of thescattering matrix. This is also consistent with the Conformal
Field Theory. Using this formulation, we find that its linear
and non-linear Drude weights given by the Kohn formula (i)depend on the Aharonov-Bohm flux and (ii) diverge proportionally to a power of the system size. Since the effect of the
Aharonov-Bohm flux on the bulk transport property should
vanish in the thermodynamic limit, the dependence on the
Aharonov-Bohm flux signals that the non-linear Drude
weights thus obtained may not describe the bulk property.
We argue that the problem can be attributed to different
order of limits. The Drude weight according to the Kohn
formula indicates the response of a finite-size system to an
adiabatic insertion of the Aharonov-Bohm flux. While it isa well-defined physical quantity for a finite-size system, its
thermodynamic limit does not always describe the ballistictransport of the bulk. The pathological behaviors such as thedivergence of the nonlinear Drude weights mentioned above
are indications of the discrepancy between the bulk transport
property and the thermodynamic limit of the Kohn formula.
In order to clarify the issue, we propose to call thethermodynamic limit of the Kohn formula, namely theDrude weight defined by taking the adiabatic limit before
the thermodynamic limit as “Kohn Drude weight”. The
ballistic transport of the bulk is rather characterized by
the “bulk Drude weight” defined by taking the thermodynamic limit first before the adiabatic (zero-frequency) limit.
While the potential issue of the order of limits has beensometimes discussed within the linear response, the discrepancy between the two limits is amplified in nonlinear Drude
weights. We demonstrate that, the low-energy excitationsof O(1/L) in the finite system of size L, which are excluded
from the Kohn–Drude weight, contribute to the bulk Drude
weight. This removes the pathological behaviors, making
the bulk Drude weight finite and also independent of the
Aharonov-Bohm flux.
References[1] H. Watanabe and M. Oshikawa, Phys. Rev. B 102, 165137 (2020).
[2] H. Watanabe, Y. Liu, and M. Oshikawa, J. Stat. Phys. 181, 2050
(2020).

[3] K. Takasan, M. Oshikawa, and H. Watanabe, Phys. Rev. B 107,
075141 (2023).

Kagomé lattice antiferromagnets have attracted significant interest in condensed matter physics due to their
exotic magnetic properties, such as geometric frustration and the emergence of topologically ordered groundstates. Our research aims to contribute to understanding
the Jeff = 1/2 kagomé physics, which has not been comprehensively explored experimentally or theoretically. In
this study, we report the synthesis, crystal structure, andmagnetic properties of two cobalt-based kagomé magnets,
namely Co 3V 2O 7(OH) 2·2H 2O and BaCo 3(VO 4) 2(OH) 2.
These compounds can be considered as Co analogs of theextensively studied quantum kagomé magnets volborthite
Cu3V2O7(OH)2·2H2O and vesignieite BaCu3(VO4)2(OH)2.
The titled Co2+-based kagomé materials were synthesized
utilizing the hydrothermal technique. For a comprehensive
understanding of the specific synthesis procedures employedin this study, please refer to the associated publication [1].
As illustrated in Figure 1, the temperature-dependent
magnetic susceptibility of Co 3 V 2 O 7 (OH) 2 ·2H 2 O and
BaCo3(VO4)2(OH)2 under low magnetic fields of 10 mT
displays anomalies indicative of an antiferromagnetic transition. However, this characteristic behavior vanishes when
the applied magnetic field is elevated to 0.1 T. This observation can be corroborated by the isothermal magnetization
process at 2 K, depicted in Figure 2(a), where the antiferromagnetic ground state is suppressed by a field-induced phasetransition at considerably lower magnetic fields (75 mT for
Co3V2O7(OH)2·2H2O and 16 mT for BaCo3(VO4)2(OH)2,
respectively). Moreover, the M 2 vs. H/M plot [Figure 2(b)]reveals a curve characteristic of metamagnetism. In the highfield region beyond the metamagnetic transition field, theM 2 vs. H/M plot exhibits linearity, signifying that the orderparameter within the framework of Landau theory corresponds to the spontaneous magnetization M0 (associatedwith the value of the intercept) and exhibits a metamagnetic
feature [2].

Fig. 1. Temperature dependence of magnetic susceptibility (χ) in
Co2+-based kagomé magnets, measured under magnetic fields of 0.1 T
and 10 mT.

ISSP Activity Report 202237

field. Furthermore, the antiferromagnetic coupling becomesdestabilized by weak magnetic fields on the order of tens of
millitesla, culminating in "halfway-saturated ferromagnetism."
Our study highlights the importance of synthesizing
and characterizing new materials with kagomé lattice structures to broaden the understanding of the Jeff = 1/2 kagomé
physics. Furthermore, the Co2+ kagomé magnets presented
here serve as a platform for further investigations of theinterplay between crystal-field, superexchange, spin-orbit
coupling, and DM interactions in kagomé systems.
Fig. 2. (a) Low-field (< 0.15 T) magnetization curves (M) and theirderivatives (dM/dH) obtained at 2 K for Co2+-based kagome magnets.
A metamagnetic-like transition is discerned at μ0H = 75 mT for
Co3V2O7(OH)2·2H2O and μ0H = 16 mT for BaCo3(VO4)2(OH)2. (b)The M 2 vs. μ0H/M plot

Nevertheless, the spontaneous magnetization M 0 is
approximately half of the powder-averaged saturation
magnetization of 2 μB anticipated for Co2+ and cannot be
elucidated by simple in-plane ferromagnetism, as typicallyobserved in metamagnetic transitions. Theoretical investigations suggest that antisymmetric exchange mediated by the
Dzyaloshinsky-Moriya (DM) interaction may engender such
moments by causing a slight out-of-plane tilt of the spins[3,4]. The DM interaction prompts the spins within eachtriangle of the kagomé lattice to adopt an "umbrella" configuration [5]. If the Co2+ ion exhibits a Jeff = 1/2 effective spin,
the powder-averaged g factor is approximately 4. The angle
θ, representing the spin tilt induced by the DM interaction, isnearly equal to arctan[(g-2)/g]. Consequently, the emergent
ferromagnetic moment in Co2+ spin is approximately 45%of the saturation magnetization, which explains the magnetic
moment that emerges due to the metamagnetic transition,
constituting nearly half of the saturation field.
Based on these observations, the origin of the metamagnetic transition in Co2+ kagomé systems can be elucidated as
portrayed in Figure 3. The relatively substantial DM interaction provokes each triangular spin of the kagomé lattice toadopt a significantly tilted umbrella structure, generating aferromagnetic moment of about M0 ~ 1 μB on each kagomé
plane. The coupling between kagomé planes is characterized by weak antiferromagnetic interactions between layersof ferromagnetic moments under a feeble applied magnetic

Fig. 3. Schematic representation of the spin configuration transition in
Co2+-based kagomé magnets, wherein antiferromagnetically aligned
canted moments transform into ferromagnetically aligned ones.

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ISSP Activity Report 2022

References[1] Y. Haraguchi, T. Ohnoda, A. Matsuo, K. Kindo, and H. Aruga
Katori, Physical Review B 106, 214421 (2022).
[2] S. K. Banerjee, Phys. Lett. 12, 16 (1964).
[3] I. E. Dzyaloshinskii, J. Phys. Chem. Solids 4, 241 (1958).
[4] T. Moriya, Phys. Rev. 120, 91 (1960).
[5] M. Elhajal, B. Canals, and C. Lacroix, Phys. Rev. B 66, 014422(2002).
Authors
Y. Haraguchia, T. Ohnodaa, A. Matsuo, K. Kindo, and H. Aruga Katoria
aTokyo University of Agriculture and Technology

PI of Joint-use project: Y. Haraguchi
Host lab: Hiroi Group and Electromagnetic Measurements Section

Unconventional Superconductivity Robust
Against Impurities in a Newly Discovered
Kagome Lattice Superconductor
One of the strategies in the search for quantum
phenomena such as non-trivial magnetism and superconductivity is to focus on the symmetry of crystal structures ofmaterials. The kagome lattice consisting of corner-sharing
triangles and hexagonal holes (Fig. 1(a)) has attracted muchattention because materials with kagome lattice structures
exhibit various exotic properties, such as quantum spin
liquids, Dirac/Weyl physics, and unconventional superconductivity, driven by its geometry. In this context, thediscovery of superconductivity in AV3Sb5 (A = K, Rb, Cs)
with a perfect kagome lattice in 2020 has received significant
attention [1]. In these materials, charge density wave (CDW)

Fig. 1. (a) Crystal structure of CsV3Sb5. V-Sb1 plane viewed fromthe c-axis direction (right). Whereas the V atoms form a two-dimensional kagome network, the Sb1 atoms are located at the hexagonal
centers.(b) CDW pattern in CsV3Sb5. V and Sb1 atoms form theso-called star of David (right) and inverse star of David (left) patterns.
These patterns alternate in the interplane direction.

orders with a so-called (inverse) star-of-David pattern ofelectronic hopping have been observed above the superconducting transition temperature (Fig. 1(b)) [2]. Very interestingly, it has been reported that these CDW states break timereversal and rotational symmetries. In addition, high-pressurestudies have revealed that the CDW phase is suppressedby applying pressure, accompanied by the emergence ofa superconducting dome, indicating the close relationshipbetween the CDW and superconductivity [3,4]. Therefore,
one of the most crucial unresolved issues is identifying thesymmetry of the superconductivity that develops inside the
CDW phase. However, the mechanism of superconductivity
in AV3Sb5 and its relationship with the CDW state haveremained elusive [2].
Here, we focus on the effect of impurities on the superconducting state to elucidate the mechanism of superconductivity in AV3Sb5. Based on the Bardeen-Cooper-Schrieffer(BCS) theory, which is the standard theory of superconductivity, the conventional superconducting state arises from thepairing of two electrons induced by electron-phonon interactions. In this case, the introduction of nonmagnetic impurities
generally has little effect on the superconducting transition
temperature (Tc) and the superconducting gap structure [5].
However, it is well known that unconventional superconducting states, as observed in high-Tc cuprates and heavyfermion superconductors, are significantly suppressed bynonmagnetic impurities.
In this study, we systematically investigated the impurity
effects of CsV 3Sb 5 on the superconducting transition
temperature and the superconducting gap structure [6]. The
introduction of non-magnetic impurities into crystals wasachieved by using electron irradiation, enabling precise
control of the impurity concentration in the CsV3Sb5 singlecrystal samples. We examined the change in the superconducting transition temperature by measuring the resistivityof the impurity-controlled samples at ambient and highpressure. We also performed magnetic penetration depth
measurements, which reflect the superconducting gap structure. As a result, we found that the superconducting transition temperature of CsV3Sb5 is rapidly suppressed at a low
impurity concentration but starts to saturate at moderate
impurity concentrations (Fig. 2(a)). This behavior differsfrom those of both conventional BCS superconductors andunconventional superconductors such as high-Tc cuprates.
In addition, our magnetic penetration depth measurements

Fig. 2. (a) Suppression of the superconducting transition temperature
Tc in CsV3Sb5 as a function of pair breaking parameter (corresponding
to the amount of impurities). Red circles represent the transition
temperature under ambient pressure (0 GPa), and blue circles represent
the transition temperature at P2. (b) Changes in the superconducting
gap structure in CsV3Sb5 by impurities. The gap structure is anisotropic
before the introduction of impurities, but as the impurity concentration is increased, the gap size averages out and eventually the two gaps
become isotropic and almost the same size. This behavior is consistent
with the theoretical expectation in the bond-order fluctuation superconducting mechanism [6].

Fig 3. P-T phase diagrams of the (a) pristine, (b) 4.8, and (c) 8.6 C/cm2
irradiated samples. For clarity, Tc is doubled. The phase diagram of thepristine sample includes data from Chen et al [3]. The CDW (superconducting (SC)) phase is shaded in blue (red).

reveal that with increasing impurities, an anisotropic fullygapped state changes to an isotropic full-gap state without
showing impurity-induced Andreev bound states, which
excludes any of sign-changing symmetries (Fig. 2(b)).
Furthermore, transport measurements under pressure showthat the double superconducting dome in the pressuretemperature phase diagram survives against sufficient
impurities (Fig. 3). These results support that CsV3Sb5 is a
non-chiral, anisotropic s-wave superconductor with no signchange both at ambient and under pressure. The present
findings support a new type of unconventional superconductivity originated from bond-order fluctuations in the
CDW state of CsV3Sb5, where the gap function is non-signchanging s-wave [7].
Our present study will pave the way to understanding
the unique electronic and superconducting states in kagome
lattice materials.
References[1] B. R. Ortiz et al., Phys. Rev. Lett. 125, 247002 (2020).
[2] T. Neupert et al., Nat. Phys. 18, 137 (2022).
[3] K. Y. Chen et al., Phys. Rev. Lett. 126, 247001 (2021).
[4] R. Gupta et al., Commun. Phys. 5, 232 (2022).
[5] P. W. Anderson, J. Phys. Chem. Solids 11, 26 (1959).
[6] M. Roppongi et al., Nature Communications 14, 667 (2023).

[7] R. Tazai et al., Sci. Adv. 8, eabl4108 (2022).

Authors
M. Roppongia, K. Ishiharaa, K. Hashimotoa, and T Shibauchia, and Y.
UwatokoaThe university of Tokyo

PI of Joint-use project: K. Hashimoto
Host lab: Uwatoko Group

Heavy-Fermion Antiferromagnet
Yb4Ru7As6 with the U4Re7Si6Type Cubic Structure
Yb–T–X (T: transition metal, X: pnictogen) ternarycompounds have been studied intensively in terms of novel
phenomena in the vicinity of the magnetic quantum criticalpoint (QCP). For example, YbNi4P2 is reported to be close to
the ferromagnetic QCP, exhibiting the ferromagnetic transition (FM) at 0.17 K [1]. The field-induced non-Fermi liquidbehavior of Yb2Fe12P7 has also attracted attention [2].
To our knowledge, no ternary compound of Yb–Ru–As
has been reported. In this study, we have investigated ternaryYb–Ru–As compounds and found a compound Yb4Ru7As6,
which crystallizes in the U4Re7Si6-type cubic structure,
showing a weak ferromagnetic (FM) behavior below T0 ~4.0 K and antiferromagnetic (AFM) ordering at TN = 2.5 K
with the moderately enhanced electronic specific heat coefficient of 120 Yb-mJ/K2mol [3].

ISSP Activity Report 2022

39

Single crystals of Yb4Ru7As6 were grown by the Bi-flux
method, and obtained crystals are shown in the inset of
Fig. 1. The crystal structure of Yb4Ru7As6 is determined
to be the cubic U4Re7Si6-type structure (No.229, Im−3m)using a XtaLAB HyPix-600HE diffractometer. Note that the
local symmetry of Yb atom is similar to rare earth metals
in skutterudite. Fig. 1 shows the temperature dependenceof the electrical resistivity ρ of Yb4Ru7As6 for the current
J along the [100] direction. With decreasing temperature,ρ monotonically decreases with a shoulder-like structure
below 10 K. At low temperatures, two inflection points at
T0 ~ 4 K and TN ~ 2.5 K in ρ are observed, as shown in theinset of Fig. 1. The residual resistivity ratio is about 40,
indicating a high-quality sample.
Magnetic properties are isotropic reflecting the cubic
structure. With decreasing temperature, magnetic susceptibility M/H increases and follows the Curie–Weiss law attemperatures higher than 150 K. The estimated effective
magnetic moments are 4.28 – 4.45 μB/Yb, which is close to
the expected value of Yb3+ ionic state: 4.54 μB/Yb. Fig. 2
shows the temperature dependences of M/H for H || [100]below 10 K measured at several magnetic fields. M∕H at
5 mT shows a ferromagnetic increment in the temperature
range between 6 and 4 K, and a small peak at 2.5 K. Notethat no detectable hysteresis loop is observed in magnetization at 1.8 K, as shown in the inset of Fig. 2. With increasing
temperature, the peak temperature decreases to 2.25 K at

1.0 T and disappears above 2.0 T, meaning that the peak inM∕H corresponds to the AFM transition.
The specific heat C shows an upturn below 7.5 K and λtype sharp peak at 2.5 K, corresponding to the short-range
magnetic correlation and/or the Kondo effect, and the longrange magnetic ordering, respectively. In addition, a tiny
anomalous behavior is observed at T0~4 K, which corresponds to the temperature where the anomaly in ρ and theoccurrence of the FM behavior emerge as mentioned above.
It means that T0 can be attributed to a temperature characterizing the FM behavior. TN is shifted to lower temperatures
under magnetic fields and seems to disappear at 2.5 T. On theother hand, the tiny anomaly at T0 becomes obscure in themagnetic fields.
The characteristic temperature where the FM behavior in
M/H is observed corresponds to the beginning of the shortrange ordering as observed in the temperature dependenceof C, implying that one of the possibilities of the FM in
Yb4Ru7As6 is considered a concomitant phenomenon of the
AFM ordering with a canted magnetic moment arrangementfrom the <100> direction. The canted AFM can be realized
in the condition of magnetic interaction and magnetocrystalline anisotropy favoring the non-antiparallel arrangement ofmagnetic moments. Since there is no inversion symmetry at
the center between the nearest neighbor magnetic Yb sites,
the Dzyaloshinskii–Moriya interaction can be one of thepossible origins of FM behavior, for example. To elucidate
the origin of T0, resistivity measurements in magnetic fields
are in progress, and further experiments with microscopic
probes are needed.
References[1] C. Krellner, S. Lausberg, A. Steppke, M. Brando, L. Pedrero, H.
Pfau, S. Tencé, H. Rosner, F. Steglich, and C. Geibel, New J. Phys. 13,(2011) 103014.
[2] R.E. Baumbach, J.J. Hamlin, L. Shu, D.A. Zocco, J.R. O’Brien,
P.-C. Ho, and M.B. Maple, Phys. Rev. Lett. 105, 106403 (2010).
[3] Y. Hirose, K. Arakawa, Y. Kato, Y. Uwatoko, H. Ma, J. Gouchi, F.
Honda, and R. Settai, J. Magn. Magn. Mater. 556, 169327 (2022).
Authors
Y. Hirosea, K. Arakawaa, Y. Katoa, Y. Uwatoko, H. Ma, J. Gouchi, andF. Hondab, R. Settaia
aNiigata University
bKyushu University

Fig. 1. Temperature dependence of ρ of Yb4Ru7As6. The magnificationof the low temperature part and photograph of single crystals are shownin inset.

PI of Joint-use project: Y. Hirose
Host lab: Uwatoko Group

Structural Instability and Electronic
Properties of CeCoSi under Pressure

Fig. 2. M/H for H || [100] below 10 K at several magnetic fields. Inset
shows the magnetization curve for H || [100] at 1.8 K in low magnetic
fields.

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ISSP Activity Report 2022

We have clarified structural and electronic properties under pressure at low temperatures on CeCoSi, which
has been attracted attention for its novel long-range order.
CeCoSi crystallizes into the tetragonal crystal structure(No. 129, P4/nmm), which lacks local inversion symmetryat Ce site. CeCoSi exhibits a long-range ordering below
T0 ~ 12 K at ambient pressure, which is proposed to be
odd-parity multipole orderings. The T0 strongly enhanceswith increasing pressure and reaches 37 K at 1.7 GPa,followed by a rapid suppression. The phase below T0 isphase II and the phase II disappears above 2.2 GPa. CeCoSi
also undergoes structural transition at Ps ~ 4.9 GPa at 300 K
and becomes phase IV [1]. The rapid change of T0, followedby the emergence of phase IV indicates that Ce-4f electronic
state significantly altered under pressure. In order to reveal

References[1] Y. Kawamura et al., J. Phys. Soc. Jpn. 89, 054702 (2020).
[2] Y. Kawamura et al., J. Phys. Soc. Jpn. 91, 064714 (2022).
Authors
Y. Kawamuraa, K. Ikedaa, J. Hayashia, K. Takedaa, C. Sekinea, T.
Matsumurab, J. Gouchi, Y. Uwatoko, T. Tomita, H. Takahashic, and H.
TanidadaMuroran Institute of Technology
bHiroshima University
cNihon University
dToyama Prefectural University
PI of Joint-use project: Y. Kawamura
Host lab: Uwatoko Group

Fig. 1. Temperature Pressure phase diagram of CeCoSi. The bordering
temperature and pressure are defined from resistivity (circle) and fromXRD (triangle) measurements. The borders among phase I, II, III are in
literature.

the electronic and structural properties of CeCoSi in theabove whole temperature and pressure range and to clarify
the relationship between phase II and IV, electrical resistivityof CeCoSi in the pressure range of 0 ~ 8 GPa and in thetemperature range of 2.5 ~ 300 K and X-ray diffraction in
0 ~ 6 GPa and in 6 ~ 300 K have been performed.
CeCoSi single crystals were grown with a Ce/Co eutectic
flux method. The electrical resistivity on CeCoSi has been
performed by cubic anvil pressure system with a standard
four terminal method. X-ray diffraction (XRD) on powdered
CeCoSi has been performed with GM refrigerator incorporated with diamond anvil pressure cell [2].
Figure 1 shows the phase diagram depicted based on
the results of electrical resistivity and XRD under pressure.
The anomaly of electrical resistivity is observed as drop of
resistivity by the temperature or pressure, whereas additional
peaks and peak splittings are observed in the XRD pattern.
This study reveals that the boundary of phase IV and phase I
is not directly connected to phase II or phase III.
The temperature dependence of resistivity exhibits a peak
due to the Kondo scattering of the conduction electrons. The
temperature of this peak rapidly increases with increasingpressure, which corresponds the rapid enhancement ofKondo temperature under pressure. Although CeCoSi isreported as localized electronic state at ambient pressure, theresults of resistivity suggest that CeCoSi becomes itinerant
electronic state around 2 GPa. XRD indicates that the ratioof lattice parameters c/a of CeCoSi linearly decreases withpressure up to ~ 4 GPa, which is just below Ps. In contrast,
c/a of LaCoSi and PrCoSi decreases linearly below 2 GPabut they level off above 2 GPa. These results suggest that thevalence of Ce on CeCoSi gradually increases from 3+ above
2 GPa. Also, the resistivity shows a drop to exhibit a metallic
temperature dependence when crossing the phase IV.
These results strongly suggest that CeCoSi is localized character at ambient pressure and it gradually becomesitinerant character around 2 GPa and the valence of Ce
gradually changes above 2 GPa. In addition, the Ce-4f
electronic states changes drastically when crossing theboundary of phase I and IV, implying the valence changeby the structural transition. Although phase II and IV is notdirectly influenced to each other, our results strongly suggestthat both the rapid change of T0 and emergence of phase IV
can be ascribed to the valence instability of Ce-4f electron.

Sub-Micron Particle Size Effects on
Metastable Phases for a Photoswitchable
Co-Fe Prussian Blue Analogue
The K0.3Co[Fe(CN)6]0.77·nH2O compound undergoesa charge transfer coupled spin transition (CTCST), where
spin configurations change between a paramagnetic CoII
(S = 3/2)-FeIII (S = 1/2) high temperature (HT) state and adiamagnetic CoIII (S = 0) -FeII (S = 0) low temperature (LT)state. The compound having average particle size of 500 nm
exhibits a unique intermediate (IM) phase that depend on thecooling rate. The IM phase corresponds to a mixture of IM-A
(HT+LT fraction mixture) and IM-B (LT state), which have
~50 nm and ~200 nm coherent domain sizes, receptivity[1]. (Fig. 1) Moreover, several hidden metastable HT states

Fig. 1. Magnetic susceptibility curves of K0.3Co[Fe(CN)6]0.77· nH2O
for (a) 500 nm and (b) 135 nm particles. The thermally accessed
Quench (Q) phase and Low-temperature (LT) phase are depicted as red
and blue curves, respectively. The thermal procedure to reach the LT
phase is indicated by dotted arrow. The IM phase is obtained by slow
cooling (at 1 K/min). Differences in the thermal response as a functionof particle size are observed in the hysteresis, becoming narrower withdecreasing particle size. Insets: TEM images of the particles showing
their clear cubic shapes.

ISSP Activity Report 2022

41emerge as a function of thermal and photo stimuli in thecompound, namely: (1) a quench (Q) state generated fromthe HT state by flash cooling, (2) a LTPX state obtained byphotoexcitation from the LT state derived by thermal relaxation from the Q state, and (3) an IMPX state accessed byphoto-irradiation from the IM state [1, 2]. (Fig. 2(a))
A sample with smaller particle size 135 nm, whichwere designed on the scale of the coherent LT domains in
the IM phase of the 500 nm sample [3], was investigatedfor by means of thermal and photo controlled PXRD andcomplementary magnetic susceptibility measurements, andan unusual IM phase and metastable HT phases in 135 nm
particles of K0.3Co[Fe(CN)6]0.77·nH2O were compared tothose of a similar sample with 500 nm particle size in thepaper (Fig. 2). The incomplete character of the thermallyinduced CTCST between CoII (S = 3/2)-FeIII (S = 1/2) and
CoIII (S = 0)-FeII (S = 0) pairs becomes even less complete
when the particle size is reduced from 500 nm to 135 nm.
The HT spin CoII-FeIII states become predominant and the
PXRD profiles suggest a multiphasic behavior, with a peakbroadening larger than the one observed for the 500 nm
sample. This behavior is attributed to HT domains or clusters
made of a limited number of CoII-FeIII pairs that become
constrained within the CoIII-FeII lattice at low temperature,
which compose a multitude of CoII-FeIII clusters having
different sizes and experiencing different elastic strains fromthe dominant CoIII-FeII phase. The multiple state in IM phasecan be then viewed as a response of an inhomogeneous
diluted system. In addition, the disordered character generated by CTCST in the 135 nm sample reflects to LT stateobtained by thermal relaxation from a single Q phase andphoto-excited states from IM and LT states, these metastablephases are always multiple states. (Fig. 2(b))
Determination of the linear thermal expansion coefficients (LTEC) and pressure- dependent CTCST temperatures
for the two (500 nm and 135 nm) particle sizes gave insights
on the intrinsic stretchability and external compressibility,
which were indicated that the bulk sample has higher flexibility at the CTCST, while the lattice change at the CTCST
becomes less sensitive to external circumstances upon size
reduction. We attributed these behaviors to the decrease of
the cooperative electron-phonon coupling in small particles
due to the enhancement of lattice defects which alters theelasticity of the small particles. The weak character of theelastic energy barriers produced during photoexcitation,
combined with the disorder of elastic forces in the lattice,
prevents the complete photoexcitation and the collective
lattice change in the 135 nm sample. As a result, in theK 0.3Co[Fe(CN) 6] 0.77·nH 2O compound, photo-excitation
under common values of power density does not change
from the multiphasic IM state and/or LT state to a single
metastable HT phase, through sub-micron scale particle size
reduction [4].
References[1] C. Chong, M. Itoi, K. Boukheddaden, E. Codjovi, A. Rotaru, F.
Varret, F. A. Frye, D. R. Talham, I. Maurin, D. Chernyshov, and M.
Castro, Phys. Rev. B. 84, 144102 (2011).
[2] M. Itoi, I. Maurin, F. Varret, F. A. Fry, D. R. Talham, D.
Chernyshov, and K. Boukheddaden, Phys. Rev. B. 88, 094104 (2013).
[3] M. J. Andrus, Y. M. Calm, E. S. Knowles, M. F. Dumont, K. A.
Abboud, M. W. Meisel, and D. R. Talham, Polyhedron 64, 289 (2013).
[4] M. Itoi, I. Maurin, K. Boukheddaden, M. J. Andrus, D. R. Talham,
E. Elkaim, and Y. Uwatoko, J. Appl. Phys. 131, 085110 (2022)
Authors
M. Itoia, I. Maurinb,c, K. Boukheddadend, M. J. Andruse, D. R.
Talhame, E. Elkaimf, and Y. Uwatoko
aNihon University School of Medicine
bEcole Polytechnique
cInstitut NEEL
dUniversité de Versailles-Saint-Quentin
eUniversity of Florida
fSynchrotron SOLEIL

PI of Joint-use project: M. Itoi
Host lab: Uwatoko Group

Conformation of Ultra-Long Chain
Fatty Acid in Lipid Bilayer

Fig. 2. Thermal decay of the lattice parameter a for photo-excited states
IMPX (filled pentagons) and LTPX (filled circles) produced from IM
and LT states, at 90 K for the 500 nm sample and at 100 K for the
135 nm sample. (a) Data related to the 500 nm sample extracted by
the Le Bail method. The original IM state and LT state, which are thestarting phases before 690 nm light irradiations, are indicated by thedotted and dot-dash lines, respectively. (b) Similar plots for the 135 nm
sample extracted from (400) PXRD peaks. Inset: Expanded figures
between 100 K and 150 K for temperature dependent photo-excited
lattice parameters, IMPX-A & B (filled pentagons) and LTPX-A & B(filled circles) from the respective original states, IM-A &B (dottedlines) and LT-A & B (dot-dash lines).

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ISSP Activity Report 2022

Phospholipids are the most abundant lipids in biologicalmembranes and have a polar head group and two hydrocarbon tails (fatty acids). Phospholipids, more than 1000
molecular species, are biosynthesized by a combination ofa head group and two hydrocarbon tails. Each tail typicallycontains between 14 and 22 carbon atoms. Fatty acids
containing more than 22 carbons are called very-long-chain
fatty acids, such as docosahexaenoic acid (DHA, C22:6).
Moreover, much longer chains containing more than 32
carbons were found at the sn-1 position of phosphatidylcholine in photoreceptors, fibroblasts, and keratinocytes. Thesefatty acids are called ultra-long-chain fatty acids (ULCFAs).
It is considered that ULCFAs are stored as a precursor ofbioactive lipid mediators and derivatives of C32:6 andC34:6 are neuroprotective in retina. However, the physicochemical properties of ULCFAs and the biological roles of
ULCFAs-containing phospholipids are still unclear. In orderto clarify the physicochemical properties of ULCFAs, wehave simulated a single ULCFA in a lipid bilayer by all-atom
molecular dynamics using the ISSP supercomputer [1,2].
We found that ULCFAs have large conformational
fluctuations. Figure 1 shows the conformations of dotriacontahexaenoic acid containing phosphatidylcholine (dTSPC,
C32:6-C18:0) in membrane of distearoyl phosphatidylcholine (DSPC, C18:0-C18:0) [1]. The ultra-long chain has aturned conformation in the upper leaflet, a L-shaped conformation between the two leaflets, and an elongated conformation deeply inserting in the lower (opposite) leaflet. The
L-shaped conformation is taken most frequently. There are
no free-energy barriers among these conformations and thetransit time between turned and elongated conformations is~ 10 ns. Moreover, we revealed that ULCFAs can sense thedensity differences between the two leaflets and respond tothese changes. As the number ratio of lipids in the opposite
leaflet increases, the ratio of the elongated shape linearlydecreases. This change in ULCFA conformations reduces
the lipid-density difference between the two leaflets. We

have examined three types of phospholipids (DSPC, SDPC,
C18:0-C22:6, and SOPC, C18:0-C18:1) for host membranes
and three types of ULCFAs (dTSPC, HSPC, C26:4-C18:0,
and LSPC, C32:0-C18:0) [1,2]. HSPC is constructed bytruncating the long hydrocarbon chain of dTSPC at C26,
and LSPC is constructed by the saturation of the longhydrocarbon chain of dTSPC. In all cases, ULCFAs havethis sensing capability. Therefore, we concluded that it is aunique property of ULCFAs. This response may be essential
for the functions of ULCFAs in living cells.
Moreover, we added cholesterols to membranes [2].
The flip—flop of cholesterols is ~1 μs and is much fasterthan those of phospholipids (hours or days). The flip—flopof cholesterols can also reduce the lipid-density difference.
After the equilibration of cholesterols, the probability distribution of ULCFA conformations is back to that for no-lipiddensity-difference membranes. Thus, we consider that
ULCFAs initially respond to the density difference and, later,cholesterol removes the difference in living cells.
References[1] K. Kawaguchi, K. M. Nakagawa, S. Nakagawa, H. Shindou, H.
Nagao, and H. Noguchi, J. Chem. Phys. 153, 165101 (2020).

[2] K. Kawaguchi, H. Nagao, H. Shindou, and H. Noguchi, J. Phys.
Chem. B 126, 9316 (2022).
Authors
K. Kawaguchia and H. Noguchi
aKanazawa University

PI of Joint-use project: K. Kawaguchi
Host lab: Noguchi Group

Unified View of High-Tc Superconductivity
and Quantum Spin Liquids Revealed
by Ab initio Supercomputer Simulations

Fig. 1. Snapshots of a Ultra-Long Chain Fatty Acid, dTSPC, in bilayer
membrane. (a) Turned conformation. (b) L-shaped conformation. (c)Elongated conformation. dTSPC are represented by colored spheres.
Host lipid (DSPC) molecules are shown in gray (spheres represent thephosphate atoms). Water molecules are not shown for clarity.

Since the discovery of superconductivity in 1986 incopper oxides with quasi-two-dimensional perovskite structure, more than 35 years have already passed. However, its
mechanism has not converged to consensus in the community because of the difficulty in treating strongly correlated
electron systems, to which the cuprates belong.
Recently, numerical methods to study the strongly correlated electron systems have largely been developed [1], inwhich effective Hamiltonians derived by an ab initio framework starting from given crystal structure without resorting
to adjustable parameters are solved by accurate quantum
many-body solvers. The solutions of effective Hamiltonians
for a number of copper oxide compounds correctly reproduce d-wave superconducting ground states [2,3]. From therelation between the ab initio parameters and the obtained
superconducting order parameters, the principal component
that controls the strength of the superconductivity was found.
The results further show that the diverse materials dependence is well captured as shown in Fig. 1 for the superconducting critical temperature Tc. It was also clarified how thesuperconductivity can be enhanced in the present mechanism
beyond the existing materials.
The ab initio solution also offers insights into electron
fractionalization. It was found that an electron that is anelementary particle in vacuum is emergently splinteredin strongly correlated electron systems. Thus generated
particles are mutually tunneling quantum mechanically, inother words, hybridizing each other. The fractionalization

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43

Fig. 1. Comparison of experimentally optimal critical temperature, Tcopt(black symbols) and the scaling formula 0.16 t1FSC∞ (purple symbols)
obtained from the ab initio parameter t1 (nearest neighbor electrontransfer) and the calculated order parameter FSC∞ [3]. Calculated
results reproduce experimental trend of Tc quantitatively for carrier
doped CaCuO2, HgBa2CuO4 (Hg1201), Bi2Sr2CaCu2O8 (Bi2212), andBi2Sr2CuO6 (Bi2201) .

well accounts for spectroscopic data otherwise puzzling, by
combining experimental and computational results with thehelp of machine learning in the analyses of angle resolved
photoemission and the resonant inelastic X-ray scatteringresults [4-7].
Another challenge of condensed matter physics is thenature of quantum fluids, especially, the quantum spin
liquid since the first proposal half a century ago [8]. It was
shown with the aid of supercomputers that the quantum spin
liquid phase indeed exists and the spin excitations are welldescribed by the fractionalized spinons in gapless quantum
spin liquids, where the spinon has the Dirac-type gaplessexcitation and an observable spin excitation is represented
by the two composite excitations of the spinon [9,10].
Ab initio calculations of molecular solid called dmit salts
indeed demonstrated that this picture holds and the experimental phase diagram of the dmit salts is reproduced [10] asshown in Fig. 2 and the quantum spin liquid established in atheoretical touchstone model, J1-J2 Heisenberg Hamiltonian
on the square lattice also shows essentially the same structure of the fractionalized excitation [9]. These findings weremade it possible by the progress in quantum many-bodysolver using the neural network [11].
The electron fractionalization found in the cuprate superconductors and the fractionalization of an electronic spin into
two spinons look quite different at a glance. However, theFig. 2. Ground-state phase diagram revealed by ab initio simulations (vertical plane), which shows agreement with the experimental
phase diagram (bottom plane) for molecular solid, dmit salts with fivedifferent cations [10].

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ISSP Activity Report 2022

essence of the superconducting state as well as the quantum
spin liquid lies in the way of constructing quantum mechanically entangled state, the element of which is commonly thepaired state of two electrons with further entanglement of thepairs. Indeed, the wavefunctions have a common structure of
the pair-product functions at the core. The quantum entanglement by the spin singlet constituting the quantum spin liquidand by the exciton leading to the electron fractionalization
are represented in the extended Hilbert space in a unified
fashion and the singlet and exciton take on different aspect of
the same entanglement [4].
Acknowledgements
This report is based on the collaborations with Michael
Schmid, Jean-Baptiste Morèe, Youhei Yamaji, Motoaki
Hirayama, Yusuke Nomura, Di-Jing Huang, Atsushi
Fujimori, Teppei Yoshida, Kota Ido, Takahiro Misawa, andKazuyoshi Yoshimi.
References[1] M. Imada and T. Miyake, J. Phys. Soc. Jpn. 79, 112001 (2010).
[2] J.-B. Morèe, M. Hirayama, M. T. Schmid, Y. Yamaji, and M. Imada,
Phys. Rev. B 106, 235150 (2022).
[3] M. T. Schmid, J.-B. Morèe, Y. Yamaji, and M. Imada,arXiv:2303.06672.
[4] M. Imada, J. Phys. Soc. Jpn. 90, 111009 (2021).
[5] M. Imada, J. Phys. Soc. Jpn. 90, 074702 (2021).
[6] A. Singh, H. Y. Huang, J. D. Xie, J. Okamoto, C. T. Chen, T.
Watanabe, A. Fujimori, M. Imada, D. J. Huang, Nat. Commun. 13,7906 (2022).
[7] Y. Yamaji, T. Yoshida, A. Fujimori, M. Imada, Phys. Rev. Research
3, 043099 (2021).
[8] P. Fazekas and P. W. Anderson, Phil. Mag. 30, 423 (1974).
[9] Y. Nomura and M. Imada, Phys. Rev. X 11, 031034 (2021).
[10] K. Ido, K. Yoshimi, T. Misawa, and M. Imada, npj Quantum
Mater. 7, 48 (2022).

[11] Y. Nomura, A. S. Darmawan, Y. Yamaji and M. Imada, Phys.
Rev. B 96, 205152 (2017).

Authors
M. Imadaa,b,c
a Waseda University
bSophia University
cToyota Physical and Chemical Research Institute
PI of Joint-use project: M. Imada
Host lab: Supercomputer Center

Acceleration of First-Principles Statistical
Thermodynamics Framework abICS
Using an On-Lattice Neural Network
Model and Active Learning
In 2019, ab Initio Configuration Sampling toolkit,
or abICS for short, was developed as an ISSP Software
Advancement Project for directly combining first-principles relaxation and total energy calculations with replica
exchange Monte Carlo (RXMC) sampling [1]. The motivation was that effective models such as cluster expansion,
which are used to speed up the usual Metropolis Monte Carlosampling for analyzing order/disorder in alloy systems, arelimited in describing complex many-component systems
with sufficient accuracy. Our aim at that time was to enabledirect sampling on first-principles energies by employing
highly parallel sampling methods such as RXMC in combination with massively parallel supercomputing resources. A
few years later, some of the authors found that an on-latticeneural network model overcomes many issues found inprevious effective models if sufficient training data isprovided in an active learning setting [2,3]. This led to theAuthors
S. Kasamatsua, T. Aoyama, Y. Motoyama, K. Yoshimi, and O. SuginoaYamagata University
PI of Joint-use project: S. Kasamatsu
Host lab: Supercomputer Center

Fig. 1. Overview of the active learning procedure using abICS

proposal of last year’s Software Advancement Project, which
we outline in this report.
The abICS framework developed in this project uses
Python as a glue language to piece together the necessary components (Fig. 1). It is registered on PyPI (Python
Package Index; pypi.org) and can be installed easily in mostenvironments through the command “pip install --user
abics”. A typical use case is outlined as follows:
1. Random configurations on a lattice are relaxed andtheir total energies are calculated using the firstprinciples code of choice. We support VASP, Quantum
Espresso, and OpenMX.
2. A neural network model is trained on data from step 1
to predict relaxed energies from configurations on the
non-relaxed lattice. We currently use aenet code [4] forthe neural network training.
3. RXMC or population annealing MC (PAMC) calculation is performed using the neural network model fromstep 2. Two sampling modes are available: canonicalsampling with a fixed number of atoms or grand canonical sampling which allows for changes in the composition. For the neural network evaluation, we provide afile IO-based interface to aenet, and we also provide aninterface to aenet-lammps [5] python interface which
does not rely on file IO and is thus usually faster.
4. A subset of samples from step 3 are relaxed and their
total energies are calculated using first-principles
calculation. If the results deviate considerably fromthe neural network prediction, the data is added to thetraining data set and the procedure is repeated fromstep 2.
The overall procedure is controlled by an input file in
TOML format, which is an easy-to-read software configuration format that is being used in many projects [6]. The
parameters for the first-principles calculations and neuralnetwork training/evaluation are controlled by separate files
following formats of the specified solver.
We believe that abICS will be a game-changer inmodeling order/disorder in many-component crystalline
systems as we have already demonstrated for partially
hydrated Sc-doped BaZrO 3 [3]. Please do not refrainfrom contacting us if you find any difficulties in using or
extending this software.
References[1] S. Kasamatsu and O. Sugino, J. Phys.: Condens. Matter 31, 085901(2019).
[2] S. Kasamatsu et al., J. Chem. Phys. 157, 104114 (2022).
[3] K. Hoshino, S. Kasamatsu et al., Chem. Mater. 35, 2289 (2023).
[4] N. Artrith et al., Phys. Rev. B 96, 014112 (2017).
[5] M. S. Chen et al., J. Chem. Phys. 155, 074801 (2021).
[6] https://github.com/toml-lang/toml

Topological Hall Effect Inducedby Non-Coplanar Magnetic Structure
in van der Waals Magnets
Antiferromagnets with broken time-reversal symmetry(TRS) have been attracting remarkable attention since thediscovery of the large Hall effect in the kagome antiferromagnet Mn3Sn [1], which exhibits a coplanar 120-degreespin order on the kagome lattice. From the viewpoint ofsymmetry, this magnetic structure is compatible with thein-plane ferromagnetic order, and thus accounts for the large
Hall effect despite the extremely small net magnetization.
These properties would be applicable for novel information
storage/processing devices with small stray fields and fasterspin dynamics. Thus far, the number of this class of materials
has been limited, and further exploration of TRS-broken
antiferromagnets is highly demanded.
In the present study, we focus on the van der Waals
materials composed of triangular lattice layers of magnetic
ions, CoTa3S6 (CTS) and CoNb3S6 (CNS), which have been
recently reported to show large Hall effect in the antiferromagnetic ordered phases [2,3]. However, the magnetic structures of these compounds were not investigated in detail.
We thus performed polarized neutron scattering experimentson these compounds at the POlarized Neutron Triple-Axis
spectrometer (PONTA) installed in the 5G beamline of theJapan Research Rector 3 (JRR-3), in order to elucidate themagnetic structure relevant to the large Hall effect [4].
Single crystals of CTS and CNS were synthesized by thechemical vapor transport method. As for CTS, we observed
the large spontaneous Hall effect in zero magnetic field,
as shown in Fig. 1(a), as if the conduction electrons were
subject to a magnetic field along the c axis of the crystal.
We mounted a single crystal of CTS on a standard 4He
closed-cycle refrigerator with the (H,K,0) scattering plane,
and measured magnetic reflections with polarized neutrons.
Figures 2(a) and 2(b) show the scattering profiles of themagnetic Bragg peaks at (1/2,0,0) and (1/2,1/2,0) at thelowest temperature. The incident neutrons were polarizedalong the c axis of the crystal, that was perpendicular to thescattering plane. By using a spin flipper and an analyzer ofa magnetic Heusler-alloy crystal, we measured the intensities of the scattered neutrons in the non-spin-flip (NSF) andspin-flip (SF) channels, which correspond to the Fouriertransformed magnetic moments parallel to the c axis and thatperpendicular to both the c axis and the scattering vector,
respectively. We found that the reflection at (1/2, 1/2, 0)
contains both the NSF and SF signals, suggesting that thesystem has non-coplanar magnetic structure. By representation analysis, we obtained possible bases of the magnetic
structure, and found that the observed SF and NSF intensities can be reproduced by the all-in-all-out type magnetic
structure constructed by a linear combination of the possible
bases, as shown in Figs. 2(c) and 2(d). This magnetic structure breaks the time-reversal symmetry, and thus has the twodomains, each of which is interconverted to the other by thetime-reversal operation. Therefore, these two domains are

ISSP Activity Report 202245

compatible with the ferromagnetic state with up and down
magnetic moments, respectively, and exhibit the large Hall
effect with opposite signs. We also investigated the magnetic
structure of CNS in the same manner, and found that thissystem also has the all-in-all-out type non-coplanar magnetic
structure. We also performed time-of-flight neutron diffraction measurements on CTS in Material and Life-science
experimental Facility (MLF) of J-PARC, and also carried out
first-principles calculations based on the density functional
theory. Both confirmed the all-in-all-out magnetic structure.
We note here that this magnetic structure has finite scalarspin chirality, Si・(Sj×Sk), which can induce a fictitious
magnetic field acting only on the conduction electrons byadding quantum-mechanical Berry phase to their wavefunctions. The present results indicate that the scalar spinchirality mechanism can offer a promising route to realize
giant spontaneous Hall response even in compensatedantiferromagnets.
References[1] S. Nakatsuji et al., Nature 527, 215 (2015).
[2] N. J. Ghimire et al., Nature Commun. 9, 3280 (2018).
[3] P. Park et al., npg Quantum Materials 7, 42 (2022).

[4] H. Takagi et al., Nature Physics (advanced online publication)(2023).

Fig. 1. (upper panel) Temperature dependence of the Hall resistivity
and conductivity of CTS measured in zero field. (lower panel) Colormap of thethe Hall resistivity superposed on the magnetization-temperature phase diagram of CTS.

Fig. 2. [(a),(b)] Polarized neutron scattering profiles of CTS. [(c),(d)]Two domains of all-in-all-out magnetic structure.

46

ISSP Activity Report 2022

Authors
H. Takagia, R. Takagia,b,c, S. Minamia, T. Nomotoa, K. Ohishid, M.-T.
Suzukie,f, Y. Yanagie,g, M. Hirayamaa,c, N. D. Khanhc, K. Karubec,
H. Saitoa, D. Hashizumec, R. Kiyanagih, Y. Tokuraa,c, R. Aritaa,c, T.
Nakajimaa,c, and S. Sekia,b,caThe university of Tokyo
bPRESTO, Japan Science and Technology Agency (JST)cRIKEN Center for Emergent Matter Science (CEMS)
dComprehensive Research Organization for Science and Society(CROSS)
eTohoku University
fOsaka University
gToyama Prefectural University
hJ-PARC Center
PI of Joint-use project: S. Seki
Host lab: Neutron Science Laboratory

Large Anomalous Hall Effect Induced
by Field-Tunable Weyl Points
in Antiferromagnetic Degenerate
Semiconductor EuMg2Bi2
Weyl magnets, which have the topologically nontrivial
band crossing points, have recently attracted significant
attention because of the unconventional physical properties,
such as large anomalous Hall effects (AHE). The typicalmaterials have a semimetallic band structure where manybands cross the Fermi energy (EF), resulting in complicatedband structures and Fermi surfaces that hinder a simple
understanding of their Weyl physics. In this study, we reporton the field-tunable Weyl points in the degenerate antiferromagnetic semiconductor EuMg2Bi2, which has a simple
and small Fermi surface. EuMg2Bi2 has a CaAl2Si2-type
structure, which consists of the alternative stacking of the Eu
magnetic layer and the Mg2Bi2 buckled-honeycomb layer(Fig. 1(a)). The former layer exhibits the A-type antiferromagnetic (A-AFM) order below TN ~ 6.7 K at zero field.
When the field is applied along the c -axis, Eu spins startcanting toward the c-axis and are fully polarized above Bc~ 4 T at 2 K. The latter layer forms the semiconducting
band with the direct band gap at the Γ point, resulting in thesimple Fermi surface. Therefore, it is expected that, in themagnetic field, the spin-polarized band crossing points (Weylpoints) are formed while maintaining a simple band structure
due to the spin splitting caused by the exchange interaction
with local Eu spins. To reveal the impacts of the Eu magnetism on the band structure of EuMg2Bi2, we synthesized thelarge single crystal (Fig. 1(b)) and performed the various
measurements and the first-principles calculations.
Figure 1(c) shows the field dependence of the Hall resistivity ρyx at 2 K for the field along the c-axis. Although, ρyx
is almost linear with respect to field above Bc, it deviatesfrom the straight line below Bc and shows a hump structure
at approximately 2.5 T. This signals the AHE coupled withEu magnetic order. To extract the anomalous component ρ Ayx, we estimate the ordinary component ρ Nyx = RHB from thedata above Bc. We obtained the anomalous component asρ Ayx = ρyx − ρ Nyx which is roughly proportional to magnetization. At B > Bc, the anomalous Hall angle ΘAH = σ Axy ⁄σxx ,where σ Axy = ρ Ayx ⁄ (ρ 2xx + ρ2yx) and σxx = ρxx ⁄ (ρ 2xx + ρ2yx) exhibits
the nearly constant value (~ 0.07), which is comparable
to those reported for other Weyl ferromagnets Co3Sn2S2(~ 0.2 at 150 K) [2], Fe3GeTe2 (~ 0.09 at 2 K) [3], and
GdPtBi (~ 0.15 at 2.5 K) [4]. Such a large ΘAH indicatesthat EuMg2Bi2 has band crossing points near EF in theforced-ferromagnetic (f-FM) phase as a source of the BerryFig. 1. (a) The crystal structure of EuMg2Bi2. (b) The photograph ofthe single crystal of EuMg2Bi2. (c) The field dependence of ρyx and its
anomalous part ρ Ayx at 2 K. The black dotted line corresponds to theordinary part ρ Nyx obtained from the liner fit to the experimental data
above Bc. Note here that the ρ Nyx is vertically shifted to demonstrate thefitted result at the high-field region. The red curve represents the fielddependence of the magnetization M at 2 K. Insets show the magnetic
structure of Eu spins at canted-antiferromagnetic (AFM) and forcedferromagnetic (f-FM) phases. (d) Field dependence of ρxx at T = 1.4 K
up to B ~ 50 T. Triangles denote the oscillatory component. The inset
shows the oscillatory component Δρxx.

curvature.
To obtain the detailed information of the Fermi
surface, we measured the several physical properties up to~ 55 T using the nondestructive mid-pulse magnet.
Figure 1(d) shows the field dependence of the resistivity ρxx.
As denoted by black triangles, we observed clear oscillatory structure. These oscillations are periodic with respect to
1/B [see inset of Fig. 1(d)], which indicates the quantum
oscillation arising from the Landau quantization. By
Onsager’s theorem, we can estimate the cross-section SF(~ 0.352 nm-2) of the Fermi surface from the oscillation
frequency BF (~ 36 T), which allows us to determine theposition of EF in combination with the first-principles calculation shown below.
Figure 2(a) shows the calculated band structure aroundthe Γ point for A-AFM phase. The two valence bands I andII cross each other on the Γ−A line, leading to a Dirac-likepoint located far from the EF. When the field is applied along
the c-axis, both bands exhibit a spin splitting because of
the exchange interaction with the local Eu spins to form themultiple Weyl points. The position of the Weyl points shiftswith increasing the magnitude of the spin splitting. Intriguingly, in the f-FM phase, one of the Weyl points are formedin the vicinity of EF (Fig. 2(b)), which is determined to be~ 110 meV from the comparison between the experimental
and theoretical values of SF and carrier density obtained fromthe Hall coefficient [1]. To clarify the intrinsic AHE due tothe Berry curvature of the Weyl point, we calculated the EF
dependence of the anomalous Hall conductivity σ Axy in the
f-FM phase. The calculated σ Axy shows a peak near the experimental EF value where the Weyl point exists, and a goodquantitative agreement with the experimental result obtainedby the carrier-tuned samples. This strongly indicates thatthe observed large AHE in EuMg2Bi2 is due to the Berrycurvature at the Weyl point induced by the magnetic field.

Fig. 2. (a, b) Valence band structures around the Γ point near EF (lower
panels) for various magnetic states (upper panels). Red and blue colorsof band dispersions represent spin up and spin down, respectively. The
dotted lines denote the Fermi energy EF determined from the quantum
oscillation frequency BF at T = 1.4 K. (c) Anomalous Hall conductivity
σ Axy as a function of EF. The solid black curve represents the calculated
result for the f-FM phase. The solid red circle denotes the experimental
data (2 K, 9 T) for pristine EuMg2Bi2, while the open blue squares andopen green triangle denote those for the annealed crystals and In-doped
crystal, respectively.

Thus, our findings have clarified the unambiguous relationship between the emergent Weyl points and the anomalous
Hall effect in a simple band structure, providing a guiding
principle for future material design.
References[1] M. Kondo et al., Physical Review B 107, L121112 (2023).
[2] E. Liu et al., Nat. Phys. 14, 1125 (2018).
[3] K. Kim et al., Nat. Mater. 17, 794 (2018).
[4] T. Suzuki et al., Nat. Phys. 12, 1119 (2016).
Authors
M. Kondoa, M. Ochia, R. Kuriharab, A. Miyake, Y. Yamasakic, d,
M. Tokunaga, H. Nakaoe, K. Kurokia, T. Kidaf, M. Hagiwaraf, H.
Murakawaa, N. Hanasakia, and H. Sakaia
aOsaka University
bTokyo University of SciencecNIMS
dCEMS, RIKEN
eKEK
fAHMF, Osaka University
PI of Joint-use project: H. Sakai
Host lab: Tokunaga GroupHigh Upper Critical Field of 120 T and
Small Anisotropy in Highly HydrogenSubstituted SmFeAsO Epitaxial FilmAmong iron-based bulk superconductors, the highest
critical temperature (Tc) of 55 K has been recorded for the1111-type SmFeAsO. The superconductivity emerges byelectron doping through partial substitution of F− or H−
in the O2− sites. Recently, we succeeded in fabrication of
H-substituted SmFeAsO epitaxial thin films using topochemical reaction with binary dihydrides. The H-substituted
SmFeAsO films exhibit not only high Tc, but also highcritical current density (Jc), which is comparable with thoseof high Jc films of 122-type BaFe2As2 that is regarded as themost promising candidate among iron-based superconduc-

ISSP Activity Report 202247

tors for practical application. Other than Tc and Jc, the upper
critical field (μ0Hc2) and its anisotropic parameter (γ ≡ Hc2||/
Hc2⊥, where the directions of the applied external magnetic
fields are parallel (μ0H ||) and perpendicular (μ0H ⊥) to theab plane of SmFeAsO.) are also the important properties
for evaluation of superconductors and their applications. In
this study, the electronic transport properties of the highly
H-substituted SmFeAsO epitaxial film were investigated todetermine the low-temperature and high-field limits of its
μ0Hc2 (μ0Hc2(0)) and γ under extremely high magnetic fields
generated by nondestructive (60 T) and single-turn (130 T)
pulsed magnets at the ISSP.
To experimentally determine μ0Hc2(0) for μ0H || ab, we
performed radio-frequency (rf) impedance measurementwith the single-turn magnet up to 130 T at 2.2 K (Fig. 1).
The sample resistance (R) was roughly proportional to theinverse ratio of the amplitude of the reflection rf signal to theincident rf excitation with a field-independent background(Γ −1). Even though Γ −1 remained constant with the wire
resistance due to two-wire configuration between 0 and ~100T, Γ−1 steeply increased at higher fields. An enlarged view ofthe high-field region in Fig. 1(a) is shown in Fig. 1(b). Fromthe least-squares fits, clear saturation of Γ −1 was observed
above ~125 T. By taking μ0H where Γ −1 became 80% of thesaturated Γ −1 as μ0Hc2, μ0Hc2 of H-substituted SmFeAsO at
2.2 K was estimated to be 120 T for μ0H || ab. Because theexperimentally confirmed μ0Hc2 at 2.2 K should be almost
the same as its low-temperature limit μ0Hc2(0), we concluded
that μ 0H c2(0) of H-substituted SmFeAsO film reaches
120 T. This is the first experimental determination of μ0Hc2
for 1111-type SmFeAsO at the low-temperature and highfield limits, and it is the highest value among those of otheriron-based superconductors.

Fig. 1. Impedance measurement under high magnetic fields of up to 130 T
at 2.2 K. The magnetic field was generated by the single-turn magnet andapplied within the ab plane. (a) Γ −1 in the field region from 0 to 130 T. The
inset shows relationship between the crystallographic orientation and thesample configuration of the H-substituted SmFeAsO epitaxial film on a MgO
single-crystal substrate. (b) Enlarged image of (a) in the high-field region. The
constant background is indicated by a black dashed line in (a). The red andblue arrows in (b) denote the directions of the field sweep. The black dashedand solid lines in (b) are the least-squares fits of the normal-state resistance inthe up and down sweeps.

48

ISSP Activity Report 2022

Anisotropic parameter of μ0Hc2 (γ) in the H-substituted SmFeAsO
epitaxial film. (a) R–μ0H curves under μ0H of up to 60 T at 37.5 K as afunction of the angle (θ). (b) Angular dependence of μ0Hc2 at 37.5 K.
The red curve is the fit obtained by two-band analysis.

Next, to determine γ, the H-substituted SmFeAsO
epitaxial film was mounted on a rotator probe, where theangle between the field direction and the c axis of the film
was defined as θ, and μ0H was applied with the nondestructive pulsed magnet up to 60 T. Figure 2(a) shows
the R–μ0H curves at 37.5 K with different field angles θ.
With increasing θ, the jump in the R–μ0H curve graduallyshifted to the higher field side. This experiment revealed
that although there is a non-negligible angle dependence inμ0Hc2, γ seems to be very small despite the layered structureof H-substituted SmFeAsO, which consists of individual
SmO insulating and FeAs conductive layers. The θ dependence of μ0Hc2 was estimated from the θ-dependent R(Fig. 2(b)), revealing that the γ around Tc is ~2. This small γ
is comparable with those of MgB2 and 122-type BaFe2As2,
and almost half of that of F-substituted SmFeAsO (γ > 4).
The small γ value of H-substituted SmFeAsO mainly originates from realization of three-dimensional superconductivity owing to high H incorporation.
In summary, we clarified the remarkable and uniquecharacteristics in the H-substituted SmFeAsO epitaxial film
such as the high μ0Hc2(0) of 120 T and relatively isotropicγ (~2) under extremely high magnetic fields generated by
nondestructive and single-turn pulsed magnets at the ISSP
[1]. Owing to the high and nearly isotropic μ0Hc2, as wellas the high Tc and high Jc, H-substituted SmFeAsO is apromising candidate for superconducting applications, suchas the wires and tapes for cables and high-field electromagnets.
Reference[1] K. Hanzawa, J. Matsumoto, S. Iimura, Y. Kohama, H.
Hiramatsu, and H. Hosono, Phys. Rev. Mater. 6, L111801 (2022).

Authors
K. Hanzawaa, J. Matsumotoa, S. Iimuraa, b, Y. Kohama, H. Hiramatsua,and H. Hosonoa, b
aTokyo Institute of Technology
bNIMS

PI of Joint-use project: H. Hiramatsu
Host lab: Kohama Group

Time-Resolved Angle-Resolved
Photoemission Spectroscopy
on Ta2Ni0.9Co0.1Se5
Ultrafast optical response of Ta2Ni0.9Co0.1Se5 has beenstudied by means of time-resolved angle-resolved photoemission spectroscopy (tr-ARPES). The Ti:Sapphire laser
pulse with hν = 1.55 eV was used for the pump light andits higher harmonics with hν = 21.7 eV was employed forthe probe light. The temporal resolution of the tr-ARPES isabout 80 fs. Ta2Ni0.9Co0.1Se5 has a quasi one-dimensional
crystal structure (Ta chain and Ni chain run along the aaxis) and is one of the excitonic insulator (EI) candidates
where the transition temperature is reduced by Co substitution in Ta2NiSe5. Under the sufficient incident fluence(1.9 mJ cm-2), the conduction band is clearly observed above
the Fermi level and the energy gap between the conduction
and valence bands is closed at the delay time about 150 fs[1]. This observation suggests a photoinduced phase transition from the EI state to a semimetal state. The observed
band dispersions of the semimetal phase roughly agree withthe generalized gradient approximation (GGA) calculation
which fails to reproduce the band gap at the ambient condition.
In Fig. 1, the tr-ARPES spectra of the semimetal phaseare differentiated two times with respective to energy and aresmoothed [2]. In this measurement, the Fermi surfaces areobserved even before the arrival of the pump pulse (-400 fs).
kx represents a momentum along the Ta/Ni chain direction
along which the valence and the conduction bands exhibit
large dispersions. The kx dispersions appreciably depend on
ky which is a momentum perpendicular to the Ta/Ni chains.
The crosses indicate the band positions extracted from themomentum distribution curves (MDCs). The agreement
between the band positions and the band structure calculations is not perfect, but the positions of the valence andconduction bands are roughly reproduced. Most probably,
the electron-hole interaction, which is not exactly includedin GGA, is screened out by the photoexcited carriers. In thephotoinduced semimetal phase, the conduction and valencebands provide quasi one-dimensional Fermi surfaces withsimilar momentum positions suggesting a quasi one-dimensional line-node semimetal.
In most of the tr-ARPES measurements, the EI gap of
Ta2Ni0.9Co0.1Se5 remains before the pump pulse arrival andis gradually suppressed after the pump pulse excitation.
Such spectral behavior is clearly demonstrated in Fig. 2,
where the energy distribution curves (EDCs) are numerically deconvoluted and divided by Fermi-Dirac distributionfunctions in order to extract the intrinsic spectral function[3]. With the fluence of 3.00 mJcm-2 and at the delay timeof 70 fs, the valence band top does not reach the Fermi level
creating a partial gap or a pseudogap, and the transition fromthe EI state to the semimetal state is not completed. Whilethe conduction band crossing the Fermi level is observedwith the shorter delay time (down to 50-70 fs) and/or the

Fig. 1. The second derivatives of the tr-ARPES spectra with respective to energy as functions of kx for Ta2Ni0.9Co0.1Se5, which are taken
at 100 K with pump-probe delay of -400 fs (only ky = 0.00 Å−1) andabout 100 fs (ky = 0.00, 0.075, 0.15, 0.225, and 0.30 Å−1). The symbols
indicate the band positions extracted from MDCs. The solid curvesindicate calculated GGA band dispersions for Ta2NiSe5.

lower fluence (down to 0.32 mJ cm−2), the valence band
top stays well below the Fermi level up to the fluence of
1.39 mJ cm−2 even at the delay time of 150-170 fs. Only
with the highest fluence (3.00 mJ cm-2) and the delay timeof 150-170 fs, the gap (or pseudogap) at the Fermi level isclosed. Such different optical responses of the valence andconduction bands cannot be explained by the canonical EI
scenario, suggesting a vital role of electron-lattice coupling.
One can speculate that the fluctuations of the Ni-Se bond,which can be coupled to the negative charge-transfer energy
state (d9L state) of Ni (L represents a Se 4p hole), remain at
the 50-70 fs delay time and suppress the valence band shift.
Around the delay time of 150-170 fs, the lattice fluctuations

Fig. 2. EDCs (integrated in the kx range between 0.05 and -0.05 Å−1)deconvoluted and divided by the Fermi-Dirac distribution functions at
the delay time of (a) -680 fs, (b) 70 fs, and (c) 170 fs for the fluenceof 3.00 mJ cm−2. Deconvoluted EDCs at 50-70 fs for the fluence of(d) 0.32 mJ cm−2, (e) 0.85 mJ cm−2, and (f) 1.39 mJ cm−2. Deconvoluted EDCs at 150-170 fs for the fluence of (g) 0.32 mJ cm−2, (h)0.85 mJ cm−2, and (i) 1.39 mJ cm−2.

ISSP Activity Report 2022

49

are screened out due to the photoexcited holes resulting inthe semimetal phase with the substantial energy overlap
between the conduction and valence bands. Such electronlattice coupling is expected to be weak for the Ta-Se bondwhere the extended Ta 5d orbitals form the conduction band.
References[1] T. Mitsuoka, T. Suzuki, H. Takagi, N. Katayama, H. Sawa, M.
Nohara, M. Watanabe, J. Xu, Q. Ren, M. Fujisawa, T. Kanai, J. Itatani,
S. Shin, K. Okazaki, and T. Mizokawa, J. Phys. Soc. Jpn. 89, 124703(2020).
[2] T. Mitsuoka, Y. Takahashi, T. Suzuki, M. Okawa, H. Takagi, N.
Katayama, H. Sawa, M. Nohara, M. Watanabe, J. Xu, Q. Ren, M.
Fujisawa, T. Kanai, J. Itatani, K. Okazaki, S. Shin, and T. Mizokawa, J.
Phys. Soc. Jpn. 92, 023703 (2023).
[3] Y. Takahashi, T. Suzuki, M. Hattori, M. Okawa, H. Takagi, N.
Katayama, H. Sawa, M. Nohara, Y. Zhong, K. Liu, T. Kanai, J. Itatani,
S. Shin, K. Okazaki, and T. Mizokawa, J. Phys. Soc. Jpn. in press.
Authors
T. Mizokawaa, T. Mitsuokaa, Y. Takahashia, M. Hattoria, M. Okawaa, T.
Suzuki, and K. Okazaki
aWaseda University
PI of Joint-use project: T. Mizokawa
Host lab: Okazaki Group50

ISSP Activity Report 2022

ISSP Activity Report 2022

51

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
for supercomputer-aided research projects and hosts theSteering Committee, as mentioned below, that evaluates the
proposals.
The ISSP supercomputer system consists of two subsystems: System B, which was last replaced in Oct. 2020, isintended for larger total computational power and has morenodes with relatively loose connections whereas System C
is intended for higher communication speed among nodes.
System B (ohtaka) consists of 1680 CPU nodes of AMD
EPYC 7702 (64 cores) and 8 FAT nodes of Intel Xeon
Platinum 8280 (28 cores) with total theoretical performanceof 6.881 PFlops. System C was replaced in June 2022 andthe current system (kugui) consists of 128 nodes of AMD
EPYC 7763 (64 cores) and 8 ACC nodes of AMD EPYC
7763 (64 cores) NVIDIA A100 40GB for HGX with total
theoretical performance of 0.973 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 (PASUMS).” In thisproject, for enhancing the usability of the ISSP supercomputer system, we conduct several software-advancement
activities: developing new application software that runs
efficiently on the ISSP supercomputer system, adding newClass

Max Points
SystemB

Application

SystemC

functions to existing codes, help releasing private codes for
public use, creating/improving manuals for public codes, etc.
Two target programs were selected for fiscal year 2022: (1)abICS (proposal made by S. Kasamatsu (Yamagata U.)), and(2) H-wave (proposal made by A. Kobayashi (Nagoya U.)).
In addition, since 2021, we have been maintaining the datarepository service for secure storage and enhanced usabilityof results of numerical calculation.
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 2022, totally 337 projects were approved including theones under the framework of Supercomputing Consortiumfor Computational Materials Science (SCCMS), which
specially supports FUGAKU and other major projects incomputational materials science. The total points applied andapproved are listed on Table. 1 below.
The research projects are roughly classified into thefollowing three (the number of projects approved, notincluding SCCMS):First-Principles Calculation of Materials Properties (151)
Strongly Correlated Quantum Systems (25)
Cooperative Phenomena in Complex, Macroscopic
Systems (141)In all the three categories, most proposals involve bothmethodology and applications. The results of the projects arereported in 'Activity Report 2022' 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
2022, the following three invited papers are included:

Numberof
Projects

SystemB

Approved
SystemC

2.8k

SystemB

1.4k

System
C

A

100

50

any time

B

800

100

twice a year

94

65.9k

6.7k

38.6k

5.5k

C

8k

500

twice a year

176

1092.9k

47.4k

566.8k

35.7k

D

10k

500

any time

6

30.5k

0.9k

23.4k

0.8k

E

24k

1.5k

twice a year

13

273.0k

18.0k185.5k

14.4k

twice a year

0

0k

0k

0k

0k

SCCMS

20

52.3k

5.2k

52.3k

5.2k

Total

337

1517.4k

79.6k

869.4k

62.9k

S

28

Total Points
Applied

2.8k

1.4k

Table 1. Research projects approved in Academic Year 2022.
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 point for the CPU nodes of System B and System C. A FAT node of System B
and an ACC node of System C require 4 and 2 points, respectively, for 24 hours.

52

ISSP Activity Report 2022

1.

2.
3.

''Training method for refinement of machine-learninginteratomic potential and its applications'', Kohei
SHIMAMURA, Akihide KOURA, and Fuyuki
SHIMOJO (Kumamoto Univ.)''First principles calculation of copper-oxide superconductors exhibiting electron fractionalization'',Masatoshi IMADA (Waseda Univ.)''Molecular dynamics study of ultra-long chain fatty
acid in lipid bilayer'', Kazutomo KAWAGUCHI(Kanazawa Univ.) and Hiroshi NOGUCHI (ISSP)

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 (GUP) for theuniversity-owned various neutron scattering spectrometers
installed at JRR-3 (20 MW) operated by Japan Atomic
Energy Agency (JAEA) in Tokai, Ibaraki (Fig. 1). In 2003,
the Neutron Scattering Laboratory was reorganized as the
Neutron Science Labora­tory to further promote the neutronscience with use of the instruments in JRR-3. Under GUP
supported by NSL, 12 university-group-owned spectrom­eters in the JRR-3 reactor are available for a wide scopeof research on material science. The submitted proposals
were about 300 and the visiting users reached over 6000
person-day in FY2010. 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) (Fig. 2). HRC covers wide energy
transfer (100 μeV < ħω < 0.5 eV) and momentum transfer(0.03 Å-1 < Q < 30 Å-1) ranges, and therefore becomescomple­mentary to the existing inelastic spectrometers at
JRR-3. HRC has accepted general users through the J-PARC
proposal system since FY2011.
Triple axis spectrometers, HRC, a four-circle diffractometer, and a high resolu­
tion powder diffractometer are
utilized mainly for a conventional solid state physics and avariety of research fields on hard-condensed matter, whilein the field of soft-condensed matter science, researches aremostly carried out by using a small angle neutron scattering(SANS-U) and/or neutron spin echo (iNSE) instruments. The
upgraded time-of-flight (TOF) inelastic scattering spectrometer, AGNES, is available both for hard- and soft-matter

Fig. 2. Schematic view of HRC.

science. Our GUP has produced 2088 publications and 289
dissertations until April 24, 2023. Their lists for the last 10
years are given in Activity Report on Neutron Scattering
Research which is available in ISSP and NSL web pages.
Since the Great East Japan Earthquake on March 11,
2011, JRR-3 were closed for about 10 years mainly fromsafety issues. Hence, our domestic activity was only on
HRC. To keep the activity of reactor-neutron science inJapan, NSL has managed User-Program Supports forOverseas Experiments from FY2012 to FY2020. 398 people(for 297 proposals) have performed their experiments invarious foreign facilities and published 118 papers (as ofFebruary 28, 2022). The lists for this program are also available in Activity Report on Neutron Scattering Researchmentioned above.
As for international cooperative programs, NSL operates
the U.S.-Japan Coopera­tive Program on neutron scattering,
providing further research opportunities to material scientists
who utilize the neutron scattering technique for their researchinterests. In 2010, relocation of the U.S.-Japan triple-axis
spectrom­eter, CTAX, was completed, and it is now open to
Japanese users. NSL has another agreement with Australian
Centre for Neutron Scattering (ANSTO), which was the main
foreign facility for the User-Program Supports for Overseas
Experiments.
It was long-awaited news that JRR-3 restarted in
February 2021 after long shutdown and the normal GUP
came back from July 2021. During the shutdown period,
we made a lot of efforts on upgrading the instruments andneutron beam circumstances. Specific actions taken include:
the installation of focusing collimation systems, such as
focusing monochromator and focusing analyzer, and supermirror collimators. The neutron guides in the beam-hall
have also been upgraded by replacing the existing ones
with super-mirror guides. These upgrades have resulted inincrease in neutron beam flux several times. For example,
the neutron intensity of AGNES (high resolution cold
neutron spectrometer) increased seven times. The sample
environments such as cryostat and pressure cells have also
been upgraded. We had conducted 84 experiments for 155
proposals in 2021 (reactor operation: 4 cycles, 92 days) and
123 experiments for 166 proposals in 2022 (reactor operation: 7 cycles, 152 days). For these experiments, more than
40 papers, including those under review, have been obtained
as of October 14, 2022.

Fig. 1. Reactor hall of JRR-3. Three triple axis spectrometers are shownin the photo.

ISSP Activity Report 2022

53

International MegaGauss
Science Laboratory
The objective of this laboratory (Fig. 1) is to study thephysical properties of solid-state materials (such as metals,
semiconductors, insulators, superconductors, and magnetic
materials) in a high magnetic field of 100 T or even higher.
Such a high magnetic field can control material phases andfunctions. Our pulsed magnets, at the moment, can generate
up to 87 Tesla (T) by non-destructive manner, and up to 1200
T by destructive manner. The world record indoor magnetic
field 1200 T was achieved in 2018. The laboratory is open
for scientists in domestic as well as from overseas. Lots offruitful results have come out not only from the collaborative
researches but also from our in-house activities.

Fig. 1. The building C of the IMGSL.

Building C
Room
101-113

Bmax

Type

ElectroMagnetic
Flux Compression

Destructive

Horizontal
Single-turn Coil

Destructive

300 T
200 T

10 mm
6μs
5 mm
10 mm

VerticalSingle-turn Coil

Destructive

300 T
200 T

8μs
5 mm
10 mm

1200 T

60 T
Building C
Room
114-120

Building C
Room 121

Pulse width
Bore

Alias

3μs

(100-1200T)

Power source

Applications

Others

5 MJ, 50 kV
2 MJ, 50 kV

Magneto-Optical
Magnetization

5 K – room
temperature

0.2 MJ, 50 kV

Magneto-Opticalmeasurements
Magnetization

5 K – room
temperature

0.2 MJ, 40 kV

Magneto-Optical
Magnetization

2 K – room
temperature

0.9 MJ, 10 kV

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

40 ms
18 mm

Mid-pulse Magnet Non-destructive
70 T

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 othermagnetic materials. One of our ultimate goals is to provide
the joint-research users with a 100 T millisecond-long pulse
using a non-destructive magnet, and to offer versatile highprecision physical measurements. Measurable physicalquantities or properties are magneto-optical spectra, magnetization, magnetostriction, electrical transport, specific heat,
nuclear magnetic resonance, and ultrasound propagation.
They can be carried out with sufficiently high accuracy.
Another ultimate goal is to extend the magnetic field region
and discover novel phenomena happening only in extremely
strong magnetic fields exceeding 100 T. Recent technicaldevelopments allow us to even measure magnetostriction
and ultrasound propagation in the destructive magnetic
fields over 100 T, that can directly reach potential structuralchanges in the ultrahigh magnetic fields. Recent discovery ofmagnetic field induced insulator-metal transitions of strongly
correlated materials in 500 T would open new direction of
the megagauss field research, namely exploration of fieldinduced novel phases in materials with strong interactions
comparable to thermal energy of a room temperature.
A 210 MJ flywheel generator (Fig. 2), which is theworld's largest DC power supply (recorded in the Guinness
Book of World Records) was installed in the DC flywheel
generator station at our laboratory, and used as an energy
source of super-long pulse magnets. The magnet technologies are intensively devoted to the quasi-steady long pulse

40 ms
10 mm

PPMS

Steady14 T

ResistanceHeat Capacity

MPMS

Steady7T

Magnetization

87 T(2-stage pulse)

5 ms
10 mm

Short-Pulse Magnet Non-destructive
Building K
Long-Pulse Magnet Non-destructive

86 T

5 ms
18 mm

43.5 T

1s
30 mm

ISSP Activity Report 2022

Lowest temperature
0.1 K

Down to 0.3 K

0.5 MJ, 20 kV

Magnetization
Magneto-Transport

2 K – room
temperature

210 MJ, 2.7 kVResistance
Magneto-Calorimetry

2 K – room
temperature

Table 1. Available Pulse Magnets, Specifications

54

Independent
Experiment in 5 site

Fig. 4. Schematic picture of the V-type single-turn coil equipped witha 40 kV, 200 kJ fast capacitor bank system. The liquid-helium-bathcryostat with a plastic tail is also shown.

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

magnet (an order 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. Recently, the super-long pulsed magnet has
been intensively used to investigate thermal properties suchas specific heat and magnetocaloric effects.
Magnetic fields exceeding 100 T can only be obtainedwith destruction of a magnet coil. The ultrahigh magnetic
fields are obtained in a microsecond time scale. The project,financed by the Ministry of Education, Culture, Sports,
Science and Technology aiming to generate 1000 T withthe electromagnetic flux compression (EMFC) system(Fig. 3), has been completed. 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 cangenerate 450 T. The 5 MJ system is used for generation ofFig. 3. View of the coil setup of the electromagnetic flux compression inside of an anti-explosive house. The world's strongest indoor
magnetic field 1200 T was achieved in 2018.

1000 T-class magnetic field. For the research in magnetic
field range of 100 - 300 T, we have two single-turn coil
(STC) systems that have a fast-capacitor bank system of
200 kJ for each. One is the horizontal type (H-type) and theother is a vertical type (V-type, Fig. 4). Various kinds of laser
spectroscopy experiments such as the cyclotron resonanceand the Faraday rotation are possible using the H-type STC,
while a stable low temperature condition of 2 K is available
for the V-type STC.

Center of Computational
Materials Science
With the advancement of hardware and software technologies, large-scale numerical calculations have been making
important contributions to materials science and will haveeven greater impact on the field in the near future. CCMS
is a specialized research center established in 2011 forpromoting computer-aided materials science with massively
parallel computers, such as the Fugaku supercomputer,which has been developed in Kobe as the core of a billiondollar national project. Activities of CCMS are divided into
the following three categories: (1) highly efficient and largescale use of the Fugaku supercomputer and its application
to grand-challenge problems in computational materials
science, (2) activities as the center for the community ofcomputational condensed matter physics and materials
science, and (3) the matching program for computational
materials science in industry and academia.
For the first category, each group in CCMS is carryingout various individual research projects in its own expertise to efficiently utilize large-scale parallel computers. For
example, the Ozaki group has been developing efficientand accurate methods and software packages to extend theapplicability of DFT to more realistic systems, and investigated the structural and electronic properties of various
2D materials in successful collaboration with experimentalgroups and industrial companies. There are other activities
such as development of Tensor Network (TN) based numerical methods and Markov-chain Monte Carlo methods by the
Kawashima group and the Todo group.
As for the activities in the second category, apart frommajor annual conferences and formal international meetings,
the CCMS provided a series of lectures and training sessions
at Kashiwa. For example, training sessions "Kashiwa Hands-

ISSP Activity Report 2022

55

On" for getting accustomed to various application programs,
such as Hphi, TeNeS, mVMC, DSQSS, and MateriApps
LIVE!, as shown in Fig. 1, have been held monthly. Eachsession is designed for more than 10 trainees and takes 4-5hours. We also coordinate the use of the computational
resources available to our community, and support community members through various activities such as administrating the website "MateriApps" for information on application software in computational science as shown in Fig. 2.
For the third category, in order to foster young people
with a high level of expertise in computational materials
science and to support their career paths, the consortium
project, Professional Development Consortium for Computational Materials Scientists (PCoMS), was established cooperatively with Tohoku Univ., Institute for Molecular Science,and Osaka Univ in 2015. From 2020, CCMS has continued
to develop this consortium project by building a cooperative
framework with industrial companies, called MP-CoMS.
In the MP-CoMS, we have two activities: advanced humanresource development and matching program. The former
offers advanced lectures by university faculty members on
computational science for researchers, graduate students, andpostdoctoral fellows, and providing opportunities for humanresource exchange across industry-academia boundaries.
The latter intends bridging doctoral students, postdoctoral
fellows with participating companies who have a backgroundin computational science and materials science, and in every
year about 10 Ph. D students experience the internshipresearches in the participating company.
These activities are supported by funds for the MP-CoMS
and governmental projects including the Program for
Promoting Researches on the Supercomputer Fugaku.

Fig. 1. Software in the CCMS community

Fig. 2. MateriApps Website

56

ISSP Activity Report 2022

The following is the selected list of meetings organized
by CCMS in recent years:• 2022/5/12, 13 The ISSP Supercomputer Usage/
CCMS Joint Workshop.
• 2022/4/7-2022/7/28 On-line lecture series foradvanced computational science and technology B(2022).
• 2022/6/8,9 Matching Workshop for industries &
graduate students/postdocs.
• 2022/9/9,16,22,30 MP-CoMS on-line lecture series
for fundamentals and applications of materials
informatics.
• 2022/10/26 The 14th workshop for the computational
materials science in the post Fugaku era.
• 2023/2/24 The 15th workshop for the innovationin materials development through integration ofcomputational and metrology science.
• 2023/3/29 DxMT workshop: frontiers indevelopment of machine learning potentials
In addition to the events listed above, we organizedregular hands-on program for various application, such as
Hφ and mVMC.

Laser and Synchrotron Research Center(LASOR Center)
Laser and synchrotron research center (LASOR Center)
was established in October 2012 to push the frontiers of
the photon and materials science. LASOR has 10 groups
in 2022, which is the biggest division in ISSP. Most of theresearch activities on the development of new lasers with anextreme performance and the application to materials science
are studied in specially designed buildings D and E withlarge clean rooms and the isolated floor from the vibrationsin Kashiwa Campus. We also have a clean room for a laser
processing platform in Kashiwa II Campus. On the other
hand, the experiments utilizing the synchrotron radiation are
performed at SPring-8 and SACLA (Hyogo). Recently new
beamline is under development at Nano Terasu in Sendai.
The development of new laser light sources in thevacuum ultraviolet to soft x-ray region has revolutionizedmaterials research, represented by photoelectron spectroscopy with the highest energy resolution, ultrafast timedomain spectroscopy, and ultrafast nonlinear spectroscopy.
Materials science research powered by lasers thus hasentered a new era. The ultra-short and high-power lasers are
more and more attractive light source for both basic scienceFig. 1. Optical frequency comb

Fig. 2. Close look of a high-peak-power ultrashort-pulse laser

and industry. The state-of-the-art laser source and spectroscopy are intensively explored.
Another stream pursued at ISSP is the synchrotron-based
research. The drastic advance in brilliance of the synchrotron
radiation has also opened a new field of its own in photon
science. The soft-X-ray beam-line in SPring-8 (BL07LSU)
has been implemented with the longest undulator in theworld: The end stations illuminated by the brilliant soft-Xrays are used to output innovative achievements based onhigh-resolution spectroscopy data. In 2018, Japanese government has made a statement to construct a new synchrotron
facility in Tohoku (Nano Terasu). LASOR has decided tosubjectively contribute to this facility from the design to theoperation, and Nano Terasu is now under construction.
Lasers and synchrotrons have developed independently;
now both light sources cover a wide photon-energy range
with an overlap in the vacuum-ultraviolet to soft-X-ray
regions. Foreseeing their common interests in research fields
and technologies, ISSP integrated the two streams, namely
the extreme lasers and synchrotron radiations, into thecommon platform. Through the mutual interactions between
the forefronts of lasers and synchrotrons, LASOR will be
the center of innovations in light and materials science, withthe aid of world-wide joint research and close collaborations
with other divisions in ISSP such as New Materials Science,
Nanoscale Science, and Condensed Matter Theory.
The mission of LASOR is to cultivate and propel thefollowing three scientific fields:

Fig. 3. Spin-resolved photo-emission spectroscopy.

Fig. 4. Phase-dependence of high harmonic spectra in soft X rays.

1. Laser Science,
2. Synchrotron radiation Science,
3. Extreme Spectroscopy,• Laser science group
We were committed to continuing to develop various
state-of-the-art laser systems such as high-power solid-stateor gas lasers, high-intensity lasers, ultra-short pulse lasers
down to attosecond time scale (Peta-Hz linewidth), ultrastable lasers with 1-Hz linewidth, optical frequency combs,
mid-infrared lasers, THz light source, and semiconductor
lasers.
High-power and ultrashort pulse laser technology has
progressed for these 10 years. It opened two directions ofresearch. One is a coherent extreme ultraviolet light source
realized by a high-harmonic generation (HHG) scheme. The
average power of HHG became high enough to use it for a
photoemission spectroscopy. The photon energies of 7 eV
to 60 eV are now available. They can be either very narrow
band width or ultrashort pulse. The other is an industrial
science such as a laser processing. Pulse duration variable,
100-W average power, femtosecond laser is now available in
LASOR for any collaborative research including companies.
We have a laser processing platform for both industrial andscientific applications.
We also aim to develop novel laser spectroscopy andcoherent non-linear optical physics, enabled via emerging
lasers and optical science/technology, and extensively study
basic light-matter physics, optical materials science, andapplied photonics. Such researches include ultrafast spectroscopy for excited state dynamics, terahertz magnetic-field
spectroscopy for spin dynamics, quantitative micro-spectroscopy on semiconductor lasers and nano-structure photonics
devices, such as quantum wire lasers, gain-switch semicon-

Fig. 5. Generation of 7-eV, femtosecond light with (a) Xe and (b) Xe/Ar
gases.

ISSP Activity Report 2022

57

Fig. 6. Pump-probed photoemission system using 60-eV laser

ductor laser, multi-junction solar cells, and bio-luminescentsystems.
• Synchrotron radiation science group
By inheriting and developing the synchrotron techniques
cultivated for more than 20 years, we continuously develop
world cutting-edge spectroscopies such as time-resolved
photoemission /diffraction, ultrahigh resolution soft X-ray
emission, 3D (depth + 2D microscopy) nano ESCA and
X-ray magneto-optical effect and provide these techniques
both for basic material science and for applied science,
which contributes to the device applications in collaboration
with outside researchers. In order to pioneer new spectroscopies for the next-generation light sources, we upgrade
fast polarization switching of the undulator light source incooperation with SPring-8. In addition, we promote frontier
works on the use of X-ray free electron lasers, SACLA withhigh spatial and temporal coherence comparable to opticallasers in collaboration with scientists of laser light sources
and spectroscopies.
• Extreme spectroscopy group
The advent of laser-based light sources in the softX-ray region is opening a new stage in the field that has
been cultivated by the synchrotron radiations. One of themilestones is to develop a laser-based light source of ~7 eV
for the sub-meV-resolution photoemission spectroscopy.
In these five years, available photon energy became 11 eVwith help of Yb-fiber laser technology. It has high photon
flux (1014 photons/sec) with sub picosecond time resolution.

Fig. 7. Photonics devices under study: (left panel) semiconductor
quantum wires and (right panel) firefly-bioluminescence system
consisting of light emitter (oxyluciferin) and enzyme (luciferase)

58

ISSP Activity Report 2022

Laser-based spin-resolved ARPES is realizing in LASOR
with 11 eV laser. This technology would open brand-new
spectroscopy. High-harmonic generation based photoemission spectroscopy in the 20-60 eV region is another direction
to be pursued. Time-domain spectroscopy in the femtosecond
region was achieved. Combined with the picosecond timedomain spectroscopy utilizing the pulsed light deliveredfrom synchrotrons, we investigate the electronic structuresand dynamics of matter in bulk, on surface, and into thenano-scale. The ultimate objective is to expand the softX-ray operando methodologies by lasers. Diffractions,magneto-optical effects, and inelastic scatterings now done atsynchrotrons will be performed by lasers, to access the realtime dynamics of chemical reactions and phase transitions
down to the femtoseconds.
State-of-the-art laser based organism spectroscopy is
new direction in LASOR. ISSP research area is shifting from
simple material and science to complex one including living
body and functional material with excited state physics.

Synchrotron Radiation Laboratory
The Synchrotron Radiation Laboratory (SRL) was estab­lished in 1975 as a research division dedicated to solidstate physics using synchrotron radiation. Currently, SRL
is composed of three research sites, the Sendai office, theHarima office and the E-building of the Institute for Solid
State Physics.
• Synchrotron soft X-ray experimental stations at
Sendai office and Harima office
In 2006, the SRL staffs joined the Materials Research
Division of the Synchrotron Radiation Research Organization (SRRO) of the University of Tokyo, and they
played an essential role in constructing a high brilliant andpolarization-controlled 25-m long soft X-ray undulator
beamline, BL07LSU, in SPring-8. The construction wascompleted in 2009 and SRL established the Harima branchlaboratory in SPring-8. The beamline was equipped withelectromagnetic phase shifters that allow fast switching of
the circularly (left, right) and linearly (vertical, horizontal)
polarized photons, covering the photon energy range from
250 eV to 2 keV. At the downstream of the beamline, a lotof experimental stations have been developed for frontier
spectroscopy researches. In 2022, four endstations, ambientpressure X-ray photoemission (APXPS) (Fig. 1a), soft
X-ray imaging (ptychography) (Fig. 1b), three-dimensional
nanoESCA (3DnanoESCA) (Fig. 1c), high resolution soft
X-ray emission spectroscopy (HORNET) (Fig. 1d) stations
were maintained by the SRL staffs and open for the jointresearch program. The APXPS system achieved the 100 Torr
XPS measurement and is used for various catalytic reactions
including CO2 reduction; the soft X-ray imaging station
established a new soft X-ray ptychography system using a
total-reflection Wolter mirror with a resolution of approximately 50 nm. Long working distance of the system enables
stereo imaging with a large rotation angle; the 3DnanoESCA station reached the spatial resolution of 70 nm and isequipped with a sample holder with a 5-terminal electrodededicated for the analysis of secondary battery materials,
high electron mobility transistors etc.; the HORNET station
provides spectra with the energy resolution around 70 meV
at 400 eV and enables real ambient pressure experiments

Fig. 1 Soft X-ray experimental stations dedicated for the joint-research
program at SPring-8 (a) Ambient pressure photoemission (APXPS)(b) Soft X-ray imaging (c) 3DnanoESCA (d) Soft X-ray emission(HORNET). APXPS, 3DnanoESCA and HORNET stations have beentransferred to the new 3GeV synchrotron facility NanoTerasu at the endof FY2022.

on various targets including solution and its interface withsolids and gases. In the first half of the 2022 cycle, 21 usergroups made their experiments. The joint-research programat SPring-8, which lasted for 13 years, was terminated inAugust 2022, and the management of the beamline wastransferred to the RIKEN SPring-8 Center. In November
2022, the Sendai office was established in the Aobayama
campus of Tohoku University under the auspices of a new
SRRO launched in April 2022 comprising six departmentsof the University of Tokyo. At the end of FY2022, the
APXPS, XES, and 3DnanoESCA stations have been moved
to the new 3GeV synchrotron facility NanoTerasu in Sendai,
which will start operation in FY2024. The Harima office atSPring-8 continues and the development of the soft X-ray
imaging station is cooperated with the RIKEN SPring-8
Center.

the new SARPES system has been opened for the jointresearch program. The Laser-SARPES system consists ofan analysis chamber, a carousel chamber connected to aload-lock chamber, and a molecular beam epitaxy chamber,which are kept ultra-high vacuum (UHV) environment
and are connected to UHV gate valves. The electrons are
excited with 6.994 eV photons, yielded by 6th harmonic ofa Nd:YVO4 quasi-continuous wave laser with a repetition
rate of 120 MHz, and 10.7 eV photons, driven by the third
harmonic radiation at 347 nm of an Yb:fiber chirped pulse
amplifier laser, which was developed by Kobayashi's lab in
LASOR. The hemispherical electron analyzer is a custommade Scienta Omicron DA30-L, modified for installingthe spin detectors. The spectrometer is equipped with two
high-efficient spin detectors orthogonally placed each other,
associating very low energy electron diffraction, whichallows us to analyze the three-dimensional spin polarization of electrons. At the exit of the hemispherical analyzer,a multi-channel plate and a CCD camera are also installed,which enables us to perform the angle-resolved photoelectron spectroscopy with two-dimensional (energy-momentum)
detection. The laser-SARPES with 7 eV laser 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. In addition,using the 10.7 eV makes it possible to follow their ultrafast
spin dynamics in the time domain by pump-probe scheme.
A spectroscopy system using a dichroic mirror (SiO2/HfO2
multilayer) was introduced for a stable switching of the 7 eV
and 10.7 eV lasers.
The time-resolved soft X-ray spectroscopy (TR-SX)
station was moved from SPring-8 BL07LSU to theE-building in 2020. The measurement chamber is equippedwith a unique electron spectrometer, the two-dimensional(2D) angle-resolved time-of-flight (ARTOF) analyzer(Fig. 2b). The system is currently operational for measurements of 2D angle-resolved photoemission spectroscopy
with pulsed laser of 6 eV photon energy supplied by Itatani’s
lab in LASOR. Time-resolved measurements can also be
conducted with temporal resolution of 600 fs. An ultra highspeed reading and visualization program is currently indevelopment to enhance usability.

• High-resolution Laser SARPES and ARTOF systems
at E-building
High-resolution Laser Spin- and Angle-Resolved
Photoemission Spectroscopy (SARPES) is a powerful
technique to investigate the spin-dependent electronic states
in solids. In FY2014, LASOR and SRL staffs constructed
a new SARPES apparatus (Fig. 2a), which was designed
to provide high-energy and angular resolutions and highefficiency of spin detection using a laser light at E-building.
The achieved energy resolution of 1.7 meV in SARPES
spectra is the highest in the world at present. From FY2015,

Fig. 2 (a) Laser-SARPES system and (b) ARTOF system at E-building.

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Conferences and Workshops
Research Front of Neutron Scattering- Achievements from the User-program Support for Overseas Experiments and Latest
Results from JRR-3 -April 18-20, 2022
O. Yamamuro, T. Masuda, T. Nakajima, and K. Mayumi

After the great east Japan earthquake in 2011, the Japan Research Rector-3 (JRR-3), which was the largest neutron sciencefacility before J-PARC started, stopped the operation. Since then, the Neutron Science Laboratory of the Institute for Solid
State Physics (ISSP-NSL) had supported research groups conducting neutron scattering experiments in overseas facilities.
In this workshop, 8 users presented their results obtained in the overseas experiments. In 2021, JRR-3 finally restarted, and
ISSP-NSL also restarted the joint-use program on neutron research in JRR-3. In this workshop, the instrument scientists of
the neutron scattering instruments in JRR-3 gave talks on the current status of their instruments, and the users of the joint-use
program in FY2021 also presented the latest results. The workshop was held only online. There were approximately 50-100
participants on each day. These presentations were accompanied by active discussions, which would contribute to the development of the neutron scattering community in Japan.

Computational Materials Science —New Perspectives—

May 12-13, 2022
H. Noguchi, T. Ozaki, N. Kawashima, O. Sugino, T. Fukushima, K. Ido, M. Kawamura,
J. Haruyama, M. Fukuda, S. Morita, F. Oba, T. Ono, H. Watanabe, and Y. Higuchi

This workshop was organized for the computational condensed matter research community, especially for the users of the
ISSP supercomputers, to exchange the most recent information on the computational condensed matter research and on thehigh-performance computation of related research areas. This was held as a series of annual workshops of ISSP supercomputerthat has been held every year. This year, it was held in a hybrid style for the first time. Most of talks were presented on-siteand also broadcasted online. The posters were presented online. The selected topics include the progress made in the elements
strategy projects, the emergent data-driven material research, and the project for advancement of software usability in materials
science (PASUMS) that developed the unified platform of experiment-data analysis for 2D material structure and implemented
the ESM RISM method in Quantum ESPRESSO in 2021. In addition to 14 invited talks and 32 poster presentations, two
special lectures for material informatics were given by Dr. Yoshihiko Takano and Prof. Haruki Watanabe.

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ISSP Activity Report 2022

Development of 1000-Tesla Science

June 10-11, 2022
Y. Matsuda

This workshop was organized to newly explore ultrahigh magnetic field science in a 1000 T range and have researchers
exchange current interests and the latest achievements in the research area. Since the world record of 1200 T in 2018, several
scientific results have been obtained such as field-induced insulator-metal phase transition in strongly correlated materials andstructural phase transitions in frustrated spin systems. On top of that, several novel measurement techniques such as magnetostriction, electrical impedance in radio-frequency range, and sound velocity have been developed for the destructive ultrahighmagnetic fields, leading to the exploration of a new research area using 1000 T. Researchers from different areas like solidstate physics, chemistry, bioscience, particle physics, and plasma science got together. A variety of topics were discussed fromthe viewpoint of the potential novel effects and phenomena. Among those topics, the magnetic field effect on the ferroelectricphase transition was intensively discussed. Although the phonon has generally been thought to be insensitive to the magnetic
field, the strong magnetic field can affect the phonon mode even through direct Lorentz force to the charged ions. The potential
magnetic field effect on the ferroelectric material sounded to be one of the most interesting themes in the 1000 T research.

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Frontiers of Protein Sciences: Close Collaboration between Theory and Experiment
July 26-27, 2022
H. Noguchi, K. Inoue, and Y. Shigeta
Recent developments in supercomputers and experimental methods have combined to make significant progress in the fieldof analyses on structures and functions of proteins and organelles in living organisms. In order to exchange information on thelatest results and discuss future prospects for joint theoretical, computational, and experimental research in protein science,
this ISSP regular workshop was organized in the hybrid type (in person and online) format. In this workshop, 20 lectures were
given in a wide range of biophysics fields for both theoretical and experimental studies. Active discussions were also held in 16
poster presentations. The workshop attracted a great deal of attention, with 102 participants registered, including online participants, 26 on-site participants on the first day and 29 on the second day (total of 32), and the maximum number of simultaneous
online participants was 67.

Exchange Meeting for Young Women Condensed Matter Physicists 2022

November 15, 2022
S. Miwa, T. Ideue, K. Inoue, M. Oshikawa, Y. Kohama, T. Nakajima,
H. Noguchi, T. Fujino, I. Matsuda, and M. Lippmaa.

This workshop was organized to support women researchers in the research field of condensed matter physics. This
workshop is part of the events of the ISSP Women’s Week 2022. In order to organize this workshop, we set up a working groupconsisting of ISSP professors selected from each division/group/laboratory. We discussed a lot about the style of the workshop
and decided that the main purpose of this workshop is to interact with each other. The workshop consists of oral and poster
presentations and panel discussions. We invited 25 young women researchers, including assistant professors, postdocs, andgraduate students. The presentations cover a wide range of topics in the research fields of physics, chemistry, and biology. Allof the presentations were held on the 6th floor of the ISSP main building and were successfully concluded. Especially, in theposter session, not only the female participants but also the members of ISSP joined the discussion and it was very exciting.
The number of participants was 63, including 43 on-site and 20 online registrations.

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ISSP Activity Report 2022

Recent Developments and Future Prospects of Chiral Materials

December 22-24, 2022
H. Kusunose, H. Tsunetsugu, J. Kishine, Y. Togawa, H. Yamamoto, and T. SatohChirality is a significant concept that bridges across multi-scale research fields such as physics, chemistry, biology, andastronomy. Recently, there has been growing interest in the nontrivial couplings among electromagnetic fields, electronic spins
and orbitals, phonons, heat current, etc. in chiral systems. In these circumstances, we organized this workshop aimed at stimulating a renaissance in materials science from the perspective of chirality. The specific focused topics include chiral magnetism,
chiral phonon, cross-correlated phenomena inherent from chirality, visualization of chirality, chirality-induced spin selectivity(CISS). The workshop was held for three days in a hybrid style, and featured 17 invited talks, 20 contributed talks, and 23
poster presentations, most of which were given on-site. Pre-registrations reached 200 people from a wide range of research
fields and generations, and there were 500 participants throughout the workshop (164 on-site, and 336 on-line). The workshop
provided an excellent opportunity for researchers from various backgrounds to share the basic concept of chirality, update theirunderstanding of chirality, and promote a cultural exchange that could lead to new collaborations in the near future.

Frontiers of Anyons and Fractional Statistical Particle Studies in Solids
February 13–14, 2023
M. Udagawa, Y. Otani, T. Osada, M. Oshikawa, Y. Kasahara, M. Hashisaka, and M. Yamashita
Anyons, following fractional statistics in two-dimensional systems, are not only interesting in their own right, but are also
attracting a great deal of attention as emergent particles in solids that enable topological quantum computing. This workshop
was organized to gather researchers studying anyons and Majorana fermions in various systems, including 2D quantum Hall
systems, 1D quantum nanowires, topological superconductors, and Kitaev spin liquids. In this workshop, various topics are
discussed, such as the progress of braiding experiments in fractional quantum Hall systems, Majorana fermions in topologicalsuperconducting states and the challenges of detecting Majorana zero modes in 1D quantum wire experiments, the progressof experiments on the Kitaev candidate α-RuCl3, the mathematics of quantum calculations using non-Abelian anyons, and thechallenges for preventing errors in the quantum calculations. We invited 4 keynote speakers for the tutorial presentations and 11
invited speakers to cover the research in these areas, in addition to 11 contributed poster presentations. The meeting was held ina hybrid format, combining a face-to-face meeting in the Media Hall in Kashiwa Campus Library and a Zoom meeting. A totalof about 120 people attended the on-site meeting, and nearly 160 people participated online.

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Publications (2022.1 - 2023.4)
Division of Condensed Matter Science
Mori group
We have successfully developed and unveiled unprecedented functional properties for the molecular materials and systems.
The major achievements in 2022 are (1) to develop the doped EDOT(3,4-ethylenedioxythiophene)-based oligomer conductors,(2) to discover novel anhydrous molecular superproton conductivity of imidazolium dihydrogen phosphate, and (3) to develop
ambipolar nickel dithiolene complex semiconductors.
1.

Terahertz Radiation with Multi-Narrowband Components via Photoinduced Melting of Charge Order in an ElectronicType Ferroelectric Organic α-(BEDT-TTF)2I3: Y. Kinoshita, H. Yamakawa, T. Miyamoto, K. Yamamoto, H. Mori, H.
Okamoto and N. Kida, J. Phys. Soc. Jpn. 91, 094705 (2022).

2.

*Charge and spin interplay in a molecular-dimer-based organic Mott insulator: N. Drichko, S. Sugiura, M. Yamashita,

A. Ueda, S. Uji, N. Hassan, Y. Sunairi, H. Mori, E. I. Zhilyaeva, S. Torunova and R. N. Lyubovskaya, Phys. Rev. B 106,064202 (2022).

3.

†Proton–electron-coupled functionalities of conductivity, magnetism, and optical properties in molecular crystals: H.

4.

Conjugation length effect on the conducting behavior of single-crystalline oligo(3,4-ethylenedioxythiophene) (n EDOT)
radical cation salts: R. Kameyama, T. Fujino, S. Dekura and H. Mori, Phys. Chem. Chem. Phys. 24, 9130 (2022).

5.

*Band-filling effects in single-crystalline oligomer models for doped PEDOT: 3,4-ethylenedioxythiophene (EDOT)

6.

†Molecular Arrangement Control of [1]Benzothieno[3,2- b ][1]benzothiophene (BTBT) via Charge-Assisted Hydrogen

7.

Isotropic Anhydrous Superprotonic Conductivity Cooperated with Installed Imidazolium Molecular Motions in a 3D
Hydrogen-Bonded Phosphate Network: S. Dekura, M. Mizuno and H. Mori, Angew Chem Int Ed 61, e202212872(1-7)(2022).

8.

†*Ambipolar Nickel Dithiolene Complex Semiconductors: From One- to Two-Dimensional Electronic Structures Based

9.

†Neutral Radical Molecular Conductors Based on a Gold Dimethoxybenzenedithiolene Complex with and without

Mori, S. Yokomori, S. Dekura and A. Ueda, Chem. Commun. 58, 5668 (2022).

dimer salt with hydrogen-bonded infinite sulfate anion chains: R. Kameyama, T. Fujino, S. Dekura, S. Imajo, T.
Miyamoto, H. Okamoto and H. Mori, J. Mater. Chem. C 10, 7543 (2022).
Bond: R. Akai, K. Oka, S. Dekura, H. Mori and N. Tohnai, BCSJ 95, 1178 (2022).

upon Alkoxy Chain Lengths: M. Ito, T. Fujino, L. Zhang, S. Yokomori, T. Higashino, R. Makiura, K. J. Takeno, T. Ozaki
and H. Mori, J. Am. Chem. Soc. 145, 2127 (2023).
Crystal Solvent: S. Yokomori, S. Dekura, A. Ueda, T. Higashino and H. Mori, Chem. Lett. 52, 25 (2023).

10. †*Precise Control of the Molecular Arrangement of Organic Semiconductors for High Charge Carrier Mobility: R. Akai,
K. Oka, S. Dekura, K. Yoshimi, H. Mori, R. Nishikubo, A. Saeki and N. Tohnai, J. Phys. Chem. Lett. 14, 3461 (2023).
11. 水素を使いこなすためのサイエンス ハイドロジェノミクス : 森 初果 , ( 共立出版 , ISBN 978-4-320-04498-2, 2022).

Osada group
We have theoretically and experimentally established that the quantum thermoelectric Hall effect (QTHE) appears even in the
3D semimetals with straight nodal lines. It corresponds to the QTHE in 3D Dirac/Weyl semimetals with nodal points. In the
QTHE, the plateau-like constant thermoelectric Hall conductivity αxy is observed at the high-magnetic-field quantum limit.
When the magnetic field is parallel to the nodal lines, the n=0 ground Landau subband of the nodal line semimetal plays thesimilar role as the pair of the n=0 chiral Landau subbands of Dirac/Weyl semimetals. We successfully observed the QTHE,
which quantitatively agrees with the theoretical calculation, in bulk graphite with straight nodal lines. We also discussed the* Joint research among groups within ISSP.

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ISSP Activity Report 2022

dimensional crossover of the QTHE from 3D to 2D in graphite thin-films.
1.

Observation of possible nonlinear anomalous Hall effect in organic two-dimensional Dirac fermion system: A.
Kiswandhi and T. Osada, J. Phys.: Condens. Matter 34, 105602(1-7) (2022).

2.

Thermoelectric Hall Effect at High-Magnetic-Field Quantum Limit in Graphite as a Nodal-Line Semimetal: T. Osada, T.
Ochi and T. Taen, J. Phys. Soc. Jpn. 91, 063701(1-4) (2022).

3.

Weak localization on moire superlattice in twisted double bilayer graphene: M. Kashiwagi, T. Taen, K. Uchida, K.
Watanabe, T. Taniguchi and T. Osada, Jpn. J. Appl. Phys. 61, 100907(1-5) (2022).

4.

有機ディラック電子系におけるトポロジカル輸送現象 : 長田 俊人 , 固体物理 57, 227-240 (2022).

5.

有機ディラック電子系における非線形トポロジカル輸送現象 : 長田 俊人 , キスワンディ アンディカ , 日本物理学会誌 77,

6.

Quantized thermoelectric Hall plateau in the quantum limit of graphite as a nodal-line semimetal: A. Kiswandhi, T.
Ochi, T. Taen, M. Sato, K. Uchida and T. Osada, Phys. Rev. B 107, 195106(1-5) (2023).

233-238 (2022).

Yamashita group
We have been studying (1) quantum criticality in heavy-fermion materials by ultralow temperature cryostat, (2) thermal-Hall
conductivity of exotic excitations in frustrated magnets and (3) a new technique for the study of strongly-correlated electron
systems. In this year, we have performed (1) ultralow-temperature resistivity measurements of UTe2, (2) thermal-Hall measurements of AFM skyrmions in MnSc2S4, (3) spontaneous thermal Hall measurements of candidate materials of chiral superconductivity, and (4) NMR measurements of EuIn2As2.
1.

Anomalous electromagnetic response in the spin-triplet superconductor UTe2: Y. Shimizu, S. Kittaka, Y. Kono, T.
Sakakibara, K. Machida, A. Nakamura, D. Li, Y. Homma, Y. J. Sato, A. Miyake, M. Yamashita and D. Aoki, Phys. Rev.
B 106, 214525 (2022).

2.

*Charge and spin interplay in a molecular-dimer-based organic Mott insulator: N. Drichko, S. Sugiura, M. Yamashita,

3.

Resistivity and thermal conductivity of an organic insulator β′–EtMe3Sb[Pd(dmit)2]2: M. Yamashita, Y. Sato, Y.
Kasahara, S. Kasahara, T. Shibauchi and Y. Matsuda, Scientific Reports 12, 9187 (2022).

4.

Field-induced topological Hall effect in antiferromagnetic axion insulator candidate EuIn2As2: J. Yan, Z. Z. Jiang, R. C.
Xiao, W. J. Lu, W. H. Song, X. B. Zhu, X. Luo, Y. P. Sun and M. Yamashita, Phys. Rev. Research 4, 013163 (2022).

5.

Planar thermal Hall effects in the Kitaev spin liquid candidate Na2Co2TeO6: H. Takeda, J. Mai, M. Akazawa, K.
Tamura, J. Yan, K. Moovendaran, K. Raju, R. Sankar, K.-Y. Choi and M. Yamashita, Phys. Rev. Research 4, L042035(2022).

6.

Topological thermal Hall effect of magnons in magnetic skyrmion lattice: M. Akazawa, H.-Y. Lee, H. Takeda, Y.
Fujima, Y. Tokunaga, T.-H. Arima, J. H. Han and M. Yamashita, Phys. Rev. Research 4, 043085 (2022).

A. Ueda, S. Uji, N. Hassan, Y. Sunairi, H. Mori, E. I. Zhilyaeva, S. Torunova and R. N. Lyubovskaya, Phys. Rev. B 106,064202 (2022).

Ideue group
We have investigated the optical and magnetic properties of layered van der Waals crystals. By applying strain, we havesuccessfully controlled the symmetry of 3R-MoS2 and demonstrated the giant enhancement of bulk photovoltaic effectreflecting the polar structure. In addition, we have clarified that photovoltaic property along the out-of-plane direction isaffected by the stacking sequence of two-dimensional semiconductors. We have also reported the effective modulation ofmagnetic properties such as transition temperature and magnetic anisotropy by applying pressure or electrolyte gating.
1.

空間反転対称性の破れた結晶における整流現象 : 井手上 敏也 , 板橋 勇輝 , 岩佐 義宏 , 日本物理学会誌 77, 475-480

2.

Spontaneous-polarization-induced photovoltaic effect in rhombohedrally stacked MoS2: D. Yang, J. Wu, B. T. Zhou, J.
Liang, T. Ideue, T. Siu, K. M. Awan, K. Watanabe, T. Taniguchi, Y. Iwasa, M. Franz and Z. Ye, Nat. Photon. 16, 469-474(2022).

3.

Magnetic Anisotropy Control with Curie Temperature above 400 K in a van der Waals Ferromagnet for Spintronic
Device: Z. Li, M. Tang, J. Huang, F. Qin, L. Ao, Z. Shen, C. Zhang, P. Chen, X. Bi, C. Qiu, Z. Yu, K. Zhai, T. Ideue, L.

(2022).

† Joint research with outside partners.

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Wang, Z. Liu, Y. Tian, Y. Iwasa and H. Yuan, Advanced Materials 34, 2201209 (2022).
4.

Giant bulk piezophotovoltaic effect in 3R-MoS2: Y. Dong, M.-M. Yang, M. Yoshii, S. Matsuoka, S. Kitamura, T.
Hasegawa, N. Ogawa, T. Morimoto, T. Ideue and Y. Iwasa, Nat. Nanotechnol. 18, 36-41 (2023).

5.

Continuous manipulation of magnetic anisotropy in a van der Waals ferromagnet via electrical gating: M. Tang, J.
Huang, F. Qin, K. Zhai, T. Ideue, Z. Li, F. Meng, A. Nie, L. Wu, X. Bi, C. Zhang, L. Zhou, P. Chen, C. Qiu, P. Tang, H.
Zhang, X. Wan, L. Wang, Z. Liu, Y. Tian, Y. Iwasa and H. Yuan, Nat. Electron. 6, 28-36 (2023).

Division of Condensed Matter Theory
Tsunetsugu group
We have collaborated with the visiting professor, Dr. Hiroaki Kusunose, and investigated fundamental properties of phonons inchiral crystals. The main issue is how to characterize the splitting in the phonon energy dispersion between two chiral modes
with different crystal angular momentum (CAM), which is specific to the systems with chiral crystal structure. Examining
necessary conditions for their dynamical matrix, we have proved that the sound velocity is identical for the two chiral modes
with CAM +1 and –1, which invalidates precedent some discussions expecting its splitting. The effects of chiral structure
are manifested in a linear energy splitting of the optical phonon modes and we have derived a simple formula for its linear
coefficient represented in terms of parameters in the microscopic model. This is a pseudo-scalar and related to electric toroidal
monopole G0 of the system.
1.

*Stimulated Rayleigh Scattering Enhanced by a Longitudinal Plasma Mode in a Periodically Driven Dirac Semimetal

2.

Diabatic and adiabatic transitions between Floquet states imprinted in coherent exciton emission in monolayer WSe2: K.
Uchida, S. Kusaba, K. Nagai, T. N. Ikeda and K. Tanaka, Science Advances 8, eabq7281 (2022).

3.

Criticality and rigidity of dissipative discrete time crystals in solids: K. Chinzei and T. N. Ikeda, Phys. Rev. Research 4,023025 (2022).

4.

Floquet-Landau-Zener interferometry: Usefulness of the Floquet theory in pulse-laser-driven systems: T. N. Ikeda, S.
Tanaka and Y. Kayanuma, Phys. Rev. Research 4, 033075 (2022).

5.

†Theory of Energy Dispersion of Chiral Phonons: H. Tsunetsugu and H. Kusunose, J. Phys. Soc. Jpn. 92, 023601

6.

Cd3As2: Y. Murotani, N. Kanda, T. N. Ikeda, T. Matsuda, M. Goyal, J. Yoshinobu, Y. Kobayashi, S. Stemmer and R.
Matsunaga, Phys. Rev. Lett. 129, 207402 (2022).

(2023).

ユニークな四極子秩序の安定化機構の発見 : 服部 一匡 , 石飛 尊之 , 常次 宏一 , 固体物理 57, 255-266 (2022).

Kato group
The main research subject of Kato Lab. is transport properties in mesoscopic and spintronic devices. We studied (1) heat transport through a two-level system under continuous quantum measurement, (2) spin pumping from ferromagnetic insulators tounconventional superconductors and anisotropic Dirac systems, (3) non-adiabatic corrections in electronic transport through aquantum dot, (4) spin Hall magnetoresistance in metals coupled with two-dimensional spin systems, (5) high-harmonic generation in distorted graphens, and (6) nonequilibrium noise in the BCS-BEC crossover.
1.

Kondo Effect and Phase Measurement in Double Quantum Dot in Parallel: Y. Zhang, R. Sakano and M. Eto, J. Phys.
Soc. Jpn. 91, 014703(1-10) (2022).

2.

Nonadiabatic Correction and Adiabatic Criteria of Noninteracting Quantum Dot Systems: M. Hasegawa and T. Kato, J.
Phys. Soc. Jpn. 91, 074705(1-8) (2022).

3.

Current noise and Keldysh vertex function of an Anderson impurity in the Fermi-liquid regime: A. Oguri, Y. Teratani, K.
Tsutsumi and R. Sakano, Phys. Rev. B 105, 115409(1-37) (2022).

4.

Ferromagnetic resonance modulation in d-wave superconductor/ferromagnetic insulator bilayer systems: Y. Ominato, A.
Yamakage, T. Kato and M. Matsuo, Phys. Rev. B 105, 205406(1-7) (2022).

5.

Heat transport through a two-level system under continuous quantum measurement: T. Yamamoto, Y. Tokura and T.
Kato, Phys. Rev. B 106, 205419 (2022).

* Joint research among groups within ISSP.

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6.

Spin pumping into anisotropic Dirac electrons: T. Funato, T. Kato and M. Matsuo, Phys. Rev. B 106, 144418(1-10)(2022).

7.

Einstein–de Haas Nanorotor: W. Izumida, R. Okuyama, K. Sato, T. Kato and M. Matsuo, Phys. Rev. Lett. 128,
017701(1-6) (2022).

8.

†*TeNeS: Tensor network solver for quantum lattice systems: Y. Motoyama, T. Okubo, K. Yoshimi, S. Morita, T. Kato

9.

Fluctuation theorem for spin transport at insulating ferromagnetic junctions: T. Sato, M. Tatsuno, M. Matsuo and T.
Kato, Journal of Magnetism and Magnetic Materials 546, 168814(1-6) (2022).

and N. Kawashima, Computer Physics Communications 279, 108437 (2022).

10. †*MateriApps LIVE! and MateriApps Installer: Environment for starting and scaling up materials science simulations:Y. Motoyama, K. Yoshimi, T. Kato and S. Todo, SoftwareX 20, 101210 (2022).
11. Effect of vertex corrections on the enhancement of Gilbert damping in spin pumping into a two-dimensional electron
gas: M. Yama, M. Matsuo and T. Kato, Phys. Rev. B 107, 174414 (2023).
12. *Shear-strain controlled high-harmonic generation in graphene: T. Tamaya, H. Akiyama and T. Kato, Phys. Rev. B 107,
L081405 (2023).
13. Spin Hall magnetoresistance in quasi-two-dimensional antiferromagnetic-insulator/metal bilayer systems: T. Ishikawa,
M. Matsuo and T. Kato, Phys. Rev. B 107, 054426 (2023).
14. Nonequilibrium noise as a probe of pair-tunneling transport in the BCS–BEC crossover: H. Tajima, D. Oue, M. Matsuo,
T. Kato and D. Abbott, PNAS Nexus 2, pgad045 (2023).
15. 電子スピンにより駆動するナノモーター : 泉田 渉 , 奥山 倫 , 加藤 岳生 , 松尾 衛 , 固体物理 57, 547-554 (2022).
16. 一歩進んだ理解を目指す物性物理学講義 : 加藤 岳生 , ( サイエンス社 , 東京 , 2022).
17. 電磁気学入門 ( 物理学レクチャーコース ): 加藤 岳生 , ( 裳華房 , 東京 , 2022).

Division of Nanoscale Science
Katsumoto group
We have experimentally found that an increase in the curvature of the electron orbit increases the portion of non-adiabatic
transition at the orbital corner. This is used in the realization of a "half-mirror" device in which the wave function is equallydistributed between two edge states. By using the recursive Green function method, the experiment was successfully reproduced. A Mach-Zehnder (MZ) interferometer consisting of such half mirrors showed high visibility of over 60%. Moreover,the coherence length of over 0.6 mm is an order of magnitude compared to MZ interferometers using ordinary edge states. Thissurprisingly high coherence is attributed to the closeness of the two edge states.
1.

Joule heating and the thermal conductivity of a two-dimensional electron gas at cryogenic temperatures studied bymodified 3ω method: A. Endo, S. Katsumoto and Y. Iye, Journal of Applied Physics 132, 104302 (2022).

2.

Anisotropic Behavior of the Thermoelectric Power and the Thermal Conductivity in a Unidirectional Lateral Superlattice: A Typical Anisotropic System Exhibiting Two Distinct Nernst Coefficients: A. Endo, S. Katsumoto and Y. Iye, J.
Phys. Soc. Jpn. 92, 044705 (2023).

3.

Half-Mirror for Electrons in Quantum Hall Copropagating Edge Channels in a Mach-Zehnder Interferometer: T.
Shimizu, J.-I. Ohe, A. Endo, T. Nakamura and S. Katsumoto, Phys. Rev. Applied 19, 034085 (2023).

Otani group
This year, our research on antiferromagnetic spintronics advanced as we successfully manipulated the cluster magnetic octupole
state in M3X (X=Mn or Sn) thin films and achieved complete switching of the state using epitaxial thin films through spinorbit torque. We also explored the spin Hall effect in the Weyl ferromagnet Co2MnGa and identified that the anomalous Nernst
effect could contribute up to 75% of the total measured signal. Additionally, we investigated efficient pattern recognition withneuromorphic computing by utilizing the magnetic field-induced dynamics of skyrmions. Our research extended to magnonphonon coupling as well, where we developed a theoretical formulation for the interaction between surface acoustic waves andspin waves in ferromagnetic thin films. Furthermore, we observed intriguing behaviors in voltage signals under out-of-plane† Joint research with outside partners.

ISSP Activity Report 202267

external magnetic fields caused by surface acoustic wave-driven ferromagnetic resonance. Our studies on molecular chirality
and metallic thin films demonstrated the chirality-induced magnetoresistance due to thermally driven spin polarization. Finally,
our international collaborative investigations uncovered thickness-dependent reconfigurable spin-wave dynamics in Ni80Fe20
nanostripe arrays. We also explored the role of spin-orbit coupling in ultrafast spin dynamics in nonmagnet/ferromagnet heterostructures. These findings offer valuable insights into the fundamental mechanisms of spintronics and pave the way for developing novel technologies and applications in this rapidly-evolving field.
1.

Efficient orbital torque in polycrystalline ferromagnetic−metal/Ru/Al2O3 stacks: Theory and experiment: L. Liao, F.
Xue, L. Han, J. Kim, R. Zhang, L. Li, J. Liu, X. Kou, C. Song, F. Pan and Y. Otani, Phys. Rev. B 105, 104434 (2022).

2.

Perspectives on spintronics with surface acoustic waves: J. Puebla, Y. Hwang, S. Maekawa and Y. Otani, Appl. Phys.
Lett. 120, 220502 (2022).

3.

*Chirality-Induced Magnetoresistance Due to Thermally Driven Spin Polarization: K. Kondou, M. Shiga, S. Sakamoto,4.

*Perpendicular full switching of chiral antiferromagnetic order by current: T. Higo, K. Kondou, T. Nomoto, M. Shiga, S.

5.

Pattern recognition with neuromorphic computing using magnetic field–induced dynamics of skyrmions: T. Yokouchi,
S. Sugimoto, B. Rana, S. Seki, N. Ogawa, Y. Shiomi, S. Kasai and Y. Otani, Sci. Adv. 8, eabq5652 (2022).

6.

*Determination of spin Hall angle in the Weyl ferromagnet Co MnGa by taking into account the thermoelectric contri2

H. Inuzuka, A. Nihonyanagi, F. Araoka, M. Kobayashi, S. Miwa, D. Miyajima and Y. Otani, J. Am. Chem. Soc. 144,
7302-7307 (2022).
Sakamoto, X. Chen, D. Nishio-Hamane, R. Arita, Y. Otani, S. Miwa and S. Nakatsuji, Nature 607, 474-479 (2022).

butions: H. Isshiki, Z. Zhu, H. Mizuno, R. Uesugi, T. Higo, S. Nakatsuji and Y. Otani, Phys. Rev. Materials 6, 084411(2022).

7.

Interaction between surface acoustic waves and spin waves in a ferromagnetic thin film: K. Yamamoto, M. Xu, J.
Puebla, Y. Otani and S. Maekawa, Journal of Magnetism and Magnetic Materials 545, 168672 (2022).

8.

Orbital angular momentum for spintronics: J. Kim and Y. Otani, Journal of Magnetism and Magnetic Materials 563,
169974 (2022).

9.

Electric field induced parametric excitation of exchange magnons in a CoFeB/MgO junction: A. Deka, B. Rana, R.
Anami, K. Miura, H. Takahashi, Y. Otani and Y. Fukuma, Phys. Rev. Research 4, 023139 (2022).

10. Efficient and controllable magnetization switching induced by intermixing-enhanced bulk spin–orbit torque in ferromagnetic multilayers: K. Zhang, L. Chen, Y. Zhang, B. Hong, Y. He, K. Lin, Z. Zhang, Z. Zheng, X. Feng, Y. Zhang, Y.
Otani and W. Zhao, Applied Physics Reviews 9, 011407 (2022).
11. Thickness-Dependent Reconfigurable Spin-Wave Dynamics in Ni80Fe20 Nanostripe Arrays: P. K. Pal, S. Sahoo, K.
Dutta, A. Barman, S. Barman and Y. Otani, Adv Materials Inter 9, 2201333 (2022).
12. Voltage Signals Caused by Surface Acoustic Wave Driven Ferromagnetic Resonance Under Out-of-Plane External
Fields: Y. Hwang, J. Puebla, K. Kondou and Y. Otani, Adv Materials Inter 9, 2201432 (2022).
13. Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light–matter coupling:
T. P. Lyons, D. J. Gillard, C. Leblanc, J. Puebla, D. D. Solnyshkov, L. Klompmaker, I. A. Akimov, C. Louca, P. Muduli,
A. Genco, M. Bayer, Y. Otani, G. Malpuech and A. I. Tartakovskii, Nat. Photon. 16, 632 (2022).
14. Role of Spin–Orbit Coupling on Ultrafast Spin Dynamics in Nonmagnet/Ferromagnet Heterostructures: S. N. Panda, B.
Rana, Y. Otani and A. Barman, Adv Quantum Tech 5, 2200016 (2022).
15. *High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy: N. Budai, H. Isshiki, R. Uesugi, Z. Zhu, T. Higo, S. Nakatsuji and Y. Otani, Appl. Phys. Lett. 122, 102401 (2023).
16. *Temperature-induced anomalous magnetotransport in the Weyl semimetal Mn3Ge: M. Wu, K. Kondou, T. Chen, S.
Nakatsuji and Y. Otani, AIP Advances 13, 045102 (2023).
17. Emergence of spin–charge conversion functionalities due to spatial and time-reversal asymmetries and chiral symmetry:
K. Kondou and Y. Otani, Front. Phys. 11, 1140286 (2023).

Hasegawa group
Disorder-induced superconductor-insulator transition (SIT) in the two-dimensional (2D) systems has been a subject of extensive
studies as one of the quantum phase transitions (QPT). Recent advancements in the fabrication of highly crystalline 2D system
revealed the presence of anomalous metallic state and quantum Griffiths phase around QPT. The origins of such new phases are* Joint research among groups within ISSP.

68

ISSP Activity Report 2022

still under debate partly because of lack of microscopic understanding. In 2022, we performed scanning tunnelling spectroscopy(STM) on highly-crystalline Pb monoatomic-layer superconductors formed on vicinal substrates with various miscut angles
to investigate these phases microscopically and to reveal how their presences are affected by the introduction of disorder. Our
results revealed the presence of stable vortices in the regime of the quantum metallic state. The vortex liquid phase, which was
expected in the metallic regime, was observed in a small portion of the regime only on vicinal substrates, suggesting that themetallic resistance is driven by infinitesimal current in the transport measurements. A pseudogap was also observed above thecritical magnetic fields presumably due to the localization of the Cooper pairs induced by quantum fluctuation.
1.

†Multiband superconductivity in strongly hybridized 1T'−WTe /NbSe heterostructures: W. Tao, Z. J. Tong, A. Das,
2
2

2.

Numerical simulations for ferromagnetic resonance of nano-size island structures probed by radio-frequency scanningtunneling microscopy: Y. Sato, M. Haze, H.-H. Yang, K. Asakawa, S. Takahashi and Y. Hasegawa, Jpn. J. Appl. Phys.
61, 025001 (1-6) (2022).

3.

Squeezed Abrikosov-Josephson Vortex in Atomic-Layer Pb Superconductors Formed on Vicinal Si(111) Substrates: Y.
Sato, M. Haze, R. Nemoto, W. Qian, S. Yoshizawa, T. Uchihashi and Y. Hasegawa, Phys. Rev. Lett. 130, 106002 1-6(2023).

4.

スパースモデリングを活用した走査トンネル顕微鏡像解析 : 土師 将裕 , 吉田 靖雄 , 長谷川 幸雄 , 表面と真空 65, 78-83

D.-Q. Ho, Y. Sato, M. Haze, J. Jia, Y. Que, F. Bussolotti, K. E. Johnson Goh, B. Wang, H. Lin, A. Bansil, S. Mukherjee,
Y. Hasegawa and B. Weber, Phys. Rev. B 105, 094512 (1-14) (2022).

(2022).

Lippmaa group
We are developing a machine learning approach to the analysis of reflection high-energy electron diffraction images. The
purpose is to capture in real time, during thin film growth, the phase composition of a thin film surface. A neural network is thus
used to extract diffraction features from the diffraction patterns, followed by periodicity and intensity analysis to extract composition information. Besides inorganic thin films grown by pulsed laser deposition, we study organic molecular layer formationon the water surface and the formation of Langmuir-Blodgett films.
1.

Mechanical Tuning of Aggregated States for Conformation Control of Cyclized Binaphthyl at the Air–Water Interface:
M. Ishii, T. Mori, W. Nakanishi, J. P. Hill, H. Sakai and K. Ariga, Langmuir 38, 6481 (2022).

2.

Critical Role of Terminating Layer in Formation of 2DEG State at the LaInO3/BaSnO3 Interface: S. Kim, M. Lippmaa,
J. Lee, H. Cho, J. Kim, B. Kim and K. Char, Adv. Mater. Interfaces 9, 2201781 (1-7) (2022).

3.

Effects of shape and solute-solvent compatibility on the efficacy of chirality transfer: Nanoshapes in nematics: A.
Nemati, L. Querciagrossa, C. Callison, S. Shadpour, D. P. N. Gonçalves, T. Mori, X. Cui, R. Ai, J. Wang, C. Zannoni
and T. Hegmann, Sci. Adv. 8, eabl4385 (2022).

4.

Application of machine learning to reflection high-energy electron diffraction images for automated structural phasemapping: H. Liang, V. Stanev, A. G. Kusne, Y. Tsukahara, K. Ito, R. Takahashi, M. Lippmaa and I. Takeuchi, Phys. Rev.
Materials 6, 063805 (1-9) (2022).

5.

Coordination Amphiphile: Design of Planar-Coordinated Platinum Complexes for Monolayer Formation at an Air-Water
Interface Based on Ligand Characteristics and Molecular Topology: J. Adachi, M. Naito, S. Sugiura, N.-T. Le, S.
Nishimura, S. Huang, S. Suzuki, S. Kawamorita, N. Komiya, J. P. Hill, K. Ariga, T. Naota and T. Mori, BCSJ 95, 889(2022).

6.

Vortex Flow-controlled Circularly Polarized Luminescence of Achiral Pt(II) Complex Aggregates Assembled at the
Air-Water Interface (Small Methods 12/2022): T. Maeda, T. Mori, M. Ikeshita, S. C. Ma, G. Muller, K. Ariga and T.
Naota, Small Methods 6, 2270071 (2022).

7.

*Semiconducting Electronic Structure of the Ferromagnetic Spinel HgCr Se Revealed by Soft-X-Ray Angle-Resolved
2 48.

機械学習による意思決定とデータ解釈：物質合成パラメータの最適化と in situ 測定結果の自動解析 : 大久保 勇男 and M.
Lippmaa, 「ケモインフォマティクスにおけるデータ収集の最適化と解析手法」 5, ( 株式会社技術情報協会 , Tokyo, 2023),

Photoemission Spectroscopy: H. Tanaka, A. V. Telegin, Y. P. Sukhorukov, V. A. Golyashov, O. E. Tereshchenko, A. N.
Lavrov, T. Matsuda, R. Matsunaga, R. Akashi, M. Lippmaa, Y. Arai, S. Ideta, K. Tanaka, T. Kondo and K. Kuroda, Phys.
Rev. Lett. 130, 186402 (1-6) (2023).

359-366.

† Joint research with outside partners.

ISSP Activity Report 2022

69

Yoshinobu group
We conducted several research projects in the fiscal year 2022: (1) The surface chemistry of hydrogen, formic acid and CO2 on
Pd-Cu(111), Cu(997), Cu(977) and Pd-Cu(977) surfaces was studied by SR-PES, IRAS, HREELS and TPD. (2) The adsorption/
desorption of CH4 on Pt(997) was studied by TPD, IRAS, SR-XPS and van der Waals DFT. (3) The dry reforming process of
CH4 with CO2 on Pt(997) was studied by AP-XPS at SPring-8. (4) The reaction dynamics of CO + O -> CO2 on Pt(111) was
studied by ab-initio molecular dynamics (AIMD) with van der Waals DFT. (5) The reaction of MoS2 basal plane and the edge of
MoS2 in vacuum and under hydrogen pressure was studied by AP-XPS at SPring-8 and DFT calculations. (6) Hydrogenation of
CO2 using a hydrogen-permeable PdCu alloy membrane, and (7) The newly constructed narrow band and broad band THz pulse
system has been applied to the surface chemistry on Pt(111).
1.

*Stimulated Rayleigh Scattering Enhanced by a Longitudinal Plasma Mode in a Periodically Driven Dirac Semimetal

2.

†Substrate-Selective Intermolecular Interaction and the Molecular Self-Assemblies: 1,3,5-Tris(4-bromophenyl)benzene

Cd3As2: Y. Murotani, N. Kanda, T. N. Ikeda, T. Matsuda, M. Goyal, J. Yoshinobu, Y. Kobayashi, S. Stemmer and R.
Matsunaga, Phys. Rev. Lett. 129, 207402 (2022).
Molecules on the Ag(111) and Si(111) (√3 × √3)-Ag Surfaces: N. Tsukahara and J. Yoshinobu, Langmuir 38, 8881
(2022).

3.

Adsorption, Desorption, and Decomposition of Formic Acid on Cu(977): The Importance of Facet of the Step: W.
Osada, S. Tanaka, K. Mukai, Y. H. Choi and J. Yoshinobu, J. Phys. Chem. C 126, 8354 (2022).

4.

*Elucidation of the atomic-scale processes of dissociative adsorption and spillover of hydrogen on the single atom alloy

5.

†*Materials Science Research by Ambient Pressure X-ray Photoelectron Spectroscopy Systems at Synchrotron Radiation Facilities in Japan: Applications in Energy, Catalysis, and Sensors: S. Yamamoto, Y. Takagi, T. Koitaya, R.
Toyoshima, M. Horio, I. Matsuda, H. Kondoh, T. Yokoyama and J. Yoshinobu, Synchrotron Radiation News 35, 19-25(2022).

6.

†*Functionalization of the MoS basal plane for activation of molecular hydrogen by Pd deposition: F. Ozaki, S. Tanaka,
2

7.

†*Hydrogen absorption and diffusion behaviors in cube-shaped palladium nanoparticles revealed by ambient-pressure8.

9.

catalyst Pd/Cu(111): W. Osada, S. Tanaka, K. Mukai, M. Kawamura, Y. Choi, F. Ozaki, T. Ozaki and J. Yoshinobu,
Phys. Chem. Chem. Phys. 24, 21705-21713 (2022).

W. Osada, K. Mukai, M. Horio, T. Koitaya, S. Yamamoto, I. Matsuda and J. Yoshinobu, Applied Surface Science 593,
153313 (2022).

X-ray photoelectron spectroscopy: J. Tang, O. Seo, D. S. R. Rocabado, T. Koitaya, S. Yamamoto, Y. Nanba, C. Song,J. Kim, A. Yoshigoe, M. Koyama, S. Dekura, H. Kobayashi, H. Kitagawa, O. Sakata, I. Matsuda and J. Yoshinobu,
Applied Surface Science 587, 152797 (2022).
*Tracking Ultrafast Change of Multiterahertz Broadband Response Functions in a Photoexcited Dirac Semimetal

Cd3As2 Thin Film: N. Kanda, Y. Murotani, T. Matsuda, M. Goyal, S. Salmani-Rezaie, J. Yoshinobu, S. Stemmer and R.
Matsunaga, Nano Letters 22, 2358 (2022).
†Enhanced Rashba Splitting of Au(111) Surface States with Hydrogen-Bonded Melamine-Based Organic Framework:

R. Moue, Y. Kokubo, K. Mukai, H. Mizushima, Y. Fukushima, K. Kawaguchi, T. Kondo, A. Harasawa, J. Yoshinobu, K.
Mase, S. Shin and K. Kanai, Adv Materials Inter 9, 2201102 (2022).

10. Termination of graphene edges created by hydrogen and deuterium plasmas: T. Ochi, M. Kamada, T. Yokosawa, K.
Mukai, J. Yoshinobu and T. Matsui, Carbon 203, 727 (2023).
11. The quantitative study of methane adsorption on the Pt(997) step surface as the initial process for reforming reactions:Y. H. Choi, S. E. M. Putra, Y. Shiozawa, S. Tanaka, K. Mukai, I. Hamada, Y. Morikawa and J. Yoshinobu, Surface
Science 732, 122284 (2023).
12. †*In-Situ Electrical Detection of Methane Oxidation on Atomically Thin IrO2 Nanosheet Films Down to Room Temperature: Y. Ishihara, T. Koitaya, W. Sugimoto, S. Yamamoto, I. Matsuda, J. Yoshinobu and R. Nouchi, Advanced Materials
Interfaces (2023), accepted for publication.
13. Hydrogenomics: Efficient and Selective Hydrogenation of Stable Molecules Utilizing Three Aspects of Hydrogen: K.
Fukutani, J. Yoshinobu, M. Yamauchi, T. Shima and S. Orimo, Catal Lett 152, 1583 (2022).
14. “ 水素 " を使いこなすためのサイエンス ハイドロジェノミクス : 折茂 慎一 , 福谷 克之 , 藤田健 一（編）, ( 共立出版 , 東京都
文京区 , 2022).

* Joint research among groups within ISSP.

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ISSP Activity Report 2022

Functional Materials Group
Akiyama group
In 2022, we studied ultra-fast gain-switching in 30GHz-modulation-bandwidth 1270nm DFB-type single-mode laser diodes(LDs) with and without chirp compensation, and realized gain-switched 5.3 ps short pulses near the Fourier transform limit. We
made processing twice in a year on gain-switched 1030-1060nm InGaAs LDs with revised designs and procedures, and installed
them into our original 10 ps LD-seed-pulse prototype modules. We studied on heat-recovery (HERC) solar cells, in collaboration with AIST team, and found output-power equivalence of two- and four-terminal photovoltaic-thermoelectric hybrid
tandems. Time-resolved resonant Raman spectroscopy on channel rhodopsin with semiconductor-laser-based light sources has
been performed in collaboration with Inoue-group within ISSP, and the first collaboration journal paper on this subject was
accomplished. Collaboration work and papers with Hiyama-team in Gunma University were accomplished on quantitative
spectroscopy on bioluminescence quantum yield of new luciferin analogs and on photo-cleavage/photo-bleaching quantum
yields of D-luciferin and coumarin-caged-luciferins.
1.

Theoretical modeling and ultra-thin design for multi-junction solar cells with a light-trapping front surface and its application to InGaP/GaAs/InGaAs 3-junction: L. Zhu, Y. Wang, X. Pan and H. Akiyama, Opt. Express 30, 35202 (2022).

2.

Diagnosis and Breakeven Analysis of GaInNAs Subcell Incorporated in Monolithic Lattice-Matched Five-Junction
Solar Cell: L. Zhu, S. Huang and H. Akiyama, IEEE J. Photovoltaics 12, 1487 (2022).

3.

Differences in radiation damage to carrier lifetimes in the neutral and depletion regions of InGaP and GaAs solar cells:
T. Nakamura, M. Imaizumi, S.-I. Sato, T. Ohshima, H. Akiyama and Y. Okada, Journal of Applied Physics 132, 115701(2022).

4.

Gain-switching in CsPbBr3 microwire lasers: J. Tian, G. Weng, Y. Liu, S. Chen, F. Cao, C. Zhao, X. Hu, X. Luo, J. Chu,
H. Akiyama and S. Chen, Commun Phys 5, 160 (2022).

5.

†Photo-bleaching of firefly luciferin with UV irradiation: R. Kumagai, R. Ono, H. Akiyama, H. Itabashi and M. Hiyama,

6.

A new lock-in amplifier-based deep-level transient spectroscopy test and measurement system for solar cells: Y. Jia,
X. Ding, R. Wang, Y. Wang, S. Zheng, X. Hu, G. Weng, S. Chen, T. Sakurai and H. Akiyama, Solar Energy 244, 507(2022).

7.

Carrier dynamics of AlGaAs/AlAs asymmetric double quantum wells with different barrier thickness: Y. Liu, G. Weng,
F. Cao, Y. Wang, W. Wan, C. Wang, H. Nakamae, C. Kim, X. Hu, X. Luo, S. Luo, S. Chen, J. Chu and H. Akiyama, Opt.
Mater. Express 12, 1291 (2022).

8.

Defect-induced current coupling in multi-junction solar cells revealed by absolute electroluminescence imaging: Y.
Wang, L. Li, Y. Jia, X. Hu, G. Weng, X. Luo, S. Chen, Z. Zhu, J. Chu and H. Akiyama, Progress in Photovoltaics 30,
1410 (2022).

9.

Revealing Sub-Cell Degradation of Multi-Junction Solar Cells by Absolute Electroluminescence Imaging: Y. Wang, L.
Li, X. Hu, Y. Jia, G. Weng, X. Luo, S. Chen and H. Akiyama, Proc. of 2022 IEEE 49th Photovoltaics Specialists Conference 54, 0468-0471 (2022).

Chemical Physics Letters 792, 139414 (2022).

10. *Shear-strain controlled high-harmonic generation in graphene: T. Tamaya, H. Akiyama and T. Kato, Phys. Rev. B 107,
L081405 (2023).
11. Output-power equivalence of two- and four-terminal photovoltaic-thermoelectric hybrid tandems: J. Sakuma, K.
Kamide, T. Mochizuki, H. Takato and H. Akiyama, Appl. Phys. Express 16, 014003 (2023).
12. Optimisation of Sb2S3 thin-film solar cells via Sb2Se3 post-treatment: R. Wang, D. Qin, X. Ding, Q. Zhang, Y. Wang, Y.
Pan, G. Weng, X. Hu, J. Tao, J. Chu, H. Akiyama and S. Chen, Journal of Power Sources 556, 232451 (2023).
13. †Photo-cleaving and photo-bleaching quantum yields of coumarin-caged luciferin: R. Kumagai, R. Ono, S. Sakimoto, C.
Suzuki, K.-I. Kanno, H. Aoyama, J. Usukura, M. Kobayashi, H. Akiyama, H. Itabashi and M. Hiyama, Journal of Photochemistry and Photobiology A: Chemistry 434, 114230 (2023).
14. †Quantum yield of near-infrared bioluminescence with firefly luciferin analog: AkaLumine: R. Ono, K. Osawa, Y.
Takahashi, Y. Noguchi, N. Kitada, R. Saito-Moriya, T. Hirano, S. A. Maki, K. Shibata, H. Akiyama, K.-I. Kanno, H.
Itabashi and M. Hiyama, Journal of Photochemistry and Photobiology A: Chemistry 434, 114270 (2023).

† Joint research with outside partners.

ISSP Activity Report 2022

71

Sugino group
We have developed the exchange-correlation functional of the density functional theory for solids based on machine learning.
We also studied activity of the oxygen reduction reaction occurring on the defective zirconia electrode. We further studied thecuprate superconductor using an advanced exchange-correlation functional. We also did collaborating works on the many-bodygreens function method, a topological material, and so on.
1.

†Development of the Bethe-Salpeter method considering second-order corrections for a GW electron-hole interaction

2.

†*Homotopic analysis of quantum states in two-dimensional polymorphs by a herringbone lattice model: Y. Ando, X.

kernel: S. Yamada, Y. Noguchi, K. Ishii, D. Hirose, O. Sugino and K. Ohno, Phys. Rev. B 106, 045113 (2022).

Zhang, Y. Tsujikawa, Y. Sato, M. Horio, J. Haruyama, O. Sugino, T. Kondo and I. Matsuda, Phys. Rev. B 106, 195106(2022).

3.

†Effect of Nitrogen Doping and Oxygen Vacancy on the Oxygen Reduction Reaction on the Tetragonal Zirconia(101)4.

First-principles electronic structure investigation of HgBa2Can −1CunO2n+2+x with the SCAN density functional: A. N.
Tatan, J. Haruyama and O. Sugino, AIP Advances 12, 105308 (2022).

5.

†Machine-learning-based exchange correlation functional with physical asymptotic constraints: R. Nagai, R. Akashi and6.

†Surface facet dependence of Ru and Ru-based alloy oxidation resistance using ab initio thermodynamics calculation: S.

Surface: S. Muhammady, J. Haruyama, S. Kasamatsu and O. Sugino, J. Phys. Chem. C 126, 15662 (2022).

O. Sugino, Phys. Rev. Research 4, 013106 (2022).

M. Aspera, E. F. Arguelles, R. L. Arevalo, B. Chantaramolee, H. Nakanishi and H. Kasai, Surface Science 724, 122129(2022).

7.

†Roadmap on Machine Learning in Electronic Structure: R. Nagai, R. Akashi and O. Sugino, Electron. Struct. 1, 37-38

8.

†*Suppression of atomic displacive excitation in photo-induced A(2022).

1g phonon mode of bismuth unveiled by low-temperature time-resolved x-ray diffraction: Y. Kubota, Y. Tanaka, T. Togashi, T. Ebisu, K. Tamasaku, H. Osawa, T. Wada, O.
Sugino, I. Matsuda and M. Yabashi, Appl. Phys. Lett. 122, 092201 (2023).

Oka groupOka group has worked on Nonequilibrium quantum materials including Floquet engineering of Dirac semimetals, spin systems,
and many-body systems.
1.

Magnetic Hedgehog Lattice in a Centrosymmetric Cubic Metal: S. Okumura, S. Hayami, Y. Kato and Y. Motome, J.
Phys. Soc. Jpn. 91, 093702 (2022).

2.

Lindbladian dynamics of the Sachdev-Ye-Kitaev model: A. Kulkarni, T. Numasawa and S. Ryu, Phys. Rev. B 106,
075138 (2022).

3.

Phase degree of freedom and topology in multiple-Q spin textures: K. Shimizu, S. Okumura, Y. Kato and Y. Motome,
Phys. Rev. B 105, 224405 (2022).

4.

Microwave Dynamical Conductivity in the Quantum Hall Regime: T. Arakawa, T. Oka, S. Kon and Y. Niimi, Phys. Rev.
Lett. 129, 046801 (2022).

5.

Confinement phase in carbon-nanotubes and the extended massive Schwinger model: T. Oka, J. Phys. A: Math. Theor.
55, 504001 (2022).

6.

Universal dynamics of heavy operators in boundary CFT2: T. Numasawa and I. Tsiares, J. High Energ. Phys. 2022, 156(2022).

7.

Four coupled SYK models and nearly AdS2 gravities: phase transitions in traversable wormholes and in bra-ket
wormholes: T. Numasawa, Class.Quant.Grav. 398, 04001 (2022).

8.

Mott memristors based on field-induced carrier avalanche multiplication: F. Peronaci, S. Ameli, S. Takayoshi, A. S.
Landsman and T. Oka, Phys. Rev. B 107, 075154 (2023).

Inoue group
In 2022, we reported the first three-dimensional structure of PspR, which is a light-driven outward H+ pump without the typical* Joint research among groups within ISSP.

72

ISSP Activity Report 2022

cytoplasmic H+ donor, by X-ray crystallography. A new type of outward H+ pumping rhodopsins (SacR) was found from
Saccharibacteria, a lineage of candidate phyla radiation (CPR). Interestingly, SacR has a fenestration close to the head groupof the retinal chromophore in the protein body. We revealed exogenous retinal is taken up into the protein body through thisfenestration. Moreover, a new microbial rhodopsin class fused with a bestrophin channel, named Bestrhodopsin, was discoveredfrom diverse algae. The ion flux through the pore in the bestrophin part is regulated by surrounding rhodopsin parts in a lightdependent manner. Interestingly, bestrhodopsin exhibits pure all-trans-to-11-cis isomerization which was not known for microbial rhodopsins but is typical among animal rhodopsins. The kinetic study of schizorhodopsin (SzR) revealed that the kinetic
isotope effect of many photo intermediate-conversion processes involving retinal deprotonation and reprotonation and activation enthalpy and entropy are much lower than that of other microbial rhodopsins. The photoreaction cycle of a new channelrhodopsin, ChRmine was also reported.
1.

Structural characterization of proton-pumping rhodopsin lacking a cytoplasmic proton donor residue by X-ray crystallography: K. Suzuki, M. D. C. Marín, M. Konno, R. Bagherzadeh, T. Murata and K. Inoue, J. Biol. Chem. 298, 101722(2022).

2.

Diverse heliorhodopsins detected via functional metagenomics in freshwater Actinobacteria , Chloroflexi and Archaea:
A. Chazan, A. Rozenberg, K. Mannen, T. Nagata, R. Tahan, S. Yaish, S. Larom, K. Inoue, O. Béjà and A. Pushkarev,
Environmental Microbiology 24, 110-121 (2022).

3.

Saccharibacteria harness light energy using type-1 rhodopsins that may rely on retinal sourced from microbial hosts: A.
L. Jaffe, M. Konno, Y. Kawasaki, C. Kataoka, O. Béjà, H. Kandori, K. Inoue and J. F. Banfield, ISME J, published on
the web (2022).

4.

Rhodopsin-bestrophin fusion proteins from unicellular algae form gigantic pentameric ion channels: A. Rozenberg, I.
Kaczmarczyk, D. Matzov, J. Vierock, T. Nagata, M. Sugiura, K. Katayama, Y. Kawasaki, M. Konno, Y. Nagasaka, M.
Aoyama, I. Das, E. Pahima, J. Church, S. Adam, V. A. Borin, A. Chazan, S. Augustin, J. Wietek, J. Dine, Y. Peleg, A.
Kawanabe, Y. Fujiwara, O. Yizhar, M. Sheves, I. Schapiro, Y. Furutani, H. Kandori, K. Inoue, P. Hegemann, O. Béjà and
M. Shalev-Benami, Nat. Struct. Mol. Biol. 29, 592-603 (2022).

5.

Kinetic study on the molecular mechanism of light-driven inward proton transport by schizorhodopsins: Y. Kawasaki,
M. Konno and K. Inoue, Biochimica et Biophysica Acta (BBA) - Biomembranes published on the web, 184016 (2022).

6.

Structural basis for channel conduction in the pump-like channelrhodopsin ChRmine: K. E. Kishi, Y. S. Kim, M.
Fukuda, M. Inoue, T. Kusakizako, P. Y. Wang, C. Ramakrishnan, E. F. X. Byrne, E. Thadhani, J. M. Paggi, T. E. Matsui,
K. Yamashita, T. Nagata, M. Konno, S. Quirin, M. Lo, T. Benster, T. Uemura, K. Liu, M. Shibata, N. Nomura, S. Iwata,
O. Nureki, R. O. Dror, K. Inoue, K. Deisseroth and H. E. Kato, Cell 185, 672 (2022).

7.

Converting a Natural-Light-Driven Outward Proton Pump Rhodopsin into an Artificial Inward Proton Pump: M. D. C.
Marín, M. Konno, H. Yawo and K. Inoue, J. Am. Chem. Soc. TBA, jacs.2c12602 (2023).

8.

Twisting and Protonation of Retinal Chromophore Regulate Channel Gating of Channelrhodopsin C1C2: K. Shibata,K. Oda, T. Nishizawa, Y. Hazama, R. Ono, S. Takaramoto, R. Bagherzadeh, H. Yawo, O. Nureki, K. Inoue and H.
Akiyama, J. Am. Chem. Soc. TBA, jacs.3c01879 (2023).

9.

Phototrophy by antenna-containing rhodopsin pumps in aquatic environments: A. Chazan, I. Das, T. Fujiwara, S.
Murakoshi, A. Rozenberg, A. Molina-Márquez, F. K. Sano, T. Tanaka, P. Gómez-Villegas, S. Larom, A. Pushkarev, P.
Malakar, M. Hasegawa, Y. Tsukamoto, T. Ishizuka, M. Konno, T. Nagata, Y. Mizuno, K. Katayama, R. Abe-Yoshizumi,
S. Ruhman, K. Inoue, H. Kandori, R. León, W. Shihoya, S. Yoshizawa, M. Sheves, O. Nureki and O. Béjà, Nature 615,535-540 (2023).

10. Difference FTIR Spectroscopy of Jumping Spider Rhodopsin-1 at 77 K: S. Hanai, T. Nagata, K. Katayama, S. Inukai,
M. Koyanagi, K. Inoue, A. Terakita and H. Kandori, Biochemistry 62, 1347-1359 (2023).
11. Reversible Photoreaction of a Retinal Photoisomerase, Retinal G-Protein-Coupled Receptor RGR: N. Morimoto, T.
Nagata and K. Inoue, Biochemistry 62, 1429-1432 (2023).
12. Time-resolved detection of light-induced conformational changes of heliorhodopsin: Y. Nakasone, Y. Kawasaki, M.
Konno, K. Inoue and M. Terazima, Phys. Chem. Chem. Phys. 25, 12833-12840 (2023).
13. Biophysical characterization of microbial rhodopsins with DSE motif: M. D. C. Marín, A. L. Jaffe, P. T. West, M.
Konno, J. F. Banfield and K. Inoue, Biophys. Physicobiol. 20, e201023 (2023).
14. Protein dynamics of a light-driven Na+ pump rhodopsin probed using a tryptophan residue near the retinal chromophore: A. Otomo, M. Mizuno, K. Inoue, H. Kandori and Y. Mizutani, Biophysics. Physicobiol. 20, e201016 (2023).
15. Characterization of retinal chromophore and protonated Schiff base in Thermoplasmatales archaeon heliorhodopsin
using solid-state NMR spectroscopy: S. Suzuki, S. Kumagai, T. Nagashima, T. Yamazaki, T. Okitsu, A. Wada, A. Naito,† Joint research with outside partners.

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73

K. Katayama, K. Inoue, H. Kandori and I. Kawamura, Biophysical Chemistry 296, 106991 (2023).
16. ロドプシンを用いたオプトジェネティクスの最前線 : 井上 圭一 , 生物工学会誌 100, 420-424 (2022).
17. 特集によせて ―Mehr Licht !―: 井上 圭一 , 生物工学会誌 100, 354 (2022).
18. アスガルドアーキアの持つ光受容膜タンパク質ロドプシン : 井上 圭一 , 極限環境生物学会誌 22, 13-23 (2022).
19. ロドプシンを用いた光受容と新奇シゾロドプシンファミリー : 井上 圭一 ,「未培養微生物研究の最新動向」, 青柳 秀紀 , ( シーエムシー出版 , 2023), 74-81.

Quantum Materials Group
Oshikawa group
Ballistic transport can be characterized by Drude weight, which is given by Kohn formula. Recently, we have generalized theKohn formula to all orders of the nonlinear conductivity. However, the nonlinear Drude weights obtained by the generalized
Kohn formula often diverge in the thermodynamic limit. In order to clarify this remarkable behavior, we have studied ballistictransport and its characterizations in a very simple system of the one-dimensional tight-binding model with a single defect. We
showed that, even in this simple model, we can observe the divergence of nonlinear Drude weights. We emphasize that these
nonlinear Drude weights are obtained by the generalized Kohn formula, which corresponds to the adiabatic limit for a given
system size. As a resolution, we demonstrated that, by taking the thermodynamic limit before the adiabatic limit, low-frequency
contributions merge into the Drude weight, which does not diverge. The result also does not depend on the impurity strength,
thus characterizes the ballistic transport in the bulk. We propose to distinguish the Drude weight obtained by taking the thermodynamic limit first as "bulk Drude weight", and the Drude weight given by the Kohn formula, which corresponds to taking theadiabatic limit first, as "Kohn Drude weight". While the potential issue of the order of limits has been sometimes discussed
within the linear response, the discrepancy between the two limits is amplified in nonlinear Drude weights.
1.

Boson-fermion duality with subsystem symmetry: W. Cao, M. Yamazaki and Y. Zheng, Phys. Rev. B 106, 075150(2022).

2.

Duality viewpoint of criticality: L. Li and Y. Yao, Phys. Rev. B 106, 224420 (2022).

3.

Absence versus Presence of Dissipative Quantum Phase Transition in Josephson Junctions: K. Masuki, H. Sudo, M.
Oshikawa and Y. Ashida, Phys. Rev. Lett. 129, 087001 (2022).

4.

Gappability Index for Quantum Many-Body Systems: Y. Yao, M. Oshikawa and A. Furusaki, Phys. Rev. Lett. 129,017204 (2022).

5.

Kramers-Wannier-like Duality Defects in (3+1)D Gauge Theories: J. Kaidi, K. Ohmori and Y. Zheng, Phys. Rev. Lett.
128, 111601 (2022).

6.

Tensor network renormalization study on the crossover in classical Heisenberg and RP2 models in two dimensions: A.
Ueda and M. Oshikawa, Phys. Rev. E 106, 014104 (2022).

7.

Fracton topological order at finite temperature: X. Shen, Z. Wu, L. Li, Z. Qin and H. Yao, Phys. Rev. Research 4,
L032008 (2022).

8.

Non-invertible symmetries of N = 4 SYM and twisted compactification.: J. Kaidi, G. Zafrir and Y. Zheng, J. HighEnerg. Phys. 2022, 53 (2022).

9.

On lattice models of gapped phases with fusion category symmetries: K. Inamura, J. High Energ. Phys. 2022, 36 (2022).

10. Topology and Edge State Meet an Exact Solution for Nonlinear Electric Circuits: M. Oshikawa, JPSJ News Comments
19, 06 (2022).
11. Differentiable Programming of Isometric Tensor Networks: C. Geng, H.-Y. Hu and Y. Zou, Machine Learning: Scienceand Technology 3, 015020 (2022).
12. The mishandling of scientifically flawed articles about radiation exposure, retracted for ethical reasons, impedes
understanding of the scientific issues pointed out by Letters to the Editor: Y. Tanimoto, Y. Hamaoka, K. Kageura, S.
Kurokawa, J. Makino and M. Oshikawa, Journal of Scientific Practice and Integrity 2022, 38474 (2022).
13. Drude weights in one-dimensional systems with a single defect: K. Takasan, M. Oshikawa and H. Watanabe, Phys. Rev.
* Joint research among groups within ISSP.

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B 107, 075141 (2023).
14. Duality, criticality, anomaly, and topology in quantum spin-1 chains: H. Yang, L. Li, K. Okunishi and H. Katsura, Phys.
Rev. B 107, 125158 (2023).

Nakatsuji group
The myths of quantum mechanics render electronic, magnetic, and optical properties in materials that defy common sense while
inspiring future technologies. Through decades of effort, researchers studying quantum materials have uncovered a wealth offascinating properties, ranging from superconductivity that allows electric current to flow without any resistance to topological insulators whose surface states serve as superhighways for electrons to flow freely. Discoveries in the field of quantum
materials offer a central thread linking the previously disparate fields, like condensed matter physics, high-energy physics,
quantum computing, and cosmology. Moreover, the functionalities of quantum materials provide the basis for emerging transformational technologies, such as antiferromagnetic memory. Our vision is to lead the quest for functional quantum materials tobear a groundbreaking impact on fundamental science and benefit humanity in the future. The main research topics in our groupare (1) Quantum transport in topological materials; (2) Coherent quantum transport in antiferromagnetic spintronics; (3) Strange
metal and exotic superconductivity in strongly correlated electron systems; (4) Long-range quantum entanglement in topologically ordered states.
1.

Phonon spectrum of Pr2Zr2O7 and Pr2Ir2O7 as evidence of coupling of the lattice with electronic and magnetic degrees
of freedom: Y. Xu, H. Man, N. Tang, T. Ohtsuki, S. Baidya, S. Nakatsuji, D. Vanderbilt and N. Drichko, Phys. Rev. B
105, 075137 (2022).

2.

Pressure-induced changes of valence fluctuation in β-YbAlB4 probed by x-ray absorption spectroscopy: Y. Sakaguchi,
S. Ikeda, N. K. M. Mizumaki, K. Kuga, S. S. K. Sone, S. Nakatsuji and H. Kobayashi, Phys. Rev. B 105, 155129(2022).

3.

Superconducting properties of the A15 structure compound V3Ge: E. Ahmed, K. Kobayashi, N. Arakawa, Y. Okubo, A.
Sakai, S. Nakatsuji, A. Iyo and T. Ebihara, Physica C 602, 1354140 (2022).

4.

*Perpendicular full switching of chiral antiferromagnetic order by current: T. Higo, K. Kondou, T. Nomoto, M. Shiga, S.

5.

Large Anomalous Nernst Effect and Nodal Plane in an Iron-based Kagome Ferromagnet: T. Chen, S. Minami, A. Sakai,
Y. Wang, Z. Feng, T. Nomoto, M. Hirayama, R. Ishii, T. Koretsune, R. Arita and S. Nakatsuji, Science Advances 8, 1480
(2022).

6.

*Determination of spin Hall angle in the Weyl ferromagnet Co MnGa by taking into account the thermoelectric contri2

Sakamoto, X. Chen, D. Nishio-Hamane, R. Arita, Y. Otani, S. Miwa and S. Nakatsuji, Nature 607, 474-479 (2022).

butions: H. Isshiki, Z. Zhu, H. Mizuno, R. Uesugi, T. Higo, S. Nakatsuji and Y. Otani, Phys. Rev. Materials 6, 084411(2022).

7.

Topological magnets—their basic science and potential applications: S. Nakatsuji, AAPPS Bulletin 32-25, 1-13 (2022).

8.

Piezomagnetic switching of anomalous Hall effect in an antiferromagnet at room temperature: M. Ikhlas, S. Dasgupta,
F. Theuss, T. Higo, S. Kittaka, B. J. Ramshaw, O. Tchernyshyov, C. W. Hicks and S. Nakatsuji, Nature Physics 18, 1-12(2022).

9.

Anisotropy-driven quantum criticality in an intermediate valence system: M. S. Grbic, E. C. T. O'Farrell, Y. Matsumoto,K. Kuga, M. Brando, R. Küchler, A. H. Nevidomskyy, M. Yoshida, T. Sakakibara, Y. Kono, Y. Shimura, M. L. Sutherland and M. T. &. S. Nakatsuji, Nature Communications 13, 2141 (2022).

10. Magnetic field tuning of the valley population in the Weyl phase of Nd2Ir2O7: I. Kapon, C. W. Rischau, B. Michon, K.
Wang, B. Xu, Q. Yang, S. Nakatsuji and D. van der Marel, Physical Review Research 4, 023056 (2022).
11. Ferrimagnetic compensation and its thickness dependence in TbFeCo alloy thin films: M. Ishibashi, K. Yakushiji, M.
Kawaguchi, A. Tsukamoto, S. Nakatsuji and M. Hayashi, Applied Physics Letters 120, 022405-1 and 4 (2022).
12. Topological Magnets: Functions Based on Berry Phase and Multipoles: S. Nakatsuji and R. Arita, Annu. Rev. Condens.
Matter Phys. 13, annurev-conmatphys-031620-103859 (2022).
13. Anomalous Hall antiferromagnets: L. Smejkal, A.-H. MacDonald, J. Sinova, S. Nakatsuji and T. Jungwith, Nature
Review Materials 7, 482–496 (2022).
14. *Ultrafast Dynamics of Intrinsic Anomalous Hall Effect in the Topological Antiferromagnet Mn3Sn: T. Matsuda, T.
Higo, T. Koretsune, N. Kanda, Y. Hirai, H. Peng, T. Matsuo, N. Yoshikawa, R. Shimano, S. Nakatsuji and R. Matsunaga,
Phys. Rev. Lett. 130, 126302 (2023).
† Joint research with outside partners.

ISSP Activity Report 202275

15. *High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy: N. Budai, H. Isshiki, R. Uesugi, Z. Zhu, T. Higo, S. Nakatsuji and Y. Otani, Appl. Phys. Lett. 122, 102401 (2023).
16. *Octupole-driven magnetoresistance in an antiferromagnetic tunnel junction: X. Chen, T. Higo, K. Tanaka, T. Nomoto,
H. Tsai, H. Idzuchi, M. Shiga, S. Sakamoto, R. Ando, H. Kosaki, T. Matsuo, D. Nishio-Hamane, R. Arita, S. Miwa and
S. Nakatsuji, Nature 613, 490-495 (2023).
17. *Temperature-induced anomalous magnetotransport in the Weyl semimetal Mn3Ge: M. Wu, K. Kondou, T. Chen, S.
Nakatsuji and Y. Otani, AIP Advances 13, 045102 (2023).
18. Anomalous Hall Effect in Nanoscale Structures of the Antiferromagnetic Weyl Semimetal Mn3Sn at Room Temperature:
T. Matsuo, T. Higo, D. Nishio-Hamane and S. Nakatsuji, Jpn. J. Appl. Phys. (2022), in print.

Miwa group
We have studied the following topics this year: (1) Spin-torque control of chiral antiferromagnet Mn3Sn, (2) Chirality-induced
spin selectivity with no net current, and (3) x-ray magnetic circular dichroism on a magnetic interface. In topic (1), we find thatcurrent-induced full switching of octupole polarization by using strained Mn3Sn thin film (Nature 607, 404). This is a work incollaboration with Nakatsuji and Otani groups. In topic (2), we find that chiral molecule at the interface with metal possesses
thermally-driven broken time-reversal symmetry. This is a work in collaboration with Otani group (J. Am. Chem. Soc. 144,
7302). In topic (3), we find that electron correlation is a key to understanding interfacial magnetic anisotropy at Fe/MgO interface (ACS Appl. Electron. Mater. 4, 1794).
1.

Control of perpendicular magnetic anisotropy at the Fe/MgO interface by phthalocyanine insertion: S. Sakamoto, E.
Jackson, T. Kawabe, T. Tsukahara, Y. Kotani, K. Toyoki, E. Minamitani, Y. Miura, T. Nakamura, A. Hirohata and S.
Miwa, Phys. Rev. B 105, 184414 (1-6) (2022).

2.

Origin of enhanced interfacial perpendicular magnetic anisotropy in LiF-inserted Fe/MgO interface: S. Sakamoto, T.
Nozaki, S. Yuasa, K. Amemiya and S. Miwa, Phys. Rev. B 106, 174410 (1-6) (2022).

3.

*Chirality-Induced Magnetoresistance Due to Thermally Driven Spin Polarization: K. Kondou, M. Shiga, S. Sakamoto,4.

*Perpendicular full switching of chiral antiferromagnetic order by current: T. Higo, K. Kondou, T. Nomoto, M. Shiga, S.

5.

Electron Correlation Enhances Orbital Polarization at a Ferromagnetic Metal/Insulator Interface: Depth-Resolved X-ray
Magnetic Circular Dichroism and First-Principles Study: S. Sakamoto, M. Tsujikawa, M. Shirai, K. Amemiya and S.
Miwa, ACS Appl. Electron. Mater. 4, 1794-1799 (2022).

6.

Magnetic anisotropy of Fe/MgO interfaces inserted with alkali halide layers: J. Chen, S. Sakamoto, H. Kosaki and S.
Miwa, Phys. Rev. B 107, 094420 (2023).

7.

*Octupole-driven magnetoresistance in an antiferromagnetic tunnel junction: X. Chen, T. Higo, K. Tanaka, T. Nomoto,

8.

Observation of large spin conversion anisotropy in bismuth: N. Fukumoto, R. Ohshima, M. Aoki, Y. Fuseya, M.
Matsushima, E. Shigematsu, T. Shinjo, Y. Ando, S. Sakamoto, M. Shiga, S. Miwa and M. Shiraishi, Proceedings of the
National Academy of Sciences 102, e2215030120 (2023).

9.

Weyl 反強磁性体 Mn3Sn のスピンダイナミクス : 三輪 真嗣 , 坂本 祥哉 , 飯浜 賢志 , 野本 拓也 , まぐね 17, 233-240 (2022).

H. Inuzuka, A. Nihonyanagi, F. Araoka, M. Kobayashi, S. Miwa, D. Miyajima and Y. Otani, J. Am. Chem. Soc. 144,
7302-7307 (2022).
Sakamoto, X. Chen, D. Nishio-Hamane, R. Arita, Y. Otani, S. Miwa and S. Nakatsuji, Nature 607, 474-479 (2022).

H. Tsai, H. Idzuchi, M. Shiga, S. Sakamoto, R. Ando, H. Kosaki, T. Matsuo, D. Nishio-Hamane, R. Arita, S. Miwa and
S. Nakatsuji, Nature 613, 490-495 (2023).

Division of Data-Integrated Materials Science
Fukushima group
Automatic exhaustive exploration of a large material space by high-performance supercomputers is crucial for developing new
functional materials. We demonstrated the efficiency of high-throughput calculations using the all-electron Korringa–Kohn–
Rostoker coherent potential approximation method with the density functional theory for the large material space consistingof quaternary high-entropy alloys, which are nonstoichiometric and substitutionally disordered materials. The exhaustive* Joint research among groups within ISSP.

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calculations were performed based on the AkaiKKR program package and supercomputer Fugaku, where the numerical parameters and self-consistent convergence are automatically controlled. The large material database including the total energies,
magnetization, Curie temperature, and residual resistivity was constructed by our calculations. We used frequent itemset
mining to identify the characteristics of parcels in magnetization and Curie temperature space. We also identified the elementsthat enhance the magnetization and Curie temperature and clarified the rough dependence of the elements through regression
modeling of the residual resistivity.
1.

Low-temperature acanthite-like phase of Cu2S: electronic and transport properties: H. N. Nam, K. Suzuki, T. Q.
Nguyen, A. Masago, H. Shinya, T. Fukushima and K. Sato, Phys. Rev. B 105, 075205(1-11) (2022).

2.

A first-principles study on the electrical conductivity of Ag2S1-xSex (x = 0, 0.25, 0.5): Electron-phonon coupling:
71. H. N. Nam, K. Suzuki, A. Masago, T. Q. Nguyen, H. Shinya, T. Fukushima and K. Sato, Appl. Phys. Lett. 120,
143903(1-6) (2022).

3.

Direct and inverse magnetocaloric effects in FeRh alloy: H. B. Tran, T. Fukushima, H. Momida, K. Sato, Y. Makino andT. Oguchi, Journal of Alloys and Compounds 926, 166718(1-8) (2022).

4.

*Automatic exhaustive calculations of large material space by Korringa-Kohn-Rostoker coherent potential approxima-

5.

The role of electron–phonon scattering on thermoelectric properties of intermetallic compounds XSi (X = Co, Rh):
H. N. Nam, K. Suzuki, A. Masago, H. Shinya, T. Fukushima and K. Sato, Japanese Journal of Applied Physics 62,
020904(1-6) (2023).

6.

*Physics-informed machine learning combining experiment and simulation for the design of neodymium-iron-boron

7.

半導体スピントロニクス材料のデザイン : 佐藤 和則 , 真砂 啓 , 福島 鉄也 , 新屋ひ かり ,「スピントロニクスのための計算機
ナノマテリアルデザイン」, 吉田博 , ( 内田老鶴圃 , 2022), 167-188.

tion method — Applied to equiatomic quaternary high entropy alloys: T. Fukushima, H. Akai, T. Chikyow and H. Kino,
Pays. Rev. Mater. 6, 023802(1-19) (2022).

permanent magnets with reduced critical-elements content: A. Kovacs, J. Fischbacher, H. Oezelt, A. Kornell, Q. Ali, M.
Gusenbauer, M. Yano, N. Sakuma, A. Kinoshita, T. Shoji, A. Kato, Y. Hong, S. Grenier, T. Devillers, N. Dempsey, T.
Fukushima, H. Akai, N. Kawashima, T. Miyake and T. Schrefl, Frontiers in Materials 9, 1094055(1-19) (2023).

Materials Design and Characterization Laboratory
Hiroi group
Apart from rutile, which crystallizes in the rutile-type structure characteristic of many metal dioxides, three major polymorphsof titanium dioxide (TiO2) are known: anatase, brookite, and the α-lead dioxide (α-PbO2)-type high-pressure form. Ti ions arecommonly found in octahedra composed of six oxide ions, and their crystal structures are distinguished according to the linkage
pattern of the TiO6 octahedra. Inorganic structural chemistry considers that, in the rutile and α-PbO2 types, Ti ions occupy halfof the octahedral voids in the hexagonal close packing of oxide ions, and the TiO6 octahedra in each layer are joined via edge
sharing to form linear and zigzag strands, respectively. Anatase and brookite, on the other hand, exhibit more complex threedimensional edge-sharing octahedral connections, although their origins are not fully explained. I show that these configurations can be interpreted as distinct stacking structures of layers with α-PbO2-type zigzag strands. Additionally, I characterize
the crystal structures of four TiO2 polymorphs in detail using stacking sequence descriptions based on anion close packings andexplore their relationships in terms of inorganic structural chemistry. I note that the moderate covalent nature of the Ti–O bondand the local structural instability of d0 ions result in an unusual variety of polymorphs in TiO2.
1.

Pyrochlore oxide Hg2Os2O7 on verge of metal–insulator boundary: K. Kataoka, D. Hirai, A. Koda, R. Kadono, T.
Honda and Z. Hiroi, J. Phys.: Condens. Matter 34, 135602 (2022).

2.

Successive phase transitions of the spin-orbit-coupled metal Cd2Re2O7 probed by high-resolution synchrotron x-ray
diffraction: D. Hirai, A. Fukui, H. Sagayama, T. Hasegawa and Z. Hiroi, J. Phys.: Condens. Matter 35, 035403 (2022).

3.

Dimer Crystallization Induced by Elemental Substitution in the Honeycomb Lattice of Ru1−xOsxCl3: K. Kataoka, D.
Wulferding, T. Yajima, D. Nishio-Hamane, D. Hirai, S. Lee, K.-Y. Choi and Z. Hiroi, J. Phys. Soc. Jpn. 91, 014801(2022).

4.

Unusual Resistive Transitions in the Nodal-Line Semimetallic Superconductor NaAlSi: D. Hirai, T. Ikenobe, T. Yamada,
H. Yamane and Z. Hiroi, J. Phys. Soc. Jpn. 91, 024702 (2022).

5.

Electronic states of metallic electric toroidal quadrupole order in Cd2Re2O7 determined by combining quantum oscilla† Joint research with outside partners.

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tions and electronic structure calculations: H. T. Hirose, T. Terashima, D. Hirai, Y. Matsubayashi, N. Kikugawa, D. Graf,
K. Sugii, S. Sugiura, Z. Hiroi and S. Uji, Phys. Rev. B 105, 035116 (2022).
6.

Zigzag magnetic order in the Kitaev spin-liquid candidate material RuBr3 with a honeycomb lattice: Y. Imai, K. Nawa,
Y. Shimizu, W. Yamada, H. Fujihara, T. Aoyama, R. Takahashi, D. Okuyama, T. Ohashi, M. Hagihala, S. Torii, D.
Morikawa, M. Terauchi, T. Kawamata, M. Kato, H. Gotou, M. Itoh, T. J. Sato and K. Ohgushi, Phys. Rev. B 105,
L041112 (2022).

7.

High-Pressure Synthesis of Transition-Metal Oxyhydrides with Double-Perovskite Structures: T. Yajima, K. Takahashi,
H. Nakajima, T. Honda, K. Ikeda, T. Otomo and Z. Hiroi, Inorg. Chem. 61, 2010 (2022).

8.

Inorganic Structural Chemistry of Titanium Dioxide Polymorphs: Z. Hiroi, Inorg. Chem. 61, 8393 (2022).

9.

Room temperature magnetic properties of Mn-Ga-B melt-spun ribbons: T. Saito and D. Nishio-Hamane, AIP Advances
12, 035250 (2022).

10. Thermoelectric and magnetic properties of (Fe,Co)2TiSn Heusler compounds: T. Saito, S. Kamishima and D. NishioHamane, Physica B: Condensed Matter 639, 413984 (2022).
11. †*Dimensional reduction and incommensurate dynamic correlations in the S = 1/2 triangular-lattice antiferromagnet
Ca3ReO5Cl2: S. A. Zvyagin, A. N. Ponomaryov, J. Wosnitza, D. Hirai, Z. Hiroi, M. Gen, Y. Kohama, A. Matsuo, Y. H.
Matsuda and K. Kindo, Nat Commun 13, 6310 1-6 (2022).
12. The Role of Scandium Substitution in Babingtonite Group Minerals: M. Nagashima, D. Nishio-Hamane, T. Matsumoto
and C. Fukuda, Minerals 12, 333 (2022).
13. Surface Functionalization of Non-Woven Fabrics Using a Novel Silica-Resin Coating Technology: Antiviral Treatment
of Non-Woven Fabric Filters in Surgical Masks: C. Tsutsumi-Arai, Y. Iwamiya, R. Hoshino, C. Terada-Ito, S. Sejima,
K. Akutsu-Suyama, M. Shibayama, Z. Hiroi, R. Tokuyama-Toda, R. Iwamiya, K. Ijichi, T. Chiba and K. Satomura,
IJERPH 19, 3639 (2022).
14. *Large magnetic-field-induced strains in sintered chromium tellurides: Y. Kubota, Y. Okamoto, T. Kanematsu, T.
Yajima, D. Hirai and K. Takenaka, Appl. Phys. Lett. 122, 042404 (2023).

Kawashima group
We developed efficient methods, algorithms, parallelized programs, and sometimes new concepts, based on novel numerical
techniques such as the tensor network (TN) method and quantum Monte Carlo (QMC). We then applied them to relevant
physical problems. To list subjects of our research in 2022, (1) QMC study of Bose gases [Masaki-Kato, et al., JPSJ90], (2)Study of spin liquid in frustrated spin systems [Ogino, PRB106][Ido, et al., npj QM7], (3) Effect of boundary conditions inquantum spin clusters [Eguchi et al, JPSJ91], and (4) Development of open-source applications [Okubo et al, CPC279].
1.

Energy Scale Deformation on Regular Polyhedra: T. Eguchi, S. Oga, H. Katsura, A. Gendiar and T. Nishino, J. Phys.
Soc. Jpn. 91, 034001 (2022).

2.

Universal and non-universal correction terms of Bose gases in dilute region: a quantum Monte Carlo study: A. MasakiKato, Y. Motoyama and N. Kawashima, J. Phys. Soc. Jpn. 90, 034711(1-8) (2022).

3.

Ground-state phase diagram of a spin-1/2 frustrated XXZ ladder: T. Ogino, R. Kaneko, S. Morita and S. Furukawa, Phys.
Rev. B 106, 155106 (2022).

4.

†*TeNeS: Tensor network solver for quantum lattice systems: Y. Motoyama, T. Okubo, K. Yoshimi, S. Morita, T. Katoand N. Kawashima, Computer Physics Communications 279, 108437 (2022).

5.

†*Unconventional dual 1D–2D quantum spin liquid revealed by ab initio studies on organic solids family: K. Ido, K.

6.

Cartesian Operator Factorization Method for Hydrogen: X. Lyu, C. Daniel and J. K. Freericks, Atoms 10, 14 (2022).

7.

*Data Analysis of Ab initio Effective Hamiltonians in Iron-Based Superconductors — Construction of Predictors for8.

Non-monotonic behavior of the Binder parameter in discrete spin systems: H. Watanabe, Y. Motoyama, S. Morita and
N. Kawashima, Prog. Theor. Exp. Phys. 2023, 033A02 (2023).

Yoshimi, T. Misawa and M. Imada, npj Quantum Mater. 7, 48 (2022).

Superconducting Critical Temperature: K. Ido, Y. Motoyama, K. Yoshimi and T. Misawa, J. Phys. Soc. Jpn. 92, 064702(2023).

* Joint research among groups within ISSP.

78

ISSP Activity Report 2022

Uwatoko group
We have performed polycrystalline and single-crystal neutron diffraction experiments to determine the magnetic structure underambient and high pressures on the CePtSi2. We found incommensurate magnetic peaks with a magnetic propagation vectorof (0.32,0,0.11) at ambient pressure below TSDW ~ 1.25 K, which originate from a spin-density-wave order with the easy axis
along the c axis and an averaged ordered moment of 0.45(5)μB. Applying pressures, the magnetic order disappears around 1.0
GPa, which is much lower than the critical pressure for the superconducting phase. The results suggest that other than magnetic
fluctuations, may play a primary role in the superconducting pairing mechanism. We discovered the first ternary Mn-based
superconductor KMn6Bi5 under high pressure. Bulk superconductivity emerges in the pressurized single-crystal KMn6Bi5
when its antiferromagnetic order disappears by pressure. The optimal onTc reaches ~9.3 K at 14.2 GPa, and μ0Hc2(0) is found to
exceed the Pauli paramagnetic limit. We investigated the superconductivity of (TMTTF)2TaF6 (TMTTF: tetramethyl-tetrathiafulvalene) by conducting resistivity measurements under high pressure up to 8 GPa. A superconducting state in (TMTTF)2TaF6
emerged after a metal-insulator transition was suppressed with increasing external pressure. We discovered a superconducting
state in 5 ≤ P ≤ 6 GPa from Tc = 2.1 K to 2.8 K. In addition, when the pressures with maximum SC temperatures are compared
between the PF6 and the TaF6 salts, we found that (TMTTF)2TaF6 has a 0.75 GPa on the negative pressure side in the T-P phase
diagram of (TMTTF)2TaF6. We have performed systematic electrical resistivity and single crystal X-ray diffraction measurements of CsCl-type cubic compound CeZn under high pressure up to 9.5 GPa. Applying the pressure, the coupled magnetic
and crystal structural transition becomes separated above 1.0 GPa and then the AFM order changes to ferromagnetic (FM). The
FM ordering temperature decreases with further applying pressure and changes to a nonmagnetic state above ~3.0 GPa. In thenonmagnetic state, we discovered superconductivity below Tsc ~ 1.3 K over 5.5 GPa, which survives even up to 9.5 GPa.
1.

Abrupt Change in Electronic States under Pressure in New Compound EuPt3Al5: T. Koizumi, F. Honda, Y. J. Sato, D.
Li, D. Aoki, Y. Haga, J. Gouchi, S. Nagasaki, Y. Uwatoko, Y. Kaneko and Y. Ônuki, J. Phys. Soc. Jpn. 91, 043704(1-5)(2022).

2.

La-Substitution Effects on Multisite Ce Compound CePtGe2: H. Muto, S. Onuma, T. Nakano, N. Takeda, J. Gouchi, Y.
Uwatoko, K. Uhlírová, J. Prokleška and V. Sechovský, J. Phys. Soc. Jpn. 91, 074712(1-4) (2022).

3.

Structural Phase Transition and Possible Valence Instability of Ce-4f Electron Induced by Pressure in CeCoSi: Y.
Kawamura, K. Ikeda, A. N. B. A. Dalan, J. Hayashi, K. Takeda, C. Sekine, T. Matsumura, J. Gouchi, Y. Uwatoko, T.
Tomita, H. Takahashi and H. Tanida, J. Phys. Soc. Jpn. 91, 064714(1-8) (2022).

4.

*Magnetic field and pressure phase diagrams of the triangular-lattice antiferromagnet CsCuCl explored via magnetic
3

5.

Pressure dependence of the magnetic ground state in CePtSi2: S. E. Dissanayake, F. Ye, W. Tian, M. Matsuda, H. Muto,
S. Suzuki, T. Nakano, S. Watanabe, J. Gouchi and Y. Uwatoko, Phys. Rev. B 105, 245111(1-6) (2022).

6.

Pressure effect in the antiperovskite phosphide superconductor (SrP0.9Pd0.1)3P: L. Shi, P. Yang, T. Wang, P. Shan, Z.
Liu, S. Xu, K. Chen, N. Wang, L. Zhou, Y. Long, J. Sun, G. Mu, Y. Uwatoko, B. Wang and J. Cheng, Phys. Rev. B 105,214529(1-6) (2022).

7.

Superconducting and structural properties of the noncentrosymmetric Re6Hf superconductor under high pressure:
S. Mariappan, M. Krishnan, D. Bhoi, H. Ma, J. Gouchi, K. Motla, R. P. Singh, P. Vajeeston, A. Sonachalam and Y.
Uwatoko, Phys. Rev. B 105, 224505(1-12) (2022).

8.

Pressure-Induced Superconductivity up to 9 K in the Quasi-One-Dimensional KMn6Bi5: Z. Y. Liu, Q. X. Dong, P. T.
Yang, P. F. Shan, B. S. Wang, J. P. Sun, Z. L. Dun, Y. Uwatoko, G. F. Chen, X. L. Dong, Z. X. Zhao and J. -G. Cheng,
Phys. Rev. Lett. 128, 187001(1-6) (2022).

9.

Electronic properties of α -Mn-type non-centrosymmetric superconductor Re5.5Ta under hydrostatic pressure:
S. Mariappan, D. Bhoi, M. Krishnan, S. Nagasaki, P. Vajeeston, R. K. Arushi, R. K. Kushwaha, R. P. Singh, A.
Sonachalam and Y. Uwatoko, Supercond. Sci. Technol. 36, 025002(1-16) (2022).

susceptibility measurements with a proximity-detector oscillator: K. Nihongi, T. Kida, Y. Narumi, J. Zaccaro, Y.
Kousaka, K. Inoue, K. Kindo, Y. Uwatoko and M. Hagiwara, Phys. Rev. B 105, 184416(1-7) (2022).

10. †Magnetization of Quaternary Heusler Alloy CoFeCrAl: S. Tsujikawa, I. Shigeta, J. Gouchi, T. Kanomata, R. Y. Umetsu,
Y. Uwatoko and M. Hiroi, IEEE Trans. Magn. 58, 1 (1-5) (2022).
11. Destabilization of the Charge Density Wave and the Absence of Superconductivity in ScV6Sn6 under High Pressures up
to 11 GPa: X. Zhang, J. Hou, W. Xia, Z. Xu, P. Yang, A. Wang, Z. Liu, J. Shen, H. Zhang, X. Dong, Y. Uwatoko, J. Sun,
B. Wang, Y. Guo and J. Cheng, Materials 15, 7372(1-11) (2022).
12. Pressure-Induced Superconductivity of the Quasi-One-Dimensional Organic Conductor (TMTTF)2TaF6: M. Itoi, T.
Nakamura and Y. Uwatoko, Materials 15, 4638 (2022).
13. Pressure Induced Superconductivity and Multiple Structural Transitions in CsCl-Type Cubic CeZn Single Crystal: X.
† Joint research with outside partners.

ISSP Activity Report 2022

79Shen, H. Ma, D. Bhoi, J. Gouchi, Y. Uwatoko, A. Dalan, Y. Kawamura, H. Sato, I. Umehara and M. Uehara, Crystals 12,571(1-9) (2022).
14. Anharmonic phonon interactions and the Kondo effect in a FeSe/Sb2Te3/FeSe heterostructure: a proximity effectbetween ferromagnetic chalcogenide and di-chalcogenide: L. Ghosh, M. Alam, M. Singh, S. Dixit, S. V. Kumar, A.
Verma, P. Shahi, Y. Uwatoko, S. Saha, A. Tiwari, A. Tripathi and S. Chatterjee, Nanoscale 14, 10889-10902 (2022).
15. †Sub-micrometer particle size effects on metastable phases for a photoswitchable Co–Fe Prussian blue analog: M. Itoi,
I. Maurin, K. Boukheddaden, M. J. Andrus, D. R. Talham, E. Elkaim and Y. Uwatoko, Journal of Applied Physics 131,
085110(1-11) (2022).
16. Pressure-driven superconducting dome in the vicinity of CDW in the pyrite-type superconductor CuS2: L. F. Shi, Z. Y.
Liu, J. Li, X. X. Zhang, N. N. Wang, Q. Cui, K. Y. Chen, Q. Y. Liu, P. T. Yang, J. P. Sun, B. S. Wang, Y. Uwatoko, Y.
Sui, H. X. Yang and J. -G. Cheng, Phys. Rev. Materials 6, 014802(1-8) (2022).
17. Antiferromagnetic order in Yb4Ru7As6 with the cubic U4Re7Si6-type structure: Y. Hirose, K. Arakawa, Y. Kato, Y.
Uwatoko, H. Ma, J. Gouchi, F. Honda and R. Settai, Journal of Magnetism and Magnetic Materials 556, 169327(1-6)(2022).
18. Evidence for pressure induced unconventional quantum criticality in the coupled spin ladder antiferromagnet
C9H18N2CuBr4: T. Hong, T. Ying, Q. Huang, S. E. Dissanayake, Y. Qiu, M. M. Turnbull, A. A. Podlesnyak, Y. Wu, H.
Cao, Y. Liu, I. Umehara, J. Gouchi, Y. Uwatoko, M. Matsuda, D. A. Tennant, G.-W. Chern, K. P. Schmidt and S. Wessel,
Nat Commun 13, 3073(1-9) (2022).
19. Pressured-induced superconducting phase with large upper critical field and concomitant enhancement of antiferromagnetic transition in EuTe2: P. T. Yang, Z. Y. Liu, K. Y. Chen, X. L. Liu, X. Zhang, Z. H. Yu, H. Zhang, J. P. Sun, Y.
Uwatoko, X. L. Dong, K. Jiang, J. P. Hu, Y. F. Guo, B. S. Wang and J. -G. Cheng, Nat Commun 13, 2975(1-9) (2022).
20. Pressure-induced monotonic enhancement of Tc to over 30 K in superconducting Pr0.82Sr0.18NiO2 thin films: N. N.
Wang, M. W. Yang, Z. Yang, K. Y. Chen, H. Zhang, Q. H. Zhang, Z. H. Zhu, Y. Uwatoko, L. Gu, X. L. Dong, J. P. Sun,
K. J. Jin and J. -G. Cheng, Nat Commun 13, 4367(1-8) (2022).
21. Emergence of Superconductivity on the Border of Antiferromagnetic Order in RbMn6Bi5 under High Pressure: A New
Family of Mn-Based Superconductors: P.-T. Yang, Q.-X. Dong, P.-F. Shan, Z.-Y. Liu, J.-P. Sun, Z.-L. Dun, Y. Uwatoko,
G.-F. Chen, B.-S. Wang and J.-G. Cheng, Chinese Phys. Lett. 39, 067401 (2022).
22. Roles of surface and bulk states in giant magnetoresistance and anomalous hall effect in antiferromagnetically ordered
Bi1.9Dy0.1Te3 topological insulators: V. K. Gangwar, S. Kumar, M. Singh, D. Pal, L. Ghosh, P. Singh, Z. Yufeng, C.
Chen, E. F. Schwier, K. Shimada, P. Shahi, Y. Uwatoko, S. Patil, A. K. Ghosh and S. Chatterjee, J. Mater. Chem. C 10,17281-17290 (2022).
23. Temperature-Pressure Phase Diagram and Possible Pressure-Driven New Electronic Phase in the Polar Metal LiOsO3: J.
-G. Cheng, J. -S. Zhou and Y. Uwatoko, ECS J. Solid State Sci. Technol. 11, 023008(1-4) (2022).
24. Phthalocyanine-Based Radicals as Single-Component Molecular Conductors: R. Sato, J. Gouchi, Y. Uwatoko and M.
Matsuda, Bull. chem. Soc. Jpn. 95, 680-682 (2022).
25. Complex evolution of the magnetic transitions and unexpected absence of bulk superconductivity in chemically precompressed NaMn6Bi5: P. F. Shan, Q. X. Dong, P. T. Yang, L. Xu, Z. Y. Liu, L. F. Shi, N. N. Wang, J. P. Sun, Y. Uwatoko, G.
F. Chen, B. S. Wang and J. -G. Cheng, Phys. Rev. B 107, 094519(1-7) (2023).

Ozaki group
As a continuous research from the FY2021, we explored novel periodic structures of multi-sized hard spheres by a random
structure searching method, and identified 60 putative densest ternary sphere packings (DTSPs), where the 59 packings havebeen discovered by our studies for the first time. We found that some of the discovered DTSPs are well-ordered, for example,
the medium spheres in the (9-7-3) structure are placed in a straight line with comprising the unit cell, and that some of DTSPs
correspond to real crystals. Our study suggests that the diverse structures of DTSPs can be effectively used as structural prototypes for searching ternary, quaternary, and quinary crystal structures. Using two DTSPs, the (13-2-1) and (13-3-1) structures,among the DTSPs as structure prototypes, we exhaustively searched quaternary metal hydrides for the 73 304 candidate
hydrides, and identify 23 hydrides with static and dynamic stability, including H12ScY2La and H12TiNi3Ba. The superconducting transition temperatures Tc, calculated by density functional theory for superconductors, are found to be 5.7 and 6.7 K
for the selected two hydrides H12ScY2Ca and H12ScY2Sr, respectively. We expect that the 23 candidates of hydrides screenedby the exhaustive search for 73304 hydrides provide a guideline to narrow down the search space for trials in the experimental
synthesis of quaternary metal hydrides.
* Joint research among groups within ISSP.

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ISSP Activity Report 2022

1.

†*Structural and electronic evidence of boron atomic chains: Y. Tsujikawa, M. Horio, X. Zhang, T. Senoo, T. Nakashima,

2.

*Elucidation of the atomic-scale processes of dissociative adsorption and spillover of hydrogen on the single atom alloy

3.

Prediction of quaternary hydrides based on densest ternary sphere packings: R. Koshoji, M. Fukuda, M. Kawamura andT. Ozaki, Phys. Rev. Materials 6, 114802 (2022).

4.

Diverse densest ternary sphere packings: R. Koshoji and T. Ozaki, J. Phys. Commun. 6, 075002 (2022).

5.

Absolute Binding Energies of Core Levels in Solids from First Principles: T. Ozaki, Vacuum and Surface Science 65,
236-241 (2022).

6.

†*Ambipolar Nickel Dithiolene Complex Semiconductors: From One- to Two-Dimensional Electronic Structures Based

Y. Ando, T. Ozaki, I. Mochizuki, K. Wada, T. Hyodo, T. Iimori, F. Komori, T. Kondo and I. Matsuda, Phys. Rev. B 106,
205406(1-9) (2022).
catalyst Pd/Cu(111): W. Osada, S. Tanaka, K. Mukai, M. Kawamura, Y. Choi, F. Ozaki, T. Ozaki and J. Yoshinobu,
Phys. Chem. Chem. Phys. 24, 21705-21713 (2022).

upon Alkoxy Chain Lengths: M. Ito, T. Fujino, L. Zhang, S. Yokomori, T. Higashino, R. Makiura, K. J. Takeno, T. Ozaki
and H. Mori, J. Am. Chem. Soc. 145, 2127 (2023).

Noguchi group
We have studied (1) theoretical analysis of isotropic and anisotropic curvature-inducing proteins onto membranes, (2) reactiondiffusion waves on a deformable membrane tube,(3) conformations of ultra-long-chain fatty acids, (4) cavitation generated by asound wave, and (5) assembly of peptide amphiphiles.
1.

Hydrophobic immiscibility controls self-sorting or co-assembly of peptide amphiphiles: R. Wakabayashi, R. Imatani, M.
Katsuya, Y. Higuchi, H. Noguchi, N. Kamiya and M. Goto, Chem. Commun. 58, 585 (2022).

2.

†Conformations of Three Types of Ultra-Long-Chain Fatty Acids in Multicomponent Lipid Bilayers: K. Kawaguchi, H.

3.

Membrane shape deformation induced by curvature-inducing proteins consisting of chiral crescent binding and intrinsically disordered domains: H. Noguchi, J. Chem. Phys. 157, 034901(1-8) (2022).

4.

Excitable reaction-diffusion waves of curvature-inducing proteins on deformable membrane tubes: N. Tamemoto and H.
Noguchi, Phys. Rev. E 106, 024403 (2022).

5.

Anisotropic, Degradable Polymer Assemblies Driven by a Rigid Hydrogen-Bonding Motif That Induce Shape-Specific
Cell Responses: K. Fukushima, K. Matsuzaki, M. Oji, Y. Higuchi, G. Watanabe, Y. Suzuki, M. Kikuchi, N. Fujimura, N.
Shimokawa, H. Ito, T. Kato, S. Kawaguchi and M. Tanaka, Macromolecules 55, 15 (2022).

6.

Nonequilibrium dynamics of a fluid vesicle: Turing patterns and traveling waves: H. Noguchi and N. Tamemoto, J.
Phys.: Conf. Ser. 2207, 012017 (2022).

7.

†Binding of anisotropic curvature-inducing proteins onto membrane tubes: H. Noguchi, C. Tozzi and M. Arroyo, Soft8.

†Effects of vapor-liquid phase transitions on sound-wave propagation: A molecular dynamics study: Y. Asano, H.

9.

Membrane domain formation induced by binding/unbinding of curvature-inducing molecules on both membranesurfaces: H. Noguchi, Soft Matter 19, 679-688 (2023).

Nagao, H. Shindou and H. Noguchi, J. Phys. Chem. B 126, 9316-9324 (2022).

Matter 18, 3384-3394 (2022).

Watanabe and H. Noguchi, Phys. Rev. Fluids 7, 064302 (2022).

10. Disappearance, division, and route change of excitable reaction-diffusion waves in deformable membranes: H. Noguchi,
Sci Rep 13, 6207(1-8) (2023).
11. Binding of curvature-inducing proteins onto biomembranes: H. Noguchi, Int. J. Mod. Phys. B 36, 2230002 (2022).
12. 曲率誘導タンパク質の反応拡散による生体膜のパターン形成 : 野口 博司 , 爲本 尚樹 , 生物物理 62, 338-340 (2022).

Yoshimi group
We have developed and enhanced the usability of programs adopted in the project for advancement of software usability inmaterials science (PASUMS). Our group's activity of 2022 include functional and usability enhancement of (1) abICS and (2)H-wave. We published five papers about the developed software packages (PHYSBO, TeNeS, 2DMAT, abICS and MateriApp† Joint research with outside partners.

ISSP Activity Report 2022

81

sInstaller) in PASUMS. In addition, using the software packages developed by PASUMS, we have studied electronic propertiesof organic conductors such as β'-[Pd(dmit)2]2, α-(BEDT-TTF)2I3 and α-(BEDT-TSeF)2I3.
1.

†Interaction-induced quantum spin Hall insulator in the organic Dirac electron system α-(BEDT-TSeF) I : D. Ohki, K.
2 3

2.

†Robust analytic continuation combining the advantages of the sparse modeling approach and the Padé approximation:

3.

†Facilitating ab initio configurational sampling of multicomponent solids using an on-lattice neural network model and4.

Bayesian optimization package: PHYSBO: Y. Motoyama, R. Tamura, K. Yoshimi, K. Terayama, T. Ueno and K. Tsuda,
Computer Physics Communications 278, 108405 (2022).

5.

†Data-analysis software framework 2DMAT and its application to experimental measurements for two-dimensional6.

sim-trhepd-rheed – Open-source simulator of total-reflection high-energy positron diffraction (TRHEPD) and reflection high-energy electron diffraction (RHEED): T. Hanada, Y. Motoyama, K. Yoshimi and T. Hoshi, Computer Physics
Communications 277, 108371 (2022).

7.

†*TeNeS: Tensor network solver for quantum lattice systems: Y. Motoyama, T. Okubo, K. Yoshimi, S. Morita, T. Kato

8.

†*Unconventional dual 1D–2D quantum spin liquid revealed by ab initio studies on organic solids family: K. Ido, K.

9.

Efficient ab initio many-body calculations based on sparse modeling of Matsubara Green's function: H. Shinaoka, N.
Chikano, E. Gull, J. Li, T. Nomoto, J. Otsuki, M. Wallerberger, T. Wang and K. Yoshimi, SciPost Phys. Lect. Notes 63, 1(2022).

Yoshimi and A. Kobayashi, Phys. Rev. B 105, 205123 (2022).

Y. Motoyama, K. Yoshimi and J. Otsuki, Phys. Rev. B 105, 035139 (2022).

active learning: S. Kasamatsu, Y. Motoyama, K. Yoshimi, U. Matsumoto, A. Kuwabara and T. Ogawa, J. Chem. Phys.
157, 104114 (2022).

material structures: Y. Motoyama, K. Yoshimi, I. Mochizuki, H. Iwamoto, H. Ichinose and T. Hoshi, Computer Physics
Communications 280, 108465 (2022).

and N. Kawashima, Computer Physics Communications 279, 108437 (2022).
Yoshimi, T. Misawa and M. Imada, npj Quantum Mater. 7, 48 (2022).

10. †*MateriApps LIVE! and MateriApps Installer: Environment for starting and scaling up materials science simulations:Y. Motoyama, K. Yoshimi, T. Kato and S. Todo, SoftwareX 20, 101210 (2022).
11. *Data Analysis of Ab initio Effective Hamiltonians in Iron-Based Superconductors — Construction of Predictors forSuperconducting Critical Temperature: K. Ido, Y. Motoyama, K. Yoshimi and T. Misawa, J. Phys. Soc. Jpn. 92, 064702(2023).
12. †Gap opening mechanism for correlated Dirac electrons in organic compounds α-(BEDT−TTF)2I3 and α-(BEDT−TSeF)2I3: D. Ohki, K. Yoshimi, A. Kobayashi and T. Misawa, Phys. Rev. B 107, L041108 (2023).
13. †*Precise Control of the Molecular Arrangement of Organic Semiconductors for High Charge Carrier Mobility: R. Akai,
K. Oka, S. Dekura, K. Yoshimi, H. Mori, R. Nishikubo, A. Saeki and N. Tohnai, J. Phys. Chem. Lett. 14, 3461 (2023).

Okamoto group
The discovery of a new material has a potential to trigger the evolution of condensed matter physics. We aim at discovering
new materials of crystalline solids that exhibit novel quantum phenomena and innovative electronic functions. In this year,
we reported the results of our research on chromium tellurides and iridium and tungsten oxides. (1) We showed that sinteredsamples of Cr telluride Cr3Te4 and Cr2Te3 exhibit large magnetic-field-induced strains accompanied by large volume changes
though the different mechanism from magnetostriction in ferromagnetic metals. In Cr3Te4, volume increases of 500-1170 ppm
by applying a magnetic field of 9 T are observed over the entire temperature range below 350 K. (2) Physical properties ofsintered samples of Ca2Ir2O7, in which pentavalent Ir atoms with 5d4 electron configuration form a pyrochlore structure, havebeen studied. The obtained experimental data strongly suggest that Ca2Ir2O7 is metallic below room temperature and exhibits noelectronic or magnetic phase transitions above 0.12 K.
1.
2.

†Electronic Properties of Pyrochlore-Type Ca Ir O : Y. Nakayama, Y. Okamoto, D. Hirai and K. Takenaka, J. Phys. Soc.
2 2 7

Jpn. 91, 125002(1-2) (2022).

Electronic structure reconstruction by trimer formation in CsW2O6 studied by x-ray photoelectron spectroscopy: R.
Nakamura, D. Takegami, A. Melendez-Sans, L. H. Tjeng, M. Okawa, T. Miyoshino, N. L. Saini, M. Kitamura, D. Shiga,
H. Kumigashira, M. Yoshimura, K. -D. Tsuei, Y. Okamoto and T. Mizokawa, Phys. Rev. B 106, 195104(1-6) (2022).

* Joint research among groups within ISSP.

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3.

*Large magnetic-field-induced strains in sintered chromium tellurides: Y. Kubota, Y. Okamoto, T. Kanematsu, T.

Yajima, D. Hirai and K. Takenaka, Appl. Phys. Lett. 122, 042404 (2023).

Neutron Science Laboratory
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
2022, we obtained great progress for structural studies on molecular liquids under high pressure. We have performed synchrotron-radiation X-ray diffraction works using a Paris-Edinburgh cell (< 5 GPa) and BL37XU, where focusing high energy X-ray
is available, at SPring-8. A new anvil system workable at low temperature (200-300 K) was developed for our experiments.
Neutron diffraction experiments were also conducted using the high-pressure instrument BL11, PLANET at J-PARC. The
target materials are toluene, which is a typical van der Walls liquid and a series of polyalcohols, methanol CH3OH, ethylene
glycol CH2(OH)CH2(OH), and glycerol CH2(OH)CH(OH)CH2(OH). For toluene, we found that the intermolecular correlation is developed under high pressure, and that orientationally ordered structure is not changed much at low temperature. For
glycerol and ethylene glycol, more compact intramolecular structures keeping hydrogen bonds were found under high pressure
and their structures were not changed much at low temperature. Methanol exhibited intermediate pressure and temperaturechange between toluene and glycerol (and ethylene glycol). These results are partly confirmed by classical and the ab initio(Car-Parinello) MD simulations. The present results are completely new and will give a great impact on future research ofglass transitions. Other than these results, we have obtained many interesting heat capacity and quasielastic neutron scattering(QENS) data on MOF (metal-organic-framework) and clathrate hydrate systems using our custom-made adiabatic calorimeters
and the C3-1-1, AGNES spectrometer that we are managing at JRR-3, JAEA.
1.

Intermolecular correlations of liquid and glassy CS2 studied by synchrotron radiation x-ray diffraction: Y. Mizuno, Y.
Zhao, H. Akiba, S. Kohara, K. Ohara, M. G. Tucker, M. T. McDonnell and O. Yamamuro, J. Chem. Phys. 156, 034503(2022).

2.

Synergistic Stimulation of Metal-Organic Frameworks for Stable Super-cooled Liquid and Quenched Glass: Z. Yin, Y.
Zhao, S. Wan, J. Yang, Z. Shi, S. -X. Peng, M. -Z. Chen, T. -Y. Xie, T. -W. Zeng, O. Yamamuro, M. Nirei, H. Akiba, Y.
-B. Zhang, H. -B. Yu and M. -H. Zeng, J. Am. Chem. Soc. 144, 13021-13025 (2022).

3.

Structure of water-in-salt and water-in-bisalt electrolytes: M. A. González, H. Akiba, O. Borodin, G. J. Cuello, L.
Hennet, S. Kohara, E. J. Maginn, L. Mangin-Thro, O. Yamamuro, Y. Zhang, D. L. Price and M. -L. Saboungi, Phys.
Chem. Chem. Phys. 24, 10727-10736 (2022).

4.

Relative effects of polymer composition and sample preparation on glass dynamics: R. M. Elder, A. L. Forster, A.
Krishnamurthy, J. M. Dennis, H. Akiba, O. Yamamuro, K. Ito, K. M. Evans, C. Soles and T. W. Sirk, Soft Matter 18,
6511-6516 (2022).

5.

Rotation of complex ions with ninefold hydrogen coordination studied by quasielastic neutron scattering and firstprinciples molecular dynamics calculations: Y. Ohmasa, S. Takagi, K. Toshima, K. Yokoyama, W. Endo, S. Orimo,
H. Saitoh, T. Yamada, Y. Kawakita, K. Ikeda, T. Otomo, H. Akiba and O. Yamamuro, Phys. Rev. Research 4, 033215(2022).

6.

Nanoscale structure of a hybrid aqueous–nonaqueous electrolyte: M. -L. Saboungi, O. Borodin, D. Price, B. Farago, M.
A. González, S. Kohara, L. Mangin-Thro, A. Wildes and O. Yamamuro, J. Chem. Phys. 158, 124502 (2023).

7.

Reversible Transition between Discrete and 1D Infinite Architectures: A Temperature-Responsive Cu(I) Complex witha Flexible Disilane-Bridged Bis(pyridine) Ligand: Y. Zhao, T. Nakae, S. Takeya, M. Hattori, D. Saito, M. Kato, Y.
Ohmasa, S. Sato, O. Yamamuro, T. Galica, E. Nishibori, S. Kobayashi, T. Seki, T. Yamada and Y. Yamanoi, Chemistry-A
European Journal 29, in press (2023).

8.

The phase diagram of the API benzocaine and its highly persistent, metastable crystalline polymorphs: I. B. Rietveld, H.
Akiba, O. Yamamuro, M. D. Barrio, R. Céolin and J. L. Tamarit, Pharmaceutics 15, in press (2023).

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
we studied the following topics; magnetic diffuse and quasi-elastic scatterings in frustrated magnet YBaCo4O7, anomalous
magnetic moment direction under magnetic anisotropy originated from crystalline electric field in van der Waals compounds† Joint research with outside partners.

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83

CeTe3 and CeTe2Se, damped dirac magnon in the metallic kagome antiferromagnet FeSn.
1.

Anomalous Magnetic Moment Direction under Magnetic Anisotropy Originated from Crystalline Electric Field in vander Waals Compounds CeTe3 and CeTe2Se: D. Ueta, R. Kobayashi, H. Sawada, Y. Iwata, S.-I. Yano, S. Kuniyoshi, Y.
Fujisawa, T. Masuda, Y. Okada and S. Itoh, J. Phys. Soc. Jpn. 91, 094706(1-6) (2022).

2.

Magnetic Diffuse and Quasi-Elastic Scatterings in Frustrated Magnet YBaCo4O7: M. Soda, M. Kofu, S. OhiraKawamura, S. Asai, T. Masuda, H. Yoshizawa and H. Kawano-Furukawa, J. Phys. Soc. Jpn. 91, 094707(1-5) (2022).

3.

Damped Dirac magnon in the metallic kagome antiferromagnet FeSn: S.-H. Do, K. Kaneko, R. Kajimoto, K.
Kamazawa, M. B. Stone, J. Y. Y. Lin, S. Itoh, T. Masuda, G. D. Samolyuk, E. Dagotto, W. R. Meier, B. C. Sales, H.
Miao and A. D. Christianson, Phys. Rev. B 105, L180403(1-6) (2022).

4.

Spin excitation in the coupled honeycomb lattice compound Ni2InSbO6: Z. Liu, Y. Araki, T.-H. Arima, S. Itoh, S. Asaiand T. Masuda, Phys. Rev. B 107, 064428(1-8) (2023).

Nakajima group
Nakajima group is studying magnetic materials with cross-correlated phenomena associated with the symmetry of the magnetic
structures by means of neutron and X-ray scattering techniques. We are also responsible for a polarized-neutron triple-axis
neutron spectrometer PONTA in the research reactor JRR-3 in Tokai, which restarted in 2021 after the long shutdown since
the east Japan great earthquake in 2011. As the instrument team of PONTA, we have been supporting the users of the jointuse program, and have collaborated in their researches. One of the successful research collaborations is the magnetic structure
analysis of the van der Waals magnet CoTa3S6. Prof. Seki’s group in the University of Tokyo synthesized single crystals of
this compound, and found that this compound exhibits a large spontaneous Hall effect without accompanying ferromagnetic
moment. Temperature variations of the Hall resistivity and magnetic susceptibility indicate that the large Hall effect is induced
by an antiferromagnetic order at low temperatures. We performed polarized neutron scattering experiment at PONTA, revealingthat the spontaneous Hall effect arises from an all-in-all-out type non-coplanar magnetic order with broken time-reversal
symmetry, which can be a source of the Hall effect.
1.

†Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound: R. Takagi, N. Matsuyama,

2.

Zoology of Multiple-Q Spin Textures in a Centrosymmetric Tetragonal Magnet with Itinerant Electrons: N. D. Khanh,
T. Nakajima, S. Hayami, S. Gao, Y. Yamasaki, H. Sagayama, H. Nakao, R. Takagi, Y. Motome, Y. Tokura, T. Arima and
S. Seki, Advanced Science 9, 2105452 (2022).

3.

†Polarized neutron scattering study of the centrosymmetric skyrmion host material Gd PdSi : J. Ju, H. Saito, T.
2
3

4.

†Spontaneous topological Hall effect induced by non-coplanar antiferromagnetic order in intercalated van der Waals

5.

†Crystal electric field level scheme leading to giant magnetocaloric effect for hydrogen liquefaction.: N. Terada, H.

V. Ukleev, L. Yu, J. S. White, S. Francoual, J. R. L. Mardegan, S. Hayami, H. Saito, K. Kaneko, K. Ohishi, Y. Onuki,
T.-H. Arima, Y. Tokura, T. Nakajima and S. Seki, Nat Commun 13, 1472 (2022).

Kurumaji, M. Hirschberger, A. Kikkawa, Y. Taguchi, T.-H. Arima, Y. Tokura and T. Nakajima, Phys. Rev. B 107,024405 (2023).

materials: H. Takagi, R. Takagi, S. Minami, T. Nomoto, K. Ohishi, M. -T. Suzuki, Y. Yanagi, M. Hirayama, N. D.
Khanh, K. Karube, H. Saito, D. Hashizume, R. Kiyanagi, Y. Tokura, R. Arita, T. Nakajima and S. Seki, Nat. Phys.,(advanced online publication) (2023).
Mamiya, H. Saito, T. Nakajima, T. D. Yamamoto, K. Terashima, H. Takeya, O. Sakai, S. Itoh, Y. Takano, M. Hase andH. Kitazawa, Commun. Mater. 4, 13 (2023).

Mayumi group
Mayumi group has found that strain-induced crystallization occurs in simple polymer gels with homogeneous network structures. Also, we have performed quasi-elastic neutron scattering experiments on stretched polymer gels to detect the local strain
distribution in the deformed polymer networks.
1.

Quasi-elastic neutron scattering study on dynamics of polymer gels with controlled inhomogeneity under uniaxial deformation: K. Aomura, Y. Yasuda, T. Yamada, T. Sakai and K. Mayumi, Soft Matter 19, 147-152 (2022).

2.

†High-yield one-pot synthesis of polyrotaxanes with tunable well-defined threading ratios over a wide range: T.

3.

Tri-branched gels: Rubbery materials with the lowest branching factor approach the ideal elastic limit: T. Fujiyabu, N.
Sakumichi, T. Katashima, C. Liu, K. Mayumi, U.-I. Chung and T. Sakai, Science Advances 8, eabk0010 (2022).

Noritomi, L. Jiang, H. Yokoyama, K. Mayumi and K. Ito, RSC Advances 12, 3796–3800 (2022).

* Joint research among groups within ISSP.

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ISSP Activity Report 2022

4.

A neuromechanical model for Drosophila larval crawling based on physical measurements: X. Sun, Y. Liu, C. Liu, K.
Mayumi, K. Ito, A. Nose and H. Kohsaka, BMC Biol 20, 130 (2022).

5.

Fabrication of Polyelectrolyte Sheets of Unimolecular Thickness via MOF-Templated Polymerization: A. Nishijima, Y.
Hayashi, K. Mayumi, N. Hosono and T. Uemura, Macromolecules 56, 3141–3148 (2023).

6.

Phantom Chain Simulations for the Fracture of Energy-Minimized Tetra- and Tri-Branched Networks: Y. Masubuchi, Y.
Doi, T. Ishida, N. Sakumichi, T. Sakai, K. Mayumi and T. Uneyama, Macromolecules 56, 2217-2223 (2023).

International MegaGauss Science Laboratory
Kindo group
We have installed a super-capacitor bank for long pulsed magnet. The bank has a capability of generating magnetic field of 60 Twith a duration of 1 to 2 seconds. The bank consists of three units. Each unit has the maximum energy of 60 MJ, 60 MJ and 30
MJ. The maximum current is 18 kA, 18 kA and 9 kA, respectively.
1.

*Topological Phase Transitions and Critical Phenomena Associated with Unwinding of Spin Crystals by High Magnetic

2.

†Anomalous low-temperature physical properties of the ytterbium-based Kondo-lattice compounds Yb TGe (T = Cr,4
83.

†Field-orientation

4.

†Ground state of the S = 1/2 triangular lattice Heisenberg-like antiferromagnet Ba CoSb O in an out-of-plane magnetic
3
2 9

5.

*Magnetic field and pressure phase diagrams of the triangular-lattice antiferromagnet CsCuCl explored via magnetic
3

6.

†*Nature of field-induced antiferromagnetic order in Zn-doped CeCoIn and its connection to quantum criticality in
5

7.

Optical selection rules of the magnetic excitation in the S = 1/2 one-dimensional Ising-like antiferromagnet BaCo2V2O8:
S. Kimura, H. Onishi, A. Okutani, M. Akaki, Y. Narumi, M. Hagiwara, K. Okunishi, K. Kindo, Z. He, T. Taniyama and
M. Itoh, Phys. Rev. B 105, 014417(9 pages) (2022).

8.

†Perfect kagome-lattice antiferromagnets with J
2+ analogs of the copper minerals volborthite and
eff = 1/2 : The Co

9.

Persistence of fermionic spin excitations through a genuine Mott transition in κ-type organics: S. Imajo, N. Kato, R. J.
Marckwardt, E. Yesil, H. Akutsu and Y. Nakazawa, Phys. Rev. B 105, 125130 (2022).

Fields: N. Kanazawa, Y. Fujishiro, K. Akiba, R. Kurihara, H. Mitamura, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga
and Y. Tokura, J. Phys. Soc. Jpn. 91, 1010021(14 pages) (2022).
Mn, Fe, Co, and Ni): S. Yamanaka, M. Hikiji, C. Michioka, H. Ueda, A. Matsuo, K. Kindo, H. Yamaoka, N. Tsujii andK. Yoshimura, Phys. Rev. B 106, 024402 (2022).

dependence of quantum phase transitions in the S = 1/2 triangular-lattice antiferromagnet
Ba3CoSb2O9: K. Okada, H. Tanaka, N. Kurita, D. Yamamoto, A. Matsuo and K. Kindo, Phys. Rev. B 106, 104415(2022).
field: X. Z. Liu, O. Prokhnenko, M. Bartkowiak, A. Gazizulina, D. Yamamoto, A. Matsuo, K. Kindo, K. Okada, N.
Kurita and H. Tanaka, Phys. Rev. B 105, 214433 (2022).
susceptibility measurements with a proximity-detector oscillator: K. Nihongi, T. Kida, Y. Narumi, J. Zaccaro, Y.
Kousaka, K. Inoue, K. Kindo, Y. Uwatoko and M. Hagiwara, Phys. Rev. B 105, 184416(1-7) (2022).

the pure compound: M. Yokoyama, Y. Honma, Y. Oshima, Rahmanto, K. Suzuki, K. Tenya, Y. Shimizu, D. Aoki, A.
Matsuo, K. Kindo, S. Nakamura, Y. Kono, S. Kittaka and T. Sakakibara, Phys. Rev. B 105, 054515(9 pages) (2022).

vesignieite: Y. Haraguchi, T. Ohnoda, A. Matsuo, K. Kindo and H. A. Katori, Phys. Rev. B 106, 214421 (2022).

10. *Quantum phase of the chromium spinel oxide HgCr2O4 in high magnetic fields: S. Kimura, S. Imajo, M. Gen, T.
Momoi, M. Hagiwara, H. Ueda and Y. Kohama, Phys. Rev. B 105, L180405 (2022).
11. Reentrant ferroelectric phase induced by a tilting high magnetic field in Ni3V2O8: C. Dong, J. F. Wang, Z. Z. He, Y.
T. Chang, M. Y. Shi, Y. R. Song, S. M. Jin, Y. Q. Du, Z. Y. Wu, X. T. Han, K. Kindo and M. Yang, Phys. Rev. B 105,
024427(6 pages) (2022).
12. †Revised phase diagram of the high-Tc cuprate superconductor Pb-doped Bi2Sr2CaCu2O8+δ revealed by anisotropictransport measurements: K. Harada, Y. Teramoto, T. Usui, K. Itaka, T. Fujii, T. Noji, H. Taniguchi, M. Matsukawa, H.
Ishikawa, K. Kindo, D. S. Dessau and T. Watanabe, Phys. Rev. B 105, 085131(9 pages) (2022).
13. *Magnetically Hidden State on the Ground Floor of the Magnetic Devil’s Staircase: S. Imajo, N. Matsuyama, T.
Nomura, T. Kihara, S. Nakamura, C. Marcenat, T. Klein, G. Seyfarth, C. Zhong, H. Kageyama, K. Kindo, T. Momoi and† Joint research with outside partners.

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85

Y. Kohama, Phys. Rev. Lett. 129, 147201 (2022).
14. Role of the Anion Layer’s Polarity in Organic Conductors β″-(BEDT-TTF)2XC2H4SO3 (X = Cl and Br): H. Akutsu, M.
Uruichi, S. Imajo, K. Kindo, Y. Nakazawa and S. S. Turner, J. Phys. Chem. C 126, 16529 (2022).
15. Electronic Heat Capacity and Lattice Softening of Partially Deuterated Compounds of κ-(BEDT-TTF)2Cu[N(CN)2]Br:Y. Matsumura, S. Imajo, S. Yamashita, H. Akutsu and Y. Nakazawa, Crystals 12, 2 (2022).
16. Superconductivity and Charge Ordering in BEDT-TTF Based Organic Conductors with β″-Type Molecular Arrangement: Y. Ihara and S. Imajo, Crystals 12, 711 (2022).
17. †Birchite Cd2Cu2(PO4)2SO4·5H2O as a model antiferromagnetic spin-1/2 Heisenberg J1−J2 chain: M. Fujihala, H. O.
Jeschke, K. Morita, T. Kuwai, A. Koda, H. Okabe, A. Matsuo, K. Kindo and S. Mitsuda, Phys. Rev. Materials 6, 114408(2022).
18. †Quantum paramagnetism in the hyperhoneycomb Kitaev magnet β−ZnIrO3: Y. Haraguchi, A. Matsuo, K. Kindo and H.
A. Katori, Phys. Rev. Materials 6, L021401(6 pages) (2022).
19. *SmI3: 4f5 honeycomb magnet with spin-orbital entangled Γ7 Kramers doublet: H. Ishikawa, R. Kurihara, T. Yajima, D.
Nishio-Hamane, Y. Shimizu, T. Sakakibara, A. Matsuo and K. Kindo, Phys. Rev. Materials 6, 064405 (2022).
20. †Magnetocaloric effect in the Ru-doped MnNiGe system: M. Ito, K. Onda, R. Kashima, A. Matsuo and K. Kindo,
Journal of Magnetism and Magnetic Materials 546, 168767 (2022).
21. †*Dimensional reduction and incommensurate dynamic correlations in the S = 1/2 triangular-lattice antiferromagnet
Ca3ReO5Cl2: S. A. Zvyagin, A. N. Ponomaryov, J. Wosnitza, D. Hirai, Z. Hiroi, M. Gen, Y. Kohama, A. Matsuo, Y. H.
Matsuda and K. Kindo, Nat Commun 13, 6310 (1-6) (2022).
22. *Emergent anisotropy in the Fulde–Ferrell–Larkin–Ovchinnikov state: S. Imajo, T. Nomura, Y. Kohama and K. Kindo,
Nat Commun 13, 5590 (2022).
23. *Quantum transport evidence of isolated topological nodal-line fermions: H. Kim, J. M. Ok, S. Cha, B. G. Jang, C.
I. Kwon, Y. Kohama, K. Kindo, W. J. Cho, E. S. Choi, Y. J. Jo, W. Kang, J. H. Shim, K. S. Kim and J. S. Kim, Nat
Commun 13, 7188 (2022).
24. †Spin-glass transition in the spin–orbit-entangled Jeff = 0 Mott insulating double-perovskite ruthenate: H. Yatsuzuka, Y.
Haraguchi, A. Matsuo, K. Kindo and H. A. Katori, Sci Rep 12, 2429(6 pages) (2022).
25. *Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S8:
M. Gen, H. Ishikawa, A. Ikeda, A. Miyake, Z. Yang, Y. Okamoto, M. Mori, K. Takenaka, H. Sagayama, T. Kurumaji,
Y. Tokunaga, T. Arima, M. Tokunaga, K. Kindo, Y. H. Matsuda and Y. Kohama, Phys. Rev. Research 4, 033148(1-13)(2022).
26. *Band-filling effects in single-crystalline oligomer models for doped PEDOT: 3,4-ethylenedioxythiophene (EDOT)
dimer salt with hydrogen-bonded infinite sulfate anion chains: R. Kameyama, T. Fujino, S. Dekura, S. Imajo, T.
Miyamoto, H. Okamoto and H. Mori, J. Mater. Chem. C 10, 7543 (2022).
27. Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate: T.
J. Blundell, A. L. Morritt, E. K. Rusbridge, L. Quibell, J. Oakes, H. Akutsu, Y. Nakazawa, S. Imajo, T. Kadoya, J.-I.
Yamada, S. J. Coles, J. Christensen and L. Martin, Mater. Adv. 3, 4724 (2022).
28. †*Quantum oscillations in the centrosymmetric skyrmion-hosting magnet GdRu2Si2: N. Matsuyama, T. Nomura, S.
Imajo, T. Nomoto, R. Arita, K. Sudo, M. Kimata, N. D. Khanh, R. Takagi, Y. Tokura, S. Seki, K. Kindo and Y. Kohama,Phys. Rev. B 107, 104421 (2023).
29. Thermodynamic properties of the Mott insulator-metal transition in a triangular lattice system without magnetic order:
E. Yesil, S. Imajo, S. Yamashita, H. Akutsu, Y. Saito, A. Pustogow, A. Kawamoto and Y. Nakazawa, Phys. Rev. B 107,
045133 (2023).
30. *Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields: T. Nomoto, C. Zhong,H. Kageyama, Y. Suzuki, M. Jaime, Y. Hashimoto, S. Katsumoto, N. Matsuyama, C. Dong, A. Matsuo, K. Kindo, K.
Izawa and Y. Kohama, Rev. Sci. Instrum. 94, 054901 (2023).
31. †Enhanced Superconducting Pairing Strength near a Pure Nematic Quantum Critical Point: K. Mukasa, K. Ishida, S.
Imajo, M. Qiu, M. Saito, K. Matsuura, Y. Sugimura, S. Liu, Y. Uezono, T. Otsuka, M. Culo, S. Kasahara, Y. Matsuda, N.
E. Hussey, T. Watanabe, K. Kindo and T. Shibauchi, Phys. Rev. X 13, 011032 (2023).

* Joint research among groups within ISSP.

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Tokunaga group
We newly developed a long-distance optical microscope that can be installed in PPMS. We successfully obtained surface
morphology in a magnetic shape-memory alloy using this system. In addition to this, we used various techniques, e.g.,magnetization, magnetoresistance, dielectric constant, and magnetostriction, to study various magnetic materials, topologicalsemimetals, superconductors, and semiconductors.
1.

Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction: R. Kurihara, Y. Hirose, S. Sano, K. Mitsumoto, A. Miyake, M. Tokunaga and R.
Settai, J. Phys. Soc. Jpn. 91, 024601(1-7) (2022).

2.

*Ferroelectric Transition of a Chiral Molecular Crystal BINOL 2DMSO: T. Nomura, T. Yajima, Z. Yang, R. Kurihara, Y.

3.

†Magnetism of Al Fex 2−xGeO5 with Andalusite Structure: K. Kakimoto, S. Takada, H. Ohta, Y. Haraguchi, M. Hagihala,

4.

Magnetovolume Effect on the First-Order Metamagnetic Transition in UTe2: A. Miyake, M. Gen, A. Ikeda, K. Miyake,Y. Shimizu, Y. J. Sato, D. Li, A. Nakamura, Y. Homma, F. Honda, J. Flouquet, M. Tokunaga and D. Aoki, J. Phys. Soc.
Jpn. 91, 063703(1-6) (2022).

5.

*Topological Phase Transitions and Critical Phenomena Associated with Unwinding of Spin Crystals by High Magnetic

6.

*Closing the hybridization charge gap in the Kondo semiconductor SmB

7.

*Enhancement of giant magnetoelectric effect in Ni-doped CaBaCo O : M. Gen, A. Miyake, H. Yagiuchi, Y. Watanabe,
4 7

8.

†Highly anisotropic geometrical Hall effect via f-d exchange fields in doped pyrochlore molybdates: H. Fukuda, K.

9.

†Two Distinct Cu(II)–V(IV) Superexchange Interactions with Similar Bond Angles in a Triangular “CuV ” Fragment:
2

Ishii, M. Tokunaga, Y. H. Matsuda, Y. Kohama, K. Kimura and T. Kimura, J. Phys. Soc. Jpn. 91, 064702(1-6) (2022).

S. Torii, T. Kamiyama, H. Mitamura, M. Tokunaga, A. Hatakeyama and H. A. Katori, J. Phys. Soc. Jpn. 91, 054704/1-7(2022).

Fields: N. Kanazawa, Y. Fujishiro, K. Akiba, R. Kurihara, H. Mitamura, A. Miyake, A. Matsuo, K. Kindo, M. Tokunaga
and Y. Tokura, J. Phys. Soc. Jpn. 91, 1010021(14 pages) (2022).
6 with an ultrahigh magnetic field: D.
Nakamura, A. Miyake, A. Ikeda, M. Tokunaga, F. Iga and Y. H. Matsuda, Phys. Rev. B 105, L241105(1-6) (2022).

A. Ikeda, Y. H. Matsuda, M. Tokunaga, T. Arima and Y. Tokunaga, Phys. Rev. B 105, 214412(1-9) (2022).

Ueda, Y. Kaneko, R. Kurihara, A. Miyake, K. Karube, M. Tokunaga, Y. Taguchi and Y. Tokura, Phys. Rev. B 106,
144431(1-7) (2022).
Y. Wang, M. Fukuda, S. Nikolaev, A. Miyake, K. J. Griffith, M. L. Nisbet, E. Hiralal, R. Gautier, B. L. Fisher, M.
Tokunaga, M. Azuma and K. R. Poeppelmeier, Inorg. Chem. 61, 10234-10241 (2022).

10. †Spin-orbit-derived giant magnetoresistance in a layered magnetic semiconductor AgCrSe2: H. Takahashi, T. Akiba, A.
H. Mayo, K. Akiba, A. Miyake, M. Tokunaga, H. Mori, R. Arita and S. Ishiwata, Phys. Rev. Materials 6, 054602(1-6)(2022).
11. Long-distance polarizing microscope system combined with solenoid-type magnet for microscopy and simultaneous
measurement of physical parameters: Y. Kinoshita, T. Miyakawa, X. Xu and M. Tokunaga, Review of Scientific Instruments 93, 073702(1-7) (2022).
12. Extremely high upper critical field in BiCh2-based (Ch: S and Se) layered superconductor LaO0.5F0.5BiS2-xSex (x = 0.22
and 0.69): K. Hoshi, R. Kurihara, Y. Goto, M. Tokunaga and Y. Mizuguchi, Sci Rep 12, 288(1-8) (2022).
13. †Possible helimagnetic order in Co4+-containing perovskites Sr1-xCaxCoO3: H. Takahashi, M. Onose, Y. Kobayashi, T.
Osaka, S. Maeda, A. Miyake, M. Tokunaga, H. Sagayama, Y. Yamasaki and S. Ishiwata, APL Materials 10, 111116(1-7)(2022).
14. †Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO3: R. Yamada, J.
Fujioka, M. Kawamura, S. Sakai, M. Hirayama, R. Arita, T. Okawa, D. Hashizume, T. Sato, F. Kagawa, R. Kurihara, M.
Tokunaga and Y. Tokura, npj Quantum Mater. 7, 13(1-6) (2022).
15. *Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S8:
M. Gen, H. Ishikawa, A. Ikeda, A. Miyake, Z. Yang, Y. Okamoto, M. Mori, K. Takenaka, H. Sagayama, T. Kurumaji,
Y. Tokunaga, T. Arima, M. Tokunaga, K. Kindo, Y. H. Matsuda and Y. Kohama, Phys. Rev. Research 4, 033148(1-13)(2022).
16. *Multipole polaron in the devil’s staircase of CeSb: Y. Arai, K. Kuroda, T. Nomoto, Z. H. Tin, S. Sakuragi, C. Bareille,
S. Akebi, K. Kurokawa, Y. Kinoshita, W. -L. Zhang, S. Shin, M. Tokunaga, H. Kitazawa, Y. Haga, H. S. Suzuki, S.
Miyasaka, S. Tajima, K. Iwasa, R. Arita and T. Kondo, Nat. Mater. 21, 410(1-7) (2022).
† Joint research with outside partners.

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17. †Chirality-Dependent Magnetoelectric Responses in a Magnetic-Field-Induced Ferroelectric Phase of Pb(TiO)
Cu4(PO4)4: K. Kimura, T. Katsuyoshi, A. Miyake, M. Tokunaga, S. Kimura and T. Kimura, Adv Elect Materials 8,
2200167(1-9) (2022).
18. †Coherent description of the magnetic properties of SeCuO3 versus temperature and magnetic field: X. Rocquefelte,
M. Herak, A. Miyake, W. Lafargue-Dit-Hauret, H. Berger, M. Tokunaga and A. Saúl, Phys. Rev. B 107, 054407(1-8)(2023).
19. Field-induced reentrant insulator state of a gap-closed topological insulator (Bi1-xSbx) in quantum-limit states: Y.
Kinoshita, T. Fujita, R. Kurihara, A. Miyake, Y. Izaki, Y. Fuseya and M. Tokunaga, Phys. Rev. B 107, 125140(1-9)(2023).
20. †Field-tunable Weyl points and large anomalous Hall effect in the degenerate magnetic semiconductor EuMg2Bi2: M.
Kondo, M. Ochi, R. Kurihara, A. Miyake, Y. Yamasaki, M. Tokunaga, H. Nakao, K. Kuroki, T. Kida, M. Hagiwara, H.
Murakawa, N. Hanasaki and H. Sakai, Phys. Rev. B 107, L121112(1-7) (2023).
21. †Ising-type quasi-one-dimensional ferromagnetism with anisotropic hybridization in UNi4P2: A. Maurya, A. Miyake, H.
Kotegawa, Y. Shimizu, Y. J. Sato, A. Nakamura, D. Li, Y. Homma, F. Honda, M. Tokunaga and D. Aoki, Phys. Rev. B
107, 085142(1-6) (2023).
22. †*One-dimensional magnetism in synthetic Pauflerite, β−VOSO4: D. L. Quintero-Castro, G. J. Nilsen, K. MeierKirchner, A. Benitez-Castro, G. Guenther, T. Sakakibara, M. Tokunaga, C. Agu, I. Mandal and A. A. Tsirlin, Phys. Rev.
Materials 7, 045003(1-7) (2023).
23. †Ordered and disordered variants of the triangular lattice antiferromagnet Ca3NiNb2O9: Crystal growth and magnetic
properties: D. Rout, R. Tang, M. Skoulatos, B. Ouladdiaf, Y. Kinoshita, A. Miyake, M. Tokunaga, S. Mahapatra and S.
Singh, Phys. Rev. Materials 7, 024419(1-14) (2023).
24. †Double dome structure of the Bose–Einstein condensation in diluted S = 3/2 quantum magnets: Y. Watanabe, A.
Miyake, M. Gen, Y. Mizukami, K. Hashimoto, T. Shibauchi, A. Ikeda, M. Tokunaga, T. Kurumaji, Y. Tokunaga andT.-H. Arima, Nat Commun 14, 1260(1-9) (2023).

Y. Matsuda group
Ultrahigh magnetic field research in the range of 500 T has been developing and the insulator-metal phase transition inducedby such high magnetic fields is observed in VO2 as well as in SmB6. As for VO2, the review article was published along withdetails of technical developments on the electromagnetic flux compression 1000 T field generator. Breathing pyrochlore
compound possesses strong spin-lattice coupling and exhibits a variety of quantum phases in high magnetic fields; CuInCr4S8
has been studied with multi probes such as magnetization, striction, and dielectric constant. Several intriguing magnetic
systems, a poler magnet CaBaCo4O7, a dimer magnet Ni2V2O7, and a triangle lattice magnet Ca3ReO5Cl2 have also studiedin high magnetic fields. The review of the high magnetic field phases in solid and liquid oxygen has also been reported. The
potential field-induced liquid-liquid phase transition is still uncovered and required to do continuous research. As new technicalprogress, a portable single-turn coil system termed PINK-01 was developed and applied to the X-ray free electron laser experiment. The X-ray diffraction up to 77 T has been performed and a structural transformation in a Mn-oxide was observed.
1.

*Ferroelectric Transition of a Chiral Molecular Crystal BINOL 2DMSO: T. Nomura, T. Yajima, Z. Yang, R. Kurihara, Y.

2.

†Magnetic-Field-Induced Insulator Metal Transition of W-doped VO Observed by Electromagnetic Flux Compression
2

3.

*Closing the hybridization charge gap in the Kondo semiconductor SmB

6 with an ultrahigh magnetic field: D.
Nakamura, A. Miyake, A. Ikeda, M. Tokunaga, F. Iga and Y. H. Matsuda, Phys. Rev. B 105, L241105(1-6) (2022).

4.

*Enhancement of giant magnetoelectric effect in Ni-doped CaBaCo O : M. Gen, A. Miyake, H. Yagiuchi, Y. Watanabe,
4 7

5.

†*Metastable magnetization plateaus in the S = 1 organic spin ladder BIP-TENO induced by a microsecond-pulsed

6.

†Unusual dimerization and magnetization plateaus in S = 1 skew chain Ni V O observed at 120 T: J. J. Cao, Z. W.
2 2 7

Ishii, M. Tokunaga, Y. H. Matsuda, Y. Kohama, K. Kimura and T. Kimura, J. Phys. Soc. Jpn. 91, 064702(1-6) (2022).

at ISSP: Y. H. Matsuda, Y. Muraoka, D. Nakamura, A. Ikeda, Y. Ishii, X.-G. Zhou, H. Sawabe and S. Takeyama, J. Phys.
Soc. Jpn. 91, 101008(1-11) (2022).

A. Ikeda, Y. H. Matsuda, M. Tokunaga, T. Arima and Y. Tokunaga, Phys. Rev. B 105, 214412(1-9) (2022).

megagauss field: K. Nomura, Y. H. Matsuda, A. Ikeda, Y. Kohama, H. Tsuda, N. Amaya, T. Ono and Y. Hosokoshi,
Phys. Rev. B 105, 214430(1-8) (2022).
Ouyang, X. C. Liu, T. T. Xiao, Y. R. Song, J. F. Wang, Y. Ishii, X. G. Zhou and Y. H. Matsuda, Phys. Rev. B 106,
184409(1-6) (2022).

* Joint research among groups within ISSP.

88

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7.

Generating 77 T using a portable pulse magnet for single-shot quantum beam experiments: A. Ikeda, Y. H. Matsuda,
X. Zhou, S. Peng, Y. Ishii, T. Yajima, Y. Kubota, I. Inoue, Y. Inubushi, K. Tono and M. Yabashi, Appl. Phys. Lett. 120,
142403 (5pages) (2022).

8.

†*Dimensional reduction and incommensurate dynamic correlations in the S = 1/2 triangular-lattice antiferromagnet

9.

*Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr S :4 8

Ca3ReO5Cl2: S. A. Zvyagin, A. N. Ponomaryov, J. Wosnitza, D. Hirai, Z. Hiroi, M. Gen, Y. Kohama, A. Matsuo, Y. H.
Matsuda and K. Kindo, Nat Commun 13, 6310(1-6) (2022).

M. Gen, H. Ishikawa, A. Ikeda, A. Miyake, Z. Yang, Y. Okamoto, M. Mori, K. Takenaka, H. Sagayama, T. Kurumaji,
Y. Tokunaga, T. Arima, M. Tokunaga, K. Kindo, Y. H. Matsuda and Y. Kohama, Phys. Rev. Research 4, 033148(1-13)(2022).

10. †Solid and Liquid Oxygen under Ultrahigh Magnetic Fields: T. Nomura, Y. H. Matsuda and T. C. Kobayashi, Oxygen 2,
152-163 (2022).

Kohama group
We have investigated various high-field properties. In magnetic materials, such as CuInCr4S8, Ca3ReO5Cl2, HaCr2O4,
BIP-TENO, and SrCu2(BO3)2, the field induced phase transitions have been investigated by magnetization and calorimetry in
non-destructive and destructive magnetic fields. In two dimensional conductors, SrRuO3, alpha(BETS)2I3, and SrAs3, we haveinvestigated the topological properties. Here, the TDO and resistivity measurements have revealed rich transport phenomena in
two dimensional materials. Using newly developed rf technique, we have determined the critical field of SmFeAsO at the lowtemperature limit. We have also succeeded to measure the thermal conductivity for the first time in pulsed magnet.
1.

*Ferroelectric Transition of a Chiral Molecular Crystal BINOL 2DMSO: T. Nomura, T. Yajima, Z. Yang, R. Kurihara, Y.

2.

High-Field Calorimetric Studies on Low-Dimensional and Frustrated Quantum Magnets: Y. Kohama, J. Phys. Soc. Jpn.
91, 101004 (2022).

3.

†*Metastable magnetization plateaus in the S=1 organic spin ladder BIP-TENO induced by a microsecond-pulsed

4.

*Quantum phase of the chromium spinel oxide HgCr O in high magnetic fields: S. Kimura, S. Imajo, M. Gen, T.
2 4
Momoi, M. Hagiwara, H. Ueda and Y. Kohama, Phys. Rev. B 105, L180405 (2022).

5.

*Magnetically Hidden State on the Ground Floor of the Magnetic Devil’s Staircase: S. Imajo, N. Matsuyama, T.

6.

Time-resolved measurements in pulsed magnetic fields: Y. Kohama, T. Nomura, S. Zherlitsyn and Y. Ihara, Journal ofApplied Physics 132, 070903 (2022).

7.

High upper critical field (120 T) with small anisotropy of highly hydrogen-substituted SmFeAsO epitaxial film: K.
Hanzawa, J. Matsumoto, S. Iimura, Y. Kohama, H. Hiramatsu and H. Hosono, Phys. Rev. Materials 6, L111801 (2022).

8.

†*Dimensional reduction and incommensurate dynamic correlations in the S = 1/2 triangular-lattice antiferromagnet

9.

*Emergent anisotropy in the Fulde–Ferrell–Larkin–Ovchinnikov state: S. Imajo, T. Nomura, Y. Kohama and K. Kindo,

Ishii, M. Tokunaga, Y. H. Matsuda, Y. Kohama, K. Kimura and T. Kimura, J. Phys. Soc. Jpn. 91, 064702(1-6) (2022).

megagauss field: K. Nomura, Y. H. Matsuda, A. Ikeda, Y. Kohama, H. Tsuda, N. Amaya, T. Ono and Y. Hosokoshi,
Phys. Rev. B 105, 214430(1-8) (2022).

Nomura, T. Kihara, S. Nakamura, C. Marcenat, T. Klein, G. Seyfarth, C. Zhong, H. Kageyama, K. Kindo, T. Momoi and
Y. Kohama, Phys. Rev. Lett. 129, 147201 (2022).

Ca3ReO5Cl2: S. A. Zvyagin, A. N. Ponomaryov, J. Wosnitza, D. Hirai, Z. Hiroi, M. Gen, Y. Kohama, A. Matsuo, Y. H.
Matsuda and K. Kindo, Nat Commun 13, 6310(1-6) (2022).
Nat Commun 13, 5590 (2022).

10. *Quantum transport evidence of isolated topological nodal-line fermions: H. Kim, J. M. Ok, S. Cha, B. G. Jang, C.
I. Kwon, Y. Kohama, K. Kindo, W. J. Cho, E. S. Choi, Y. J. Jo, W. Kang, J. H. Shim, K. S. Kim and J. S. Kim, Nat
Commun 13, 7188 (2022).
11. High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films: S. Kaneta-Takada,Y. K. Wakabayashi, Y. Krockenberger, T. Nomura, Y. Kohama, S. A. Nikolaev, H. Das, H. Irie, K. Takiguchi, S. Ohya,
M. Tanaka, Y. Taniyasu and H. Yamamoto, npj Quantum Mater. 7, 102 (2022).
12. *Complex magnetic phase diagram with a small phase pocket in a three-dimensional frustrated magnet CuInCr4S8:
M. Gen, H. Ishikawa, A. Ikeda, A. Miyake, Z. Yang, Y. Okamoto, M. Mori, K. Takenaka, H. Sagayama, T. Kurumaji,
Y. Tokunaga, T. Arima, M. Tokunaga, K. Kindo, Y. H. Matsuda and Y. Kohama, Phys. Rev. Research 4, 033148(1-13)† Joint research with outside partners.

ISSP Activity Report 2022

89(2022).
13. †*Quantum oscillations in the centrosymmetric skyrmion-hosting magnet GdRu2Si2: N. Matsuyama, T. Nomura, S.
Imajo, T. Nomoto, R. Arita, K. Sudo, M. Kimata, N. D. Khanh, R. Takagi, Y. Tokura, S. Seki, K. Kindo and Y. Kohama,Phys. Rev. B 107, 104421 (2023).
14. Rhombic skyrmion lattice coupled with orthorhombic structural distortion in EuAl4: M. Gen, R. Takagi, Y. Watanabe, S.
Kitou, H. Sagayama, N. Matsuyama, Y. Kohama, A. Ikeda, Y. Onuki, T. Kurumaji, T.-H. Arima and S. Seki, Phys. Rev.
B 107, L020410 (2023).
15. *Simultaneous measurement of specific heat and thermal conductivity in pulsed magnetic fields: T. Nomoto, C. Zhong,H. Kageyama, Y. Suzuki, M. Jaime, Y. Hashimoto, S. Katsumoto, N. Matsuyama, C. Dong, A. Matsuo, K. Kindo, K.
Izawa and Y. Kohama, Rev. Sci. Instrum. 94, 054901 (2023).
16. Nonreciprocal Phonon Propagation in a Metallic Chiral Magnet: T. Nomura, X. -X. Zhang, R. Takagi, K. Karube, A.
Kikkawa, Y. Taguchi, Y. Tokura, S. Zherlitsyn, Y. Kohama and S. Seki, Phys. Rev. Lett. 130, 176301 (2023).
17. フラットトップ磁場を用いたパルス磁場中 NMR 測定 : 井原 慶彦 , 小濱 芳允 , 固体物理 58, 89-98 (2023).
18. 新しいカイラル有機超伝導体 : 野村 肇宏 , 固体物理 58, 41-45 (2023).
19. Critical Current Measurements of HTS Tapes Using Pulsed Current in High Fields at Low Temperatures: Y. Tsuchiya, I.
Sakai, K. Mizuno, Y. Kohama, Y. Yoshida and S. Awaji, IEEE Trans. Appl. Supercond. 33, 1 (2023).
20. Correlation-driven organic 3D topological insulator with relativistic fermions: T. Nomoto, S. Imajo, H. Akutsu, Y.
Nakazawa and Y. Kohama, Nat Commun 14, 2130 (2023).

Laser and Synchrotron Research Center
Kobayashi group
We are studing a combination between an artificial intelligence and a laser material processing, aiming a construction of atheory.
1.

*Stimulated Rayleigh Scattering Enhanced by a Longitudinal Plasma Mode in a Periodically Driven Dirac Semimetal

2.

Autonomous parameter optimization for femtosecond laser micro-drilling: K. Bamoto, H. Sakurai, S. Tani and Y.
Kobayashi, Opt. Express 30, 243 (2022).

3.

Ultrafast laser ablation simulator using deep neural networks: S. Tani and Y. Kobayashi, Sci Rep 12, 5837 (2022).

Cd3As2: Y. Murotani, N. Kanda, T. N. Ikeda, T. Matsuda, M. Goyal, J. Yoshinobu, Y. Kobayashi, S. Stemmer and R.
Matsunaga, Phys. Rev. Lett. 129, 207402 (2022).

Harada group
Application of soft X-ray emission spectroscopy has been significantly advanced, and research on the behavior of interfacial
water on the surface of diverse polymer materials have been realized by developing the precise humidification system. As arepresentative example of this application hydrogen-bonded structure of water on the surface of PMEA, a material used forblood tubing in ECMO against COVID-19, was clarified by comparing infrared spectroscopy and DFT calculations, and acomparison of X-ray emission spectroscopy with AFM revealed that water molecules induce phase separation of polymers
and change their biocompatibility. After more than a decade of debate, a theory explaining both the temperature and isotope
dependence of soft X-ray emission spectra was completed, and the X-ray emission results of liquid water published since 2008
were finally validated. The electronic state changes of transition metals during charging and discharging of the cathode material
LiMn2O4 and the anode material Fe2O3 of lithium-ion batteries were clarified using operando spectroscopy. The CREST
project, which aims to integrate soft and hard X-ray imaging techniques with information science, has started, and we reported
on high-resolution soft X-ray imaging using a Walter mirror in collaboration with Prof. Kimura's group.
1.

†Interpretation of the X-Ray Emission Spectra of Liquid Water through Temperature and Isotope Dependence: O.

2.

†Identification of Valence Electronic States Reflecting the Hydrogen Bonding in Liquid Ethanol: R. Yamamura, K.

Takahashi, R. Yamamura, T. Tokushima and Y. Harada, Phys. Rev. Lett. 128, 086002(1-6) (2022).
Yamazoe, J. Miyawaki, Y. Harada and O. Takahashi, J. Phys. Chem. B 126, 1101-1107 (2022).

* Joint research among groups within ISSP.

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3.

Infrared Spectra and Hydrogen-Bond Configurations of Water Molecules at the Interface of Water-Insoluble Polymers
under Humidified Conditions: Y. Ikemoto, Y. Harada, M. Tanaka, S.-N. Nishimura, D. Murakami, N. Kurahashi, T.
Moriwaki, K. Yamazoe, H. Washizu, Y. Ishii and H. Torii, J. Phys. Chem. B 126, 4143-4151 (2022).

4.

†Critical In-Plane Density of Polyelectrolyte Brush for the Ordered Hydrogen-Bonded Structure of Incorporated Water:

5.

†Hydration Mechanism in Blood-Compatible Polymers Undergoing Phase Separation: D. Murakami, K. Yamazoe,

6.

† 磁場中共鳴非弾性軟 X 線散乱によるハーフメタル型ホイスラー合金のスピン偏極電子構造研究 : 藤原 秀紀 , 梅津 理恵 ,7.

†Electronic Structure of Carbon Dioxide in Sylgard-184 Evaluated by Using X-ray Emission Spectroscopy: R. Matsuno,

8.

†*Soft X-ray ptychography system using a Wolter mirror for achromatic illumination optics: T. Kimura, Y. Takeo, K.

9.

†Operando resonant soft X-ray emission spectroscopy of the LiMn O cathode using an aqueous electrolyte solution: D.
2 4

K. Yamazoe, Y. Higaki, Y. Inutsuka, J. Miyawaki, A. Takahara and Y. Harada, Langmuir 38, 3076-3081 (2022).

S.-N. Nishimura, N. Kurahashi, T. Ueda, J. Miyawaki, Y. Ikemoto, M. Tanaka and Y. Harada, Langmuir 38, 1090-1098(2022).
宮脇 淳 , 原田 慈久 , 菅 滋正 , 放射光 35, 78-87 (2022).

Y. Nutthon, A. Miyano, K. Ninomiya, M. Nishibori, H. Kiuchi, S. Fujikawa, Y. Harada and A. Takahara, Chem. Lett. 51,
650-653 (2022).
Sakurai, N. Furuya, S. Egawa, G. Yamaguchi, Y. Matsuzawa, T. Kume, H. Mimura, M. Shimura, H. Ohashi, I. Matsuda
and Y. Harada, Opt. Express 30, 26220 (2022).

Asakura, Y. Nanba, H. Niwa, H. Kiuchi, J. Miyawaki, M. Okubo, H. Matsuda, Y. Harada and E. Hosono, Phys. Chem.
Chem. Phys. 24, 19177-19183 (2022).

10. Editorial: Interfacial Water: A Physical Chemistry Perspective, Volume II: Y. Harada, Front. Chem. 10, 896586(1-2)(2022).
11. †Conversion Reaction of Anode Material for Li-ion Battery Revealed by Operando Soft X-ray Emission Spectroscopy:
D. ASAKURA, E. HOSONO and Y. HARADA, 電気化学 90, 4-9 (2022).
12. † 放射光を用いた固体高分子型燃料電池正極触媒のオペランド解析 : 尾嶋 正治 , 原田 慈久 , 燃料電池 21, 7-13 (2022).

I. Matsuda group
We have devoted ourselves to a project of developing the next-generation synchrotron radiation (SR) facility, NanoTerasu, atSendai in Miyagi-prefecture. To focus on the project, we discontinued the joint-research at the beamline, SPring-8 BL07LSU,
in August. Subsequently, we packed our instruments, two undulators, ambient-pressure XPS system and process-informatics
robot units. Then, we successfully transferred them to the NanoTerasu beamlines by the end of the fiscal year. At the X-ray
free electron laser (XFEL) beamline, SACLA BL-1, we have developed a new method of nonlinear X-ray spectroscopy andachieved fruitful science of the functional materials. Based on the SR and XFEL experiments, we have also succeeded insynthesizing boron nanomaterials and in unveiling their intriguing physical/chemical properties.
1.

*Environmental effects on layer-dependent dynamics of Dirac fermions in quasicrystalline bilayer graphene: Y. Zhao,

2.

†*Homotopic analysis of quantum states in two-dimensional polymorphs by a herringbone lattice model: Y. Ando, X.

3.

†*Structural and electronic evidence of boron atomic chains: Y. Tsujikawa, M. Horio, X. Zhang, T. Senoo, T. Nakashima,

4.

Element-selective magnetization states in a Gd23Fe67Co10 alloy, probed by soft X-ray resonant magneto-optical Kerr
effect: T. Sumi, T. Senoo, M. Horio, S. E. Moussaoui, E. Nakamura, K. Tanaka, A. Tsukamoto and I. Matsuda, Jpn. J.
Appl. Phys. 62, SB8001 (2022).

5.

*Photoinduced transient states of antiferromagnetic orderings in La Sr FeO and SrFeO
1/3 2/33
3−δ thin films observed

6.

†Electronic Topological Transition of 2D Boron by the Ion Exchange Reaction: X. Zhang, Y. Tsujikawa, I. Tateishi, M.

T. Suzuki, T. Iimori, H. -W. Kim, J. R. Ahn, M. Horio, Y. Sato, Y. Fukaya, T. Kanai, K. Okazaki, S. Shin, S. Tanaka, F.
Komori, H. Fukidome and I. Matsuda, Phys. Rev. B 105, 115304 (2022).

Zhang, Y. Tsujikawa, Y. Sato, M. Horio, J. Haruyama, O. Sugino, T. Kondo and I. Matsuda, Phys. Rev. B 106, 195106(2022).
Y. Ando, T. Ozaki, I. Mochizuki, K. Wada, T. Hyodo, T. Iimori, F. Komori, T. Kondo and I. Matsuda, Phys. Rev. B 106,
205406(1-9) (2022).

through time-resolved resonant soft x-ray scattering: K. Yamamoto, T. Tsuyama, S. Ito, K. Takubo, I. Matsuda, N.
Pontius, C. Schüßler-Langeheine, M. Minohara, H. Kumigashira, Y. Yamasaki, H. Nakao, Y. Murakami, T. Katase, T.
Kamiya and H. Wadati, New J. Phys. 24, 043012(1-9) (2022).

† Joint research with outside partners.

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Niibe, T. Wada, M. Horio, M. Hikichi, Y. Ando, K. Yubuta, T. Kondo and I. Matsuda, J. Phys. Chem. C 126, 1280212808 (2022).
7.

†*Soft X-ray ptychography system using a Wolter mirror for achromatic illumination optics: T. Kimura, Y. Takeo, K.

8.

The 2022 magneto-optics roadmap: A. Kimel, A. Zvezdin, S. Sharma, S. Shallcross, N. D. Sousa, A. García-Martín,
G. Salvan, J. Hamrle, O. Stejskal, J. McCord, S. Tacchi, G. Carlotti, P. Gambardella, G. Salis, M. Münzenberg, M.
Schultze, V. Temnov, I. V. Bychkov, L. N. Kotov, N. Maccaferri, D. Ignatyeva, V. Belotelov, C. Donnelly, A. H. Rodriguez, I. Matsuda, T. Ruchon, M. Fanciulli, M. Sacchi, C. R. Du, H. Wang, N. P. Armitage, M. Schubert, V. Darakchieva,
B. Liu, Z. Huang, B. Ding, A. Berger and P. Vavassori, J. Phys. D: Appl. Phys. 55, 463003 (2022).

9.

†*Materials Science Research by Ambient Pressure X-ray Photoelectron Spectroscopy Systems at Synchrotron Radia-

Sakurai, N. Furuya, S. Egawa, G. Yamaguchi, Y. Matsuzawa, T. Kume, H. Mimura, M. Shimura, H. Ohashi, I. Matsuda
and Y. Harada, Opt. Express 30, 26220 (2022).

tion Facilities in Japan: Applications in Energy, Catalysis, and Sensors: S. Yamamoto, Y. Takagi, T. Koitaya, R.
Toyoshima, M. Horio, I. Matsuda, H. Kondoh, T. Yokoyama and J. Yoshinobu, Synchrotron Radiation News 35, 19-25(2022).

10. †Surface Exchange Reaction of Mixed Conductive La0.65Ca0.35FeO3−δ during Oxygen Evolution and Incorporation as
Traced by Operando X-ray Photoelectron Spectroscopy: I. Kagomiya, T. Hirano, Y. Yagi, K.-I. Kakimoto, S. Yamamotoand I. Matsuda, ACS Appl. Mater. Interfaces 14, 48194-48199 (2022).
11. Resolving decay-time dependent photoluminescence induced by phonon-dressed excitons in ZnO: R. Yukawa, S.
Yamamoto, R. Arita, Y. Minami, K. Yamanoi, K. Ozawa, K. Sakamoto, T. Shimizu, N. Sarukura and I. Matsuda, Phys.
Rev. Materials 6, 104607 (2022).
12. †*Functionalization of the MoS2 basal plane for activation of molecular hydrogen by Pd deposition: F. Ozaki, S. Tanaka,
W. Osada, K. Mukai, M. Horio, T. Koitaya, S. Yamamoto, I. Matsuda and J. Yoshinobu, Applied Surface Science 593,
153313 (2022).
13. †*Hydrogen absorption and diffusion behaviors in cube-shaped palladium nanoparticles revealed by ambient-pressure
X-ray photoelectron spectroscopy: J. Tang, O. Seo, D. S. R. Rocabado, T. Koitaya, S. Yamamoto, Y. Nanba, C. Song,J. Kim, A. Yoshigoe, M. Koyama, S. Dekura, H. Kobayashi, H. Kitagawa, O. Sakata, I. Matsuda and J. Yoshinobu,
Applied Surface Science 587, 152797 (2022).
14. †Measurement of X-ray Magnetic Linear Dichroism by Rotating Polarization Angle of Soft X-ray Generated by a
Segmented Cross Undulator: Y. Kudo, M. Horio, T. Sumi, T. Wada, Y. Hirata, T. Ohkochi, T. Kinoshita and I. Matsuda,e-J. Surf. Sci. Nanotechnol. 20, 124-127 (2022).
15. Recovery Process from the Reversed Magnetization Simulated with a Square Lattice: T. Senoo, T. Sumi, M. Horio, A.
Tsukamoto and I. Matsuda, e-J. Surf. Sci. Nanotechnol. 20, 221-225 (2022).
16. Separating Non-linear Optical Signals of a Sample from High Harmonic Radiation in a Soft X-ray Free Electron Laser:
T. Sumi, M. Horio, T. Senoo, T. Wada, Y. Tsujikawa, X. Zhang, P. Manset, M. Araki, Y. Hirata, W. S. Drisdell, J. W.
Freeland, A. Amado, M. Zuerch, Y. Kubota, S. Owada, K. Tono, M. Yabashi, C. P. Schwartz and I. Matsuda, e-J. Surf.
Sci. Nanotechnol. 20, 31(1-5) (2022).
17. Electronic Structures of Polymorphic Layers of Borophane: I. Tateishi, X. Zhang and I. Matsuda, Molecules 27, 1808(113) (2022).
18. Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets: N. Noguchi, S.-I. Ito, M.
Hikichi, Y. Cho, K. Goto, A. Kubo, I. Matsuda, T. Fujita, M. Miyauchi and T. Kondo, Molecules 27, 8261(1-12) (2022).
19. Structure of χ3-Borophene Studied by Total-Reflection High-Energy Positron Diffraction (TRHEPD): Y. Tsujikawa, M.
Shoji, M. Hamada, T. Takeda, I. Mochizuki, T. Hyodo, I. Matsuda and A. Takayama, Molecules 27, 4219(1-8) (2022).
20. Carbon dioxide adsorption and conversion to methane and ethane on hydrogen boride sheets: T. Goto, S.-I. Ito, S. L.
Shinde, R. Ishibiki, Y. Hikita, I. Matsuda, I. Hamada, H. Hosono and T. Kondo, Commun Chem 5, 118(1-10) (2022).
21. Observing soft x-ray magnetization-induced second harmonic generation at a heterojunction interface: T. Sumi, M.
Horio, T. Senoo, Y. Kubota, G. Yamaguchi, T. Wada, M. Miyamoto, K. Yamaguchi, Y. Tsujikawa, Y. Sato, M. Niibe,
Y. Hirata, Y. Miyauchi, D. Oshima, T. Kato, S. Owada, K. Tono, M. Yabashi and I. Matsuda, Appl. Phys. Lett. 122,
171601(1-5) (2023).
22. †*Suppression of atomic displacive excitation in photo-induced A1g phonon mode of bismuth unveiled by low-temperature time-resolved x-ray diffraction: Y. Kubota, Y. Tanaka, T. Togashi, T. Ebisu, K. Tamasaku, H. Osawa, T. Wada, O.
Sugino, I. Matsuda and M. Yabashi, Appl. Phys. Lett. 122, 092201 (2023).
* Joint research among groups within ISSP.

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23. †*Observing an ordered surface phase by B deposition on Cu(110): Y. Tsujikawa, X. Zhang, M. Horio, T. Wada, M.
Miyamoto, T. Sumi, F. Komori, T. Kondo and I. Matsuda, Surface Science 732, 122282 (2023).
24. †*Accelerated Synthesis of Borophane (HB) Sheets through HCl-Assisted Ion-Exchange Reaction with YCrB4: X.
Zhang, M. Hikichi, T. Iimori, Y. Tsujikawa, M. Yuan, M. Horio, K. Yubuta, F. Komori, M. Miyauchi, T. Kondo and I.
Matsuda, Molecules 28, 2985(1-15) (2023).
25. Prediction of a Cyclic Hydrogenated Boron Molecule as a Promising Building Block for Borophane: Y. Ando, T.
Nakashima, H. Yin, I. Tateishi, X. Zhang, Y. Tsujikawa, M. Horio, N. T. Cuong, S. Okada, T. Kondo and I. Matsuda,
Molecules 28, 1225(1-13) (2023).
26. †*Developing a Simple Scanning Probe System for Soft X-ray Spectroscopy with a Nano-focusing Mirror: H. Ando,
M. Horio, Y. Takeo, M. Niibe, T. Wada, Y. Ando, T. Kondo, T. Kimura and I. Matsuda, e-J. Surf. Sci. Nanotechnol.,
2023-020 (2023), in print.
27. Probing lithium mobility at a solid electrolyte surface: C. Woodahl, S. Jamnuch, A. Amado, C. B. Uzundal, E. Berger,
P. Manset, Y. Zhu, Y. Li, D. D. Fong, J. G. Connell, Y. Hirata, Y. Kubota, S. Owada, K. Tono, M. Yabashi, S. G. E. T.
Velthuis, S. Tepavcevic, I. Matsuda, W. S. Drisdell, C. P. Schwartz, J. W. Freeland, T. A. Pascal, A. Zong and M. Zuerch,
Nat. Mater. (2023), accepted for publication.
28. Enhanced Superconductivity and Rashba effect in a Buckled Plumbene-Au Kagome Superstructure: 9.-H. Chen,
C.-H. Chen, G.-H. Chen, W.-C. Chen, P. Amrit, F.-X. Chen, P.-J. Chen, C.-K. Ku, C.-T. Lee, N. Kawakami, J.-Y. Li, I.
Matsuda, W.-H. Chang, J.-J. Lin, C.-T. Wu, C.-Y. Mou, H.-T. Jeng, S.-J. Tang and C.-L. Lin, Advanced Science (2023),
accepted for publication.
29. †*In-Situ Electrical Detection of Methane Oxidation on Atomically Thin IrO2 Nanosheet Films Down to Room Temperature: Y. Ishihara, T. Koitaya, W. Sugimoto, S. Yamamoto, I. Matsuda, J. Yoshinobu and R. Nouchi, Advanced Materials
Interfaces (2023), accepted for publication.
30. 物理科学，この 1 年 2022: 松田 巌 , 近藤 剛弘他 , ( 丸善出版 , 東京都千代田区 , 2022).

Itatani group
By using soft X-ray attosecond pulses, we have performed soft X-ray transient absorption spectroscopy of ring-opening reaction
dynamics associated with photo-absorption of a ring-shaped molecule 1,3-cyclohexadiene. We found that the WoodwardHoffmann rule for molecular orbital symmetry holds even in transient chemical reaction states for the first time. Developmentof a new soft X-ray beamline with a flat water jet was initiated to expand the variation of samples from gas phase to condensed
matters. High harmonic generation in the flat water jet was also examined with intense MIR pulses, and we obtained a uniquevibrational signal due to molecular vibration. Photoelectron re-scattering experiments associated with tunnel ionization were
performed using carrier-envelope phase (CEP)-stable intense ultrashort pulses in the infrared region. The CEP dependence ofthe momentum distribution of photoelectrons due to backward re-scattering was measured for Kr atoms and CO2 moleculeswith nearly equal ionization potentials, and the differential scattering cross sections were derived. We also successfully
extracted the influence of the multi-center scattering effect in the case of CO2 molecules. As for the light source R&D, we havedeveloped a highly CEP-stable infrared light source in the 2 μm region, which is excited by a Yb solid-state laser operating at
100 kHz repetition rate.
1.

*Photo-Excitation Band-Structure Engineering of 2H-NbSe

2.

* パルス内差周波発生法と光パラメトリック増幅による位相安定高強度マルチテラヘルツパルス発生 : 神田 夏輝 , 石井 順久 ,3.

†Ultrafast multidimensional spectroscopy with field resolution and noncollinear geometry at mid-infrared frequencies:

4.

†Spin canting in nonlinear terahertz magnon dynamics revealed by magnetorefractive probing in orthoferrite: T.

5.

†Ultrafast opto-protonics in a hydrogen-bonded π-molecular ferroelectric crystal: Y. Okimoto, P. Xia, J. Itatani, H.

6.

†*Quasi One-Dimensional Band Structure of Photoinduced Semimetal Phase of Ta Ni
2 1−xCoxSe5 (x = 0.0 and 0.1): T.

2 Probed by Time- and Angle-Resolved Photoemission
Spectroscopy: M. Watanabe, T. Suzuki, T. Someya, Y. Ogawa, S. Michimae, M. Fujisawa, T. Kanai, J. Itatani, T. Saitoh,
S. Shin and K. Okazaki, J. Phys. Soc. Jpn. 91, 064703 (2022).

板谷 治郎 , 松永 隆佑 , レーザー研究 50, 286 (2022).

T. Deckert, J. Allerbeck, T. Kurihara and D. Brida, New J. Phys. 24, 023005 (1-9) (2022).

Kurihara, M. Bamba, H. Watanabe, M. Nakajima and T. Suemoto, arXiv 2202, 11365 (2022).

Matsushima, T. Ishikawa, S.-Y. Koshihara and S. Horiuchi, APL Materials 10, 090702 (2022).

Mitsuoka, Y. Takahashi, T. Suzuki, M. Okawa, H. Takagi, N. Katayama, H. Sawa, M. Nohara, M. Watanabe, J. Xu, Q.
Ren, M. Fujisawa, T. Kanai, J. Itatani, K. Okazaki, S. Shin and T. Mizokawa, J. Phys. Soc. Jpn. 92, 023703 (2023).

† Joint research with outside partners.

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93

7.

Comparative study of photoelectron momentum distributions from Kr and CO2 near a backward rescattering caustic bycarrier-envelope-phase mapping: T. Mizuno, T. Yang, T. Kurihara, N. Ishii, T. Kanai, O. I. Tolstikhin, T. Morishita and J.
Itatani, Phys. Rev. A 107, 033101 (2023).

8.

Highly CEP-stable optical parametric amplifier at 2 μm with a few-cycle duration and 100 kHz repetition rate: T.
Kurihara, T. Yang, T. Mizuno, T. Kanai and J. Itatani, Opt. Express 31, 11649 (2023).

9.

†Real-time observation of the Woodward–Hoffmann rule for 1,3-cyclohexadiene by femtosecond soft X-ray transientabsorption: T. Sekikawa, N. Saito, Y. Kurimoto, N. Ishii, T. Mizuno, T. Kanai, J. Itatani, K. Saita and T. Taketsugu,
Phys. Chem. Chem. Phys. 25, 8497 (2023).

10. †*Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe: M. Okawa, Y.
Akabane, M. Maeda, G. Tan, L.-D. Zhao, M. G. Kanatzidis, T. Suzuki, M. Watanabe, J. Xu, Q. Ren, M. Fujisawa, T.
Kanai, J. Itatani, S. Shin, K. Okazaki, N. L. Saini and T. Mizokawa, Scripta Materialia 223, 115081 (2023).
11. Intense infrared lasers for strong-field science: Z. Chang, L. Fang, V. Fedorov, C. Geiger, S. Ghimire, C. Heide, N. Ishii,
J. Itatani, C. Joshi, Y. Kobayashi, P. Kumar, A. Marra, S. Mirov, I. Petrushina, M. Polyanskiy, D. A. Reis, S. Tochitsky,
S. Vasilyev, L. Wang, Y. Wu and F. Zhou, Adv. Opt. Photon. 14, 652 (2022).
12. 超高速光パルスによる強誘電体の光制御（「光と物質の量子相互作用ハンドブック」第 3 編 第 9 章）: 沖本 洋一 , 板谷 治郎 ,堀内左 智雄 , ( エヌ・ティー・エス , 東京都千代田区 , 2023).

Kondo group
We found evidence for the multipole polaron state in the devil’s staircase of CeSb, and presented selective observation of
surface and bulk bands in polar WTe2. We also revealed band structure leading to a large anomalous Hall effect in the noncentrosymmetric antiferromagnet CoNb3S6.
1.

*Multipole polaron in the devil’s staircase of CeSb: Y. Arai, K. Kuroda, T. Nomoto, Z. H. Tin, S. Sakuragi, C. Bareille,2.

Large anomalous Hall effect induced by weak ferromagnetism in the noncentrosymmetric antiferromagnet CoNb3S6: H.
Tanaka, S. Okazaki, K. Kuroda, R. Noguchi, Y. Arai, S. Minami, S. Ideta, K. Tanaka, D. Lu, M. Hashimoto, V. Kandyba,
M. Cattelan, A. Barinov, T. Muro, T. Sasagawa and T. Kondo, Phys. Review B 105, 121102(1-7) (2022).

3.

*Selective observation of surface and bulk bands in polar WTe by laser-based spin- and angle-resolved photoemission
2

4.

*Visualization of optical polarization transfer to photoelectron spin vector emitted from a spin-orbit coupled surface

5.

*Tunable vortex Majorana modes controlled by strain in homogeneous LiFeAs: W. Liu, Q. Hu, X. Wang, Y. Zhong, F.

6.

*Semiconducting Electronic Structure of the Ferromagnetic Spinel HgCr Se Revealed by Soft-X-Ray Angle-Resolved
2 4

7.

*Nodeless electron pairing in CsV Sb -derived kagome superconductors: Y. Zhong, J. Liu, X. Wu, Z. Guguchia, J. -X.
3 5

8.

S. Akebi, K. Kurokawa, Y. Kinoshita, W. -L. Zhang, S. Shin, M. Tokunaga, H. Kitazawa, Y. Haga, H. S. Suzuki, S.
Miyasaka, S. Tajima, K. Iwasa, R. Arita and T. Kondo, Nat. Mater. 21, 410(1-7) (2022).

spectroscopy.: Y. Wan, L. Wang, K. Kuroda, P. Zhang, K. Koshiishi, M. Suzuki, J. Kim, R. Noguchi, C. Bareille, K.
Yaji, A. Harasawa, S. Shin, S.-W. Cheong, A. Fujimori and T. Kondo, Phys. Review B 105, 085421 (2022).
state.: K. Kuroda, K. Yaji, R. Noguchi, A. Harasawa, S. Shin, T. Kondo and F. Komori, Phys. Review B 105,
121106(1-6) (2022).
Yang, L. Kong, L. Cao, G. Li, Y. Peng, K. Okazaki, T. Kondo, C. Jin, J. Xu, H. -J. Gao and H. Ding, Quantum Front. 1,
20 (2022).

Photoemission Spectroscopy: H. Tanaka, A. V. Telegin, Y. P. Sukhorukov, V. A. Golyashov, O. E. Tereshchenko, A. N.
Lavrov, T. Matsuda, R. Matsunaga, R. Akashi, M. Lippmaa, Y. Arai, S. Ideta, K. Tanaka, T. Kondo and K. Kuroda, Phys.
Rev. Lett. 130, 186402 (1-6) (2023).
Yin, A. Mine, Y. Li, S. Najafzadeh, D. Das, C. Mielke, R. Khasanov, H. Luetkens, T. Suzuki, K. Liu, X. Han, T. Kondo,
J. Hu, S. Shin, Z. Wang, X. Shi, Y. Yao and K. Okazaki, Nature 617, 488-492 (2023).

*Testing electron-phonon coupling for the superconductivity in kagome metal CsV Sb : Y. Zhong, S. Li, H. Liu, Y.
3 5

Dong, K. Aido, Y. Arai, H. Li, W. Zhang, Y. Shi, Z. Wang, S. Shin, H. N. Lee, H. Miao, T. Kondo and K. Okazaki, Nat.
Commun. 14, 1945 (2023).

Matsunaga group
We have studied light-matter interactions and light-induced nonequilibrium phenomena in solids by utilizing terahertz (THz)pulse. By using a phase-stable broadband multiterahertz pulses (10-45 THz, 40-180 meV, or 7-30 μm) with the pulse width of* Joint research among groups within ISSP.

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ISSP Activity Report 2022

28 fs, we investigated dynamics of broadband response functions of a 3D Dirac semimetal Cd3As2 under intense periodic lightwave with 30 THz frequency. We found a sharp increase of absorption at 28 THz and negative conductivity with optical gain
at 31 THz. The drastic change of the spectrum can be explained by the stimulated Rayleigh scattering, which is remarkably
enhanced at the frequency close to the longitudinal plasma resonance. The results suggest potential application for nondissipative slow light generation using conducting material at room temperature.
1.

*Stimulated Rayleigh Scattering Enhanced by a Longitudinal Plasma Mode in a Periodically Driven Dirac Semimetal2.

* パルス内差周波発生法と光パラメトリック増幅による位相安定高強度マルチテラヘルツパルス発生 : 神田 夏輝 , 石井 順久 ,3.

Topological Materials for Functional Optoelectronic Devices: H. Chorsi, B. Cheng, B. Zhao, J. Toudert, V. Asadchy, O.
F. Shoron, S. Fan and R. Matsunaga, Advanced Functional Materials 32, 2110655 (2022).

4.

*Tracking Ultrafast Change of Multiterahertz Broadband Response Functions in a Photoexcited Dirac Semimetal

5.

Cd3As2: Y. Murotani, N. Kanda, T. N. Ikeda, T. Matsuda, M. Goyal, J. Yoshinobu, Y. Kobayashi, S. Stemmer and R.
Matsunaga, Phys. Rev. Lett. 129, 207402 (2022).
板谷 治郎 , 松永 隆佑 , レーザー研究 50, 286 (2022).

Cd3As2 Thin Film: N. Kanda, Y. Murotani, T. Matsuda, M. Goyal, S. Salmani-Rezaie, J. Yoshinobu, S. Stemmer and R.
Matsunaga, Nano Letters 22, 2358 (2022).
*Semiconducting Electronic Structure of the Ferromagnetic Spinel HgCr Se Revealed by Soft-X-Ray Angle-Resolved
2 4

Photoemission Spectroscopy: H. Tanaka, A. V. Telegin, Y. P. Sukhorukov, V. A. Golyashov, O. E. Tereshchenko, A. N.
Lavrov, T. Matsuda, R. Matsunaga, R. Akashi, M. Lippmaa, Y. Arai, S. Ideta, K. Tanaka, T. Kondo and K. Kuroda, Phys.
Rev. Lett. 130, 186402 (1-6) (2023).

6.

*Ultrafast Dynamics of Intrinsic Anomalous Hall Effect in the Topological Antiferromagnet Mn Sn: T. Matsuda, T.
3

7.

*Pump-probe spectroscopy for non-equilibrium condensed matter: R. Matsunaga and K. Okazaki, Encyclopedia ofHigo, T. Koretsune, N. Kanda, Y. Hirai, H. Peng, T. Matsuo, N. Yoshikawa, R. Shimano, S. Nakatsuji and R. Matsunaga,
Phys. Rev. Lett. 130, 126302 (2023).
Condensed Matter Physics, TBD (2023).

8. 「半金属」、光と物質の量子相互作用ハンドブック（監修 荒川泰彦）第 3 篇 第 11 章 : 松永 隆佑 , 森本 高裕 , (NTS, .,2023).

Okazaki group
We have investigated the superconducting-gap structures of unconventional superconductors by using a low-temperature andhigh-resolution laser ARPES apparatus and transient electronic structures in photo-excited non-equilibrium states by using atime-resolved ARPES apparatus using EUV and SX lasers. In the academic year 2022, we have revealed the superconducting
gap structures of CsV3Sb5-derived Kagome superconductors by high-resolution laser ARPES. In addition, we have developed atunable mid-infrared pump system for HHG laser time-resolved ARPES.
1.

*Photo-Excitation Band-Structure Engineering of 2H-NbSe

2.

*Environmental effects on layer-dependent dynamics of Dirac fermions in quasicrystalline bilayer graphene: Y. Zhao,

3.

*Tunable vortex Majorana modes controlled by strain in homogeneous LiFeAs: W. Liu, Q. Hu, X. Wang, Y. Zhong, F.

4.

†*Quasi One-Dimensional Band Structure of Photoinduced Semimetal Phase of Ta Ni
2 1−xCoxSe5 (x = 0.0 and 0.1): T.

2 Probed by Time- and Angle-Resolved Photoemission
Spectroscopy: M. Watanabe, T. Suzuki, T. Someya, Y. Ogawa, S. Michimae, M. Fujisawa, T. Kanai, J. Itatani, T. Saitoh,
S. Shin and K. Okazaki, J. Phys. Soc. Jpn. 91, 064703 (2022).

T. Suzuki, T. Iimori, H. -W. Kim, J. R. Ahn, M. Horio, Y. Sato, Y. Fukaya, T. Kanai, K. Okazaki, S. Shin, S. Tanaka, F.
Komori, H. Fukidome and I. Matsuda, Phys. Rev. B 105, 115304 (2022).

Yang, L. Kong, L. Cao, G. Li, Y. Peng, K. Okazaki, T. Kondo, C. Jin, J. Xu, H. -J. Gao and H. Ding, Quantum Front. 1,
20 (2022).

Mitsuoka, Y. Takahashi, T. Suzuki, M. Okawa, H. Takagi, N. Katayama, H. Sawa, M. Nohara, M. Watanabe, J. Xu, Q.
Ren, M. Fujisawa, T. Kanai, J. Itatani, K. Okazaki, S. Shin and T. Mizokawa, J. Phys. Soc. Jpn. 92, 023703 (2023).

5.

*Coexistence of Bulk-Nodal and Surface-Nodeless Cooper Pairings in a Superconducting Dirac Semimetal: X. P. Yang,

6.

*Nodeless electron pairing in CsV Sb -derived kagome superconductors: Y. Zhong, J. Liu, X. Wu, Z. Guguchia, J. -X.
3 5

Y. Zhong, S. Mardanya, T. A. Cochran, R. Chapai, A. Mine, J. Zhang, J. Sánchez-Barriga, Z. -J. Cheng, O. J. Clark,
J. -X. Yin, J. Blawat, G. Cheng, I. Belopolski, T. Nagashima, S. Najafzadeh, S. Gao, N. Yao, A. Bansil, R. Jin, T. -R.
Chang, S. Shin, K. Okazaki and M. Z. Hasan, Phys. Rev. Lett. 130, 046402 (2023).
Yin, A. Mine, Y. Li, S. Najafzadeh, D. Das, C. Mielke, R. Khasanov, H. Luetkens, T. Suzuki, K. Liu, X. Han, T. Kondo,† Joint research with outside partners.

ISSP Activity Report 2022

95

J. Hu, S. Shin, Z. Wang, X. Shi, Y. Yao and K. Okazaki, Nature 617, 488-492 (2023).
7.

*Testing electron-phonon coupling for the superconductivity in kagome metal CsV Sb : Y. Zhong, S. Li, H. Liu, Y.
3 5

Dong, K. Aido, Y. Arai, H. Li, W. Zhang, Y. Shi, Z. Wang, S. Shin, H. N. Lee, H. Miao, T. Kondo and K. Okazaki, Nat.
Commun. 14, 1945 (2023).

8.

†*Direct observation of multiple conduction-band minima in high-performance thermoelectric SnSe: M. Okawa, Y.

9.

*Pump-probe spectroscopy for non-equilibrium condensed matter: R. Matsunaga and K. Okazaki, Encyclopedia of

Akabane, M. Maeda, G. Tan, L.-D. Zhao, M. G. Kanatzidis, T. Suzuki, M. Watanabe, J. Xu, Q. Ren, M. Fujisawa, T.
Kanai, J. Itatani, S. Shin, K. Okazaki, N. L. Saini and T. Mizokawa, Scripta Materialia 223, 115081 (2023).
Condensed Matter Physics, TBD (2023).

Kimura group
In FY2022, the Kimura Lab. worked on the development of soft X-ray nanoimaging techniques using SPring-8 and SACLA. In
experiments on SPring-8 BL07LSU, we developed a soft X-ray ptychography system using a total-reflection Wolter mirror toachieve absorption and phase imaging with a resolution of 50 nm, and succeeded in multi-wavelength imaging using mammalian cells. We also attempted to demonstrate femtosecond single-shot femtosecond spectromicroscopy imaging using a multiaperture grating in experiments at SACLA BL1. Using a transmission type grating fabricated by electron beam lithography anda total reflection Walter mirror, we succeeded in single pulse measurement of the two-dimensional spectral distribution of an
X-ray free electron laser emitted by self-amplified spontaneous emission.
1.

Femtosecond X-ray Laser Reveals Intact Sea–Island Structures of Metastable Solid-State Electrolytes for Batteries: A.
Suzuki, H. Tanaka, H. Yamashige, Y. Orikasa, Y. Niida, T. Kimura, K. Tono, M. Yabashi, T. Ishikawa, Y. Bessho, Y. Joti
and Y. Nishino, Nano Lett. 22, 4603 (2022).

2.

†*Soft X-ray ptychography system using a Wolter mirror for achromatic illumination optics: T. Kimura, Y. Takeo, K.

3.

An arrayed-window microfluidic device for observation of mixed nanoparticles with an X-ray free-electron laser: Y.
Matsumoto, Y. Takeo, S. Egawa, G. Yamaguchi, S. Yokomae, M. Takei, H. Yumoto, T. Koyama, H. Ohashi, K. Tono, M.
Yabashi, H. Mimura and T. Kimura, Opt Rev 29, 7 (2022).

4.

Fabrication of ultrashort sub-meter-radius x-ray mirrors using dynamic stencil deposition with figure correction: T.
Shimamura, Y. Takeo, T. Kimura, F. Perrin, A. Vivo, Y. Senba, H. Kishimoto, H. Ohashi and H. Mimura, Review of
Scientific Instruments 94, 043102 (2023).

5.

Design of soft x-ray fluorescence microscopy beyond 100-nm spatial resolution with ultrashort Kirkpatrick-Baez
mirror: T. Shimamura, Y. Takeo, F. Moriya, T. Kimura, M. Shimura, Y. Senba, H. Kishimoto, H. Ohashi, K. Shimba, Y.
Jimbo, H. Mimura, H. Mimura, C. Morawe and A. M. Khounsary, Advances in X-Ray/EUV Optics and Components
XVII 12240, 20-33 (2023).

6.

†*Developing a Simple Scanning Probe System for Soft X-ray Spectroscopy with a Nano-focusing Mirror: H. Ando,

Sakurai, N. Furuya, S. Egawa, G. Yamaguchi, Y. Matsuzawa, T. Kume, H. Mimura, M. Shimura, H. Ohashi, I. Matsuda
and Y. Harada, Opt. Express 30, 26220 (2022).

M. Horio, Y. Takeo, M. Niibe, T. Wada, Y. Ando, T. Kondo, T. Kimura and I. Matsuda, e-J. Surf. Sci. Nanotechnol.,
2023-020 (2023), in print.

* Joint research among groups within ISSP.

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ISSP Activity Report 2022

Subject of Joint Research

2022年度

共同利用課題一覧（前期）/ Joint Research List 2022 (First Term)

2022年度

共同利用課題一覧（後期）/ Joint Research List 2022 (Latter Term)

2022年度

中性子科学研究施設

2022年度

軌道放射物性研究施設

2022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 2022

2022年度CCMSスパコン共用事業枠課題一覧 / Supercomputing Consortium for Computational Materials Science Project List of Supercomputer System 2022

共同利用課題一覧 / Joint Research List of Neutron Scattering Research Project 2022
共同利用課題一覧 / Joint Research List of Synchrotron Radiation Research Project 2022

ISSP Activity Report 2022

2022年度 共同利用課題一覧（前期）/ Joint Research List 2022 (First Term)※実施課題一覧、所属は申請時のデータ

嘱託課題 / Comission Research Project
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
1 202111-CMBXX-0003

良質静水圧下での物性測定法の開発

村田 惠三

大阪公立大学

Development of a method for measuring physical
Keizo Murata

Osaka Metropolitan University

上床 美也

Toru Shigeoka

Yamaguchi University

上床 美也

Naoki Fujiwara

Kyoto University

上床 美也

properties under high-quality hydrostatic pressure
2 202111-CMBXX-0005

希土類化合物の良質試料作製

繁岡 透

山口大学

Preparation of high-quality samples of rare earth
compounds
3 202111-CMBXX-0006

圧力下NMR測定法に関する開発

藤原 直樹

京都大学

Development of NMR measurement method underhigh pressure
4 202111-CMBXX-0007
5 202111-CMBXX-0009

極低温下の磁気特性
希釈冷凍機温度での高圧発生装置の開発

鳥塚 潔
松林 和幸

千葉工業大学
電気通信大学

Development of magnetic measurement method

Kiyoshi Torizuka Chiba Institute of Technology

Development of high pressure apparatus for low

Kazuyuki

The University of Electro-

temperature

Matsubayashi

Communications

上床 美也
上床 美也

Research Institute for
6 202111-CMBXX-0012

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

7 202111-CMBXX-0013

低次元有機物質の圧力下物性研究糸井 充穂

東京都市大学

Study on pressure induced superconductivity of low

Engineering and Technology,

上床 美也

Tohoku Gakuin University
Miho Itoi

Tokyo City University

上床 美也

Tetsujiro Eto

Kurume Institute of Technology

上床 美也

Kazuhiro Nawa

Tohoku University

眞弓 皓一

Masaki Fujita

Tohoku University

眞弓 皓一

dimension organic conductor
8 202111-CMBXX-0014

高圧下Ｘ線回折測定法の開発

江藤 徹二郎

久留米工業大学

Development of High Pressure X-ray diffraction
measurements
9 202112-CMBXX-0042
10 202112-CMBXX-0043

4Gにおける共同利用推進(C)６G、T1-2、T1-3における共同利用推進(A)

那波 和宏
藤田 全基

東北大学
東北大学

Research and Support of General-Use at 4G(C)Research and Support of General-Use at ６G, T1-2
and T1-3(A)11 202112-CMBXX-0045

６G、T1-2、T1-3における共同利用推進(C)池田 陽一

東北大学金属材料研究所

Research and Support of General-Use at ６G, T1-2
Yoichi Ikeda
and T1-3(C)12 202112-CMBXX-0046

６G、T1-2、T1-3における共同利用推進(D)谷口 貴紀

Institute for materials research,
眞弓 皓一Tohoku university

Research and Support of General-Use at ６G, T1-2

Takanori

and T1-3(D)Taniguchi

東北大学

Tohoku University

眞弓 皓一Institute of Multidisciplinary
Terutoshi
13 202112-CMBXX-0054

T2-2における共同利用推進(B)坂倉 輝俊

東北大学多元物質科学研究所

Research and Support of General-Use at T2-2(B)Research for Advanced
Sakakura

眞弓 皓一Materials, Tohoku University
Masaaki
14 202112-CMBXX-0056

C1-2における共同利用推進(A)

杉山 正明

京都大学

Research and Support of General-Use at C1-2(A)Kyoto University

眞弓 皓一

Rintaro Inoue

Kyoto University

眞弓 皓一

Ken Morishima

Kyoto University

眞弓 皓一

Sugiyama
15 202112-CMBXX-0057

C1-2、C2-3-1における共同利用推進井上 倫太郎京都大学

Research and Support of General-Use at C1-2 andC2-3-1
16 202112-CMBXX-0058
17 202112-CMBXX-0059

C1-2における共同利用推進(B)C1-2における共同利用推進(C)守島 健
Li Xiang

京都大学
北海道大学大学院先端生命科学

Research and Support of General-Use at C1-2(B)Research and Support of General-Use at C1-2(C)Li Xiang

研究院
18 202112-CMBXX-0060

C3-1-2における共同利用推進(A)

日野 正裕

京都大学

Faculty of Advanced Life眞弓 皓一
Science, Hokkaido University
Research and Support of General-Use at C3-1-2(A)Masahiro Hino

Kyoto University

眞弓 皓一

19 202112-CMBXX-0015

超強磁場におけるスピン格子強結合系の研究

池田 暁彦

Study of the strongly spin-lattice-coupled systems in

電気通信大学Akihiko Ikeda

ultrahigh magnetic fields
20 202112-CMBXX-0016

21 202112-CMBXX-0020

高分解能光電子分光による強相関物質の研究
レーザースピン角度分解光電子分光による表面電横谷 尚睦

矢治 光一郎

岡山大学

22 202112-CMBXX-0021
23 202112-CMBXX-0022

有機化合物の光電子分光
反強磁性を示す近似結晶の精密光電子分光測定

Takayoshi

materials

YokoyaKoichiro Yaji

surfaces
金井 要
津田 俊輔

東京理科大学

Photoemission study on organic compounds
Laser-Photoemission Study on antiferromagnetic

物質・材料研究機構

光スピントロニクスに向けたスピン軌道ダイナミ
黒田 健太

広島大学

菅 滋正

大阪大学産業科学研究所

Studying spin-orbit dynamics for opt-spintronics

Okayama University

近藤 猛

National Institute for Materials
近藤 猛
Science
Kaname Kanai
Shunsuke Tsuda

approximant crystals
24 202112-CMBXX-0023

松田 康弘

Communications

Ultra-high resolution study on strongly correlated

SARPES studies of atomic layer materials at
物質・材料研究機構

子状態の研究

University of Electro-

Tokyo University of Science近藤 猛

National Institute for Materials
近藤 猛
Science
Kenta Kuroda

Hiroshima University

近藤 猛

ISIR, Osaka University

原田 慈久

クスの研究
Construction of a noble system for circular and25 202112-CMBXX-0033

軟Ｘ線発光×共鳴非弾性散乱分光の磁気円・線二linear dichroism in soft X-ray emission and RIXS

色性測定システムの構築

26 202112-CMBXX-0036

三次元nanoESCAによる実デバイスのオペランド電

spectroscopy
永村 直佳

物質・材料研究機構

子状態解析
27 202112-CMBXX-0039

液体ジェットを用いた金属タンパク質中の金属反藤井 健太郎28 202203-CMBXX-0064

第一原理計算基統計熱力学計算フレームワークのトポロジカル絶縁体Bi2Te3薄膜におけるスピン軌

Naoka

National Institute for Materials

actual devices by 3DnanoESCA

NAGAMURA

Science

Kentaro Fujii
centers in metalloproteins using liquid jets

笠松 秀輔

山形大学

高度化
29 202203-CMBXX-0067

Suga
Operando analysis of the electronic structure of

Electronic structure analysis of metal reaction
量子科学技術研究開発機構

応中心の電子状態解析

Shigemasa

八田 振一郎National Institutes for Science
原田 慈久
and Technology

First principles-based statistical thermodynamics

Shusukeframework

Kasamatsu

Studying spin-orbit dynamics of topological
京都大学

道ダイナミクスの1研究原田 慈久

Yamagata University

川島 直輝

Shinichiro Hatta Kyoto university

近藤 猛

insulator Bi2Te3 thin film

一般課題 / General Research Project
Member of reseach
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

担当所員
project

Elucidation of the electronic properties of the
配列制御された機能性有機分子結晶の電子特性解
1 202203-GNBXX-0080

岡 弘樹

大阪大学

赤井 亮太

明

organic molecular crystals with the controlled

Kouki Oka

Osaka University

So Yokomori

Rikkyo University

Ryota Akai

森 初果

molecular arrangements
Study of effects of a modulation/extension of alkyl
2 202205-GNBXX-0111

単一成分分子性導体における交換相互作用及び磁横森 創groups on magnetic properties and exchange

立教大学

気特性に与えるアルキル基変調・伸長効果の研究

森 初果

interactions in single-component molecular
conductors
辻 貴丹

Kitami Tsuji

木元 大介
3 202111-GNBXX-0021

重い電子系希土類化合物における異方的量子臨界
河野 洋平

中央大学

綱島 海斗

現象の磁気的評価II

KIMOTO Daisuke
Magnetic properties of anisotropic quantum critical
Yohei Kono

Chuo University

Tsunashima Kaito

山下 穣

phenomena in a heavy-fermion metal II加藤 謙介

Kato Kensuke湯淺 翔平

Shohei Yuasa
High-resolution magnetization measurements on

4 202111-GNBXX-0040

局所反転対称性の破れたCe系超伝導体における極低温磁化測定清水 悠晴

東北大学金属材料研究所

佐藤 芳樹（東京理科大学）

cerium-based superconductors without localinversion symmetry

Yusei Shimizu

Tohoku University, Institute for

Yoshiki Sato (Tokyo

Materials Research

University of Science)

山下 穣

Magnetization measurements for tiny uranium5 202111-GNBXX-0041

希釈冷凍機を用いたウラン系微小純良単結晶試料
清水 悠晴

東北大学金属材料研究所の高感度磁化測定佐藤 芳樹（東京理科大学）

based single crystals using high-resolution

Yusei Shimizu

capacitors in dilution refrigerator

Tohoku University, Institute for

Yoshiki Sato (Tokyo

Materials Research

University of Science)

Tohoku University, Institute for

Yoshiki Sato (Tokyo

Materials Research

University of Science)

山下 穣

Development of new-type Faraday magnetization
6 202111-GNBXX-0071

新型ファラデー磁化測定セル及びdHvA用カンチレ
清水 悠晴

東北大学金属材料研究所

バーセルの開発

佐藤 芳樹（東京理科大学）

cell and cantilever torque cell for dHvA

Yusei Shimizu

measurements

山下 穣

High Energy Accelerator
7 202112-GNBXX-0057

スピン軌道結合金属Cd2Re2O7の酸素NMRと電流
瀧川 仁
誘起効果

高エネルギー加速器研究機構・

Oxygen NMR and current-induced effects in theMasashi

物質構造科学研究所

spin-orbit coupled metal Cd2Re2O7

Takigawa

Research Organization, Institute山下 穣of Materials Structure Science
Yusei Shimizu (Tohoku
8 202112-GNBXX-0068

カイラル構造を持つ磁性体の低温磁気特性

佐藤 芳樹

東京理科大学

清水 悠晴（東北大学金属 Low-temperature magnetic properties of chiral
材料研究所）

9 202206-GNBXX-0158

ウラン化合物超伝導体UTe2の極低温電子状態

芳賀 芳範

日本原子力研究開発機構

Opletal Petr

Yoshiki Sato

Tokyo University of Sciencemagnets
Low temperature electronic states of the uranium

University, Institute for山下 穣Materials Research)
Yoshinori Haga

Japan Atomic Energy Agency

clusters on the substrate and elucidation of the

Noriyuki

National Institute of Technology,

relation between the cluster structure and its

Tsukahara

Gunma College

Kan Nakatsuji

Tokyo Institute of Technology

Petr Opletal

山下 穣

compound superconductor UTe2
Establishment of selection method for atomic
10 202111-GNBXX-0005

基板における原子クラスター選別形成法の構築と,塚原 規志

群馬工業高等専門学校

クラスター構造と磁性の関係の解明

吉信 淳
magnetic properties
小森 文夫

11 202111-GNBXX-0025

微傾斜Si(111)√3×√3-B基板上に成長したBi(110)中辻 寬

東京工業大学

超薄膜の電子状態

12 202111-GNBXX-0026

SiC基板上に成長したグラフェンへのFeインターカ

長尾 俊佑
瓜生 瞳美

中辻 寬

東京工業大学

レーション

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

小森 文夫

Intercalation of Fe into graphene grown on a SiC

竹村 晃一

substrate

Shunsuke Nagao

吉信 淳

HITOMI URYU
Kan Nakatsuji

Tokyo Institute of Technology

Fumio Komori
吉信 淳
Koichi Takemura

Crystal Growth and Physical Properties at low
13 202111-GNBXX-0006

希土類金属間化合物および金属超伝導体の結晶育
海老原 孝雄静岡大学

成と低温電子物性篠田 高志
temperatures in rare earth intermetallic

Takao Ebihara

Shizuoka University

エスティアク アフメド

Takashi Shinoda
大谷 義近
Esteaque Ahmed
compounds and metallic superconductors
Development of the high mobility semiconductor

14 202110-GNBXX-0001

量子ホール効果のための高移動度半導体試料作製福田 昭

兵庫医科大学

samples for the quantum Hall state and theirと超低温での測定

15 202111-GNBXX-0003

二次元銅酸化物のホール係数測定 VI

Akira Fukuda

Hyogo College of Medicine

Shiro Kambe

Yamagata University

神戸 士郎

山形大学

川村 桂太

Hall coefficient measurement of 2D cuprates VI

南光 伸哉
16 202112-GNBXX-0037

17 202111-GNBXX-0007

グラフェン/超伝導炭化物/SiCの低温電気伝導測定

ケージドATPの光解離特性

勝本 信吾

measurements in very low temperature

乗松 航

樋山 みやび

名古屋大学

群馬大学

工藤 優斗

Keita Kawamura

勝本 信吾

SHINYA NANKOElectrical measurements of

Watarugraphene/superconducting-carbide/SiC

Norimatsu

Study for Photodissociation Properties of Caged

Nagoya University

勝本 信吾

Miyabi Hiyama

Gunma University

kudo yuto

秋山 英文

Miyabi Hiyama

Gunma University

katsumi keita

秋山 英文Miyabi Hiyama

Gunma University

Takahashi Yutaka

秋山 英文Miyabi Hiyama

Gunma Universitymasahiro harada

秋山 英文

ATP
Study of photodissociation for a new caged
18 202111-GNBXX-0008

新奇ケージドルシフェリン化合物の光解離測定

樋山 みやび群馬大学

勝見 渓太
compoundField measurements of bioluminescence and生物発光のフィールド画像計測と個体数解析法の19 202111-GNBXX-0009

樋山 みやび群馬大学

高橋 由太翔開発
20 202111-GNBXX-0014

水溶液におけるseMpaiの吸収特性

numerical image analysis for individual
discrimination

樋山 みやび

群馬大学

原田 昌拓

Absorption spectra of seMpai in aqueous solution

21 202111-GNBXX-0017

GaAs:N中の等電子トラップからの発光エネルギー

矢口 裕之

埼玉大学

の揺らぎ

矢野 裕子

Fluctuations in the emission energy of isoelectronic

伊藤 駿平

traps in GaAs:N

Hiroyuki Yaguchi Saitama University

Yuko Yano

秋山 英文

Shunpei Ito

Physical Properties of Spin-Orbit Coupled Magnets
22 202111-GNBXX-0019

超低温トポケミカル合成したスピン軌道結合磁性
原口 祐哉

東京農工大学

Synthesized by Ultralow Temperature

体の物性研究23 202111-GNBXX-0013

S置換したFeSeの高圧低温下NMR測定

Yuya Haraguchi

京都大学

Yu Zhongyu

NMR studies on S-substituted FeSe at high広井 善二
and Technology

Topochemical Manipulation
藤原 直樹

Tokyo University of Agriculture

Naoki Fujiwara

Kyoto University

Single crystals growth of (Ce1-xRx)PtGe2 and thierTomohito

Faculty of Engineering, Niigata

magnetic properties

NAKANO

University

Zhongyu Yu

上床 美也

Hayato Muto

上床 美也

pressures and low temperatures
24 202111-GNBXX-0016(Ce1-xRx)PtGe2の単結晶育成と磁気的性質

中野 智仁

新潟大学 工学部

武藤 颯人

Kiyoharu Uchima
内間 清晴（学校法人沖縄
25 202111-GNBXX-0030

擬三元化合物 Ce1-ｘLaｘNiC2の結晶育成と物質評
繁岡 透

山口大学

価4

キリスト教学院・沖縄キ
リスト教短期大学）

Crystal growth and characterization of pseudoToru Shigeoka

Yamaguchi University

ternary compounds Ce1-ｘLaｘNiC2 4(Okinawa Christian
上床 美也
Institute Okinawa
christian junior College)
Kiyoharu Uchima

内間 清晴（学校法人沖縄
26 202111-GNBXX-0031

CeNiC2の結晶育成と物質評価 2

繁岡 透

山口大学

キリスト教学院・沖縄キ Crystal growth and characterization of CeNiC2 2Toru Shigeoka

Yamaguchi University(Okinawa Christian
上床 美也
Institute Okinawa
リスト教短期大学）
christian junior College)
27 202111-GNBXX-0032

多型化合物RIr2Si2(R=希土類)の磁気特性7

内間 清晴

学校法人沖縄キリスト教学院・
繁岡 透（山口大学）
沖縄キリスト教短期大学
28 202111-GNBXX-0033

T型銅酸化物におけるスピン密度波秩序と超伝導の
谷口 貴紀

T型銅酸化物における対密度波の磁場依存性

王彤Kiyoharu Uchima
compounds RIr2Si2(R=Rare earth) 7

東北大学

一軸圧力依存性
29 202111-GNBXX-0036

Magnetic characteristics of polymorphic

Toru Shigeoka
上床 美也

Okinawa christian junior College (Yamaguchi University)

Spin density wave and superconductivity under

Takanoriaxial high-pressure in T-type cuprate

Taniguchi

Pair density wave under magnetic field in T-type
東北大学

Okinawa Christian InstituteTong Wang

Tohoku University

上床 美也

Tohoku University

上床 美也

cuprate
磁気クラスター多極子秩序候補物質Ce3TiSb5の圧
30 202112-GNBXX-0048

篠﨑 真碩

島根大学

31 202112-GNBXX-0049

YbH2+x の高圧下での輸送現象

中村 修

Electrical resistivity measurements of Ce3TiSb5

Masahirounder high-pressure

Shinozaki

Transport phenomena under high pressure ofNakamura

Okayama

YbH2+x

Osamu

Science

本山 岳

力下電気抵抗測定岡山理科大学

Shimane University

Gaku MOTOYAMA

University of

上床 美也

上床 美也
Study of pressure-induced quantum critical

強誘電体および反強誘電体における圧力下量子臨
32 202112-GNBXX-0055

Kenichiro
橋本 顕一郎東京大学

劉 蘇鵬

界現象の研究33 202112-GNBXX-0056
34 202112-GNBXX-0061

圧力媒体の特性の探索
ホイスラー化合物Fe3-xMnxSiの圧力下磁気相転移

phenomena in ferroelectric and antiferroelectricmaterials

村田 惠三
廣井 政彦

大阪公立大学
鹿児島大学

The University of Tokyo

Search for New Properties of High Pressure Medium Keizo Murata
赤石 幸起

Magnetic phase transitions under pressure in

SUPENG LIU

上床 美也

Hashimoto
Osaka Metropolitan University

Masahiko HIROI Kagoshima University

上床 美也
Kouki Akaishi

上床 美也

Yamaguchi University

Rei Gotanda

上床 美也

Yamaguchi University

Rei Gotanda

上床 美也

Yamaguchi University

reo niiya

上床 美也

Yamaguchi University

reo niiya

上床 美也

Heuser compounds Fe3-xMnxSi
35 202112-GNBXX-0062

不定比化合物GdCrxGe2化合物の単結晶育成

藤原 哲也

山口大学

五反田 礼

Single crystal growth of non stoichiometricTetsuyacompounds GdCrxGe2

Fujiwara

Magnetization measurements of non stoichiometric Tetsuya
36 202112-GNBXX-0063

37 202112-GNBXX-0064

38 202112-GNBXX-0065

不定比化合物GdCrxGe2単結晶の磁化測定

不定比化合物TbCrxGe2化合物の単結晶育成

不定比化合物TbCrxGe2単結晶の磁化測定

藤原 哲也

藤原 哲也

藤原 哲也

山口大学

山口大学

山口大学

五反田 礼

新谷 怜和

新谷 怜和

GdCrxGe2 single crystals

Fujiwara

Single crystal growth of non stoichiometricTetsuyacompounds TbCrxGe2

Fujiwara

Magnetization measurements of non stoichiometric Tetsuya
TbCrxGe2 single crystals

Fujiwara

39 202112-GNBXX-0066

Ni2In型強磁性体の自発磁化の圧力効果

安達 義也

Pressure effects on the spontaneous magnetization

山形大学

Yoshiya Adachi

Yamagata University

上床 美也

for Ni2In-type ferromagnets
Central Institute of
40 202112-GNBXX-0072

ウラン化合物の磁性の圧力効果

本多 史憲

九州大学アイソトープ統合安全

Effect of Pressure on the magnetism of uranium

管理センター

compounds

Fuminori Honda

Radioisotope Science and上床 美也
Safety Management, Kyushu
University

41 202112-GNBXX-0075

高スピン分極ホイスラー合金における圧力誘起量
重田 出

鹿児島大学

青島 英樹

子臨界現象の探索
42 202204-GNBXX-0085
43 202204-GNBXX-0086

CeCoSiの高圧下における単結晶精密構造解析
Eu3Bi2S4F4における圧力効果の研究Ⅱ

Search for pressure-induced quantum critical
Iduru Shigeta

Kagoshima University

Aoshima Hideki

上床 美也

Muroran Institute of Technology Sae Nishiyama

上床 美也
上床 美也

phenomenon in highly spin polarized Heusler alloys
川村 幸裕
石垣 賢卯

室蘭工業大学西山 紗恵

東京理科大学

Structural refinement of CeCoSi single crystal under Yukihiropressure

Kawamura

Research of Eu3Bi2S4F4 in high pressureⅡ

Kento Ishigaki

Tokyo University of Science

metal-organic frameworks using single crystal X-ray Sang-Gyu KohTokyo University of Science

Elucidating confinement effect of ionic liquids in
44 202205-GNBXX-0108

単結晶X線構造解析による金属有機構造体へのイオ
高 相圭

東京理科大学

ン液体充填効果の解明

45 202206-GNBXX-0156

粉末X線回構造解析による金属有機構造体

常盤 和靖

木下 健太郎

東京理科大学Cu3(btc)2へのイオン液体導入効果の解明

46 202111-GNBXX-0010

47 202112-GNBXX-0050

新規トポロジカル磁性体の合成と磁気構造の解明
Ce5Si3-xGax及びCe5-xLaxSi3単結晶試料の極低温

大平 一路

車地 崇

小林 理気

東京大学

琉球大学

Elucidating the effect of introducing ionic liquids into

大平 一路

the metal-organic framework Cu3(btc)2 by powder

甲斐 洋行

X-ray structural analysis

有馬 孝尚

Magnetic structure analysis of novel topological

Takashi

徳永 祐介

magnets

Kurumaji

玉城 良仁

48 202112-GNBXX-0051

高エネルギーX線ラウエによるCe5-xLaxSi3単結晶

Low temperature specific heat measurement of

Sang-Gyu Koh
KentaroKinoshita

Ichiro Ohira

上床 美也

Hiroyuki Kai
The University of Tokyo

Taka-hisa Arima
益田 隆嗣
Yusuke Tokunaga

Riki Kobayashi

University of the Ryukyus

Tamashiro Yoshihito

益田 隆嗣

小林 理気

琉球大学

玉城 良仁

Assembly of Ce5-xLaxSi3 single crystal sample by
Riki Kobayashi

University of the Ryukyus

Tamashiro Yoshihito

益田 隆嗣

high energy X-ray Laue
高田 英行

Takada Hideyuki

奈良崎 愛子Aiko Narazaki

小川 博嗣
次世代レーザーとレーザー加工の基礎技術研究

Tokyo University of Science

Ce5Si3-xGax and Ce5-xLaxSi3 single crystals

試料のアセンブル

49 202111-GNBXX-0020

上床 美也
Kazuyasu Tokiwa

diffraction analysis
高 相圭

比熱測定

Ichiro Ohira

吉富 大

National Institute of Advanced

国立研究開発法人産業技術総合 寺澤 英知

Basic research on next generation laser systems and研究所

laser machining technology

澁谷 達則

Dai Yoshitomi

Industrial Science andHiroshi Ogawa
Eichi Terasawa小林 洋平
Tatsunori Shibuya

Technology

50 202111-GNBXX-0023

51 202111-GNBXX-0028

紫外光レーザー光源を用いた加工応用研究

レーザー誘起合金化のパルス時間幅依存性

藤本 靖

富田 卓朗

佐藤 大輔

Daisuke Satoh黒田 隆之助Ryunosuke Kuroda

田中 真人

Masahito Tanaka

千葉工業大学

徳島大学

河野 太洋

Research on laser processing application by

Yasushiultraviolet laser light source

Fujimoto

Pulse duration dependence of laser induced metal
Takuro Tomita

Chiba Institute of Technology

Tokushima University

小林 洋平

Taiyou Kawano

小林 洋平

alloying
Studies on nanostructured metals by ultrafast
52 202111-GNBXX-0034

金属ナノ構造の超高速発光による研究

末元 徹

電気通信大学

The University of ElectroSuemoto Tohru

luminescence spectroscopy
53 202112-GNBXX-0046

高分解能イメージングのためのファイバーレー
大間知 潤子

関西学院大学

ザーの最適化
54 202112-GNBXX-0070

超短パルスYbファイバーレーザー光源を用いた生体組織の分子振動イメージング

Optimization of fiber laser for high-resolution

小林 洋平
Communications

Junko Omachi

Kwansei Gakuin University

小林 洋平

imaging長島 優

浜松医科大学

Molecular vibrational imaging of biological tissues
using Yb fiber-based ultrashort pulse laser source

Yu Nagashima

Hamamatsu University Schoolof Medicine

小林 洋平

55 202112-GNBXX-0076

熱可塑性高分子におけるレーザー誘起構造変化

山口 誠

秋田大学

高林 圭佑

光によるハーフメタル強磁性体La1-xSrxMnO3のYamaguchi

polymers

MakotoAkita University

Keisuke Takabayashi

小林 洋平

Observation of NQP state in half metal
バルク敏感高分解能スピン分解角度分解光電子分
56 202112-GNBXX-0047

Laser-induced structural changes in thermoplastic

横谷 尚睦

岡山大学

NQP 状態の観測片岡 範行

ferromagnet La1-xSrxMnO3 by bulksensitive high-Takayoshi

瀬戸口 太朗resolution spin and angle resolved

YokoyaOkayama university

Noriyuki Kataoka
近藤 猛
Taro Setoguchi

photoemissionspectroscopy
57 202112-GNBXX-0069

Zr3SnC2のスピン分解角度分解光電子分光

伊藤 孝寛

名古屋大学

杉本 卓史

Spin- and Angle-resolved photoemission study of

三田 愛也

Zr3SnC2

Takahiro Ito

Nagoya University

takafumi sugimoto近藤 猛
Mita Manaya

Observation of topological vortex domains in
58 202110-GNBXX-0002

超高分解能PEEMによる反強磁性相のトポロジカル
溝川 貴司

早稲田大学

大川 万里生ボルテックス分域の観測59 202111-GNBXX-0029

赤外パルスレーザーにより励起したSmSにおける

PEEM
中村 拓人

大阪大学

光誘起ダイナミクス
60 202111-GNBXX-0035

カロリメトリによる金属試料の赤外吸収率測定

antiferromagnets by means of ultrahigh resolution

末元 徹

電気通信大学

Takashi

渡邊 浩

Photo-induced dynamics on SmS excited by

Takuto陳 奕同

infrared-pulse laser

Nakamura

森野 春樹

Measurement of infrared absorptivity on metal

Waseda University

Mario Okawa

岡﨑 浩三

Mizokawa

Suemoto Tohru
samples by calorimetry

Osaka University

Hiroshi Watanabe
岡﨑 浩三
Yitong CHEN
The University of ElectroHaruki Morino

岡﨑 浩三

Communications

Investigation of the photo-induced phase
61 202112-GNBXX-0067

励起子絶縁体Ta2NiSe5及び鉄系超伝導体FeSeにお久保田 雄也

理化学研究所transitions in an excitonic insulator Ta2NiSe5 and an Yuya Kubota

ける光誘起相転移の研究

62 202203-GNBXX-0082

二次高調波発生で調べる反強磁性体秩序における

RIKEN

岡﨑 浩三

Fe-based superconductor FeSe
黒田 健太

広島大学

反対称スピン軌道相互作用

大和田 清貴Investigation of antisymmetric spin-orbit coupling岩田 拓万

in antiferromagnets by second harmonic generation

分担者

Title

Kenta Kuroda

Hiroshima University

Kiyotaka Ohwada
松永 隆佑
Takuma Iwata

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

課題番号

課題名

氏名

所属

Name

Organization

Member of reseach
実験室
project
木村 真栄
1 202112-MCBXG-0030

極性と幾何学的フラストレーションを有する磁性
有馬 孝尚

東京大学

徳永 祐介

体の電気磁気効果

Shin-Ei Kimura
Magnetoelectric Effect in Polar Magnets with
Taka-hisa Arima The University of Tokyo

2 202112-MCBXG-0033

Co基ホイスラー合金におけるマルテンサイト変態

Yusuke Tokunaga

X線測定室

Geometrical Frustration
石崎 大悟
重田 出

鹿児島大学

青島 英樹

材料の探索

Daigo Ishizaki
Search for materials with the Martensitic
Iduru Shigeta

Kagoshima University

Aoshima Hidekiy

X線測定室

Makoto Akizuki

The University of TokyoYONGXU WANG

電子顕微鏡室Kiwamu Sue

AISTYoko Mitarai

The University of Tokyo

transformation in Co-based Heusler alloys
Use of multi-stage reactors for supercritical

3 202111-MCBXG-0008

超臨界水熱合成における多段反応器の利用

秋月 信

東京大学

王 咏旭
hydrothermal synthesis
Development of continuous process for ceramics

4 202111-MCBXG-0013

セラミックスナノ粒子の連続製造技術開発

陶究

産業技術総合研究所

電子顕微鏡室nanoparticles production
5 202112-MCBXG-0021

耐熱材料の微細組織解析

御手洗 容子

東京大学

松永 紗英

Microstructure analysis of high-temperature

石田 雄士

materials

Sae Matsunaga
電子顕微鏡室Yuji Ishida

Magnetism and thermoelectric properties at high
6 202110-MCBXG-0001

Nd1-x(Sr1-yCay)xFeO3 (0.1≦x≦0.9, y=0.9) の高温
中津川 博

横浜国立大学

鎌谷 雄大

における磁性と熱電特性に関する研究

7 202110-MCBXG-0006

新規トポロジカル磁性体の合成と物性開拓

temperature in Nd1-x(Sr1-yCay)xFeO3 (0.1≦x≦0.9, y=0.9)

車地 崇

HiroshiYokohama National University

Yudai Kamatani

電磁気測定室Nakatsugawa

有馬 孝尚

Materials development for novel topological

Takashi

徳永 祐介

magnets

Kurumaji

東京大学

Taka-hisa Arima
The University of Tokyo

電磁気測定室Yusuke Tokunaga

Synchrotron X-ray diffraction study on Rhodium
8 202111-MCBXG-0002

高圧下で超伝導-絶縁体転移を示すロジウムスピネ
片山 尚幸

名古屋大学

小島 慶太

ルの放射光X線構造研究

Spinel compounds which exhibit a

Naoyukisuperconductivity to insulator transition under

Katayama

Nagoya University

Keita Kojima

電磁気測定室pressure
9 202111-MCBXG-0005

10 202111-MCBXG-0015

二次元銅酸化物の磁化率測定 II

3d電子系におけるスピン軌道結合磁性の開拓

神戸 士郎

原口 祐哉

山形大学

川村 桂太

Magnetic susceptibility measurement of 2D

南光 伸哉

cuprates II
Exploring spin-orbit coupled magnetism in 3d

東京農工大学

Shiro Kambe

スピン液体”擬態”物質における磁気秩序の観測の試
原口 祐哉

An attempt to observe magnetic ordering in spin
東京農工大学みKeita Kawamura
電磁気測定室SHINYA NANKO
Yuya Haraguchi

electron systems
11 202111-MCBXG-0017

Yamagata University
Tokyo University of Agriculture

電磁気測定室and Technology

Yuya Haraguchi
liquid "mimicries"

Tokyo University of Agriculture
電磁気測定室and Technology

Crystal growth and physical properties
12 202112-MCBXG-0022

奇パリティ磁気多極子秩序を持つ物質の単結晶育
阿部 伸行

日本大学

岩﨑 義己

成と物性評価measurement in odd parity multipole ordering

Nobuyuki Abe

Nihon University

車地 崇
13 202112-MCBXG-0028

鉄ペロブスカイトにおける電気磁気熱量効果の開
有馬 孝尚

東京大学

発

14 202112-MCBXG-0031

ホイスラー化合物での反強磁性の研究

IWASAKI Yoshiki

電磁気測定室materials

池田 凜太郎
徳永 祐介

廣井 政彦

Takashi Kurumaji
Exploration of electromagnetocaloric effect inperovskite ferrites
Study on antiferromagnetism in Heusler

鹿児島大学

Taka-hisa Arima The University of Tokyo

rintaro ikeda

電磁気測定室Yusuke Tokunaga
Masahiko HIROI Kagoshima University

電磁気測定室compounds
Study on analysis of magnetic properties for highly
15 202112-MCBXG-0032

高スピン分極ホイスラー合金の磁気特性のスピン
重田 出

鹿児島大学

青島 英樹

ゆらぎ理論による解析に関する研究

spin polarized Heusler alloys by the spin fluctuation Iduru Shigeta

Kagoshima University

淡路 功太
16 202111-MCBXG-0014

第13族元素を充填した新規スクッテルダイト型熱関根 ちひろ室蘭工業大学

電材料の高圧合成

High-pressure synthesis of new skutterudite-type

寺坂 聡志

thermolectric materials filled with group 13 element

Chihiro Sekine

Muroran Institute of Technology

高温高圧下におけるFe-Si-H三元系における水素原

SEIYA ARAI

Tatsuya Nagase
Mori Yuichiro

森 悠一郎
鍵 裕之

東京大学

子の占有サイトと水素誘起体積膨張係数の解明

volume expansion rate in Fe-Si-H ternary system at Hiroyuki Kagi
飯塚 理子（早稲田大学）

The University of Tokyohigh pressure and high temperature

Riko Iizuka-Oku (Waseda

今井 良宗

東北大学

佐藤 楓貴

高圧合成室

University)

High pressure synthesis of RuBr3 and RuI3 with the
ハニカム格子を持つRuBr3とRuI3の高圧合成

高圧合成室

Satoshi Terasaka

Site occupancy of hydrogen and hydrogen-induced

18 202112-MCBXG-0024

電磁気測定室Awaji Kouta

新井 聖也

長瀬 竜也

17 202112-MCBXG-0035

Aoshima Hideki

theoryX線測定室、高Yoshinori Imai

Tohoku university

Fuki Satohoneycomb structure

圧合成室

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

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
実験室
project
1 202203-MCBXU-0042

六方晶ペロブスカイト型イリジウム酸化物
松平 和之

九州工業大学井上 正弥

Ba4BiIr3O12の単結晶育成

Single Crystal Growth of 12L Hexagonal Perovskite

KAZUYUKI

Ir oxide Ba4BiIr3O12

MATSUHIRA

Kyushu Institute of Technology

Masaya Inoue

物質合成室

Exploration of new materials with magnetic
2 202207-MCBXU-0101

巨大な創発電磁場を伴う新規スキルミオン物質の高木 里奈

東京大学物性研究所

skyrmions generating large emergent

開拓3 202203-MCBXU-0043

電気トロイダル秩序候補物質Ca5Ir3O12の単結晶
構造解析

Takagi Rina

ISSP The University of Tokyo

化学分析室

electromagnetic fields
松平 和之

九州工業大学

花手 洋樹

Crystal Structure Analysis of Electric Toroidal

KAZUYUKI

Ordering Candidate Ca5Ir3O12

MATSUHIRA

Kyushu Institute of Technology

Hiroki Hanate

X線測定室

王 陽明

Yangming Wang

Feng Zili
4 202203-MCBXU-0044

巨大異常ネルンスト効果を示す新規トポロジカル
酒井 明人

東京大学

磁性体開発

松尾 拓海
上杉 良太

Zili Feng
Search for new topological magnets exhibiting the
Akito Sakai

The University of Tokyo

giant anomalous Nernst effectyuto kajiwara

矢口 宏
超伝導体転移温度に対する軸性圧力効果の検証

栗原 綾佑

東京理科大学

小暮 琉介
高橋 龍生

6 202205-MCBXU-0051

5d電子系における多極子物性の研究

平井 大悟郎

名古屋大学

電子顕微鏡室Ryota Uesugi

梶原 悠人

5 202204-MCBXU-0045

Takumi Matsuo

Hiroshi Yaguchi
Pressure dependence of superconducting transition Ryosuke
temperatrue

Kurihara

Multipolar physics in 5d electron systems

Daigorou Hirai

Tokyo University of Science

Ryusuke Kogure

電磁気測定室Ryusei Takahashi
電磁気測定室、
Nagoya University
光学測定室

国際超強磁場科学施設 / International MegaGauss Science Laboratory
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
Physical Properties at high magnetic fields in rare
1 202111-HMBXX-0001

希土類金属間化合物および金属超伝導体の結晶育
海老原 孝雄静岡大学

成と強磁場物性研究篠田 高志
エスティアク アフメド

earth intermetallic compounds and metallic super

Takao Ebihara

Shizuoka University

Takashi Shinoda
金道 浩一
Esteaque Ahmed
conductors
Search for a superconducting state under high

2 202112-HMBXX-0020

λ型有機導体における強磁場超伝導状態の探索と福岡 脩平

magnetic fields and study of the critical endpoint
北海道大学

超音波測定を用いた臨界終点の研究

Shuhei Fukuoka Hokkaido University

金道 浩一

using ultrasound measurements in λ-type organic
conductors
High field magnetizations in kagome lattice

カゴメ格子反強磁性フッ化物と層状遍歴磁性体の3 202112-HMBXX-0022

森山 広大
道岡 千城

京都大学

強磁場磁化過程
有機ラジカルからなるフラストレート磁性体の強4 202112-HMBXX-0024

山口 博則

Michioka
antiferromagnetic fluorides and layered itinerant

吉永 公平
magnets

Kodai Moriyama
Kyoto University

Chishiro
High-field magnetic properties of frustrated

Hironorimaterials composed of organic radicals

Yamaguchi

大阪公立大学金道 浩一
Kohei YOSHINAGA

Osaka Metropolitan University

磁場物性

金道 浩一

Investigation of the change of Fermi surface in有機超伝導体λ-(BETS)2GaCl4のフィリング制御に
5 202112-HMBXX-0026

小梁川 響子
小林 拓矢

埼玉大学

よるフェルミ面の変化の検証

Takuyaorganic superconductor λ-(BETS)2GaCl4 by filling

安村 乃絵瑠control

Kyoko Koyanagawa
Saitama

University

Kobayashi

金道 浩一
Noeru Yasumura

High-field superconductivity in organic
6 202112-HMBXX-0028

乱れを導入した有機超伝導体における強磁場超伝
杉浦 栞理

東北大学 金属材料研究所

superconductors with artificially introduced

Shiori Sugiura

導状態

Institute for Materials Research,
金道 浩一
Tohoku University
disordersUltra-high-field magnetization measurement on

7 202112-HMBXX-0031

カゴメ反強磁性体CaCu3(OH)6Cl2•0.6H2Oの超強

吉田 紘行

北海道大学

quantum kagome antiferromagnet CaCu3(OH)6Cl2

磁場磁化測定8 202111-HMBXX-0009

高磁場・低温におけるThCr2Si2型Eu化合物の磁化
特性•0.6H2O
酒井 英明

大阪大学

湯浅 直輝

High-field magnetic properties for ThCr2Si2-type
Eu-based compounds

Hiroyuki Kura

Hokkaido University

松田 康弘

YoshidaHideaki Sakai

Osaka University

Naoki Yuasa

徳永 将史

kazuo yano (University of
矢野 一雄（筑波大学）
9 202111-HMBXX-0018

希土類化合物RERu2Si2の強磁場磁化過程

原 嘉昭

国立高等専門学校機構

茨城工 喜多 英治（筑波大学）

業高等専門学校

雨海 有佑（室蘭工業大

Tsukuba)High field magnetization process in rare-earth
Yoshiaki Hara
compound RERu2Si2

National Institute of Technology Eiji Kita (University of(KOSEN), Ibaraki College

学）

徳永 将史
Tsukuba)
Yusuke Amakai(MuroranInstitute of Technology)

10 202111-HMBXX-0019

励起子絶縁体候補物質Ta2NiSe5における強磁場下
広瀬 雄介

新潟大学

土田 駿

電気抵抗測定11 202112-HMBXX-0021

V-Vダイマーを持つイルメナイト型バナジウム酸化

新規ラクナスピネル化合物の強磁場下での物性

Yusuke Hirose

Niigata University

Shun Tsuchida

徳永 将史

多元物質科学研究所

Kamiyama Sachiko

徳永 将史

Tokyo University of Agriculture

Yuya Haraguchi

and Technology

Kensuke Ito

Ta2NiSe5
山本 孟

東北大学

上山 幸子

物の電子相転移12 202112-HMBXX-0023

High-field magnetoresistance of excitonic insulator

香取 浩子

東京農工大学Electronic phase transition in ilmenite-type

Hajimevanadates possessing V-V dimers

Yamamoto

原口 祐哉

Physical properties of novel lacunar spinel

伊東 賢佑

compounds under high magnetic fields

Hiroko Katori

徳永 将史

Central Institute of
13 202112-HMBXX-0034

反強磁性体UPt3All5の強磁場下磁化測定

本多 史憲

九州大学アイソトープ統合安全High-field magnetization measurement on a new

管理センターantiferromagnet UPt3Al5

Fuminori Honda

Radioisotope Science and徳永 将史
Safety Management, Kyushu
University

14 202112-HMBXX-0029

擬多重項系近藤合金(Lu,Yb)Rh2Zn20における磁気
北澤 崇文

東北大学

池田 陽一

異方性

Magnetic anisotropy in quasi-degenerate Kondo

Kitazawa

alloy (Lu,Yb)Rh2Zn20

Takafumi

Tohoku university

Yoichi Ikeda

小濱 芳允

Observation of preformed Cooper pairing in high15 202203-HMBXX-0036

パルス強磁場中c軸抵抗率測定による銅酸化物高温
渡辺 孝夫

藤井 武則（低温科学研究 Tc cuprates using out-of-plane resistivity
弘前大学

超伝導体における前駆クーパー対形成の検証

センター）

Takao
Hirosaki University

measurements of Bi(Pb)-2212 single crystals under Watanabe

Takenori Fujii (Cryogenic
金道 浩一
Research Center)high pulsed magnetic fields
16 202204-HMBXX-0039

CoOナノ結晶の比熱測定

石渡 洋一

佐賀大学

Heat capacity measurements of CoO nanocrystals

Yoichi Ishiwata

Lee Chanhyeon ( Chung17 202206-HMBXX-0084

Identifying magnetization plateaus in the Kagome

Choi Kwang-

antiferromagnet YCu3(OD)6+xBr3-x

Yong

Sungkyunkwan University

Saga University
Department of Physics,

Ang University)

Identifying magnetization plateaus in the Kagome

Kwang-Yong

Jeon Sungmin

antiferromagnet YCu3(OD)6+xBr3-x

Choi

Sungkyunkwan University,
Republic of Korea

Lee Seung-Yeol
18 202202-HMBXX-0035

強磁場下でのキラリティ誘起スピン偏極

宍戸 寛明

Ang University)

松田 康弘

Sungmin Jeon
Seung-Yeol Lee

Chirality induced spin polarization under high大阪公立大学金道 浩一
Chanhyeon Lee ( Chung-Hiroaki Shishido Osaka metropolitan university

徳永 将史

magnetic fields
19 202204-HMBXX-0042

20 202204-HMBXX-0043

PPMSを使った極低温イメージングシステムの開発 志村 恭通

パルス強磁場下超音波計測による強相関電子系の

栗原 綾佑

広島大学

渡邉 寛大

東京理科大学

磁場中量子状態

Development of Very-Low Temperature Imaging

Yasuyuki

System in PPMS

Shimura矢口 宏

Ultrasonic study of quantum states in strongly-

小峰 智弥

correlated electron systems under pulsed-magnetic

島根 恭汰

fieldsHiroshima University

Kanta Watanabe

徳永 将史

Hiroshi Yaguchi
RyosukeTokyo University of Science

Kurihara

Tomoya Komine

徳永 将史

Kyota Shimane
Institute for Materials Chemistry

21 202204-HMBXX-0046

単一分子磁石の磁場誘起分極変化

呉 樹旗

九州大学

先導物質化学研究所 徐 文煌Magnetic Field-Induced Polarization Change in
Shu-Qi Wu
Single-Molecule Magnets
Exploring the origin of giant anomalous Hall effectin noncoplanr magnetic state of electron doped
kagome magnet Mn3Sn

Wenhuang Xu

徳永 将史

University

Exploring the origin of giant anomalous Hall effectNational Institute of Science

22 202205-HMBXX-0059

and Engineering, Kyushu

Nayak Ajaya

Ajaya Kumar

National Institute of Science

Nayak

Education and Researchin noncoplanr magnetic state of electron doped
Education and Researchkagome magnet Mn3Sn

徳永 将史

23 202207-HMBXX-0085

High-field magnetization and magnetocaloric-effect

WANG Zhe

High-field magnetization and magnetocaloric-effectTU Dortmund University

measurements of a spin-chain compound

WANG Zhe

TU Dortmund University

Name

Organization

小濱 芳允

measurements of a spin-chain compound

大阪大学大学院理学研究科附属先端強磁場科学研究センター / Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University
No.

課題番号

課題名

氏名

所属

分担者

Title

Member of reseach
担当所員
project
1 202111-HMOXX-0002

スピン磁気モーメントのみのEuとGd化合物の特異
竹内 徹也

大阪大学

な磁性と強磁場物性2 202111-HMOXX-0003

量子スピン系の電場励起ESRと方向二色性

木村 尚次郎大貫 惇睦（東京都立大Characteristic magnetic properties and high-field

Tetsuya学）

magnetism in the S-state Eu and Gd compounds.

TakeuchiElectric dipole active ESR and nonreciprocal
東北大学

Shojiro Kimura

Osaka University

Yoshichika Onuki (Tokyo

萩原 政幸（大阪

Metropolitan University)

大学）
萩原 政幸（大阪

Tohoku University

directional dichroism in quantum spin systems
3 202111-HMOXX-0005

FCCフラストレート磁性体RInCu4のパルス強磁場
和氣 剛

京都大学

塩谷 太基

下ホール抵抗測定
4 202111-HMOXX-0006

パルス強磁場用極低温実験装置の開発

Pulse High-field Hall resistivity of FCC frustrated

大学）
Takeshi Waki

Kyoto University

Taiki Shiotani

magnets RInCu4
野口 悟

大阪公立大学吉田 勝一

Development of the cryostat for pulsed high大学）
Satoru Noguchi Osaka Metropolitan University

Shoichi Yoshidamagnetic field
5 202111-HMOXX-0007

種々の新型磁気力ブースターの性能試験

牧祥

Performance test of various types of new magnetic
岡山理科大学6 202111-HMOXX-0011

ハニカムネットワークを持つ超伝導物質の開発

工藤 一貴

大阪大学

Syou Maki

萩原 政幸（大阪
Okayama University of Science
大学）
Kazutaka Kudo

萩原 政幸（大阪
Osaka University

honeycomb networks
7 202111-HMOXX-0012

CdI2型構造を持つ超伝導体の物質開発

工藤 一貴

Development of novel superconductors with a
大阪大学

大学）
Kazutaka Kudo

萩原 政幸（大阪
Osaka University

CdI2-type structure
8 202111-HMOXX-0013

強いスピン-軌道相互作用を活かした酸化物スピン
松野 丈夫

大阪大学

トロニクス
9 202112-HMOXX-0014

パルス強磁場を用いた高圧下ESR装置の開発と圧力

塩貝 純一
Oxide spintronics utilizing strong spin-orbit coupling Jobu Matsuno

櫻井 敬博

神戸大学

赤木 暢（東北大学）

Takahiro

セルの最適化

pulsed high fields and optimization of pressure cell Sakurai

電荷密度波磁性半導体の異方的な磁気抵抗効果のStudy for the anisotropic magnetoresistance inHiroshichargedensity wave semiconductor

Murakawa

10 202112-HMOXX-0017

村川 寛

大阪大学

有機無機層状磁性体の圧力下における磁性

Osaka University

本多 善太郎Kobe University

Junichi Shiogai

萩原 政幸（大阪

Kohei Ueda

大学）

Mitsuru Akaki (Tohoku

萩原 政幸（大阪

University)

大学）
萩原 政幸（大阪

Osaka University

研究11 202112-HMOXX-0027

大学）

上田 浩平
Development of high-pressure ESR system used in

萩原 政幸（大阪大学）

force boosters
Development of novel superconductors with萩原 政幸（大阪

Magnetic properties of organic-inorganic layered
埼玉大学

Zentaro Honda

大学）
萩原 政幸（大阪
Saitama University

magnets under pressure

大学）

Transport measurements on micro-structured
12 202112-HMOXX-0030

非従来型超伝導体微細構造のパルス強磁場下輸送
掛谷 一弘

京都大学

unconventional superconductors under pulsed high Itsuhiro Kakeya

特性萩原 政幸（大阪
Kyoto University
大学）

magnetic fields

強磁場コラボラトリー / The High Magnetic Field Collaboratory
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
1 202204-HMBXX-0040

光駆動型有機FET界面におけるフェルミオロジーと
木俣 基

東北大学

強磁場超伝導相
2 202112-HMCXX-0025

強磁場NMR測定によるカゴメ遍歴磁性体における磁場誘起磁気相の研究

Fermiology and high-field superconducting phase inMotoi Kimata

Tohoku University

徳永 将史

Yoshihiko Ihara

Hokkaido University

小濱 芳允

photo-induced organic FET interface
井原 慶彦

北海道大学大学院

High-field NMR study for field-induced magnetic
states in itinerant kagome magnets

3 202204-HMCXX-0041

定常・準定常・パルス強磁場下における精密熱輸
木原 工

岡山大学異分野基礎科学研究所

送測定系の開発

Development of a thermal transport measurement

Research Institute forsystem in the steady, quasi-steady, and pulsed high Takumi KiharaInterdisciplinary Science,magnetic fields

Okayama University

小濱 芳允

留学研究課題（External Research Project Long / Short -term）
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
1 202111-VSBXS-0001

ホタルルシフェラーゼ環境下における
大澤 敬太

群馬大学院理工学府

AkaLumine の吸光度測定
2 202111-VSBXS-0002

DEACM-ケージドルシフェリン光解離におけるUV
光条件

In situs absorption spectra for AkaLumine in firefly
Osawa Keita

Gunma University

秋山 英文

Gunma University

秋山 英文

luciferase
松永 大輝

群馬大学

Study for UV irradiation condition on the

Hirokiphotodissociation of DEACM caged D-luciferin

Matsunaga

2022年度

共同利用課題一覧（後期）/ Joint Research List 2022 (Latter Term)※実施課題一覧、所属は申請時のデータ

嘱託課題 / Comission Research Project
Member of reseach
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

担当所員
project

1 202206-CMBXX-0125

ハライドペロブスカイト単結晶薄膜を用いたレー
高橋 竜太

日本大学

ザー開発
2 202206-CMBXX-0111

高圧下Ｘ線回折法の開発

Development of Halide Perovskite Single Crystal
Ryota Takahashi Nihon University

Mikk Lippmaa

Tetsujiro Eto

上床 美也

Film Laser
江藤 徹二郎

久留米工業大学

Development of High Pressure X-ray diffraction

Kurume Institute of Technology

measurements
3 202206-CMBXX-0112

極低温下の磁気特性

鳥塚 潔

千葉工業大学4 202206-CMBXX-0113

低次元有機物質の圧力下物性研究

糸井 充穂

日本大学

Development of magnetic measurement method

Kiyoshi Torizuka Chiba Institute of Technology

上床 美也

Miho Itoi

上床 美也

Study on pressure induced superconductivity of low
Nihon University

dimension organic conductor
Research Institute for
Takeshi
5 202206-CMBXX-0114

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

Engineering and Technology,
Kanomata

6 202206-CMBXX-0117

7 202206-CMBXX-0118

希釈冷凍機温度での高圧発生装置の開発

高圧下量子振動観測システムの開発

松林 和幸

摂待 力生

電気通信大学

新潟大学

上床 美也

Tohoku Gakuin University

Development of high pressure apparatus for low

Kazuyuki

The University of Electro-

temperature

Matsubayashi

Communications

Rikio Settai

Niigata University

上床 美也

Naoki Fujiwara

Kyoto University

上床 美也

Toru Shigeoka

Yamaguchi University

上床 美也

Masato Hedo

University of the Ryukyus

上床 美也

Keizo Murata

Osaka Metropolitan University

上床 美也

Development of quantum oscillation under high上床 美也

pressure
8 202206-CMBXX-0119

圧力下NMR測定法に関する開発

藤原 直樹

京都大学

Development of NMR measurement method underhigh pressure
9 202206-CMBXX-0120

希土類化合物の良質試料作製

繁岡 透

山口大学

Preparation of high-quality samples of rare earth
compounds
10 202206-CMBXX-0121

低温物性測定法の開発

辺土 正人

琉球大学

Development of low temperature physicalproperty measurement method
11 202206-CMBXX-0122

良質静水圧下での物性測定法の開発

村田 惠三

大阪公立大学

Development of a method for measuring physicalproperties under high-quality hydrostatic pressure
12 202206-CMBXX-0126

マルチアンビル圧力装置の調整

高橋 博樹

日本大学

Adjustment of Multi-anvil pressure apparatus

Hiroki Takahashi Nihon University

上床 美也

13 202205-CMBXX-0069

4Gにおける共同利用推進(A)

佐藤 卓

東北大学

Research and Support of General-Use at 4G(A)Taku J Sato

Tohoku University

眞弓 皓一

14 202205-CMBXX-0070

4Gにおける共同利用推進(C)

那波 和宏

東北大学

Research and Support of General-Use at 4G(C)Kazuhiro Nawa

Tohoku University

眞弓 皓一

15 202205-CMBXX-0071

６G、T1-2、T1-3における共同利用推進(A)

藤田 全基

東北大学

Masaki Fujita

Tohoku University

眞弓 皓一

Yusuke Nambu Tohoku University

眞弓 皓一

Research and Support of General-Use at ６G, T1-2
and T1-3(A)16 202205-CMBXX-0072

６G、T1-2、T1-3における共同利用推進(B)

南部 雄亮

東北大学

Research and Support of General-Use at ６G, T1-2
and T1-3(B)Research and Support of General-Use at ６G, T1-2
17 202205-CMBXX-0073

６G、T1-2、T1-3における共同利用推進(C)池田 陽一

東北大学金属材料研究所

Institute for materials research,
Yoichi Ikeda

and T1-3(C)18 202205-CMBXX-0074

６G、T1-2、T1-3における共同利用推進(D)

谷口 貴紀

東北大学

眞弓 皓一
Tohoku university

Research and Support of General-Use at ６G, T1-2

Takanori

and T1-3(D)Taniguchi

Tohoku University

眞弓 皓一Institute of Multidisciplinary
19 202205-CMBXX-0082

T2-2における共同利用推進(B)坂倉 輝俊

東北大学多元物質科学研究所

Research and Support of General-Use at T2-2(B)Terutoshi
Research for Advanced
Sakakura
Materials, Tohoku University

眞弓 皓一

20 202205-CMBXX-0084

C1-2における共同利用推進(A)

杉山 正明

京都大学

Research and Support of General-Use at C1-2(A)Masaaki

Kyoto University

眞弓 皓一

Rintaro Inoue

Kyoto University

眞弓 皓一

Sugiyama
21 202205-CMBXX-0085

C1-2、C2-3-1における共同利用推進井上 倫太郎Research and Support of General-Use at C1-2 and京都大学

C2-3-122 202205-CMBXX-0086

C1-2における共同利用推進(B)

守島 健

京都大学

Research and Support of General-Use at C1-2(B)Ken Morishima

Kyoto University

眞弓 皓一

23 202205-CMBXX-0088

C3-1-2における共同利用推進(A)

日野 正裕

京都大学

Research and Support of General-Use at C3-1-2(A)Masahiro Hino

Kyoto University

眞弓 皓一Riichiro

Department of Nuclear

24 202205-CMBXX-0091

C3-1-2における共同利用推進(D)中村 吏一朗京都大学複合原子力科学研究所

Research and Support of General-Use at C3-1-2(D)NakamuraEngineering, Kyoto University

25 202205-CMBXX-0068

超強磁場におけるスピン格子強結合系の研究

池田 暁彦

Study of the strongly spin-lattice-coupled systems in

電気通信大学眞弓 皓一Akihiko Ikeda

ultrahigh magnetic fields
26 202205-CMBXX-0100

光スピントロニクスに向けたスピン軌道ダイナミ

黒田 健太

広島大学

矢治 光一郎物質・材料研究機構

Studying spin-orbit dynamics for opt-spintronics

University of Electro-

松田 康弘

Communications
Kenta Kuroda

Hiroshima University

近藤 猛

クスの研究
レーザースピン角度分解光電子分光による表面電27 202205-CMBXX-0103

SARPES studies of atomic layer materials at

28 202205-CMBXX-0109

三次元nanoESCAによる実デバイスのオペランド電

National Institute for Materials
Koichiro Yaji

子状態の研究surfaces
永村 直佳

物質・材料研究機構

子状態解析

近藤 猛
Science

Operando analysis of the electronic structure of

Naoka

National Institute for Materials

actual devices by 3DnanoESCA

NAGAMURA

Science

Title

Name

Organization

原田 慈久

一般課題 / General Research Project
No.

課題番号

課題名

氏名

所属

分担者

Member of reseach
担当所員
project
Study of effects of a modulation/extension of alkyl
1 202204-GNBXX-0089

単一成分分子性導体における交換相互作用及び磁横森 創groups on magnetic properties and exchange
立教大学

気特性に与えるアルキル基変調・伸長効果の研究

So Yokomori

Rikkyo University

森 初果

Kouki Oka

Osaka University

Ryota Akai

森 初果

Akira Ueda

Kumamoto University

Yuya Fujii

森 初果

interactions in single-component molecular
conductors

2 202204-GNBXX-0090

高いプロトン伝導度を示すスルホン酸有機塩の創
岡 弘樹

大阪大学

赤井 亮太

製

Conductivity

脱プロトン型の新規分子性伝導体の磁性・電気伝3 202205-GNBXX-0101

Elucidation of magnetic and electrical properties of
上田 顕

熊本大学

藤井 雄也

導性の解明
4 202210-GNBXX-0163

自己組織化ペプチド導入ニッケル錯体の電子物性

novel deprotonated molecular conductors
若林 里衣

Investigation of electronic properties of nickel

Rie

complexes modified with self-assembly peptides

Wakabayashi

今村 薫平

Study on crystal structure of the Kitaev spin liquid

Kenichiro

難波 隆一

candidate α-RuCl3

Hashimoto九州大学

評価
5 202210-GNBXX-0168

キタエフスピン液体候補物質α-RuCl3の結晶構造

Sulfonic Acid Organic Salts with High Proton

橋本 顕一郎東京大学

に関する研究

Kyushu University

The University of Tokyo

森 初果
Kumpei Imamura
森 初果
Ryuichi Namba

Development of a miniaturized high-precision
6 202205-GNBXX-0102

磁気トルクに強い小型高感度磁化測定装置の開発
河野 洋平

中央大学

湯淺 翔平

とベンチマーク測定

magnetometer robust to magnetic torque andYohei Kono

Chuo University

植田 大地（高エネルギー
加速器研究機構）
7 202205-GNBXX-0109

シャストリーサザーランド四面体格子Ce5Si3とCe5Ga2Geの極低温磁化測定

Shohei Yuasa

山下 穣

measurements for its performance

小林 理気

琉球大学

清水 悠晴（東北大学金属材料研究所）

Daichi Ueta (High Energy
Low-temperature magnetization measurements of
Shastry-Sutherland tetrahedron lattice Ce5Si3 andCe5Ga2Ge

Accelerator Research
Riki Kobayashi

University of the Ryukyus

Organization)Yusei
Shimizu (Tohoku
University)

山下 穣

Magnetization, heat-capacity, and magnetostriction
8 202210-GNBXX-0164

UTe2の純良単結晶試料を中心とするスピン三重項

清水 悠晴

measurements on spin-triplet superconductors:

東北大学金属材料研究所

超伝導体の磁化・比熱・磁歪測定

Yusei Shimizu

studies using high-quality UTe2 single crystalline

Tohoku University, Institute for山下 穣Materials Researchsamples
Crystal Growth and Physical Properties at low
9 202205-GNBXX-0093

希土類金属間化合物および金属超伝導体の結晶育
海老原 孝雄

静岡大学

荒川 尚也

成と低温電子物性

temperatures in rare earth intermetallic

Takao Ebihara

Shizuoka University

石原 滉大
10 202209-GNBXX-0160

カゴメ格子超伝導体におけるトポロジーと対称性

橋本 顕一郎

東京大学の破れに関する研究

エッジ制御したグラフェン素子における量子伝導

大谷 義近

Kota Ishihara

広瀬 夏彦

Study of topology and symmetry breaking in

Kenichiro

六本木 雅生kagome superconductors

Hashimoto

The University of Tokyo

原 正大

大谷 義近

SUPENG LIU
Quantum transport in edge-controlled graphene

熊本大学

Natsuhiko Hirose
Masaki Roppongi

劉 蘇鵬
11 202205-GNBXX-0096

Naoya Arakawa

compounds and metallic superconductors

Masahiro Hara

Kumamoto University

勝本 信吾

devices
内藤 聖羅
12 202205-GNBXX-0105

二次元銅酸化物のホール係数測定 VII

神戸 士郎

山形大学

加藤 貴大

Graduate School of Science and Seira Naito
Hall coefficient measurement of 2D cuprates VII

Shiro Kambe

荻野 拓哉
13 202206-GNBXX-0131

グラフェン/超伝導炭化物/SiCの低温電気伝導測定

乗松 航

名古屋大学

Engineering, Yamagata

Takahiro Kato

University

OGINO TAKUYA

Nagoya University

Otsuka Kohei

勝本 信吾

Takuro Dazai

勝本 信吾

Electrical measurements of

Watarugraphene/superconducting-carbide/SiC

Norimatsu

太宰 卓朗

Development of halide perovskite film laser

Ryota Takahashi Nihon University

小森 文夫

Intercalation of Fe into graphene grown on a SiC

竹村 晃一

substrate

大塚 康平

勝本 信吾

ハライドペロブスカイト薄膜を用いたレー
14 202209-GNBXX-0165

高橋 竜太

日本大学

中辻 寬

東京工業大学ザー開発
15 202205-GNBXX-0098

SiC基板上に成長したグラフェンへのFeインターカ
レーション
16 202205-GNBXX-0112

金属表面上へ担持した金属クラスターの触媒作用
塚原 規志

群馬工業高等専門学校の機能探索

Kan Nakatsuji

Tokyo Institute of Technology

Fumio Komori
吉信 淳
Koichi Takemura

Exploration of the catalytic property of the metal

Noriyuki

National Institute of Technology,

clusters on metal surfaces

Tsukahara

Gunma College

吉信 淳
Study of solid catalysts and reaction conditions

17 202205-GNBXX-0115

リグニンの有用化合物への変換を可能にする固体
布浦 鉄兵

東京大学環境安全研究センター 堂脇 大志

触媒及び反応条件の検討（４）18 202205-GNBXX-0117

二硫化モリブデンナノシートの製造に及ぼす超臨

異種二分膜におけるプロトン移動の実証と物性制

布浦 鉄兵

東京大学環境安全研究センター カン ジシン

21 202205-GNBXX-0103

22 202205-GNBXX-0123

水溶液におけるseMpaiの吸収特性
エルビウムドープIII-V族化合半導体の発光特性

新奇ケージドルシフェリン化合物の光解離測定

Effect of supercritical carbon dioxide on fabrication

加藤 浩之

Investigation of Proton Transfer and Property
大阪大学

Environmental Science Center,
Taishi Dowaki

吉信 淳

HAN Zixin

吉信 淳

the University of Tokyo

Teppei Nunouraof molybdenum disulfide nanosheets (3)御20 202205-GNBXX-0100

Teppei Nunoura(4)

界二酸化炭素の影響（３）19 202212-GNBXX-0172

enabling lignin conversion into valuable chemicals

Environmental Science Center,the University of Tokyo
Hiroyuki S. Kato

Osaka University

Miyabi Hiyama

Gunma University

吉信 淳

Control for Hetero-Bilayer
樋山 みやび矢口 裕之

樋山 みやび

群馬大学
埼玉大学

群馬大学

原田 昌拓

Absorption spectra of seMpai in aqueous solution

矢野 裕子

Luminescence properties of Er doped III-V

伊藤 駿平

compound semiconductors

勝見 渓太

Study of photodissociation for a new caged

Hiroyuki Yaguchi Saitama Universitymasahiro harada
Yuko Yano

秋山 英文
秋山 英文

Shunpei Ito
Miyabi Hiyama

Gunma University

katsumi keita

秋山 英文

Reo Kometani

The University of Tokyo

Tatsunori Oiwa

秋山 英文

HAN Zixin

三輪 真嗣

TSUBASA TERAMOTO

三輪 真嗣

compound23 202210-GNBXX-0169

プラズモニックデバイスの光学特性の解明

米谷 玲皇

東京大学

大岩 達典

Optical characteristic evaluations of plasmonic
devices
24 202205-GNBXX-0116

二硫化モリブデンナノシートの製造に及ぼす超臨
布浦 鉄兵

東京大学環境安全研究センター カン ジシン

界二酸化炭素の影響（２）25 202206-GNBXX-0125

超伝導体/強磁性体界面で発現する新奇超伝導状態に関する研究Effect of supercritical carbon dioxide on fabrication
Teppei Nunoura Environmental Science Centerof molybdenum disulfide nanosheets (2)
志賀 雅亘

九州大学

寺本 翼

Study of a novel superconductivity emerged at

Masanobu

Environmental Science Center,

superconductor/ferromagnet interface

Shiga

the University of Tokyo

Physical Properties of Spin-Orbit Coupled Magnets
26 202205-GNBXX-0104

超低温トポケミカル合成したスピン軌道結合磁性

原口 祐哉

東京農工大学石北 大悟

体の物性研究27 202205-GNBXX-0091

CeMnSiの高圧下における電気抵抗

Synthesized by Ultralow Temperature

Yuya Haraguchi

Daigo Ishikita

広井 善二

Muroran Institute of Technology Sae Nishiyama

上床 美也

Muroran Institute of Technology Sae Nishiyama

上床 美也

Kento Ishigaki

Tokyo University of Science

上床 美也

Keizo Murata

Osaka Metropolitan University

and Technology

Topochemical Manipulation
川村 幸裕

室蘭工業大学西山 紗恵

Electrical Resistivity of CeMnSi under high pressure

Tokyo University of Agriculture

Yukihiro
Kawamura
28 202205-GNBXX-0092

29 202205-GNBXX-0121

CeMnSiの高圧下における単結晶X線構造解析

単結晶Eu3Bi2S4F4における圧力効果の研究

川村 幸裕

石垣 賢卯

室蘭工業大学西山 紗恵

X-ray structural analysis of CeMnSi single crystal

Yukihirounder high pressure

Kawamura

Research of single crystal Eu3Bi2S4F4 in high東京理科大学pressure
30 202205-GNBXX-0122

圧力媒体の混合効果

村田 惠三

大阪公立大学上床 美也（東京大学物性

Mixing Effect of Pressure Medium

研究所）

Yoshiya Uwatoko (ISSP

上床 美也

The University of Tokyo)
Okinawa Christian Institute

31 202205-GNBXX-0149

多型化合物RIr2Si2(R=希土類)の磁気特性7

内間 清晴

学校法人沖縄キリスト教学院・

繁岡 透（山口大学）

沖縄キリスト教短期大学

Magnetic characteristics of polymorphic

Kiyoharu

compounds RIr2Si2(R=Rare earth) 7

UchimaOkinawa christian juniorCollege

Toru Shigeoka

上床 美也(Yamaguchi University)

Kiyoharu Uchima
内間 清晴（学校法人沖縄32 202205-GNBXX-0150

CeNiC2の結晶育成と物質評価 2

繁岡 透

山口大学

キリスト教学院・沖縄キ Crystal growth and characterization of CeNiC2 2Toru Shigeoka

Yamaguchi University(Okinawa Christian

上床 美也

Institute Okinawa

リスト教短期大学）

christian junior College)
Kiyoharu Uchima
内間 清晴（学校法人沖縄
擬三元化合物 Ce1-ｘLaｘNiC2の結晶育成と物質評
33 202205-GNBXX-0151

Crystal growth and characterization of pseudo繁岡 透

山口大学

価4

キリスト教学院・沖縄キ
リスト教短期大学）(Okinawa ChristianToru Shigeoka

Yamaguchi University

ternary compounds Ce1-ｘLaｘNiC2 4

上床 美也
Institute Okinawa
christian junior College)

34 202206-GNBXX-0119

新ガスケット方式による対向アンビル型高圧装置
久田 旭彦

徳島大学

髙木 拓海

の開発Ⅲ
35 202206-GNBXX-0126

36 202206-GNBXX-0130

37 202206-GNBXX-0132(Ce1-xRx)PtGe2の単結晶育成と磁気的性質

ホイスラー化合物Fe3-xMnxSiの圧力下磁気相転移

Ni2In型強磁性体の自発磁化の圧力効果

Development of opposed-type anvil apparatus
Akihiko Hisada

Tokushima University

Single crystals growth of (Ce1-xRx)PtGe2 and thierTomohito

Faculty of Engineering, Niigata

magnetic properties

NAKANO

University

Takumi Takagi

上床 美也

Hayato Muto

上床 美也

with new gasket system III
中野 智仁

廣井 政彦

安達 義也

新潟大学

武藤 颯人
赤石 幸起

Magnetic phase transitions under pressure in

高本 翼

Heuser compounds Fe3-xMnxSi

鹿児島大学

Kouki Akaishi
Masahiko HIROI Kagoshima University

Pressure effects on the spontaneous magnetization
山形大学

上床 美也
Tsubasa Takamoto

Yoshiya Adachi

Yamagata University

上床 美也

for Ni2In-type ferromagnets
Basic magnetic properties of MnCoGe-MnFeGe
38 202206-GNBXX-0134

MnCoGe-MnFeGe系の磁気特性評価

小山 佳一

鹿児島大学

尾中 朱莉

Keiichi KOYAMA Kagoshima University

Akari Onaka

上床 美也

Yusuke Hirose

Niigata University

Shun Tsuchida

上床 美也

The University of Tokyo

SUPENG LIU

上床 美也

Yamaguchi University

Rei Gotanda

上床 美也

Yamaguchi University

reo niiya

上床 美也

Yamaguchi University

reo niiya

上床 美也

system39 202206-GNBXX-0135

Ta2NiSe5のTaサイト置換物質の高圧力下電気抵抗
広瀬 雄介

新潟大学

土田 駿

測定

Electrical resistivity measurement under pressure of
Ta site substituted Ta2NiSe5
Study of pressure-induced quantum critical

40 202206-GNBXX-0137

強誘電体および反強誘電体における圧力下量子臨
橋本 顕一郎東京大学

劉 蘇鵬

界現象の研究41 202206-GNBXX-0141

42 202206-GNBXX-0142

43 202206-GNBXX-0143

不定比化合物DyCrxGe2の単結晶育成

不定比化合物HoCrxGe2の単結晶育成

不定比化合物DyCrxGe2単結晶の磁化測定

phenomena in ferroelectric and antiferroelectricmaterials

藤原 哲也

藤原 哲也

藤原 哲也

山口大学

山口大学

山口大学

五反田 礼

新谷 怜和

新谷 怜和

Kenichiro
HashimotoSingle crystal growth of non stoichiometricTetsuyacompounds DyCrxGe2

Fujiwara

Single crystal growth of non stoichiometricTetsuyacompounds HoCrxGe2

Fujiwara

Magnetization measurements of non stoichiometric Tetsuya
DyCrxGe2 single crystals

Fujiwara

44 202206-GNBXX-0146

45 202206-GNBXX-0147

MxM'1-xZnSb (M, M':3d遷移金属)の磁気特性
遷移金属カルコゲナイドTiSe2の圧力下 dHvA

三井 好古

摂待 力生

鹿児島大学

新潟大学

長野 杜春

出井 和樹

効果の研究
46 202206-GNBXX-0148

高スピン分極ホイスラー合金における圧力誘起量

片側末端にプロピレン基を持つ非対称TTF誘導体か

Yoshifuru

transition metal)

MITSUI

dHvA effect in transition metal dichalcogenides

Kagoshima University

Moriharu Nagano

上床 美也

Rikio Settai

Niigata University

Kazuki Idei

上床 美也

Iduru Shigeta

Kagoshima University

Aoshima Hideki

上床 美也

TiSe2 under pressure
重田 出

鹿児島大学

青島 英樹

子臨界現象の探索

47 202206-GNBXX-0152

Magnetic properties of MxM'1-xZnSb (M, M':3d

Search for pressure-induced quantum criticalphenomenon in highly spin polarized Heusler alloys

谷口 弘三

埼玉大学

小林 拓矢

High pressure studies on physical properties of

小梁川 響子organic conductors based on asymmetrical TTF

佐藤 慧一

derivatives with a propylene group at one end

らなる有機伝導体の超高圧下物性研究

Takuya Kobayashi
Hiromi
Saitama University

Kyoko Koyanagawa

上床 美也

Taniguchi
Keiichi Sato
Central Institute of48 202206-GNBXX-0153

反強磁性体Eu-Ru-Ge化合物の高圧下における電子

本多 史憲

状態の研究

九州大学アイソトープ統合安全

Electronic properties of an antiferromagnetic Eu-

管理センター

Ru-Ge compound under high pressures

Fuminori Honda

Radioisotope Science and上床 美也

Safety Management, Kyushu
University
Central Institute of

49 202206-GNBXX-0154

ウラン化合物の磁性の圧力効果

本多 史憲

九州大学アイソトープ統合安全

Effect of Pressure on the magnetism of uranium

管理センター

compounds

Fuminori Honda

Radioisotope Science and上床 美也

Safety Management, Kyushu
University

50 202209-GNBXX-0162

S置換したFeSeの高圧低温下NMR測定

藤原 直樹

京都大学

Yu Zhongyu

NMR studies on S-substituted FeSe at highNaoki Fujiwara

Kyoto University

Zhongyu Yu

上床 美也

Ehime University

Makoto Miyamoto

上床 美也

pressures and &nbsp;low temperatures
Keisuke
51 202210-GNBXX-0166

立方晶Ho3AlCの低温比熱

松本 圭介

愛媛大学

宮本 諒人

Specific heat study of Ho3AlC
Matsumoto52 202210-GNBXX-0167

Gd2CuO4の比熱へのNi/Zn添加効果

松本 圭介

愛媛大学

宮本 諒人
Specific heat study of Ni/Zn doped Gd2CuO4
小椋 隆平

Keisuke
Ehime University
Matsumoto

Makoto Miyamoto
上床 美也
Ryuhei Ogura

Development of the quantum oscillation measuring Hitoshi
53 202301-GNBXX-0174

超高圧下量子振動効果測定装置の開発

菅原 仁

神戸大学

薦田 拓也

Kobe university
system under the ultra high pressure

54 202205-GNBXX-0114

リグニンの有用化合物への変換を可能にする固体
布浦 鉄兵

東京大学環境安全研究センター 堂脇 大志

触媒及び反応条件の検討（３）55 202205-GNBXX-0110

Teppei Nunouraof molybdenum disulfide nanosheets (2)植田 大地（高エネルギー
高エネルギーX線透過ラウエによる中性子非弾性散

Effect of supercritical carbon dioxide on fabrication

小林 理気

琉球大学

乱実験用単結晶のアセンブル

加速器研究機構）玉城 良
仁

Environmental Science Center,

Riki Kobayashi

University of the Ryukyus

車地 崇

東京大学

徳永 祐介

レーザー誘起合金化のパルス時間幅依存性

富田 卓朗

徳島大学

古市 健人

Accelerator Research
益田 隆嗣
Yoshihito
Taka-hisa Arima
Magnetic structure analysis of novel topological

Takashimagnets

Kurumaji

The University of Tokyo

厳 正輝（理化学研究所）
57 202204-GNBXX-0087

山室 修

Organization)Tamashirotransmission Laue有馬 孝尚
新規トポロジカル磁性体の合成と磁気構造の解明

Taishi Dowaki

Daichi Ueta (High Energy

琉球大学

56 202209-GNBXX-0161

上床 美也

the University of Tokyo

Assembly of single crystals for inelastic neutron
scattering experiments using high-energy X-ray

Takuya Komoda

Sugawara

Yusuke Tokunaga

益田 隆嗣

Masaki Gen (RIKEN)
Pulse duration dependence of laser induced metal
Takuro Tomita

Tokushima University

Taketo Furuichi

小林 洋平

alloying
58 202205-GNBXX-0094

金属ナノ構造の超高速発光による研究

末元 徹

電気通信大学

Studies on nanostructured metals by ultrafast
luminescence spectroscopy

Suemoto Tohru

The University of ElectroCommunications

小林 洋平

高田 英行

Takada Hideyuki

奈良崎 愛子Aiko Narazaki

小川 博嗣

Hiroshi Ogawa

寺澤 英知
59 202205-GNBXX-0099

次世代レーザーとレーザー加工の基礎技術研究

吉富 大

産業技術総合研究所

澁谷 達則
佐藤 大輔

60 202205-GNBXX-0107

61 202206-GNBXX-0127

62 202212-GNBXX-0173

紫外光レーザー光源を用いた加工応用研究

熱可塑性高分子におけるレーザー誘起構造変化
超短パルスYbファイバーレーザー光源を用いた生

藤本 靖

山口 誠

長島 優

SmSの高強度中赤外パルス光を用いた光誘起相転

Dai Yoshitomi
laser machining technology

Tatsunori Shibuya

Technology

Daisuke Satoh
Ryunosuke Kuroda

田中 真人

Masahito Tanaka

丸 征那

Sena Maru

千葉工業大学

秋田大学

Research on laser processing application by

Yasushiultraviolet laser light source

Fujimoto

Laser-induced structural changes in thermoplastic

Yamaguchi

polymers

MakotoMolecular vibrational imaging of biological tissues

浜松医科大学Yu Nagashimausing Yb fiber-based ultrashort pulse laser source
渡邊 浩

Eichi Terasawa

Industrial Science and黒田 隆之助体組織の分子振動イメージング
63 202206-GNBXX-0136

Basic research on next generation laser systems andNational Institute of Advanced

大阪大学

移ダイナミクス小林 洋平

Chiba Institute of Technology

小林 洋平

Akita University

小林 洋平

Hamamatsu University School

小林 洋平

of Medicine

High power mid-infrared laser induced phase

Hiroshitransition dynamics on SmS

Watanabe

Osaka University

板谷 治郎

Direct observation of quantum well states induced
64 202205-GNBXX-0124

金属表面に形成された水素結合有機フレームワー
金井 要

東京理科大学馬上 怜奈

クによって誘起される量子井戸状態の直接観測

by the hydrogen-bonded organic frameworks

Kaname Kanai

Tokyo University of Science

杉本 卓史

Takafumi Sugimoto

保科 拓海

Hoshina Takumi

三田 愛也
65 202206-GNBXX-0128

Hex-Au(100)上グラフェンにおけるπバンドスピン
伊藤 孝寛

名古屋大学

構造の研究

66 202206-GNBXX-0138

4d強磁性酸化物SrRuO3薄膜における準粒子状態の

寺澤 知潮（日本原子力研
究開発機構）

小林 正起

東京大学

Takahiro Ito

Nagoya University

Hex-Au(100)Koyama Shotaro

強 博文

Bowen Qiang

武田 崇仁

Elucidation of the spin polarization of the quasi-

Masaki

particle states in 4d ferromagnetic oxide SrRuO3

Kobayashi

The University of Tokyo

物質・材料研究機構

電子分光

竹澤 伸吾（東京理科大学）

Takahito Takeda

近藤 猛

Naoka NAGAMURA

津田 俊輔
矢治 光一郎Tomoo Terasawa (Japan 近藤 猛
Atomic Energy Agency)

永村 直佳
強磁性体基板上のグラフェンのスピン角度分解光近藤 猛

Mita Manaya
Spin structure study of π band of Graphene on

小山 正太郎

スピン分極評価

67 202206-GNBXX-0140

Rena Moue

formed on metal surface

Shunsuke Tsuda
SAREES study of graphene on ferromagnetic
Koichiro Yaji
substrates

National Institute for Materials
Science中村 友謙

Shingo Takezawa (Tokyo 近藤 猛
University of Science)
Tomonori Nakamura
Haruki Morino (The68 202205-GNBXX-0095

カロリメトリによる金属試料の赤外吸収率測定

末元 徹

電気通信大学

森野 春樹（電気通信大

Measurement of infrared absorptivity on metal

学）

samples by calorimetry

Suemoto Tohru

The University of ElectroCommunications

university of Electro-

岡﨑 浩三

Communications)
Investigation of the photo-induced phase
励起子絶縁体Ta2NiSe5及び鉄系超伝導体FeSeにお69 202206-GNBXX-0139

久保田 雄也
ける光誘起相転移の研究

理化学研究所transitions in an excitonic insulator Ta2NiSe5 and an Yuya Kubota
Fe-based superconductor FeSe

RIKEN

岡﨑 浩三

Real-space observation of electronic nematicity in
70 202206-GNBXX-0155

高分解能レーザー励起光電子顕微鏡を用いた鉄系

影山 遥一

東京大学

大西 朝登

超伝導体の電子ネマティック状態の実空間観察Ⅵ

iron-based superconductors by using a high-YoichiThe University of Tokyo

Asato Onishi

岡﨑 浩三

Osaka University

Yitong CHEN

岡﨑 浩三

resolution laser photoemission electron microscope Kageyama
Ⅵ

71 202301-GNBXX-0175

赤外パルスレーザーにより励起したSmSにおける
中村 拓人

大阪大学

陳 奕同

光誘起ダイナミクス

Photo-induced dynamics on SmS excited by

Takutoinfrared-pulse laser

Nakamura

Title

Name

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

課題番号

課題名

氏名

所属

分担者

Organization

Member of reseach

実験室

project
林田 健志

Takeshi Hayashida

荒川 慶人

Keito Arakawa

木村 健太（大阪公立大Kenta Kimura (Osaka学）
1 202205-MCBXG-0056

フェロアキシャル物質の探索

木村 剛

東京大学

三澤 龍介

Metropolitan University)
Exploration of ferroaxial materials

Tsuyoshi Kimura 東京大学

Tomoki Yoshioka

永井 隆之

Takayuki Nagai

諸見里 真人Masato Moromizato

山岸 茂直

Shigetada Yamagishi

影山 遥一
2 202206-MCBXG-0078

新奇トポロジカル超伝導体候補物質の合成と物性
石原 滉大

東京大学

評価

Ryusuke Misawa

吉岡 知輝

物質合成室

Yoichi Kageyama

広瀬 夏彦

Synthesis and characterization of novel topological

六本木 雅生superconductors

Kota Ishihara

東京大学

Natsuhiko Hirose
物質合成室
Masaki Roppongi

小河 弘樹

Koki Ogawa
Crystal growth and physical properties

奇パリティ磁気多極子秩序を持つ物質の単結晶育3 202206-MCBXG-0086

阿部 伸行

日本大学

岩﨑 義己

measurement in odd parity multipole ordering

Nobuyuki Abe

Nihon University

IWASAKI Yoshiki

物質合成室

Taishi Dowaki

化学分析室

YANQIONG JIA

X線測定室

Bowen DANG

X線測定室

成と物性評価materials
リグニンの有用化合物への変換を可能にする固体
4 202205-MCBXG-0060

Study of solid catalysts and reaction conditions
布浦 鉄兵

東京大学環境安全研究センター 堂脇 大志

触媒及び反応条件の検討
5 202205-MCBXG-0059

廃混紡布の炭化による吸着材の生産に関する研究

Environmental Science Center,
Teppei Nunoura

enabling lignin conversion into valuable chemicals
布浦 鉄兵

東京大学環境安全研究センター 賈 琰瓊

Carbonization of waste blended fabric to produce

the University of Tokyo
Teppei Nunoura

carbon-based adsorbent
6 202205-MCBXG-0061

バイオマスの超臨界水ガス化におけるCuO-Ni触媒
布浦 鉄兵

東京大学環境安全研究センター 党 博文の適用可能性に関する検討

Applicability of CuO-Ni catalyst for supercriticalEnvironmental Science Center,the University of Tokyo
Teppei Nunoura

water gasification of biomass

Environmental Science Center,the University of Tokyo

Development of novel organic synthesis process
7 202205-MCBXG-0067

亜臨界水と固体塩基触媒の組み合わせによる新規
王 一琦

東京大学

王 一琦

有機合成プロセスの開発

8 202205-MCBXG-0068

連続式超臨界水熱合成法による銀ナノ粒子の調製

with a combination of subcritical water and solid

Haoran Xu

The University of Tokyo

Yiqi Wang

X線測定室

Makoto Akizuki

The University of Tokyo

LI Yanchen

X線測定室

temperature and high pressure water using a multi- Makoto Akizuki

The University of Tokyo

Yumi Okita

X線測定室

The University of Tokyo

Nobuhiro TOGO

X線測定室

base catalyst
秋月 信

東京大学

李 琰琛

Preparation Of Silver Nanoparticles Via Continuous
Supercritical Hydrothermal Synthesis Method
Highly efficient organic synthesis in high
9 202205-MCBXG-0069

高温高圧水中の有機合成の多段反応装置による高
秋月 信

東京大学

沖田 優美

効率化
stage reactor
10 202205-MCBXG-0070

超臨界メタノールと固体塩基触媒を用いたバイオディーゼル燃料合成

秋月 信

東京大学

東郷 宣弘

Synthesis of biodiesel fuels in supercriticalmethanol using solid base catalysts

Makoto Akizuki

11 202205-MCBXG-0076

二硫化モリブデンナノシートの製造に及ぼす超臨

布浦 鉄兵

東京大学環境安全研究センター カン ジシン

界二酸化炭素の影響（１）Effect of supercritical carbon dioxide on fabrication

Teppei Nunoura

Environmental Science Center,of molybdenum disulfide nanosheets (1)the University of Tokyo

Characterization for alloy nanoparticles

Takehiko Sasaki The University of Tokyo張 凱朝
12 202206-MCBXG-0079

合金ナノ粒子のキャラクタリゼーション

佐々木 岳彦東京大学

フェ ジシュン

HAN Zixin

X線測定室

KAICHAO ZHANG

徐 浩然

HE ZIXUAN

X線測定室

Haoran Xu
Department of Applied

13 202206-MCBXG-0087

六方晶ペロブスカイト型イリジウム酸化物
松平 和之

九州工業大学井上 正弥

Ba4BiIr3O12の単結晶育成

14 202206-MCBXG-0094

Co基ホイスラー合金におけるマルテンサイト変態

Single Crystal Growth of 12L Hexagonal Perovskite
Takashi Kitao
Ir oxide Ba4BiIr3O12

重田 出

鹿児島大学

青島 英樹

材料の探索

Search for materials with the Martensitic

Chemistry, Graduate School of

15 202206-MCBXG-0097

X線測定室

Teppei Nunoura Environmental Science Center

Aoshima Hideki

X線測定室

transformation in Co-based Heusler alloys
木村 真栄

極性と幾何学的フラストレーションを有する磁性

Masaya Inoue

Engineering

有馬 孝尚

東京大学

体の電気磁気効果

Shin-Ei Kimura

徳永 祐介

Magnetoelectric Effect in Polar Magnets with石崎 大悟

Geometrical Frustration

Taka-hisa Arima The University of Tokyo

Yusuke Tokunaga

X線測定室

Daigo Ishizaki

虎頭 大輔

Koto Daisuke

新田 魁洲

Surface modification of metals and synthesis of fine黒田 知暉metal particles by interaction between highly

羽藤 健

controlled condensed phases and high-pressure

小池 健

non-equilibrium plasmas

Kaishu Nitta

高度に制御された凝縮相と高圧非平衡プラズマの16 202204-MCBXG-0100

相互作用による金属等の表面改質および微粒子合

小池 健

東京大学

成の研究
17 202205-MCBXG-0052

金属間化合物の構造解析

齋藤 哲治

千葉工業大学

Study of intermetallic compounds

Teppei Nunoura The University of Tokyo

MOFを鋳型とした機能性ナノマテリアルの創製

北尾 岳史

東京大学

Takeru Koike
Teppei Nunoura Environmental Science Center

Fabrication of functional nanomaterials using

葉 思遠

metal-organic frameworks

Makoto Akizuki

The University of Tokyo

秋月 信
電子不足型三量体転移を示す MTe2(M:V,Nb,Ta)の電子顕微鏡室SANTANU CHAND

Synthesis and growth control of BaTiO3 by
東京大学

徐 思キ

径と欠陥の制御20 202204-MCBXG-0046

Keat Beamsley
SIYUAN YE

チャンド サンタヌ
19 202205-MCBXG-0066

電子顕微鏡室Nobuhiko Hosono

ビームスリー キート

超臨界水熱法によるBaTiO3微粒子合成における粒電子顕微鏡室Takeru Hato

細野 暢彦
18 202205-MCBXG-0055

Kuroda Tomoki

Makoto Akizuki

The University of Tokyo

SIQI XU

電子顕微鏡室Nagoya University

Matsuda Yudai

電磁気測定室Nagoya University

Keita Kojima

電磁気測定室

supercritical hydrothermal method
片山 尚幸

名古屋大学

松田 悠大

構造研究

Structural sturdy on MTe2 (M : V,Nb, Ta) which

Naoyukiexhibit an electron deficient trimer transition

Katayama

Synchrotron X-ray diffraction study on Rhodium
21 202204-MCBXG-0047

高圧下で超伝導-絶縁体転移を示すロジウムスピネ
片山 尚幸

名古屋大学

小島 慶太

ルの放射光X線構造研究

Spinel compounds which exhibit a

Naoyukisuperconductivity to insulator transition under

Katayamapressure
22 202204-MCBXG-0048

Fe(Se,Te)薄膜の高機能化

飯田 和昌

Improvement of the superconducting properties
日本大学

Kazumasa Iida

Nihon University

電磁気測定室Yokohama National University

電磁気測定室for Fe(Se,Te) thin films
Magnetism and thermoelectric properties at high23 202205-MCBXG-0050

Nd1-x(Ba0.25Sr0.25Ca0.50)xFeO3 (0.1≦x≦0.9) の中津川 博

横浜国立大学

temperature in Nd1-x(Ba0.25Sr0.25Ca0.50)xFeO3

高温における磁性と熱電特性に関する研究(0.1≦x≦0.9))

HiroshiNakatsugawa
矢口 宏

24 202205-MCBXG-0054

超伝導体転移温度に対する軸性圧力効果の検証

高橋 龍生

東京理科大学

小暮 琉介
高橋 龍生

25 202205-MCBXG-0062

スピン液体”擬態”物質における磁気秩序の観測の試
原口 祐哉

東京農工大学み26 202205-MCBXG-0063

3d電子系におけるスピン軌道結合磁性の開拓

Hiroshi Yaguchi
Pressure dependence of superconducting transition Ryusei
temperatrue
An attempt to observe magnetic ordering in spin

Takahashi

Yuya Haraguchi
liquid "mimicries"

原口 祐哉

東京農工大学

Exploring spin-orbit coupled magnetism in 3delectron systems

Tokyo University of Science

Ryusuke Kogure

電磁気測定室Ryusei Takahashi
Tokyo University of Agriculture
電磁気測定室and Technology
Yuya Haraguchi

Tokyo University of Agriculture
and Technology

電磁気測定室内藤 聖羅27 202205-MCBXG-0064

二次元酸化物の磁化率測定III

荻野 拓哉

山形大学

加藤 貴大
荻野 拓哉

28 202206-MCBXG-0081

新規ラクナスピネル化合物の磁性

香取 浩子

東京農工大学

原口 祐哉

Seira Naito
Magnetic susceptibility measurement of 2D oxides

Ogino Takuya

III

Magnetism of novel lacunar spinel compounds

ホイスラー化合物での反強磁性の研究

廣井 政彦

鹿児島大学

赤石 幸起

Study on antiferromagnetism in Heusler

高本 翼

compounds

Takahiro Kato

電磁気測定室OGINO TAKUYA
Hiroko Katori

伊東 賢佑
29 202206-MCBXG-0083

Yamagata University

Tokyo University of Agriculture

Yuya Haraguchi

and Technology

Kensuke Ito

Masahiko HIROI Kagoshima University

Kouki Akaishi

電磁気測定室

電磁気測定室Tsubasa Takamoto

Study on analysis of magnetic properties for highly
30 202206-MCBXG-0093

高スピン分極ホイスラー合金の磁気特性のスピン

重田 出

鹿児島大学

青島 英樹

ゆらぎ理論による解析に関する研究

31 202206-MCBXG-0099

ランダムネスがある系における磁場誘起マルチ

spin polarized Heusler alloys by the spin fluctuation Iduru Shigeta

有馬 孝尚

東京大学

渡辺 義人

フェロイック相の開拓

Development of Magnetic-Field-Induced

家庭用浄水のためのグラフェン膜の製造

Takahisa Arima

布浦 鉄兵

東京大学環境安全研究センター ラスロフ ディニス

超臨界流体を用いたスクラップタイヤの脱硫化に

布浦 鉄兵

東京大学環境安全研究センター 楊 丹

Yoshito Watanabe

電磁気測定室Dinis Rasulov

光学測定室

DAN YANG

光学測定室

the University of Tokyo

Devulcanization of scrap tire using supercritical fluid Teppei Nunoura

Environmental Science Center,the University of Tokyo

淡路 功太
34 202205-MCBXG-0073

The University of Tokyo
Environmental Science Center,

関する検討

重希土類および第13族元素を充填した新規スクッ電磁気測定室Teppei Nunoura
water purification

33 202206-MCBXG-0082

Aoshima Hideki

Multiferroic Phase in Random Spin Systems
Production of graphene membrane for household

32 202205-MCBXG-0058

The University of Tokyo

theory関根 ちひろ室蘭工業大学

テルダイト型熱電材料の高圧合成

新井 聖也
寺坂 聡志

Awaji Kouta

High-pressure synthesis of new skutterudite-type
thermolectric materials filled with heavy rare earth

Chihiro Sekine

Muroran Institute of Technology

ケイ素を含んだ鉄の水素化挙動の探索

森 悠一郎

東京大学

鍵 裕之

丹羽 健

名古屋大学

有賀 甚

高圧合成室

Satoshi Terasaka
and group 13 element

長瀬 竜也
35 202206-MCBXG-0088

SEIYA ARAI

Tatsuya Nagase
Investigation into Si effect on iron hydrogenation

Mori Yuichiro

The University of Tokyo

Hiroyuki Kagi

高圧合成室

Ken Niwa

Nagoya University

Aruga Jin

高圧合成室

Takuya Sasaki

Nagoya University

Ryo Kanzaki

高圧合成室

Yoshinori Imai

Tohoku university

Fuki Sato

Ultra-high-pressure and high-temperature
新規3d遷移金属ケイ化物の超高温高圧合成と結晶
36 202206-MCBXG-0090
化学

37 202206-MCBXG-0092

高圧下における多成分遷移金属窒化物の合成

synthesis and crystal chemistry of novel 3dtransition metal silicides&nbsp;

佐々木 拓也

名古屋大学

神崎 亮

High-pressure synthesis and characterization ofmulticomponent transition-metal nitrides
High pressure synthesis of Ru(Br1-xIx)3 with the
38 202205-MCBXG-0072

ハニカム格子を持つRu(Br1-xIx)3の高圧合成

今井 良宗

東北大学

佐藤 楓貴

X線測定室、高honeycomb structure

圧合成室

車地 崇
39 202206-MCBXG-0098

ハニカム型反強磁性体における特異な熱伝導現象
上野 正人

東京大学

の起源の研究池田 凜太郎
上野 正人

Takashi Kurumaji
Research on the origin of unique thermal transport
Masato Ueno

The University of Tokyo

in honeycomb antiferromagnets
Masato Ueno

今村 薫平
40 202206-MCBXG-0084

新奇量子スピン液体候補物質の合成と物性評価

橋本 顕一郎

東京大学

rintaro ikeda

Kumpei Imamura

ファン センジェ

Synthesis and characterization of novel quantum

Kenichiro

劉 蘇鵬

spin liquid materials

Hashimoto

The University of Tokyo

Shengjie Fang
SUPENG LIU

吉田 悠生

X線測定室、電磁気測定室

物質合成室、X
線測定室、電磁気測定室
Yusei Yoshida

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

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
実験室
project
1 202209-MCBXU-0103

超伝導体 NbNx における結晶構造の温度依存性の
武田 崇仁

東京大学

観測
2 202211-MCBXU-0106

強相関トポロジカル物質の物性評価

水上 雄太

東北大学

大野 綾太郎Observation of the temperature dependence of

Takahito

the crystal structure of superconductor NbNx

TakedaCharacterization of strongly correlated topologicalmaterials

Yuta Mizukami

The University of Tokyo

Tohoku University

X線測定室

Ryotaro Ono

X線測定室

王 陽明
3 202209-MCBXU-0104

巨大異常ネルンスト効果を示す新規トポロジカル

梶原 悠人

東京大学

磁性体開発

Yangming Wang

Feng Zili

Search for new topological magnets exhibiting the

黒沢 駿一郎giant anomalous Nernst effectyuto kajiwara

The University of Tokyo

Yuki Koike

有馬 孝尚
4 202209-MCBXU-0102

新規トポロジカル磁性体の合成と物性開拓

車地 崇

東京大学

電子顕微鏡室Shunichiro Kurosawa

小池 祐樹

徳永 祐介

Zili Feng

Taka-hisa Arima
Materials development for novel topological

厳 正輝（理化学研究所） magnets

Takashi
The University of Tokyo
Kurumaji

Yusuke Tokunaga
電磁気測定室Masaki Gen (RIKEN)

上野 正人

Masato Ueno
物質合成室、電5 202210-MCBXU-0105

5d電子系における多極子物性の研究

平井 大悟郎名古屋大学

Multipolar physics in 5d electron systems

Daigorou Hirai

Nagoya University

磁気測定室、高圧合成室

国際超強磁場科学施設 / International MegaGauss Science Laboratory
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach

担当所員

project
大窪 悠太
1 202205-HMBXX-0048

希土類金属間化合物の強磁場物性研究海老原 孝雄静岡大学

エスティアク アフメド

Yuta Okubo
Physical Properties at high magnetic fields in rare

Takao Ebihara

Shizuoka University

Esteaque Ahmed

金道 浩一

earth intermetallic compounds
小林 和

Kazu Kobayashi
Search for novel spin-orbit-entangled-magnetic-

四面体配位された3d電子系化合物における新規ス
2 202205-HMBXX-0052

Tokyo University of Agriculture
原口 祐哉

東京農工大学石北 大悟

ピン軌道結合磁場誘起相の探索

3 202205-HMBXX-0058

幾何学的フラストレート磁性体の強磁場磁化測定

field-induced phases in transition metal materials

Yuya Haraguchi

菊池 彦光

福井大学

Daigo Ishikita

金道 浩一

and Technology
with tetrahedrally coordinated 3d-electrons
Magnetization measurements of the frustrated

Hikomitsu

magnets

Kikuchi

University of Fukui

金道 浩一

High-field superconductivity in organic
乱れを導入した有機超伝導体における強磁場超伝
4 202206-HMBXX-0066

Institute for Materials Research,杉浦 栞理

東北大学 金属材料研究所

superconductors with artificially introduced

Shiori Sugiura

導状態

金道 浩一
Tohoku University

disorders
量子スピン液体候補物質κ-[(BEDT-TTF)1-x(BEDT5 202206-HMBXX-0068

STF)x]2Cu2(CN)3の示す特異なMott転移に対するMagnetic field effects on the Mott transition in a
福岡 脩平

北海道大学

quantum spin liquid candidate κ-[(BEDT-TTF)1-

磁場効果

Shuhei Fukuoka Hokkaido University

金道 浩一

x(BEDT-STF)x]2Cu2(CN)3
Recovery processes of the magnetic anisotropy in a

6 202206-HMBXX-0080

パルス強磁場磁化測定から観測するYb希薄系
北澤 崇文

東北大学

池田 陽一

(Lu,Yb)Rh2Zn20の磁気異方性の回復過程

7 202205-HMBXX-0053

Magnetism and anisotropy of uranium

diluted Yb system (Lu,Yb)Rh2Zn20 revealed bypulsed high field magnetization measurements

Opletal Petr

日本原子力研究開発機構

芳賀 芳範

chalcogenides UOX (X = S, Se, Te) and U7Te12

Magnetism and anisotropy of uranium

Kitazawa
Tohoku university

Yoichi Ikeda

金道 浩一

Petr Opletal

Japan Atomic Energy Agency

Yoshinori Haga

徳永 将史

Yoshiki Sato

Tokyo University of Science

Takafumi

chalcogenides UOX (X = S, Se, Te) and U7Te12
岡崎 竜二

8 202205-HMBXX-0054

キラル構造をもつ磁性体NdPt2Bの磁気相図

佐藤 芳樹

東京理科大学

柴岡 歩

Ryuji Okazaki
Magnetic phase diagram of NdPt2B with a chiral
Ayumu Shibaoka

徳永 将史

structure
江口 恭平

9 202205-HMBXX-0061

鉄系超伝導体の磁気光学イメージングによる超伝
矢口 宏

東京理科大学

Kyohei Eguchi

小暮 琉介

Observations of superconducting states in iron-高橋 龍生

based superconductors using an MO imaging

栗原 綾佑

technique

矢口 宏

Ultrasonic study of quantum states in strongly-

小峰 智弥

correlated electron systems under pulsed-magnetic

島根 恭汰

fieldsRyusuke Kogure
Hiroshi Yaguchi

Tokyo University of Science

Ryusei Takahashi

徳永 将史

導状態の観測パルス強磁場下超音波計測による強相関電子系の10 202206-HMBXX-0063

Hiroshi Yaguchi
Ryosuke栗原 綾佑
磁場中量子状態

Ryosuke Kurihara

東京理科大学Tokyo University of Science
Kurihara

Tomoya Komine
Kyota Shimane

徳永 将史

11 202206-HMBXX-0067

新規ラクナスピネル化合物の強磁場下での物性

香取 浩子

東京農工大学

原口 祐哉

Physical properties of novel lacunar spinel

伊東 賢佑

compounds under high magnetic fields

Hiroko Katori

Tokyo University of Agriculture

Yuya Haraguchi

and Technology

Kensuke Ito

近藤 雅起
構造相転移近傍の極性ディラック電子系物質の量12 202206-HMBXX-0079

金属超伝導体の結晶育成と強磁場物性研究

大阪大学

湯浅 直輝
宮本 雄哉

エスティアク ア
静岡大学

小林 和

フメド
14 202209-HMBXX-0088

極性磁性ワイル半金属候補物質のフェルミオロ

Masaki Kondo
Quantum transport for polar Dirac metals near a

酒井 英明
子伝導現象

13 202205-HMBXX-0047

徳永 将史

車地 崇

東京大学

有馬 孝尚

ジー

Hideaki Sakai

Osaka University

structural transition

Naoki Yuasa

徳永 将史

Yuya Miyamoto
Crystal growth and physical Properties at highEsteaquemagnetic fields in metallic super conductors

Ahmed

Fermiology of polar magnetic Weyl semimetal

Takashicandidate

Kurumaji

Shizuoka University

Kazu Kobayashi

小濱 芳允

The University of Tokyo

Taka-hisa Arima

金道 浩一

Saitama University

Harasawa Hideaki

徳永 将史

Magnetic properties of hexagonal QS-type iron15 202209-HMBXX-0089

六方晶QS型鉄酸化物 Ba2MeSn2Fe10O22 の強磁場

神島 謙二

埼玉大学

原澤 秀明

磁気特性

oxide Ba2MeSn2Fe10O22 under high magnetic
fieldsKenji
Kamishima

Kazuo Yano (University of
矢野 一雄（筑波大学）
16 202301-HMBXX-0097

希土類化合物RERu2Si2の強磁場磁化過程

原 嘉昭

国立高等専門学校機構
業高等専門学校

茨城工 喜多 英治（筑波大学）
雨海 有佑（室蘭工業大

Tsukuba)High field magnetization process in rare-earth

Yoshiaki Hara

compound RERu2Si2

National Institute of Technology Eiji Kita (University of(KOSEN), Ibaraki College

学）

徳永 将史

Tsukuba)Yusuke Amakai(Muroran Institute ofTechnology)

東中 隆二
17 202302-HMBXX-0098

2重Dirac点を持つ層状トポロジカル物質の線形磁
青木 勇二

東京都立大学大学院

気抵抗

Ahmad Nazir
Afzal Md Asif

Ryuji Higashinaka
Linear magnetoresistance in layered topological
Yuji Aoki

Tokyo Metropolitan University

materials with double Dirac points

Nazir Ahmad

徳永 将史

Md Asif Afzal

大阪大学大学院理学研究科附属先端強磁場科学研究センター / Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
1 202204-HMOXX-0045

電気磁気反強磁性Cr2O3薄膜の界面磁化検出

白土 優

Detection of interfacial magnetic moment in
大阪大学

Yu Shiratsuchi

萩原 政幸（大阪
Osaka University

magnetoelectric Cr2O3
2 202205-HMOXX-0049

CdI2型構造を持つ超伝導体の物質開発

工藤 一貴

Development of novel superconductors with a
大阪大学

大学）
Kazutaka Kudo

萩原 政幸（大阪
Osaka University

CdI2-type structure
3 202205-HMOXX-0050

ハニカムネットワークを持つ超伝導物質の開発

工藤 一貴

Development of novel superconductors with
大阪大学

大学）
Kazutaka Kudo

萩原 政幸（大阪
Osaka University

honeycomb networks
空間反転対称性の破れや磁気フラストレーション
4 202205-HMOXX-0051に誘発された特異な磁性を持つ希土類化合物の強

竹内 徹也

大阪大学

種々の新型磁気力ブースターの性能試験

大貫 惇睦（東京都立大学）
磁場物性
5 202205-HMOXX-0055

大学）

Characteristic magnetic properties and high-field牧祥

岡山理科大学

magnetism in rare-earth compounds without space
inversion symmetry
Performance test of various types of new magnetic

Tetsuya
Osaka University
TakeuchiSyou Maki

Okayama University of Science

force boosters
6 202205-HMOXX-0056

カゴメ反強磁性体の強磁場磁化測定

吉田 紘行

北海道大学

萩原 政幸（大阪

Metropolitan University)

大学）
萩原 政幸（大阪大学）

High-field magnetization measurements of kagome Hiroyuki Kura
antiferromagnets

Yoshichika Onuki (Tokyo

Hokkaido University
Yoshida萩原 政幸（大阪大学）

Development of the ESR probe for light7 202205-HMOXX-0057

偏光依存・強磁場ESR測定の開発とSr2CoSi2O7の
赤木 暢

東北大学

エレクトロマグノン研究

8 202205-HMOXX-0060

強磁性ホイスラー合金Ni2MnGa系合金の磁気的機能性の研究

polarization dependence measurement and study

Mitsuru Akaki

Tohoku University
大学）

of the electromagnon in Sr2CoSi2O7
左近 拓男

龍谷大学

Research on magnetic functionalities of Ni2MnGa
Heusler alloys

萩原 政幸（大阪

Takuo Sakon

Ryukoku University

萩原 政幸（大阪大学）

High-field multi-frequency ESR in the one9 202205-HMOXX-0064

一次元反強磁性体CuX2•(γ-pic)2(X=Cl,Br)の高磁場

浅野 貴行

福井大学

dimensional antiferromagnets, CuX2•(γ-

多周波ESR

10 202205-HMOXX-0077

パルス強磁場を用いた高圧下ESR装置用圧力セルの強いスピン-軌道相互作用を活かした酸化物スピン

櫻井 敬博

神戸大学

研究分野

層状磁性半導体の巨大磁気抵抗効果の研究

松野 丈夫

大阪大学

塩貝 純一

13 202206-HMOXX-0076

Oxide spintronics utilizing strong spin-orbit coupling Jobu Matsuno

村川 寛

Research for the giant magnetoresistance in layered Hiroshi
大阪大学

宮坂 茂樹

大阪大学

de Haas-van Alphen effect in Dirac material NiTe2

ン効果
14 202206-HMOXX-0078

ThCr2Si2型Eu化合物の多彩な磁気秩序の解明

萩原 政幸（大阪
Kobe University
大学）
Osaka University

上田 浩平

magnetic semiconductors
ディラック電子系NiTe2のドハースファンアルフェ

Takahiro
Sakurai

トロニクス
12 202206-HMOXX-0075

大学）pic)2(X=Cl,Br)

最適化
11 202206-HMOXX-0071

萩原 政幸（大阪

Takayuki Asano University of Fukui

Junichi Shiogai

萩原 政幸（大阪

Kohei Ueda

大学）
萩原 政幸（大阪

Osaka University
Murakawa
Shigeki大学）
萩原 政幸（大阪

Osaka University

Miyasaka
酒井 英明

Study of complex antiferromagnetic orders in

大阪大学

Hideaki Sakai

大学）
萩原 政幸（大阪

Osaka University

ThCr2Si2-type Eu-based compounds

大学）

Transport measurements on micro-structured
15 202206-HMOXX-0082

非従来型超伝導体微細構造のパルス強磁場下輸送

掛谷 一弘

京都大学

unconventional superconductors under pulsed high Itsuhiro Kakeya特性

16 202209-HMOXX-0087

均一粒径クロミック材料の強磁場物性萩原 政幸（大阪

Kyoto University

大学）

magnetic fields
浅野 貴行

Magnetic properties of chromic materials with福井大学

萩原 政幸（大阪

Takayuki Asano University of Fukui

uniform particle size under high magnetic field
FCCフラストレート磁性体RInCu4のパルス強磁場
17 202210-HMOXX-0092

和氣 剛

京都大学

パルス強磁場用極低温実験装置の開発

萩原 政幸（大阪
Takeshi Waki

下ホール抵抗測定
18 202211-HMOXX-0095

大学）

Pulse High-field Hall resistivity of FCC frustrated
Kyoto University

magnets RInCu4
野口 悟

大阪公立大学吉田 勝一

Development of the cryostat for pulsed high大学）
Satoru Noguchi Osaka Metropolitan University

Shoichi Yoshidamagnetic field

萩原 政幸（大阪大学）

強磁場コラボラトリー / The High Magnetic Field Collaboratory
No.

課題番号

課題名

氏名

所属

分担者

Title

Name

Organization

Member of reseach
担当所員
project
有機ラジカルからなるフラストレート磁性体の強1 202205-HMBXX-0069

山口 博則
磁場物性

2 202210-HMBXX-0090

光駆動型有機FET界面におけるフェルミオロジーと
木俣 基
強磁場NMR測定によるカゴメ遍歴磁性体におけるHironorimaterials composed of organic radicals

Yamaguchi

Fermiology and high-field superconducting phase in東北大学

強磁場超電導相
3 202206-HMCXX-0070

High-field magnetic properties of frustrated
大阪公立大学

Osaka Metropolitan University

金道 浩一

Motoi Kimata

Tohoku University

徳永 将史

Yoshihiko Ihara

Hokkaido University

小濱 芳允

Name

Organization

photo-induced organic FET interface
井原 慶彦

High-field NMR study for field-induced magnetic
北海道大学大学院

磁場誘起磁気相の研究

states in itinerant kagome magnets

留学研究課題 / External Research Project Long / Short -term
No.

課題番号

課題名

氏名

所属

分担者

Title

Member of reseach
担当所員
project
1 202111-VSBXL-0003

超短パルスレーザー照射により誘起される微細構
造変化の評価

高林 圭佑

秋田大学

Evaluation of structural changes induced by

Keisukeultrashort pulsed laser

Takabayashi

Akita University

小林 洋平

2022年度 中性子科学研究施設

No.

共同利用課題一覧 / Joint Research List of Neutron Scattering Research Project 2022

課題名

氏名

所属

分担者（共同研究者）

Title※実施課題一覧、所属は申請時のデータ

Name

Organization

Member of research project

装置

ビーム
ポート
那波 和宏, Wu Hung-Cheng, 村崎 遼, Pharit
1 GPTAS（汎用3軸中性子分光器）IRT課題

佐藤 卓

東北大学

Kazuhiro Nawa, Wu Hung-Cheng, Ryo Murasaki, Pharit

Piyawongwatthana, 横山 淳, 田畑 吉計, 下 IRT project of GPTAS

Taku J Sato

Tohoku University

館 凌人

中島 多朗

東京大学

地 崇, 有馬 孝尚, 高阪 勇輔, 姜 佳良, 厳 正

GPTAS

4G

PONTA

5G

TOPAN

6G

HER

C1-1

SANS-U

C1-2

iNSE

C2-3-1AGNES

C3-1-1MINE

C3-1-2

Tabata, Ryoto Shimodate
Hiraku Saito, Seno Aji, Takuro Kawasaki, Naoki Kobayashi,

齋藤 開, Seno Aji, 川崎 卓郎, 小林 尚暉, 車
2 PONTA（高性能偏極中性子散乱装置）IRT課題

Piyawongwatthana, Makoto Yokoyama, Yoshikazu

IRT project of PONTA

Taro Nakajima

The University of Tokyo

Takashi Kurumaji, Takahisa Arima, Yusuke Kosaka, Karyou
Kyo, Masaki Gen, Yusuke Tokunaga, Daigo Ishizaki, Kamini輝, 徳永 祐介, 石崎 大悟, Kamini Gautum
Gautum
藤田 全基, 北澤 崇文, 池内 和彦, 那波 和宏,

Masaki Fujita, Takahumi Kitazawa, Kazuhiko Ikeuchi,

中島 多朗, 清水 悠晴, 高田 秀佐, 猪野 隆,

Kazuhiro Nawa, Taro Nakajima, Yusei Shimizu, Shusuke

Xie Peiao, Pang Xiaoqi, Wang Tong, 唐 一
3TOPAN（東北大理：３軸型偏極中性子分光器

池田 陽一

東北大学

）IRT課題Takada, Takashi Ino, Xie Peiao, Pang Xiaoqi, Wang Tong,

飛, Chen Yizhou, 大里 耕太郎, 北山 慎之介, IRT project of TOPAN

Yoichi Ikeda

Tohoku University

Kitayama, Kaede Isomura, Saiki Futami, Yuta Ohki, Zheng

岡部 博孝, 高田 秀佐, 足立 匡, 小宮山 陽太,Jiajie, Hirotaka Okabe, Shusuke Takada, Tadashi Adachi,

岡田 陸玖

Yota Komiyama, Riku Okada

佐藤 卓, 中島 多朗, 横山 淳, 阿曽 尚文, 浅井
4 HERにおける量子物質の準粒子構造の研究

益田 隆嗣

東京大学

晋一郎, 齋藤 開, 寺田 典樹, 三宅 岳志, Liu

Taku J Sato, Tato Nakajima, Makoto Yokoyama, Naofumi
IRT project of HER

眞弓 皓一

東京大学

Takatsugu
The University of Tokyo
MasudaZheyuan, Wei Zijun

5 SANS-U(二次元位置測定小角散乱装置)IRT課題

小田 達郎

小田 達郎, 井上 倫太郎, 守島 健, 土肥 侑也,

Tatsuro Oda, Rintaro Inoue, Ken Morishima, Yuya Doi,

平田 芳信, Jakkrit Prateepkaew, 山田 悟史,

Yoshinobu Hirata, Jakkrit Prateepkaew, Norifumi Yamada,奥田 綾, 辻 優依, 中村 絵里佳, 櫻木 美菜,

IRT project of SANS-U

Koichi Mayumi

The University of Tokyo

Lester Geonzon, Takato Enoki, Kei Hashimoto, Koichiro

浩一朗, 安部 美季, 木田 拓充, 高橋 倫太郎,

Sadakane, Miki Abe, Takumitsu Kida, Rintaro Takahashi,

犬飼 海洋, 山本 勝宏

Mihiro Inukai, Katsuhiro Yamamoto

東京大学

Koichi Mayumi, Hitoshi Endo, Rintaro Inoue, Norifumi
IRT project of iNSE

Tatsuro Oda

The University of Tokyo
Yamada, Setsuo Sato

秋葉 宙, 大政 義典, 佐藤 創, Menghan
AGNES（高分解能パルス冷中性子分光器）IRT
山室 修

東京大学

課題

Zhang, 佐藤 駿, Xuejun Wu, 中津 大貴, 辻Hiroshi Akiba, Yoshinori Ohmasa, Hajime Sato, Menghan
IRT project of AGNES

孝史, 田路 智也, 尾原 幸治, 池田 一貴

Osamu
The University of Tokyo
Yamamuro

Tatsuro Oda, Masaaki Kitaguchi , Seiji Tasaki, Riichiro朗, 奥野 泰希, 中野 貴之, 橋本 優作, 櫻井 辰
MINE（京大複合研：多層膜中性子干渉計・反射Nakamura, Yasuki Okuno, Takayuki Nakano, Yusaku
大, 清水 裕彦, 奥平 琢也, 藤家 拓大, 奥野 泰 MINE (Multilayer neutron interferometer and日野 正裕率計）IRT課題

Zhang, Shun Sato, Xuejun Wu, Hiroki Nakatsu, Takashi
Tsuji, Tomoya Taji, Koji Ohara, Kazutaka Ikeda

小田 達郎, 北口 雅暁, 田崎 誠司, 中村 吏一

8

Aya Okuda, Yui Tsuji, Erika Nakamura, Mina Sakuragi,

Lester Geonzon, 榎木 崇人, 橋本 慧, 貞包

佐藤 節夫

7

Aso, Shinichiro Asai, Hiraku Saito, Noriki Terada, Takeshi
Miyake, Liu Zheyuan, Wei Zijun

眞弓 皓一, 遠藤 仁, 井上 倫太郎, 山田 悟史,
6 iNSE（中性子スピンエコー分光器)IRT課題

Ichito Tan, Chen Yizhou, Kotaro Osato, Shinnosuke

磯村 楓, 二見 采樹, 大亀 佑太, Zheng Jiajie,

京都大学

Masahiro Hino
希, 中野 貴之, 橋本 優作, 櫻井 辰大, 山田 悟 reflectmeter)史, 佐藤 節夫, 大下 英敏, 神谷 好郎, 西村 龍
太郎

Kyoto University

Hashimoto, Tatsuhiro Sakurai, Masahiro Shimizu, Takuya
Okudaira, Takuhiro Fujiie, Norifumi Yamada, Setsuo Sato,
Hidetoshi Ohshita, Yoshio Kamiya, Ryutaro Nishimura

Kazuaki Iwasa, Keitaro Kuwahara, Makoto Yokoyama,
岩佐 和晃, 桑原 慶太郎, 横山 淳, 伊賀 文俊,
Fumitoshi Iga, Takehito Nakano, Tato Nakajima, Ami
中野 岳仁, 中島 多朗, 下田 愛海, 熊田 隆伸,
Shimoda, Takanobu Kumada, Hiromasa Imazeki, Wataru
今関 啓雅, 黒澤 航海, 鈴木 陽太郎, 井能 楓,
9 HQR(高分解能中性子散乱装置)IRT課題

大山 研司

茨城大学

上條 力, 内馬場 優太, 小林 龍珠, 大谷 良美,

Kurosawa, Yotaro Suzuki, Keade Ino, Riki Kamijo, Yuta
IRT project of HQR

Kenji Ohoyama

Ibaraki University

紺谷 駿, 原島 周平, 高野 元輝, 菅野 友哉,

IRT課題

藤田 全基, 南部 雄亮, 池田 陽一, 猪野 隆, 奥Masaki Fujita, Yusuke Nambu, Yoichi Ikeda, Takashi Ino,

隆之, 上床 美也, 山根 悠, 森 賢太郎, 渡邊 功

Takayuki Oku, Yoshiya Uwatoko, Yu Yamane, Kentaro

雄, Utami Widyaiswari, Anita Eka Putri,Mori, Isao Watanabe, Utami Widyaiswari, Anita Eka Putri,
Muhammad Abdan Syakuur, Kaede Isomura, Saiki Futami,

采樹, 大亀 佑太, Zheng Jiajie, 岡部 博孝, 高 IRT project of AKANE

Takanori
Tohoku University
Taniguchi
田 秀佐, 川本 陽, 梅本 好日古, Xie Peiao,

Yuta Ohki, Zheng Jiajie, Hirotaka Okabe, Shusuke Takada,
You Kawamoto, Yoshihiko Umemoto, Xie Peiao, Pang

Pang Xiaoqi, Wang Tong, 北澤 崇文, 唐 一

Xiaoqi, Wang Tong, Tamafumi Kitazawa, Ichito Tan,飛, 川又 雅広, Chen Yizhou, 大里 耕太郎, 北Masahiro Kawamata, Chen Yizhou, Kotaro Osato,

山 慎之介

Shinnosuke Kitayama
Masaki Fujita, Yoichi Ikeda, Takanori Taniguchi, Kenji

藤田 全基, 池田 陽一, 谷口 貴紀, 大山 研司,
Ohoyama, Masatomo Yashima,Kotaro Fujii, Daichi Kato,
八島 正知, 藤井 孝太郎, 加藤 大地, 津森 竜
Tatsuya Tsumori, Yosuke Matsuzaki, Tong Zhu, Takahiro也, 松崎 洋介, Tong Zhu, 田中 貴大, 原田 雅
Tanaka, Masafumi Harada, Ayumi Saito, Takahiro Inoue,史, 斎藤 あゆみ, 井上 貴裕, 京谷 智裕, 奈木
Tomohiro Kyotani, Yuki Nagino, Song Subin, Shunsuke
野 勇生, Song Subin, 瀧ケ平 隼輔, 岡部 博
HERMES（東北大金研：中性子粉末回折装置）
11

T1-2

Ryosuke Koizumi, Hideaki Ebisawa, Teppei Takahashi

Muhammad Abdan Syakuur, 磯村 楓, 二見
東北大学

AKANE

Shuta Kawakami, Masatoshi Hiraishi, Azumi Yashiro,
海老澤 秀明, 高橋 哲平

谷口 貴紀

T1-1

Hoshi, Yodai Kobayashi, Yuka Tomimatsu, Koki Aizawa,
川上 修汰, 平石 雅俊, 矢代 安澄, 小泉 遼介,

AKANE（東北大金研：三軸型中性子分光器 ）HQR

Syuhei Harashima, Motoki Takano, Tomoya Kanno, Shota
星 翔太, 小林 洋大, 富松 優花, 會澤 幸希,

10

Uchibaba, Ryuju Kobayashi, Yoshimi Otani, Shun Kontani,

Takigahira, Hirotaka Okabe, Shusuke Takada, Chul-Ho
南部 雄亮

東北大学

IRT課題

孝, 髙田 秀佐, 李 哲虎, 坂上 良介, Maxim

IRT project of HERMES

Yusuke Nambu

Tohoku University

HERMES T1-3
Lee, Ryosuke Sakagami, Maxim Avdeev, Kaede Isomura,Avdeev, 磯村 楓, 二見 采樹, 大亀 佑太,
Saiki Futami, Yuta Ohki, Zheng Jiajie, You Kawamoto,

Zheng Jiajie, 川本 陽, 梅本 好日古, Xie

Yoshihiko Umemoto, Xie Peiao, Pang Xiaoqi, Wang Tong,
Peiao, Pang Xiaoqi, Wang Tong, 北澤 崇文,
Tamafumi Kitazawa, Ichito Tan, Masahiro Kawamata,唐 一飛, 川又 雅広, Chen Yizhou, 大里 耕太
Chen Yizhou, Kotaro Osato, Shinnosuke Kitayama, Keigo郎, 北山 慎之介, 小野 圭吾

Ono
Terutoshi Sakakura, Hajime Yamamoto, Sachiko
坂倉 輝俊, 山本 孟, 上山 幸子, 高橋 慎吾, 満
12 FONDER(中性子4軸回折装置)IRT課題

木村 宏之

東北大学

田 節生, 内原 猛, 小関 真, 藤原 理賀, 川口

IRT proposal for FONDER (Neutron 4-circle
Hiroyuki Kimura

Tohoku University

diffractometer)

Kamiyama, Shingo Takahashi, Setsuo Mitsuda, Takeru
FONDER T2-2
Uchihara, Makoto Ozeki, Masayoshi Fujiwara, Taichi

泰知, 南部 雄亮, 川又 雅広
Kawaguchi, Yusuke Nambu, Masahiro Kawamata
13 液体プロピレンカーボネートの部分構造因子

亀田 恭男

山形大学

強口 岬, 天羽 優子, 臼杵 毅

Partial Structure Factors of Liquid Propylene
Yasuo Kameda

Yamagata University

Taku J Sato

Tohoku University

Misaki Kowaguchi, Yuko Amo, Takeshi Usuki

GPTAS

4G

GPTAS

4G

GPTAS

4G

Carbonate14

a-Cu2V2O7 における磁気モーメント方向の温度
佐藤 卓

東北大学

依存性
15

新しい量子三角格子磁性体Ba3Yb(BO3)3の短距
離磁気相関

佐藤 卓

東北大学

Pharit Piyawongwatthana, 那波 和宏, 奥山 Temperature dependence of the moment canting
大輔, Wu Hung-Cheng

angle in a-Cu2V2O7

松坂 信之介, 那波 和宏, 奥山 大輔, Wu

Short-range spin correlations in the new quantum

Hung-Cheng

triangular-lattice compound Ba3Yb(BO3)3

Pharit Piyawongwatthana, Kazuhiro Nawa, Daisuke
Okuyama, Wu Hung-Cheng
Taku J Sato

Tohoku University

Shinnosuke Matsuzaka, Kazuhiro Nawa, Daisuke
Okuyama, Wu Hung-Cheng

16

反強磁性量子臨界的挙動がもたらす異常超伝導

横山 淳

茨城大学

物性 I
17

２等辺三角格子イジング磁性体CoNb2O6のワ
満田 節生

東京理科大学ニエ状態における磁気相関川崎 郁斗, 平山 堅理, 矢代 安澄, 井能 楓, 清 Anomalous superconducting properties coupled

Makoto

水 悠晴

Yokoyama

with antiferromagentic quantum criticality I

小澤 竜也, 内原 猛, 玉造 博夢, 澤田 大地, 岡 Magnetic correlations at the Wannier point in村 洸輝

Setsuo Mitsuda
isosceles triangular lattice Ising magnet CoNb2O6

Ibaraki University

カゴメ格子反強磁性体におけるマグノンスピン那波 和宏

東北大学

軌道角運動量ロッキング

Piyawongwatthana Pharit, 下館 凌人, 松坂
信之介

GPTAS

4G

GPTAS

4G

GPTAS

4G

GPTAS

4G

GPTAS

4G

GPTAS

4G

Kusanose, Tomoya Kanno, Motoki Takano, Syota Hoshino, GPTAS

4G

Kaede Inou, Yusei Shimizu
Tokyo University of

Tatsuya Kozawa, Takeru Uchihara, Hiromu Tamatsukuri,

Science

Daichi Sawada, Kouki Okamura

佐藤 卓, Matan Kittiwit, 村崎 遼,
18

Ikuto Kawasaki, Takatoshi Hirayama, Azumi Yashiro,

Taku J Sato, Matan Kittiwit, Ryo Murasaki,
Magnon spin-momentum locking in kagome
Kazuhiro Nawa

Tohoku University

antiferromagnets

Piyawongwatthana Pharit, Ryoto Shimodate, Shinnosuke
Matsuzaka

Successive phase transition in the spin-1/2
19

スピン1/2フラストレート正方格子磁性体
那波 和宏

東北大学

2VOSO4̲H2SO4̲nH2Oの逐次相転移

20 Au64Ga22Tb14近似結晶の逐次相転移

21 量子スピン液体の研究

柴田 将弥, 佐藤 卓, Wu Hung-Cheng, Pharit
Piyawongwatthana

那波 和宏

門脇 広明

東北大学

東京都立大学

frustrated square lattice magnet

Kazuhiro Nawa

Tohoku University
Piyawongwatthana

2VOSO4̲H2SO4̲nH2O
鈴木 慎太郎, 田村 隆治, 佐藤 卓, 鈴木 慎太

Successive phase transitions of the quasicrystal郎, Farid Labib, Wu Hung-Cheng, 村崎 遼

approximant Au64Ga22Tb14

佐藤 卓

Quantum spin liquid

Masaya Shibata, Taku J Sato, Wu Hung-Cheng, Pharit

Kazuhiro Nawa

Tohoku University

Shintaro Suzuki, Ryuji Tamura , Taku J Sato, Shintaro
Suzuki, Farid Labib, Wu Hung-Cheng, Ryo Murasaki
HiroakiTokyo Metoropolitan

Kadowaki

University

Taku J Sato

Soichiro Mizutani, Rikako Yamamoto, Yasuyuki Shimura,
水谷 宗一郎, 山本 理香子, 志村 恭通, 大山
22

有効スピン1/2のジグザグ鎖をもつ磁性半導体
鬼丸 孝博

広島大学

YbAgSe2における相転移の秩序変数

研司, 小坂 昌史, 道村 真司, 草ノ瀬 優香, 菅野 友哉, 高野 元輝, 星 翔太, 小林 洋大, 富松

Order parameter of a phase transition in amagnetic semiconductor YbAgSe2 with an effective
spin-1/2 zigzag chains

Kenji Ohoyama, Masashi Kosaka, Shinji Michimura, Yuka
Takahiro
Hiroshima University
Onimaru
Yodai Kobayashi, Yuka Tomimatsu, Koki Aizawa, Syuta

優花, 會澤 幸希, 川上 修汰
Kawakami
Order parameter of the phase transition of a
23立方晶PrCdNi4の非磁性基底二重項による相転
鬼丸 孝博

広島大学

草ノ瀬 優香, 志村 恭通, 岩佐 和晃

移の秩序変数24

25

26

compound PrCdNi4
Search for non-coplanar magnetism in 2D van-

ヒルシュベル

der-Waals materials

ガー マックス

van-der-Waals magnet HoTe3 with spin chirality: ヒルシュベル
a magnetic structure study
ハーフホイスラー型DyPtBiにおける一軸応力に

nonmagnetic ground state doublet in a cubic

東京大学

東京大学

中島 多朗, 赤塚 駿

中島 多朗, 赤塚 駿

ガー マックス
上田 健太郎東京大学

黒川 亮

よる磁気ドメイン制御

Waals materials

Maximilian

van-der-Waals magnet HoTe3 with spin chirality: a

Hirschberger

magnetic structure study

Maximilian

uniaxial pressure control of magnetic domains inYuka Kusanose, Yasuyuki Shimura, Kazuaki Iwasa

GPTAS

4G

The University of Tokyo

Nakajima Taro, Akatsuka Shun

PONTA

5G

The University of Tokyo

Nakajima Taro, Akatsuka Shun

PONTA

5G

Kentaro Ueda

The University of Tokyo

Ryo Kurokawa

PONTA

5G

Ochanomizu University

Minoru Soda, Kotomi Nakamura, Foley Edward

PONTA

5G

PONTA

5G

half-Heusler DyPtBi
Hazuki
古川 はづきお茶の水女子大学

左右田 稔, 中村 琴美, Foley Edward

Contribution of magnetism on spin current in NiOする研究

Furukawa

塑性歪みを加えたPt3Fe反強磁性体における強28

Hiroshima University
Onimaru

Search for non-coplanar magnetism in 2D van-der- Hirschberger

NiO酸化物の磁気相転移とスピンカレントに関
27Takahiro

松尾 咲琴, 堀田 侑里, 西館 直樹, 中野 愛弓, Behavior of ferromagnetic domains under magnetic Satoru
小林 悟

岩手大学

磁性ドメインの磁場中挙動
29 キラルな立方晶磁性体Mn3IrSiの逐次磁気相転移 有馬 孝尚

東京大学

Sakoto Matsuo, Yuri Hotta, Naoki Nishidate, Ayumi
Iwate University

後藤 颯樹
Gautam Kamini, 厳 正輝

fields for plastically strained Pt3Fe antiferromagnet Kobayashi
Successive Magnetic Transitions in a Chiral Cubic

Nakano, Satsuki Goto

Takahisa Arima

The University of Tokyo

Gautam Kamini, Masaki Gen

PONTA

5G

Takahisa Arima

The University of Tokyo

Yusuke Tokunaga, Daigo Ishizaki, Takashi Kurumaji

PONTA

5G

Yoshiya Homma, Yusei Shimizu, Dai Aoki

PONTA

5G

PONTA

5G

PONTA

5G

Magnet Mn3IrSi
30 CaBaCo4-xNixO7における巨大な電気磁気効果

有馬 孝尚

東京大学

徳永 祐介, 石崎 大悟, 車地 崇

本多 史憲

九州大学

本間 佳哉, 清水 悠晴, 青木 大

中性子回折による反強磁性体UPt3Al5の磁気構
31

Magnetic structure study of an antiferromagnet

造の研究
32

中性子回折による擬カゴメ構造化合物 URhSn の励起子絶縁体候補物質Ca0.5Pr0.5CoO3の中性子散乱

Fuminori Honda Kyushu University
UPt3Al5 using neutron diffraction

田端 千紘

京都大学

多極子秩序構造の研究
33

Giant Magnetoelectric Effect in CaBaCo4-xNixO7

益田 隆嗣

東京大学

清水 悠晴, 今 布咲子, 網塚 浩, 中尾 裕則, 齋 Neutron diffraction study on multipole order in
Chihiro Tabata
藤開

pseudo-Kagom? structure compound URhSn

浅井 晋一郎, 三宅 岳志, 菊地 帆高, Liu

Neutron Scattering Study for Excitonic Insulator

Takatsugu

ZheyuanCandidate Ca0.5Pr0.5CoO3

MasudaKyoto University

Yusei Shimizu, Fusako Kon, Hiroshi Amitsuka , Hironori
Nakao, Hiraku Saito
The University of Tokyo

Shinichiro Asai, Takeshi Miyaka, Hodaka Kikuchi, Liu
Zheyuan

34

Eu系ダイアモンド格子物質における磁場中偏極

車地 崇

東京大学

有馬 孝尚, 徳永 祐介, 中島 多朗, 齋藤 開

中性子散乱実験35

UPt2X2 (X = Si, Ge)における電荷密度波と反強磁
網塚 浩

北海道大学

性の共存状態の研究
36

時間反転対称性の破れた反強磁性体の磁気構造
関 真一郎

東京大学

In field polarized neutron scattering on Eu-based

Takashidiamond magnet

Kurumaji

今 布咲子, 日比野 瑠央, 田端 千紘, 清水 悠

Study on the coexistence of CDW and AFM in晴, 中尾 裕則, 齋藤 開, 中島 多朗

UPt2X2 (X = Si, Ge)中島 多朗, 高木 里奈, 摂待 裕生

解析

Magnetic structure analysis of antiferromagnets

The University of Tokyo

Takahisa Arima, Yusuke Tokunaga, Tato Nakajima, Hiraku

PONTA

5G

PONTA

5G

PONTA

5G

PONTA

5G

Saito

Hiroshi Amitsuka Hokkaido University

Fusako Kon, Ruo Hibino, Chihiro Tabata, Yusei Shimizu,
Hironori Nakao, Hiraku Saito, Taro Nakajima
Shinichiro Seki

The University of Tokyo

Kazuhiro Nawa

Tohoku University

Taro Nakajima, Rina Takagi, Yuki Settai

with broken time-reversal symmetry
平井 大悟郎, 廣井 善二, 佐藤 卓, 村崎 遼,

37

異方的三角格子反強磁性体Ca3ReO5Cl2におけ
那波 和宏

東北大学

る非整合磁気構造38

フェリ磁性絶縁体Tb3Fe5O12 における音響マ

Wu Hung-Cheng, Piyawongwatthana
Pharit

南部 雄亮

東北大学

川本 陽

グノンモード の磁場依存性
39

偏極中性子散乱法によるEu(Al0.6Ga0.4)4の磁気

Incommensurate magnetic structure of nisotropic
triangular lattice antiferromagnet Ca3ReO5Cl2
Magnetic field dependent acoustic mode in the

Daigoro Hirai , Zenji Hiroi , Taku J Sato, Ryo Murasaki, Wu
Hung-Cheng, Piyawongwatthana Pharit

Yusuke Nambu

Tohoku University

You Kawamoto

TOPAN

6G

Rina Takagi

The University of Tokyo

Taro Nakajima,Shinnichirou Seki

PONTA

5G

Yoichi Ikeda

Tohoku University

TOPAN

6G

TOPAN

6G

HER

C1-1

HER

C1-1

Rika Tokita, Makoto Mogi

HER

C1-1

Hidekazu Tanaka, Takatsugu Masuda

HER

C1-1

HER

C1-1

HER

C1-1

HER

C1-1

HER

C1-1

HER

C1-1

HER

C1-1

ferrimagnetic insulator Tb3Fe5O12
高木 里奈

東京大学

中島 多朗, 関 真一郎

構造解析

Magnetic structure analysis of Eu(Al0.6Ga0.4)4 bypolarized neutron scattering
Crystalline electric field states around a valence40重い電子系超伝導体CeCu2Si2における価数クロ
池田 陽一

東北大学

スオーバー領域における結晶場電子状態

41

FeMn基Elinvar合金の非線形フォノン分散異常樹, 大亀 佑太

池田 陽一

東北大学

の研究
42

Nonreciprocal magnon dispersion in a

北澤 崇文, 藤田 全基, 梅本 好日古, 二見 采

南部 雄亮

東北大学

Study of anomalous non-linear phonon dispersion

樹, 大亀 佑太

in an FeMn-based Elinvar alloy

Pang Xiaoqi, 川又 雅広

Nd3Co4Sn13のカイラル対称結晶構造相におけフラストレーション磁性体YbBaCo4O7におけ

岩佐 和晃

茨城大学

左右田 稔

お茶の水女子大学

下田 愛海, 熊田 隆伸, 桑原 慶太郎, 今関 啓

Magnetic excitations in chiral structure phases of雅, 黒澤 航海, 鈴木 陽太郎

Nd3Co4Sn13

鴇田 莉佳, 茂木 麻琴

る磁気散漫散乱45

スピンギャップ系KCuCl3の圧力誘起量子臨界点

ワイル−近藤半金属物質Ce3Rh4Sn13のカイラ

栗田 伸之

東京工業大学

岩佐 和晃

茨城大学

イルメナイトNiTiO3におけるディラックマグノ

田中 秀数, 益田 隆嗣

Magnetic fluctuation in chiral structure phases of雅, 黒澤 航海, 鈴木 陽太郎

the Weyl-Kondo semimetal Ce3Rh4Sn13

東京大学

Yusuke Nambu

Tohoku University

Kazuaki Iwasa

Ibaraki University

Pang Xiaoqi, Masahiro Kawamata
Ami Shimoda, Takanobu Kumada, Keitaro Kuwahara,
Hiromasa Imazeki, Wataru Kurosawa, Yotaro Suzuki

Minoru Soda

Nobuyuki Kurita

Ochanomizu University
Tokyo Institute ofTechnology

Kazuaki Iwasa

Ibaraki University

Takatsugu
The University of Tokyo

上智大学

小宮山 陽太, 谷口 貴紀, 藤田 全基, 林 幹稀

Yota Komiyama, Takanori Taniguchi, Masaki Fujita, Motoki
Tadashi Adachi

Sophia University

2201 cuprates
益田 隆嗣

東京大学

乱

Shinichiro Asai, Wei Jijun, Hodaka Kikuchi, Liu Zheyuan

MasudaMagnetic fluctuations in the heavily overdoped Bi-

足立 匡

Ami Shimoda, Takanobu Kumada, Keitaro Kuwahara,
Hiromasa Imazeki, Wataru Kurosawa, Yotaro Suzuki

Dirac magnon in NiTiO3
Zheyuan

磁気ゆらぎ
スピン液体候補物質NaErSe2の中性子非弾性散

Magnetic excitation of spin gap system KCuCl3 in下田 愛海, 熊田 隆伸, 桑原 慶太郎, 今関 啓

Bi-2201系銅酸化物の超過剰ドープ領域における

49

Magnetic Diffuse Scattering in Frustrated Magnet

浅井 晋一郎, Wei Jijun, 菊地 帆高, Liu
益田 隆嗣

ンの観測
48

Yoshihiko Umemoto, Masaki Fujita, Takafumi Kitazawa,
Saiki Futami, Yuta Ohki

the vicinity of pressure-induced QCPル構造相での磁気ゆらぎ
47

Tohoku University

YbBaCo4O7近傍における磁気励起
46

Yoichi Ikeda

antiferromagnet

る磁気励起
44

Nonreciprocal magnon dispersion in a Dresselhaus

Takahumi Kitazawa, Masaki Fujita, Yoshihiko Umemoto,
Saiki Futami, Yuta Ohkisuperconductor CeCu2Si2

梅本 好日古, 藤田 全基, 北澤 崇文, 二見 采

Dresselhaus antiferromagnet
43

crossover region in the heavy fermion

Hayashi

Ma Jie, 浅井 晋一郎, 菊地 帆高, Liu

Inelastic neutron scattering study on spin liquid

Takatsugu

Zheyuan, Shu Mingfang, Jiao Jinlong

candidate NaErSe2

MasudaThe University of Tokyo

Ma Jie, Shinichiro Asai, Hodaka Kikuchi, Liu Zheyuan, Shu
Mingfang, Jiao Jinlong

Long-period magnetic structure in a heavy fermion
50

電気磁気交差相関現象を示すCe3TiX5(X=Bi, Sb)
阿曽 尚文

琉球大学

の長周期磁気構造

本山 岳, 篠崎 真碩, 田中 真侑, 佐藤 滉太, 中
川 敬太

antiferromagnet Ce3TiX5(X=Bi, Sb) exhibiting

Naofumi Asoelectromagnetic cross-correlation phenomenon

University of the

Gaku Motoyama, Masahiro Shinozaki, Mayu Tanaka, Kota

Ryukyus

Sato, Keita Nakagawa

Magnetic dispersion and the space-time correlation
単結晶NdCo2Zn20における磁気分散と低エネル
51

山本 理香子, 志村 恭通, 岩佐 和晃, 下田 愛
鬼丸 孝博

ギー磁気励起の時空相関

広島大学

Takahiroof low-energy excitations in single-crystalline

海

NdCo2Zn20

Rikako Yamamoto, Yasuyuki Shimura, Kazuaki Iwasa, Ami
Hiroshima University

Onimaru

Shimoda52

Structure characterization of model tetra-

Li Xiang北海道大学

poly(acrylic acid) gel

Gupit Caidric, 光上 義朗, 柴山 充弘, 辻 優

Structure characterization of model tetra-

依, 大平 征史

poly(acrylic acid) gel

Li Xiang

Hokkaido University

スピン1/2フラストレート正方格子磁性体
那波 和宏

東北大学

2VOSO4̲H2SO4̲nH2Oの磁気励起

54

中性子散乱法によるコアシェル型超分子ナノ

Piyawongwatthana Pharit, 下館 凌人, 松坂信之介

上沼 駿太郎

東京大学

眞弓 皓一, 數實 治己

シートの構造解析
55

小角中性子散乱による高圧下のタンパク質の構井上 倫太郎

京都大学

造解析
56

コントラスト変調SANSによる小麦タンパク質
佐藤 信浩

京都大学

の複合構造解析57

制御された不均一性を導入した過渡的網目の構
Li Xiang

北海道大学

58

中性子小角散乱実験によるSr2RuO4の異常金属

空間反転対称性の破れた超伝導体のヘリカル磁

強磁性超伝導体における自発的磁束格子構造の古川 はづきお茶の水女子大学

ナノ・サブナノ空隙へのゲスト分子の選択的吸

古川 はづきお茶の水女子大学

古川 はづきお茶の水女子大学

千葉 文野

慶應義塾大学

蔵現象の解明62

中性子散乱によるカタニオニック界面活性剤がRintaro Inoue

HER

C1-1

The University of Tokyo

Kyoto University

Nobuhiro Sato

Kyoto University

contrast variation SANS
Structure and mechanical properties of transient

Koichi Mayumi, Haruki Kazumi

SANS-U

C1-2

Reiko Urade, Masaaki Sugiyama, Koichiro Sadakane, Naoki
SANS-U

C1-2

SANS-U

C1-2

SANS-U

C1-2

SANS-U

C1-2

AizawaReiko Urade, Aya Okuda, Masahiro Shimizu, Masaaki
Sugiyama, Rintaro Inoue, Ken Morishima
Li Xiang

左右田 稔, 石田 茜, Foley Edward, 中村 琴

Anomalous vortex state in Sr2RuO4 studied by

Hazuki美SANS experiments

Furukawa

Herical vortex phase on non-centrosymmetric

Hazukisuperconductors

Furukawa

Spontaneous vortex phase in ferromagnetic

Hazukisuperconductors

Furukawa

左右田 稔, 伊藤 未希, Foley Edward

左右田 稔, 植木 萌, Foley Edward

研究61

Shuntaro

裏出 令子, 奥田 綾, 清水 将裕, 杉山 正明, 井 Structural analysis on wheat protein assembly by

束格子の観測60

Uenumananosheetstudied by small-angle neutron scattering

Piyawongwatthana Pharit, Ryoto Shimodate, Shinnosuke

Hokkaido University

Masashi Ohira, Takamasa Sakaipolymer network with controlled heterogeneity

状態の研究
59

Tohoku University

Matsuzaka
Structural analysis of supramolecular core-shell

Strutural analysis of protein under high pressure as

大平 征史, 酒井 崇匡

Kazuhiro Nawa
lattice magnet 2VOSO4̲H2SO4̲nH2O

樹造と物性評価C1-2

Masaya Shibata, Taku J Sato, Ryo Murasaki,
Spin excitations of the spin-1/2 frustrated square

裏出 令子, 杉山 正明, 貞包 浩一朗, 會澤 直

上 倫太郎, 守島 健

SANS-UYui Tsuji, Masashi Ohira

柴田 将弥, 佐藤 卓, 村崎 遼,
53

Gupit Caidric, Yoshiro Mitsukami, Mitsuhiro Shibayama,

吉村 倫一

奈良女子大学つくる泡沫の構造解析

Ochanomizu University

Minoru Soda, Akane Ishida, Foley Edward, Kotomi
Nakamura
Ochanomizu University

Minoru Soda, Miki Ito, Foley Edward

SANS-U

C1-2

Ochanomizu University

Minoru Soda, Moe Ueki, Foley Edward

SANS-U

C1-2

Ayano Chiba

Keio University

Hiroki Ito, Hiroki Iwase, Hiromi Murashige, Yurika Enomoto SANS-U

C1-2

伊藤 大基, 岩瀬 裕希, 村重 博美, 榎本 優里

Selective absorption phenomena of guest

香molecules in nano- and sub-nano pores

矢田 詩歩, 王 珊, 長濱 佑美, 渡邊 萌, 岩瀬

Structural analysis of foam formed by catanionic

Tomokazu

Nara Women's

Shiho Yada, Shan Wang, Yumi Nagahama, Moe

裕希surfactants using neutron scattering

Yoshimura

University

Watanabe, Yuki Iwase

Yuya Doi

Nagoya University

SANS-U

C1-2

Ryuya Isoda

SANS-U

C1-2

Yuya Doi

SANS-U

C1-2

SANS-U

C1-2

Evaluation of structural change with temperature63

小角中性子散乱法によるナノクレイ/高分子懸濁
土肥 侑也

名古屋大学

磯田 龍矢

change in nanoclay/polymer suspensions studied

液中の温度変化に伴う構造変化の評価
by small-angle neutron scattering
Microscopic Deformation Mechanism of PE under64

小角中性子散乱測定による延伸過程で生じるPE

木田 拓充の構造変化メカニズムの解明

北陸先端科学技術

土肥 侑也

大学院大学

スライドリング網目を有するイオンゲルの延伸

奈良女子大学

矢田 詩歩, 長濱 佑美, 渡邊 萌, 王 珊

68

均一網目構造を有する過渡的網目における結合

gel transition of amino acid - sugar hybridsurfactants using small-angle neutron scattering

橋本 慧

東京大学

眞弓 皓一, 榎木 崇人

中における網目構造変化
67

Technology

Strain-induced structural change of slide-ring

Tomokazu

Nara Women's

Shiho Yada, Yumi Nagahama, Moe Watanabe, Shan

Yoshimura

University

Wang

Kei Hashimoto

The University of Tokyo

Koichi Mayumi, Takato Enoki

SANS-U

C1-2

The University of Tokyo

Masashi Ohira, Takashi Yasuda, Li Xiang, Takamasa Sakai SANS-U

C1-2

Shinshu University

Mina Sakuragi, Shota Fujii

C1-2

network in ion gel
Effects of Connectivity and Concentration on

Takuya性・濃度と構造相関

Structure in Transient Homogeneous Reticulation

Katashima

コントラストマッチング中性子散乱法によるハ

Structural Analysis of Polymer Domains in Hybrid

イブリッドベシクル中の ポリマードメインの構

Institute of Science andStructural analysis of micelle - worm-like micelle 吉村 倫一

移の構造解析
66

Japan Advanced
Takumitsu Kida

measurement
中性子小角散乱によるアミノ酸−糖ハイブリッ
65 ド界面活性剤の ミセル̶紐状ミセル̶ゲル転Tensile Deformation Detected by SANS

片島 拓弥

東京大学

大平 征史, 安田 傑, Li Xiang, 酒井 崇匡

Vesicles by Contrast-Matched Neutron Scattering:

Tomoki

造解析：ポリマー重合度とドメインサイズの相Relationship between Degree of polymerization

Nishimura関and Domain Size

西村 智貴

信州大学

櫻木 美菜, 藤井 翔太

SANS-U中性子小角散乱によるマルチドメインタンパク
69

杉山 正明

京都大学

高圧条件下における混合溶液系の新奇な臨界挙
70

Conformation analysis of multi-domain protein

Masaakiutilizing small-angle neutron scattering

Sugiyama

井上 倫太郎, 矢木-内海 真穂, 守島 健

質のドメイン配置解析
同志社大学

眞弓 皓一, 小田 達郎, 吉良 康弘, 後藤 篤子
solvent under high-pressure condition

界面活性剤が誘起する液-液相分離のメカニズム

水と低分子有機溶媒のみの２成分混合溶液にお同志社大学

吉良 康弘, 後藤 篤子, 三桝 黎, 和田 竜誠

小角中性子散乱による重合誘起ガラス化近傍で

貞包 浩一朗同志社大学

吉良 康弘, 後藤 篤子, 高椋 利幸

鈴木 祥仁

大阪府立大学土肥 侑也, 眞弓 皓一の不均一性解析
中性子散乱法によるシンジオタクチックポリス
岩原 大輔, 武部 智明, 藤井 望, 森谷 太祐, 酒
井 一帆

高椋 利幸

佐賀大学

佐々木 魁斗, 筒井 奏, 樋熊 知紗, 山田 萌乃

系イオン液体のモルフォロジー観測
76

イミダゾリウム系イオン液体中におけるエタ
高椋 利幸

佐賀大学

佐々木 魁斗, 筒井 奏, 樋熊 知紗, 山田 萌乃

ノールクラスターの形成
77

ポリアルキルスチレン類とポリイソプレンの相
高野 敦志

名古屋大学

溶性評価と相溶化機構の検討
78

酸化ジルコニウムナノ流体の水のダイナミクス

Koichi Mayumi, Tatsuro Oda, Yasuhiro Kira, Atsuko Goto

SANS-U

C1-2

Phase separation induced by surfactants

Doshisha University

Yasuhiro Kira, Atsuko Goto, Rei Mimasu, Ryusei Wada

SANS-U

C1-2

Crossover from mean field to 3D-Ising critical

Koichiro

behavior in water/organic solvent mixtures

Sadakane

Doshisha University

Yasuhiro Kira, Atsuko Goto, Toshiyuki Takamuku

SANS-U

C1-2

Polymerization induced phase separation at theYasuhito Suzuki

Yuya Doi, Koichi Mayumi

SANS-U

C1-2

SANS-U

C1-2

Osaka Prefecture
University

Crystalline structural analysis of syndiotakuctic
山形大学

晶高次構造解析
SANS法による分子性液体中でのピリジニウム

Doshisha University
Sadakanevicinity of vitrification investigated by SANS

74 チレン/アタクチックポリスチレンブレンドの結 西辻 祥太郎

75

C1-2

Sadakane

ける臨界現象の平均場/3D-Isingクロスオーバー
73

SANS-U

Koichiro
貞包 浩一朗の解明
72

Rintaro Inoue, Maho Yagi-Utsumi, Ken Morishima

Novel critical behavior in a mixture of water/organic Koichiro
貞包 浩一朗動と隠れた長距離相互作用の解明
71

Kyoto University

吉田 亨次

福岡大学

polystyrene / atactic polystyrene blend by neutron
scattering method

Shotaro

SANS Study on Morphology of Pyridinium-based

Toshiyuki

Ionic Liquids in Molecular Liquids

Takamuku

Ethanol Cluster Formation in Imidazolium-based

Toshiyuki

Ionic Liquids

Takamuku

都築 侑奈, 北原 彩音, 土肥 侑也, 鈴木 海渡, Investigation of miscibility between
安田 悠真

polyalkylstyrenes and polyisoprene by SANS

永井 哲郎

Water dynamisc of zirconium oxide nanofluid

Yamagata University

Nishitsuji

Atsushi Takano

Daisuke Iwahara, Tomoaki Takebe, Nozomu Fujii, Taisuke
Moritani, Kazuho Sakai

Saga University

Kaito Sasaki, Sou Tsutsui, Chisa Higuma, Moeno Yamada

SANS-U

C1-2

Saga University

Kaito Sasaki, Sou Tsutsui, Chisa Higuma, Moeno Yamada

SANS-U

C1-2

SANS-U

C1-2

AGNES

C3-1-1

SANS-U

C1-2

Nagoya University

Yuna Tsuzuki, Ayane Kitahara, Yuya Doi, Kaito Suzuki,
Yuma Yasuda
Koji Yoshida

Fukuoka University

Tetsuro Nagai

測定
A study on the structural changes of casein micelles
79

中性子・X線散乱法を利用した外部環境変化に高木 秀彰
伴う牛乳内カゼインミセル構造変化の研究

80

架橋高分子ゲルSephadex G25に吸着・内包さ高エネルギー加速with the change of external environments using
器研究機構

山室 憲子

東京電機大学湊 広章, 柳 凌聖

疎水性環境下における水クラスターのダイナミ
岡 弘樹

大阪大学

山室 修, 秋葉 宙

クスに関する研究

Dynamic properties of water confined in cross-

Norikolinked polymer gel Sephadex G-25

Yamamuro

Study on the dynamics of water clusters inHigh Energy Accelerator
Research Organization

neutron and X-ray scattering

れた水の動的挙動
81

Hideaki TakagiTokyo Denki University

Hiroaki Minato, Ryosei Yanagi

AGNES

C3-1-1

Kouki Oka

Osaka University

Osamu Yamamuro, Hiroshi Akiba

AGNES

C3-1-1

Kiyoshi Kawai

Hiroshima University

Tomochika Sogabe, Hiroshi Nakagawa, Takeshi Yamada

AGNES

C3-1-1

Kiyoshi Kawai

Hiroshima University

AGNES

C3-1-1AGNES

C3-1-1AGNES

C3-1-1MINE

C3-1-2MINE

C3-1-2hydrophobic environment
Freeze-concentrated glass transition behavior of82

中性子準弾性散乱法による糖溶液の凍結濃縮ガ
川井 清司

広島大学

曽我部 知史, 中川 洋, 山田 武

ラス転移挙動の解明

83

可塑剤が非晶質アミロペクチンの分子ダイナミ

scattering
川井 清司

広島大学

曽我部 知史, 中川 洋, 山田 武, 加賀谷 勇生

クスに及ぼす影響
福岡大学

中性子準弾性散乱法による高水素配位錯イオン

86 中性子基礎物理実験のためのデバイス開発

87 超冷中性子スピン解析器の開発

Junji Inukai, Teppei Kawamoto, Hiromichi Nishiyama, Yuto
Dynamics of hydrated anion exhange membrain

Koji Yoshida

Fukuoka University

Solomon Wekesa, Anna Kapulwa
高木 成幸

東北大学

の動的挙動解析
北口 雅暁

川崎 真介

名古屋大学

Shirase, Solomon Wekesa, Anna Kapulwa

山室 修, 大政 義典, 秋葉 宙, 折茂 慎一, 安達 Quasi-elastic neutron scattering study of hydride
淳

Tomochika Sogabe , Hiroshi Nakagawa, Takeshi Yamada,
Yuki Kagaya

犬飼 潤治, 川本 鉄平, 西山 博通, 白勢 裕登,
吉田 亨次

ス測定
85

Effect of plasticizer on the molecular dynamics ofamorphous amylopectin

水和したアニオン交換型電解質膜のダイナミク
84

carbohydrate solutions by quasielastic neutron

Shigeyuki Takagi Tohoku University
complexes with high hydrogen coordination

Shinichi Orimo, Jun Adachi

清水 裕彦, 奥平 琢也, 藤家 拓大, 奥泉 舞桜, Development of neutron devices for fundamental

Masaaki

南部 太郎, 椿原 暖人, 長屋 沙優

Kitaguchi

physics

Osamu Yamamuro, Yoshinori Ohmasa, Hiroshi Akiba,

Nagoya University

Hirohiko Shimizu, Takuya Okudaira, Takuhiro Fujiie, Mao
Okuizumi, Taro Nambu, Haruto Tsubakihara, Sayu Nagaya

高エネルギー加速

三島 賢二, 市川 豪, 北口 雅暁, 樋口 嵩, 今城 Development of a Spin Analyzer for Ultra Cold

ShinsukeHigh Energy Accelerator Kenji Mishima, Go Ichikawa, Masaaki Kitaguchi , Takashi

器研究機構

想平, 赤塚 浩明, 畑中 吉治

Kawasaki

Research Organization

Neutron

Higuchi, Sohei Imajo, Hiroaki Akatsuka, Kichiji Hatanaka

88

中性子反射率法による各種基油内における添加

平山 朋子

京都大学

日野 正裕, 山下 直輝, 中村 吏一朗

剤吸着層の構造解析
89

多層膜性中性子ミラーの高度化と集光デバイス
日野 正裕

京都大学

開発
90

MOFガラスにおけるゲスト分子のダイナミクス
秋葉 宙

東京大学

に関する研究91

ガラスキャピラリープレートを用いた中性子イ

π電子反強磁性体RbO2の結晶構造および磁気特異な価数秩序を示すYbPdの最低温磁気構造解

Hirayama

中村 吏一朗, 細畠 拓也, 小田 達郎, 奥野 泰

Development of multilayer neutron mirrors and希focusing devices

佐藤 創, Yin Zheng, Zeng Ming-Hua, 山室

門叶 冬樹

山形大学

Dynamics of guest molecules in MOF glass

Masahiro Hino

Kyoto University

Kyoto University

野 紘輝
中野 岳仁

茨城大学

神戸 高志, 紺谷 駿, 大山 研司, 塩見 透慎

光田 暁弘

九州大学

大山 研司, 横枕 拓八

Riichiro Nakamura, Takuya Hosobata, Tatsuro Oda, Yasuki

MINE

C3-1-2MINE

C3-1-2AGNES

C3-1-1MINE

C3-1-2

HQR

T1-1

HQR

T1-1

HQR

T1-1

MINE

C3-1-2

AKANE

T1-2

Okuno
Hiroshi Akiba

The University of Tokyo

Fuyuki Tokanai

Yamagata University

type MPGD with glass capillary plate

Hajime Sato, Yin Zheng, Zeng Ming-Hua, Osamu

Magnetic and crystal structural studies on π-orbital

Magnetic structure at lowest temperatures of exotic

Masahiro Hino, Toru Moriya, Mirei Takeyama, Kanta
Takahashi, Hiroki Asano
Takehito Nakano Ibaraki University

antiferromagnet RbO2

析

Masahiro Hino, Naoki Yamashita, Riichiro Nakamura

Yamamuro, Shun Sato, Zhang Menghan

日野 正裕, 森谷 透, 武山 美麗, 高橋 貫太, 浅 Development of neutron imager based on hole-

構造解析
93

TomokoVarious Base Oils by Neutron Reflectometry

修, 佐藤 駿, Zhang Menghan

メージング検出器の開発
92

Structural Analysis of Adsorbed Additive Layer in

Takashi Kanbe, Shun Kontani, Kenji Ohoyama, Toma
Shiomi
Akihiro Mitsuda

Kyushu University

Kenji Ohoyama, Takuya Yokomakura

valence-ordered YbPd
Ikuto Kawasaki, Takatoshi Hirayama, Azumi Yashiro,

94

反強磁性量子臨界的挙動がもたらす異常超伝導
横山 淳

茨城大学

物性II

95

中性子スピン干渉現象を用いた3次元偏極解析
田崎 誠司

京都大学

川崎 郁斗, 平山 堅理, 矢代 安澄, 井能 楓, 清 Anomalous superconducting properties coupled

Makoto

水 悠晴, 小泉 遼介, 海老澤 秀明, 高橋 哲平

Yokoyama

安部 豊, 鈴木 雄也

手法の開発

with antiferromagentic quantum criticality II
3D polarization analysis using resonance neutron

Seiji Tasaki

Ibaraki University

Ebisawa, Teppei Takahashi
Kyoto University

f電子系金属間化合物が持つフラストレーション
谷口 貴紀

東北大学

効果の研究

97

アンモニウム含有層状ハライドペロブスカイト郎, 磯村 楓, Xie Peiao, Wang Tong, Chen

Masaki Fujita, Yusuke Nambu, Yoichi Ikeda, Kotaro Osato,
the frustrated effects on f electron system

Zhu Tong

京都大学

陰山 洋

Takanori
Tohoku University
Taniguchi
Yizhou, 北山 慎之介の結晶と磁気構造の変化

Crystal and Magnetic Structural Evolutions of

六方ペロブスカイト関連酸化物の結晶構造とイ

Zhu Tong

Kyoto University

Crystal Structure and Ion Diffusion Path of Ion-

Masatomo

Tokyo Institute ofConducting Hexagonal Perovskite-Related Oxides

Yashima

Technology

アニオン置換・挿入による層状ペロブスカイト

Daichi Kato

Kyoto University

Hiroshi Kageyama

HERMES T1-3

Layered Ammonium Halide Perovskites

八島 正知

東京工業大学

オン拡散経路99

Kaede Isomura, Xie Peiao, Wang Tong, Chen Yizhou,
Shinnosuke Kitayama

藤井 孝太郎, 張 文鋭, 安井 雄太, 矢口 寛, 作
98

Yutaka Abe, Yuya Suzuki

spin interferometry
藤田 全基, 南部 雄亮, 池田 陽一, 大里 耕太

96

Kaede Inou, Yusei Shimizu, Ryosuke Koizumi, Hideaki

田 祐一, 齊藤 馨, 森川 里穂, 上野 那智, 松崎航平, 山田 大史

加藤 大地

京都大学

のtilting制御

Kotaro Fujii, Wenrui Zhang, Yuta Yasui, Hiroshi Yaugchi,

生方 宏樹, 陰山 洋, 松崎 洋介, 田畔 春紀, 津 Tilting design of layered perovskite via anion
森 竜也

insertion and substitution

Yuichi Sakuda, Kei Saito, Riho Morikawa, Nachi Ueno,

HERMES T1-3

Kohei Matsuzaki, Taishi Yamada
Hiroki Ubukata, Hiroshi Kageyama, Yosuke Matsuzaki,
HERMES T1-3
Haruki Taguro, Tatsuya Tsumori

Magnetic structure of the bilayered twoMagnetic structure of the bilayered two100 dimensional triangular antiferromagnet

南部 雄亮

東北大学

Tang Yifei

中性子散乱法による高濃度界面含有複合体内Li
101
高圧合成によって得られる遷移金属ペロブスカ

九州大学

単結晶中性子回折による三角格子反強磁性体面

Tang Yifei

HERMES T1-3

Saneyuki Ohno

Kyushu University

Naoto Okazaki, Shoma Yanagihara

HERMES T1-3

Structures and formula of transition metal

Takafumi

Tokyo Institute of
Hiroyasu Okochi, Ryotaro Hanabusa, Taiki Kosuge

HERMES T1-3

oxyhydride synthesized under high pressure

Yamamoto

Technology

Yusuke Nambu

Tohoku University

Masahiro Kawamata

AKANE

岡崎 直斗, 柳原 祥馬
the vicinity of heterogeneous interfaces

山本 隆文

東京工業大学大河内 寛保, 英 遼太郎, 小菅 大輝

イト酸水素化物の構造と組成
103

Tohoku University

Exploration of structure-transport relationship in大野 真之

伝導固体のLi状態解析
102

Yusuke Nambu
dimensional triangular antiferromagnet Fe2Ga2S5

Fe2Ga2S5

南部 雄亮

東北大学

川又 雅広

内磁気構造の同定

Magnetic structure refinement of triangular

八島 正知, 藤井 孝太郎, 安井 雄太, 矢口 寛, Crystal Structure Analysis and Oxide-Ion Diffusion
104

Dion‐Jacobson型酸化物イオン伝導体の結晶構
造とイオン拡散経路の解析

T1-2

antiferromagnets under fields

張 文鋭

東京工業大学

作田 祐一, 齊藤 馨, 森川 里穂, 上野 那智, 松 Paths of Dion‐Jacobson type Oxide-ion
崎 航平, 山田 大史

Conductors

Masatomo Yashima,Kotaro Fujii, Yuta Yasui, Hiroshi
Wenrui Zhang

Tokyo Institute ofTechnology

Yaugchi, Yuichi Sakuda, Kei Saito, Riho Morikawa, Nachi
Ueno, Kohei Matsuzaki, Taishi Yamada

HERMES T1-3

Magnetic structure comparison between Ce3TiSb5
105

電気磁気交差相関現象が期待されるCe3TiSb5と
本山 岳

島根大学

阿曽 尚文, 篠﨑 真碩, 中川 敬太, 佐藤 滉太

Ce3ZrSb5の磁気構造の比較

106

中性子回折法によるハイパーカゴメ反強磁性体

Gaku Motoyama Shimane University

気谷 卓

東京工業大学

Neutron diffraction study on hyperkagome
川路 均

Suguru Kitani
antiferromagnet ZnMgMn3O8

高橋 英史

大阪大学

南部 雄亮

Tokyo Institute of

新規酸塩化物イオン伝導体の結晶構造解析とイ
藤井 孝太郎

東京工業大学

Clarification of magnetic structure in magnetic

Hidefumi

semimetal

Takahashi

オン伝導機構解明

109

T*構造銅酸化物の結晶構造に対する酸素アニー
藤田 全基

東北大学

ル効果

祐一, 齊藤 馨, 森川 里穂, 上野 那智, 松崎 航 Conduction Mechanism of Novel Oxychloride Ion
平, 山田 大史Conductors

谷口 貴紀, 池田 陽一, 陳 逸舟, 谢 佩翱, 王Oxidation annealing effects on the crystal structure

彤, 北山 慎之介

of T*-type cuprate oxides

Osaka University

谷口 貴紀

東北大学

郎, 鄭 家傑, 小宮山 陽太, 岡田

陸玖, Xie

Hitoshi Kawaji

HERMES T1-3

Yusuke Nambu

HERMES T1-3

Masatomo Yashima, Wenrui Zhang, Yuta Yasui, Hiroshi
Kotaro Fujii

Tokyo Institute ofTechnology

Masaki Fujita

Tohoku University

Yaugchi, Yuichi Sakuda, Kei Saito, Riho Morikawa, NachiHERMES T1-3

Ueno, Kohei Matsuzaki, Taishi Yamada
Takanori Taniguchi, Yoichi Ikeda, Chen Yizhou, Xie Peiao,
HERMES T1-3
Wang Tong, Shinnosuke Kitayama

藤田 全基, 南部 雄亮, 池田 陽一, 大里 耕太
110 YbCu4Niの量子臨界性と結晶構造の関係

HERMES T1-3

Technology

八島 正知, 張 文鋭, 安井 雄太, 矢口 寛, 作田 Crystal Structure Analysis and Elucidation of Ion
108

Naofumi Aso, Masahiro Shinozaki, Keita Nakagawa, Kota
Satomaterials

ZnMgMn3O8の研究
107 磁性半金属における磁気構造の解明

and Ce3ZrSb5 of two candidate magnetoelectric

Masaki Fujita, Yusuke Nambu, Yoichi Ikeda, Kotaro Osato,
Quantum criticality and crystal structure on YbCu4Ni
Peiao, Wang Tong, Chen Yizhou, 北山 慎之

Takanori
Tohoku University
Taniguchi

Zheng Jiajie, Yota Komiyama, Riku Okada, Xie Peiao, Wang HERMES T1-3
Tong, Chen Yizhou, Shinnosuke Kitayama介
111 Au72Si12.5Eu13.5近似結晶の磁気構造

112

ハニカム格子様化合物Pb6Co9(TeO6)5の磁気構

那波 和宏

那波 和宏

東北大学

東北大学

鈴木 慎太郎, 田村 隆治, 佐藤 卓, 村崎 遼,

Magnetic structure of the quasicrystal approximant

Wu Hung-Cheng

Au72Si12.5Eu13.5

平岡 巧, 佐藤 卓

造
113 ホイスラー合金Ru2CrSiの反強磁性状態
114

Nd3T4Sn13 (T = Rh, Ir)のカイラル対称結晶構造

重田 出
岩佐 和晃

鹿児島大学
茨城大学

廣井 政彦, 渕崎 員弘, 南部 雄亮

鈴木 陽太郎東北大学

HERMES T1-3

Kazuhiro Nawa

Tohoku University

Takumi Hiraoka, Taku J SatoHERMES T1-3

Iduru Shigeta

Kagoshima University

Masahiko Hiroi, Kazuhiro Fuchizaki, Yusuke Nambu

HERMES T1-3

Kazuaki Iwasa

Ibaraki University

phases of Nd3T4Sn13 (T = Rh, Ir)

Pang Xiaoqi, 木村 宏之, 山本 孟, 川又 雅広

小林 悟

岩手大学

木村 宏之

東北大学

Tohoku University

Satoru後藤 颯樹

Kobayashi

Oxygen reduction effect on the crystal structure in

FONDER T2-2
Masahiro Kawamata

松尾 咲琴, 堀田 侑里, 西館 直樹, 中野 愛弓, Magnetic structural analysis of plastically strained

坂倉 輝俊, 山本 孟

HERMES T1-3
Pang Xiaoqi, Hiroyuki Kimura, Hajime Yamamoto,

Yusuke Nambu

Pt3Fe antiferromagnet

Ami Shimoda, Takanobu Kumada, Hiromasa Imazeki,
Wataru Kurosawa, Yotaro Suzuki

magnet解析
117 T'-type Pr2CuO4における結晶構造の還元効果

Shintaro Suzuki, Ryuji Tamura , Taku J Sato, Ryo Murasaki,
Wu Hung-Cheng

Estimate the DM interaction in a Dresselhaus
南部 雄亮

magnet塑性歪みを加えたPt3Fe反強磁性体の磁気構造

Antiferromagnetic state of Heusler alloy Ru2CrSi

下田 愛海, 熊田 隆伸, 今関 啓雅, 黒澤 航海, Antiferromagnetic ordered states in chiral structure

Estimate the DM interaction in a Dresselhaus

116

Tohoku University

compound Pb6Co9(TeO6)5相における反強磁気秩序
115

Magnetic structure of the honeycomb lattice like

Kazuhiro Nawa

Iwate University

Sakoto Matsuo, Yuri Hotta, Naoki Nishidate, Ayumi
FONDER T2-2
Nakano, Satsuki Goto

Hiroyuki Kimura

Tohoku University

Terutoshi Sakakura, Hajime Yamamoto

FONDER T2-2

Hiroyuki Kimura

Tohoku University

Terutoshi Sakakura, Hajime Yamamoto, Yukio Noda

FONDER T2-2

Yuta Ishii

Tohoku University

Hiroyuki Kimura, Yukio Noda, Hajime Yamamoto

FONDER T2-2

University of Tsukuba

Takuro Kawasaki

FONDER T2-2

Kyoto University

Yusuke Nambu, Kantaro Murayama, Tong Zhu

HERMES T1-3

University of Tsukuba

Takuro Kawasaki, Kunimitsu Kataoka

FONDER T2-2

de Boissieu Marc, de Laitre Geoffroy

GPTAS

the Tʼ-structure of Pr2CuO4+y118

マルチフェロイックEuMn2O5における強誘電

木村 宏之

東北大学

坂倉 輝俊, 山本 孟, 野田 幸男

相転移の起源119 Tb0.5Gd0.5Mn2O5の電気磁気効果の発現機構

Origin of ferroelectric phase transition in
multiferroic EuMn2O5

石井 祐太

東北大学

木村 宏之, 野田 幸男, 山本 孟

Mechanism of Magneto-electric effect of
Tb0.5Gd0.5Mn2O5
120

typeIII 型反強磁性体 Pt-Mn における整合ー非整高橋 美和子

筑波大学

川崎 卓郎

合磁気相転移導電性酸化物における極性-非極性構造相転移と
121

MiwakoTransition in Type-III Anti-ferromagnet Pt-Mn

Takahashi

Polar-Nonpolar Phase Transition in Conductive
高津 浩

京都大学

南部 雄亮, 村山 寛太郎, Tong Zhu

その構造解析
122 二糖類水和物の結晶構造

Commensurate-Incommensurate Magnetic Phase

Hiroshi Takatsu
Oxides and Their Structural Analysis

高橋 美和子筑波大学

川崎 卓郎, 片岡 邦光

Crystal structure of hydrate disaccharide

MiwakoTakahashi
123

正二十面体準結晶i-ZnMgYにおける光学フォノ
ンモードの研究柴田 薫

日本原子力研究開発機構

de Boissieu Marc, de Laitre Geoffroy

Optical Phonon Modes in the ZnMgY icosahedral
quasicrystal

Kaoru Shibata

Japan Atomic Energy
Agency4Gcorrelation between valence fluctuation and Fermi
価数揺動希土類化合物における電荷揺らぎと
124

Japan Synchrotron

高輝度光科学研究筒井 智嗣

フェルミ面ネスティング

李 哲虎, 光田 暁弘, 和田 裕文

surface nesting in a valence-fluctuating rare-earth

Satoshi Tsutsuicompound125

三角格子反強磁性体CuFeO2の圧力誘起磁気相

Radiation Research

Chul-Ho LEE, Akihiro Mitsuda, Hirofumi Wada

GPTAS

4G

HER

C1-1

HER

C1-1

SANS-U

C1-2

Kiyoshi Kawai, Tomochika Sogabe, Takeshi Yamada

AGNES

C3-1-1

Takeshi Yamada

AGNES

C3-1-1Hiroshi Nakagawa, Naomi Ueda

AGNES

C3-1-1

センター

寺田 典樹

Pressure dependence of magnetic excitation in

物質材料研究機構

転移に伴う磁気励起の探査

Institute
Noriki Terada

triangular lattice antiferromagnet CuFeO2

National Institute forMaterials Science
National Institute of

126 Mg3Sb2のフォノンダイナミクス

李 哲虎

産業技術総合研究坂上 良介, 小野 圭吾, 長谷川 巧, 後藤 陽介

Phonon dynamics of Mg3Sb2

Chul-Ho LEE

所

127

水中で距離秩序構造を形成するイオン性ボトル

山内 祥弘

Science and Technology
物質材料研究機構

ブラシポリマーの構造解明
128

グリセロール水溶液の低温における水のダイナ
中川 洋
ミクスの研究129

分子構造の異なる澱粉の動的挙動とその加熱糊

日本原子力研究開
川井 清司, 曽我部 知史, 山田 武
発機構
中川 洋

化による変化の解析

Advanced Industrial

日本原子力研究開
山田 武
発機構

Structural Analysis of Ionic Bottlebrush Polymers

Yoshihiro

National Institute for

Forming Long-range Order in Water

YamauchiMaterials Science

Study of water dynamics in aqueous glycerol

HiroshiJapan Atomic Energy

solutions at cryo-temperatures

Nakagawa

AgencyMolecular dynamics of starches with different

HiroshiJapan Atomic Energy

molecular structures and their changes by heating

Nakagawa

AgencyProvenance study of excavated amber by inelastic

Shigeoneutron scattering.

Yamaguchi

Investigations on the local structure of liquid sulfur

Yoshifumi

at photo-induced polymerization transition II

Sakaguchi

Ryosuke Sakagami, Keigo Ono, Takumi Hasegawa, Yosuke
Goto

Gangoji institute for
130 中性子非弾性散乱による出土琥珀の産地推定

山口 繁生

公益財団法人元中川 洋, 植田 直見

興寺文化財研究所

research of culturalproperty
Comprehensive131

液体イオウの光誘起重合転移における局所構造
坂口 佳史

総合科学研究機構の研究II

Research Organization

HERMES T1-3

for Science and Society
National Institute of
132 熱電材料143ジントル相の結晶構造

李 哲虎

産業技術総合研究坂上 良介, 小野 圭吾, 三浦 章, 出村 萌々香

所133

中性子回折法による新奇フラストレート磁性体
辻本 吉廣

物質材料研究機構

Crystal structure of 143 Zintl phase thermoelectric

Chul-Ho Lee

compounds

南部 雄介, 林 浩章

BaFe12Se7O6の磁気構造解析

Advanced Industrial
Science and Technology

Powder neutron diffraction study of a new spin-

Yoshihiro

National Institute forfrustrated magnet BaFe12Se7O6

TsujimotoMaterials Science

Ryosuke Sakagami, Keigo Ono, Akira Miura, Momoka

HERMES T1-3

DemuraYusuke Nambu, Hiroaki Hayashi

HERMES T1-3

Comprehensive
エルビウム鉄ガーネットの磁気補償温度での磁
134

社本 真一

山内 宏樹, 赤津 光洋, 松浦 直人, 坂倉 輝俊, Magnetic structure anomaly at the magnetic

Shinichi

木村 宏之, 張 烈錚compensation temperature of erbium iron garnet

Shamoto山内 宏樹, Chang Lieh-Jeng, 坂倉 輝俊, 木Double frustration with face-centered cubic lattice

Shinichi

村 宏之

of triangular magnetic clusters

Shamoto

総合科学研究機構

気構造異常

Hiroki Yamauchi, Mitsuhiro Amatsu, Masato Matsuura,
Research Organizationfor Science and Society

FONDER T2-2
Terutoshi Sakakura, Hiroyuki Kimura, Lieh-Jeng Chang

Comprehensive
135

三角磁気クラスターの面心立方格子による二重フラストレーション

社本 真一

総合科学研究機構

Research Organizationfor Science and Society

Hiroki Yamauchi, Chang Lieh-Jeng, Terutoshi Sakakura,
Hiroyuki Kimura

FONDER T2-2

2022年度 軌道放射物性研究施設 共同利用課題一覧 / Joint Research List of Synchrotron Radiation Research Project 2022

播磨分室
No.

※実施課題一覧、所属は申請時のデータ

BL07LSU/Harima Branch BL07LSU

課題番号

課題名

氏名

所属

分担者（共同研究者）

Title

Name

Organization

Member of reseach
担当所員
project
Next Generation Catalysis Science Opened by
1 202103-SRBXS-0030

軟X線オペランド計測の高度化が拓く次世代触媒科
山本

達

学

東北大学多元物質科学研究
Sophistication of Operando Soft X-ray
所
Spectroscopies
志村 まり（国立国際医療研究セ

2 202012-SRBXS-0009

次世代光源に向けた全反射ウォルターミラーを利木村 隆志

東京大学物性研究所

用した新規X線イメージング技術の開発

ンター）、江川 悟（理化学研究所）、古谷 登、竹尾 陽子、櫻井SusumuTohoku University

Development of Novel X-ray Imaging
Technology using Total Reflection Walter Mirror for松田

Yamamoto

Mari Shimura, Satoshi
Takashi Kimura

The Institute for Solid State
Physics, The University of Tokyo
Next Generation Light Source.

Egawa, Noboru Frutani,

木村Youko Takeo, Kai Sakurai快江川 悟（理化学研究所・博士研
3 202111-SRBXG-0005

CT-ptychographyによる細胞内構造変化の解析

志村 まり

国立国際医療研究センター 究員）、古谷 登、竹尾 陽子、櫻井快

Satoshi Egawa, Noboru
Changes of cellular structures using
Mari Shimura
CT-ptychography

National Center for Global
Health and Medicine

大谷 義近（東京大学物性研究
4 202112-SRBXG-0012

非磁性金属/酸化膜界面における軌道偏極の観測

金 俊延

理化学研究所

Frutani, Youko Takeo, Kai 木村
Sakurai

Yoshichika Otani,所）、堀尾 眞史（東京大学物性

Observation of orbital polarization at non-magnetic

研究所）、妹尾 共晃（東京大学

metal/oxide interface

Kim Junyeon

Institute ofPhysical andChemical Research

Masafumi Horio, Tomoaki 松田
Senou

物性研究所）Development of a Highly-Sensitive Method for
交流電流と位相検波を用いた高感度オペランド
5 202112-SRBXG-0026

XMCD計測手法の開発: 特異な量子スピン輸送現象 堀尾 眞史

東京大学物性研究所

妹尾 共晃、鷲見 寿秀

Operando-XMCD using AC Current and Phase
Masafumi Horio
Detection Technique: Operando-Spectroscopy ofのオペランド分光

The Institute for Solid State

Tomoaki Senou,松田

Physics, The University of Tokyo Toshihide Sumi

Exotic Quantum Spin Transport Phenomena
堀尾 眞史（東京大学物性研究
偏光可変軟X線による二次元単層ホウ化銅の電子状
6 202112-SRBXP-0028

Electric states of 2D copper boride studied by
近藤 剛弘

筑波大学

態の研究

所）、辻川 夕貴（東京大学物性研究所）

Masafumi Horio, Yuki
Takehiro Kondo

University of Tsukuba

polarization controlled soft X-ray
Electronic structure of water confined in aqueous

7 202111-SRBXG-0001

ミクロ相分離水性二相系における水の電子状態

檜垣 勇次

大分大学理工学部

舛田 拓己、倉岡 直輝

Takumi Masuda, Naoki
Yuji Higaki

Oita University

microphase two-phase systems

堀内 新之介Nagasaki University School ofSoft X-ray emission spectroscopic analysis of 1D

Shinnosuke

water channel within a noncovalent porous crystal

Horiuchi

長崎大学大学院工学研究科 所）、小倉 祥太、辰田 和穂（東元水チャネルの電子状態解析
京大学物性研究所）

原田
Kurata

木内 久雄（東京大学物性研究
分子間相互作用からなる細孔性結晶に形成した1次
8 202111-SRBXG-0003

松田
TsujikawaHisao Kiuchi, Shouta
Engineering & Graduate Schoolof Engineering

原田
Ogura, Kazuho Tatsuta

Electronic states analysis of oxygen
9 202112-SRBXG-0006

オペランド軟X線吸収/発光分光分析によるアルカ

辰田 和穂

東京大学物性研究所

木内 久雄

リ水電解酸素発生触媒の電子状態解析

evolution reaction catalyst for alkaline water

Kazuo Tatsuta

electrolysis by Operando soft x-ray absorption and

The Institute for Solid State

Hisao Kiuchi

原田

Hisao Kiuchi

原田

Physics, The University of Tokyo

emission spectroscopy
Study on the electronic structure of nitride cathode10 202112-SRBXG-0007

共鳴非弾性X線散乱法を用いた全固体フッ化物電池
窒化物正極の電子状態分析

山本 健太郎奈良国立大学機構奈良女子 木内 久雄（東京大学物性研究
大学研究院工学系

所）

for all-solid-state fluoride ions batteries by resonant
inelastic X-ray scattering

KentaroYamamoto

Nara Women's University

宮脇 淳（量子科学技術研究開発
機構）、張 文雄、山添 康介、
11 202112-SRBXG-0008

気相試料の軟X線発光角度異方性の研究

倉橋 直也

Jun Miyawaki, Wenxiong
Study of soft X-ray emission angular anisotropy of

東京大学物性研究所

The Institute for Solid State

Zhan, Kosuke Yamazoe,

Naoya Kurahashi
UGALINO RALPH（東京大学）、 gas phase原田
Physics, The University of Tokyo Ugalino Ralph, Hisao

木内 久雄

Kiuchi

尾嶋 正治（東京大学）、永村 直

Masaharu Oshima, Naoka

佳、小嗣 真人（東京理科大

Nagamura, Masato,
Electronic state analysis of earth-abundant Fe‒Al‒

12 202112-SRBXG-0010

顕微分光による新規合金系熱電材料”FAST材”の電高際 良樹

物質・材料研究機構

子状態解析II学）、吉成 朝子（東京理科大学）、竹澤 伸吾（東京理科大Si thermoelectric (FAST) materials using scanningphotoelectron microscopy (II)YoshikiNational Institute for Materials

Takagiwa

Science

学）、津田 俊輔

Kotsugi, Asako Yoshinari,
原田
Shingo Takezawa,
Shunsuke Tsuda

13 202112-SRBXG-0011

グラフェン/強誘電体ヘテロ構造の時間分解光電子
松田 巌

東京大学物性研究所

山本 達（東北大学）、堀尾 眞史

分光研究Time-resolved photoemission investigation of
Iwao Matsuda
graphene-ferroelectric heterostructure

The Institute for Solid State

Susumu Yamamoto,松田

Physics, The University of Tokyo Masafumi Horio

倉橋 直也（東京大学物性研究
14 202111-SRBXG-0014

フラーレンに内包された水分子の電子状態解析

橋川 祥史

京都大学化学研究所所）、木内 久雄（東京大学物性

Analysis of Electronic Configuration for a Water

Yoshifumi

Institute for Chemical Research, Naoya Kurahashi, Hisao

研究所）、貞井 俊平（京都大Molecule Encapsulated inside a Fullerene

Hashikawa

Kyoto University

Kiuchi, Shunpei Sadai

National Institute ofEiji Hosono, Tomohiro

原田学）
Operando soft X-ray emission spectroscopy of
15 202112-SRBXG-0018

全固体リチウムイオン電池を用いた電極材料のオ
朝倉 大輔

産業技術総合研究所

ペランド軟X線発光分光 3

細野 英司、石山 智大、小林 正起（東京大学）

electrode materials by using all-solid-state Li-ion

Daisuke Asakura Advanced Industrial Science

battery 3

and Technology

Ishiyama, Masaki

原田

Kobayashi

The Institute for
16 202112-SRBXG-0020

ニッケル錯体アニオン塩ベシクル膜と水和する中藤野 智子

東京大学物性研究所

伊藤 雅聡

間水の軟X線電子状態解析

Soft X-ray structural analysis of constrained water
Tomoko Fujino
molecules on nickel-complex anion salt vesicles

Solid State Physics, The

Masatoshi Ito

原田University of Tokyo
Operando ambient pressure X-ray photoelectron
レーザー切断により作製したMoS2エッジ面および
17 202112-SRBXG-0021

金属修飾面の電子状態と化学種のオペランド雰囲

spectroscopy study of the electronic states and吉信 淳

東京大学物性研究所

向井 孝三、尾崎 文彦、田中 駿介 chemical properties of the clean and metal

気光電子分光による研究

The Institute for
Jun Yoshinobu

deposited MoS₂ edge planes fabricated by laser

Solid State Physics, The
University of Tokyo

Kozo Mukai, Fumihiko
松田
Ozaki, Tanaka Shunsuke
cutting
朝倉 大輔（産業技術総合研究所）、細野 英司（産業技術総合
18 202112-SRBXG-0024

その場光電子分光法によるリチウム過剰正極材料
張 文雄

東京大学物性研究所の熱挙動研究所）、尾嶋 正治（東京大学）、永村 直佳（物質・材料研

The Institute for
Thermal behavior of lithium-rich cathode material
Zhang Wenxiong Solid State Physics, The
by in-situ photoemission spectroscopy
University of Tokyo

Disuke Asakura, Eiji
Hosono, Masaharu
Oshima, Naoka
Nagamura, Hisao Kiuchi究機構）、木内 久雄

原田Unveiling the mechanism of the appearance of

19 202112-SRBXG-0025

酸化物界面における高移動度二次元キャリア気体
小林 正起の発現機構解明

東京大学大学院工学系研究科

Understanding the influence of surface charge
20 202112-SRBXG-0029
corneum lipids by O K-edge XASand XES

high-mobility two-dimensional carrier gas states at
an oxide SrTiO3 interface

MasakiSamarai

東京大学物性研究所

Takahito Takeda
原田

The Institute forinduced by ultrafine water (UFW) on the reduction

Mustafa alof the transepidermal water loss in the stratum

Samaraicorneum lipids by O K-edge XAS and XES

The University of Tokyo
Kobayashi

Understanding the influence of surface charge

induced by ultrafine water (UFW) on thereduction of Mustafa al
the transepidermal water loss in the stratum

武田 崇仁

Solid State Physics, The
University of Tokyo
原田Investigation of Fe Doping Effects on the Electronic
Co 2p3d RIXSを用いた水酸化触媒用酸化コバルト
21 202112-SRBXG-0031

電着自己修復薄膜の電子構造に対するFe添加効果

Olaf Rudiger

Structure of Cobalt Oxide Electrodeposited SelfGroup Leader

Olaf Rudiger
Repair Thin Films for Water Oxidation Catalystsの検討

Max Planck Institute for
Chemical Energy Conversation

using Co 2p3d RIXS

原田

柏キャンパスE棟 / Laser and Synchrotron Radiation Laboratory in Kashiwa
No

課題番号

課題名

氏名

所属

分担者（共同研究者）

Title

Name

Organization

Member of reseach
担当所員
project
1 202203-CMBXX-0067

トポロジカル絶縁体Bi2Te3薄膜におけるスピン軌
八田 振一郎Studying spin-orbit dynamics of
京都大学

道ダイナミクスの1研究2 202111-GNBXX-0024

Pb系トポロジカル絶縁体のスピン角度分解光電子

Shinichiro Hatta

Kyoto University

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

近藤

猛

topological insulator Bi2Te3 thin film
矢治 光一郎物質・材料研究機構

永村直佳、津田俊輔

分光

SARPES study of a Pb-based

National Institute for Materials

Naoka Nagamura,

ScienceShunsuke Tsuda

Kaname Kanai

Tokyo University of Science

Reina Moue

Takahiro Ito

Nagoya University

Koichiro Yaji
topological insulator
Enhancement of Rashba splitting on organic

3 202111-GNBXX-0011

有機分子水素結合ネットワーク/貴金属界面におけ金井 要

東京理科大学馬上怜奈るラシュバ分裂の増大

4 202112-GNBXX-0069

Zr3SnC2のスピン分解角度分光光電子分光

molecular hydrogen bond network/noble metalinterface

伊藤 孝寛

名古屋大学

杉本卓史、三田愛也

Spin- and Angle-resolved
photoemission study of Zr3SnC2

光によるハーフメタル強磁性体La1-xSrxMnO3のManaya Mita

Observation of NQP state in half metal
バルク敏感高分解能スピン分解角度分解光電子分
5 202112-GNBXX-0047

takushi Sugimoto,

横谷 尚睦

岡山大学

片岡範行、瀬戸口太朗

NQP 状態の観測

ferromagnet La1-xSrxMnO3 by bulksensitive high-Takayoshi

resolution spin and angle resolved

YokoyaOkayama University

Noriyuki Kataoka, Taro
Setoguchi

photoemissionspectroscopy
Unconventional angular distribution of
6 所内

低エネルギー励起光電子強度分布における隠れた田中 宏明

東京大学物性研究所

川口海周

パラメータの探索

photoemission intensity
Hiroaki Tanaka
in low-energy angle-resolved photoemission

The Institute for Solid State
Kaishu Kawaguchi
Physics, The University of Tokyo

spectroscopy
7 所内

Surface state spin polarization measurement of Co

Huh Soonsang

東京大学物性研究所

森亮、川口海周

doped LaFeAsO
8 所内

トポロジカル絶縁体 Bi2Te3 薄膜におけるスピン偏Surface state spin polarization

Huh Soonsang

measurement of Co doped LaFeAsO
川口 海周

東京大学物性研究所

八田 振一郎（京都大学）

極バンド構造の膜厚依存性

The Institute for Solid State

Ryo Mori, Kaishu

Physics, The University of Tokyo Kawaguchi

Thickness dependence of spin-polarized band

KaishuThe Institute for Solid State

structure in topological insulator Bi2Te3 thin films

Kawaguchi

Physics, The University of Tokyo University)

Shinichiro Hatta (Kyoto

Kaname Kanai

Tokyo University of Science

Direct observation of quantum well states induced
9 202205-GNBXX-0124

金属表面に形成された水素結合有機フレームワー
金井 要

東京理科大学馬上怜奈

by the hydrogen-bonded organic frameworks

Reina Moueクによって誘起される量子井戸状態の直接観測
formed on metal surface
Takushi Sugimoto,杉本卓史、保科 拓海、三田愛
10 202206-GNBXX-0128

Hex-Au(100)上グラフェンにおけるπバンドスピン
構造の研究

伊藤 孝寛

名古屋大学

Takumi Hoshina, Manaya
也、寺澤 知潮（日本原子力研究

Spin structure study of π band of開発機構)、小山 正太郎、強 博

Graphene on Hex-Au(100)文

Takahiro Ito

Nagoya University

Mita, Tomo-o Terasawa(JAEA), Shotaro Oyama,
Bowen Qiang

Naoka Nagamura,Shunsuke Tsuda, Shingo
11 202206-GNBXX-0140

強磁性体基板上のグラフェンのスピン角度分解光矢治 光一郎物質・材料研究機構

電子分光

永村直佳、津田俊輔、竹澤 伸吾

SARPES study of graphene（東京理科大学）、中村 友謙

on ferromagnetic substrates

Koichiro Yaji

National Institute for Materials
ScienceTakezawa (Tokyo

近藤

猛

近藤

猛

近藤

猛

University of Science),
Tomonori Nakamura

12 202206-GNBXX-0138

4d強磁性酸化物SrRuO3薄膜における準粒子状態の
小林 正起

東京大学

スピン分極評価
13 所内

Investigation of spin polarization of surface statesin NbIrTe4

Huh Soonsang

東京大学物性研究所

武田 崇仁

Elucidation of the spin polarization of the quasi-

Masaki

particle states in 4d ferromagnetic oxide SrRuO3

Kobayashi

Investigation of spin polarization of
surface states in NbIrTe4

Huh Soonsang

The University of Tokyo
The Institute for Solid State
Physics, The University of Tokyo

Takahito Takeda

2022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 2022

※採択課題一覧、所属は申請時のデータ

1. 第一原理計算 / First-Principles Calculation of Materials Properties
No.

課題番号

課題名

氏名

所属

密度汎関数理論と機械学習法による不均一触媒の1 2022-Ea-0007

森川 良忠
密度汎関数理論による物性予測杉野 修

東京大学物性研究所

量子論大規模計算による半導体薄膜成長とデバイ
3 2022-Ea-0003

押山 淳
第一原理基高速計算フレームワークによる不規則
笠松 秀輔
表面、界面、欠陥等の複雑構造における原子構造

Department of Precision Engineering, Graduate

functional theory and machine learning methods

Morikawa

School of Engineering, Osaka University

Prediction of material properties using the density functional theory

Osamu Sugino

Institute for Solid State Physics, University of Tokyo

Clarification of Microscopic Mechanisms of Semiconductor Epitaxial Growth andAtsushi

Device-Interface Formation by Large-Scale Quantum-Theory-Based Computations

Oshiyama

Understanding structure-property relationships of disordered materials using first-

Shusukeprinciples based high-throughput simulation framework

Kasamatsu

Institute of Materials and Systems for Sustainability

山形大学学術研究院

材料系の構造・物性相関の解明
5 2022-Ca-0065

Organization

Yoshitada

名古屋大学未来材料・システム研究所

ス界面形成の微視的機構解明
4 2022-Ea-0010

Name

Theoretical study on dynamical processes in heterogeneous catalysis using density
大阪大学 大学院工学研究科 物理学系専攻

動的過程の理論的研究
2 2022-Ea-0008

Title

Academic Assembly, Yamagata University

東京大学大学院工学系研究科マテリアル工学専 Analyses related to atomic structures and atom dynamics at complex structures

Satoshi

Department of Materials Engineering, School of

攻WatanabeEngineering, The University of Tokyo渡邉 聡と原子ダイナミク スに関する解析

such as surfaces, interfaces and defects

第一原理電子状態・輸送特性計算コードRSPACEの6 2022-Ca-0095

Development of first-principles calculation code RSPACE and design of highly
小野 倫也

神戸大学大学院工学研究科電気電子工学専攻
functional interface

第一原理電子状態‧輸送特性計算コードRSPACEの

Development of first-principles calculation code RSPACE and design of highly

7 2022-Cb-0043

小野 倫也

神戸大学大学院工学研究科電気電子工学専攻

開発と高機能界面のデザイン

Department of Electrical and Electronic Engineering,
Tomoya Ono

開発と高機能界面のデザイン

Graduate School of Engineering, Kobe University
Department of Electrical and Electronic Engineering,
Tomoya Ono

functional interface

8 2022-Ca-0049

三元系最密充填構造に基づく新物質探索

尾崎 泰助

9 2022-Cb-0015

CeO2(100)面上でのWater-splittingによる水素生成 横 哲

Graduate School of Engineering, Kobe University

東京大学物性研究所

Computational materials discovery based on densest ternary sphere packings

Taisuke Ozaki

東北大学材料科学高等研究所

Hydrogen production by water splitting on CeO2 (100) facet

Akira Yoko

Institute for Solid State Physics, The University ofTokyo

10 2022-Cb-0051

原子層状物質における大規模電子輸送特性につい江上 喜幸

北海道大学大学院工学研究院ての第一原理研究11 2022-Ca-0006

12 2022-D-0001

磁気異方性の界面歪みと界面電気分極による制御
ポリマーの多階層物理と深層学習を掛け合せた

14 2022-Ca-0059

光応答性機能材料の第一原理的研究
2次元層状ヘテロ構造における第一原理電子輸送特

合田 義弘

佐藤 正寛

東京工業大学物質理工学院材料系

東京大学大学院工学系研究科

異常ホール効果を計算する正確で効率的な方法の

常行 真司
江上 喜幸

東京大学大学院理学系研究科物理学専攻
北海道大学大学院工学研究院

石井 史之

17 2022-Ca-0024

18 2022-Ca-0040

19 2022-Ca-0051

Discovery of Super-Composite Electrical Insulating Materials Based on Multiscale

Yoshihiro

Department of Materials Science and Engineering,

GOHDA

Tokyo Institute of Technology

Masahiro Sato

Dept. of Eng., The University of Tokyo

First-principle study of photoresponsive functional materials
First-principles electron-transport study on 2D layered material-based

Shinji Tsuneyuki Department of Physics, University of Tokyo
Yoshiyuki Egami Faculty of Engineering, Hokkaido University

金沢大学ナノマテリアル研究所

Development of an accurate and efficient method for calculating the anomalousFumiyuki Ishii

Kanazawa University

Hall effect

光起電力応用ナノクリスタルの第一原理計算によビュクール マリる研究

ウス

スピン注入磁化反転型磁気抵抗メモリ(STT-MRAM)

Control of magnetic anisotropy by strain and electric polarization at interfaces

heterostructures

開発
16 2022-Cb-0001

Yoshiyuki Egami Faculty of Engineering, Hokkaido University

Physics and Deep Learning of Polymers

性研究
15 2022-Cb-0044

WPI-AIMR, Tohoku University

materials

スーパーコンポジット電気絶縁材料の創成
13 2022-Ca-0103

First-principles study on electron-transport properties of large scale atomic layered

白石 賢二

国立研究開発法人産業技術総合研究所

First-principles computational study of nanocrystals for photovoltaic applications

Marius Buerkle

National Institute of Advanced Industrial Scienceand Technology
名古屋大学

未来材料・システム研究所

First Principles Studies on Spin Tranfer Torque Magnetic Randum Access Memory
Kenji Shiraishi

Institute of Materials and Systems for Sustainability,の第一原理計算による研究(STT-MRAM)

格子振動に由来する負熱膨張材料の機構解明と設Elucidation and design principle of negative thermal expansion originating from

Yasuhide

School of Materials and Chemical Technology,

計指針創出

lattice vibration

Mochizuki

Tokyo Institute of Technology

高圧力下における共有結合性液体‧ガラスの構造とFirst-Principles Molecular-Dynamics Study of Structural and Electronic Properties of
Fuyuki Shimojo

Department of Physics, Kumamoto University

電子状態の第一原理計算

望月 泰英

下條 冬樹

東京工業大学物質理工学院

熊本大学大学院先端科学研究部
Covalent Liquids and Glasses under Pressure

Nagoya University

20 2022-Ca-0091
21 2022-Ea-0011

第一原理計算に基づく熱機能材料の開発
第一原理計算に立脚したグリーンデバイスの提塩見 淳一郎

東京大学工学系研究科

松下 雄一郎

東京工業大学

Development of Thermal Functional Materials Based on First-principles Simulations Junichiro Shiomi School of Engineering, The University of Tokyo

案：材料探索からデバイス作製まで
22 2022-Ca-0104

大規模第一原理電気伝導計算法による量子伝導理

小林 伸彦

筑波大学 数理物質系

物理工学域

論

Proposal for Green Devices Based on First-Principles Calculations: From Material

Yu-ichiro

Exploration to Device Fabrication

Matsushita

Quantum transport theory by large scale first-principles electron transport

NobuhikoDepartment of Applied Physics, University ofcalculations

Kobayashi

Tsukuba

Tokyo Institute of Technology

Center for Advanced Research of Energy and23 2022-Cb-0030

燃料電池電極触媒とギ酸分解触媒の省貴金属化

坂口 紀史

北海道大学大学院工学研究院

附属エネル

Reduction of Rare Metals in Fuel Cell and Formic Acid Decomposition Catalysts

ギー・マテリアル融合領域研究センター

Norihito

Materials, Faculty of Engineering, Hokkaido

Sakaguchi
University
Satoshi

24 2022-Cb-0029

金属酸化物のプラズマ耐性に関する研究

浜口 智志

大阪大学工学研究科

Study on plasma resistance of metal oxides

Graduate School of Engineering, Osaka University
Hamaguchi

第一原理分子動力学法に基づくガラスの静的構造
25 2022-Ca-0027

Machine learning study on static structure of glass materials based on {\it ab initio}
高良 明英

熊本大学技術部

Akihide Koura

に関する機械学習を用いた研究
電子論と古典溶液理論による界面反応の第一原理
26 2022-Ca-0043

First-principles simulation of interfacial reactions using density functional theory and大谷 実

筑波大学計算科学研究センター

Center for Computational Sciences, The University
Minoru Otani

シミュレーション

classical liquid theory

電場下の半導体pn接合界面でのトンネル電流の理

Theory of tunneling currents at semiconductor pn junctions in electric fields based

Takashion first-principles calculation

Nakayama

First-principles bandstructure calculation of organic crystals with the electron-

SusumuDepartment of Physics and Earth Sciences, Facultyphonon coupling

Yanagisawaof Science, University of the Ryukyus

27 2022-Ca-0074

中山 隆史

Department of Physics, Chiba University

第一原理計算による電子--フォノン結合を考慮した
28 2022-Cb-0010

柳澤 将

琉球大学理学部物質地球科学科物理系

有機結晶のバンド計算
第一原理計算を用いた熱伝導度データベース作成

中村 和磨

of Tsukuba

千葉大学理学部物理学科

論：第一原理計算に基づく研究

29 2022-D-0005

Technical Division, Kumamoto University

molecular dynamics

九州工業大学

Construction of thermal conductivity database from first principles

KazumaKyushu Institute of Technology
Nakamura
30 2022-Cb-0038

第一原理計算に基づく熱機能材料の開発

塩見 淳一郎31 2022-Cb-0031

高効率な酸素吸蔵材料と水素遮蔽材料の探索

國貞 雄治

東京大学工学系研究科

Development of Thermal Functional Materials Based on First-principles Simulations Junichiro Shiomi School of Engineering, The University of Tokyo
Center for Advanced Research of Energy and

32 2022-Ca-0087

全電子混合基底法プログラムの改良と応用

大野 かおる北海道大学大学院工学研究院

附属エネル

Development of Efficient Oxygen Storage Materials and Hydrogen Permeation

ギー・マテリアル融合領域研究センター

Barrier Materials

横浜国立大学大学院工学研究院

Improvement and application of all-electron mixed basis program

Yuji Kunisada

Materials, Faculty of Engineering, Hokkaido
University

Kaoru Ohno

Graduate School of Engineering, Yokohama
National University
33 2022-Ca-0107

原子層・トポロジカル物質の熱電性の第一原理計
石井 史之First-principles calculation of thermoelectric properties in atomic-layer and
金沢大学ナノマテリアル研究所

算34 2022-Cb-0020

フラッシュメモリ応用を目指したSi-richアモルファ

Fumiyuki Ishii

白石 賢二

名古屋大学

未来材料・システム研究所

First Principles Studies on Si-rich a-SiN for Flash Memory Application

Kenji Shiraishi

スSiNの第一原理計算による研究
35 2022-Cb-0024

密度汎関数理論を用いた金属表面上における分子36 2022-Ca-0008

濱田 幾太郎大阪大学大学院工学研究科

物理学系専攻密工学コース
島村 孝平

第一原理による特異原子構造探索

幾原 雄一

精 Density functional theory study of adsorption and reaction of molecules on metal

Ikutaro Hamada

surfaces

熊本大学大学院先端科学研究部

複雑系に対する熱伝導度計算
37 2022-Ca-0120

Institute of Materials and Systems for Sustainability,
Nagoya University

吸着と反応の研究
人工ニューラルネットワーク力場を用いた多成分

Kanazawa University

topological materials

東京大学大学院工学系研究科総合研究機構

Department of Precision Engineering, Graduate
School of Engineering, Osaka University

Thermal Conductivity calculation with ANN potential for multi-component

Kohei

Faculty of Advanced Science and Technology,

heterogeneous materials

Shimamura

Kumamoto University

Exploring singular atomic arrangements via first-principles calculations

Yuichi Ikuhara

Institute of Engineering Innovation, University ofTokyo

粒界−転位相互作用の微視的機構の解明に向けた
38 2022-Ca-0005

高精度な機械学習型原子間ポテンシャルと大規模分子シミュレーション法の確立

High-accuracy machine-learning interactomic potential and massively large-scale
横井 達矢

名古屋大学大学院工学研究科

物質科学専攻molecular simulation for miscroscopic mechanisms of grain-boundary-dislocationinteractions

Tatsuya Yokoi

Department of Materials Physics, Nagoya University

39 2022-Ca-0054

金属酸化物のプラズマ耐性に関する研究

浜口 智志

大阪大学工学研究科

Study on plasma resistance of metal oxides

Satoshi

Graduate School of Engineering, Osaka University

Hamaguchi
40 2022-Ca-0061

結晶構造探索手法の開発と物質探索

山下 智樹

長岡技術科学大学

Development of crystal structure prediction method and material search

Tomoki

Nagaoka University of Technology

Yamashita
41 2022-Ca-0115

42 2022-Ca-0010

モット絶縁体のキャリアドーピングの第一原理計

レービガー ハン 横浜国立大学

算

ネス

コース

LIAO YUXUAN

東京大学耭械工学専攻

準フォノニック結晶によるナノ熱輸送の究極の抑

大学院工学研究院

物理工学

First Principles calculation of carrier doping in Mott Insulators

HannesDepertment Physics, Yokohama National University

Raebiger
Ultimate Suppression of Nanoheat Transport with Quasi-phononic Crystal

YUXUAN LIAO

制

Department of Mechanical Engineering, theUniversity of Tokyo

Yoshifumi
43 2022-Ca-0047

熱活性化遅延蛍光分子の光学特性調査

野口 良史

静岡大学工学部

Investigation on optical properties of TADF molecules

Graduate School of Engineering, Shizuoka University
Noguchi

磁性元素を含む材料表面・界面ナノ構造に関する
44 2022-Ca-0016

立津 慶幸

Yasutomi

with magnetic elements

Tatetsu

Meio University

高機能スピントロニクス磁性材料の電子・磁気構
45 2022-Cb-0018

Ab-initio research on nano structures of materials' surfaces and grain boundaries
名桜大学

第一原理的研究

Analyses on electronic and magnetic structure and parallelization development in小田 竜樹

金沢大学理工研究域数物科学系

Faculty of Mathematics and Physics, Institute of
Tatsuki Oda

造解析および準粒子自己無撞着GW法の並列化開発

quasi-particle self-consistent GW code

Science and Engineering, Kanazawa University

機械学習ベースの熱機能材料用に最適化されたポ46 2022-Cb-0047

Department of Mechanical Engineering, The許斌

東京大学大学院機械工学専攻

Machine learning based optimized polymer for thermal function materials

Xu Bin

リマー

University of Tokyo

ナノグラフェン・デバイスにおける量子効果の理
47 2022-Ca-0088

草部 浩一

兵庫県立大学大学院理学研究科

松下 雄一郎

東京工業大学

Theoretical study of quantum effects in nanographene devices

Koichi Kusakabe Graduate School of Science, University of Hyogo

Proposal for Green Devices Based on First-Principles Calculations: From Material

Yu-ichiro

Exploration to Device Fabrication

Matsushita

論的研究
48 2022-Eb-0005

第一原理計算に立脚したグリーンデバイスの提案：材料探索からデバイス作製まで
49 2022-Ca-0078

密度汎関数法と溶液理論を用いた電気化学反応の春山 潤Electrochemical reaction analysis using density functional calculation + implicit
東京大学物性研究所

解析 4
50 2022-Ca-0086

密度汎関数理論を用いた分子・金属界面の研究

Jun Haruyama
solvation model 4

濱田 幾太郎大阪大学大学院工学研究科

物理学系専攻精Density functional theory study of molecule/metal interfaces

51 2022-Ca-0026

Institute for Solid State Physics, The University ofTokyo
Ikutaro Hamada

密工学コース
新規蓄電デバイス材料の構造・電子状態に関するTokyo Institute of Technology

Department of Precision Engineering, Graduate
School of Engineering, Osaka University

山田 淳夫

東京大学工学系研究科

Theoretical Analysis on Structure/Electronic State of Novel Energy Storage Materials Atsuo Yamada

邵成

東京大学機械工学塩見研究室

Machine-learning optimization of ionic liquids for energy storage application

Faculty of Engineering, The University of Tokyo

理論的解析
52 2022-Ca-0118

エネルギー貯蔵用途のためのイオン液体の機械学
Cheng Shao

習最適化
53 2021-D-0008

54 2022-Ca-0058

55 2022-Ca-0063

π電子−プロトン相関型分子性導体群の圧力下構of Tokyo
出倉 駿

Systematic elucidation of structure and electronic state of $\pi$-electron-proton

東北大学多元物質科学研究所

造及び電子状態の系統的予測

coupled molecular conductors under pressure

遷移電流密度を用いた非線形光学応答の第一原理

First-principles analysis for nonlinear optical responses based on the transition

佐藤 駿丞

筑波大学計算科学研究センター

Shun Dekura

Shunsuke Sato

current density

新奇トポロジカル物質の第一原理設計および異常First-principles design of novel topological materials and evaluation of anomalous

Kunihiko

Hall conductivity

Yamauchi

山内 邦彦

大阪大学工学研究科

グラフェン層数に依存する水/グラフェン界面構造

大戸 達彦

First-principles study on the structure of water/graphene interfaces depending on

名古屋大学大学院工学研究科の理論研究

Institute of Multidisciplinary Research for Advanced
Materials, Tohoku University

的解析

ホール伝導度の評価
56 2022-Ca-0004

Shiomi Lab, Mechanical engineering, The University

Center for Computational Sciences, University ofTsukuba

Tatsuhiko Ohto

Graduate School of Engineering Osaka University

Graduate School of Engineering, Nagoya University

the number of graphene layers
Center for Advanced Research of Energy and

57 2022-Ca-0019

高効率な酸素吸蔵材料と水素遮蔽材料の探索

國貞 雄治

北海道大学大学院工学研究院

附属エネル

ギー・マテリアル融合領域研究センター

Development of Efficient Oxygen Storage Materials and Hydrogen Permeation
Barrier Materials

Yuji Kunisada

Materials, Faculty of Engineering, Hokkaido
University

58 2022-Ca-0029

第一原理計算による有限温度下での電子--フォノン

柳澤 将

琉球大学理学部物質地球科学科物理系

結合を考慮したバンド計算
59 2022-Ca-0108

金属酸化物ナノクラスターの構造物性に関する理First-principles band structure calculation with the electron-phonon coupling at

SusumuDepartment of Physics and Earth Sciences, Faculty

finite temperature

Yanagisawaof Science, University of the Ryukyus
WPI-AIMR, Tohoku University

横哲

東北大学材料科学高等研究所

Theoretical study for structure and property of metal oxide nanoclusters

Akira Yoko

大西 正人

東京大学機械工学専攻

Development of Thermal Materials Using Phonon Database

Masato Ohnishi

論計算
60 2022-Cb-0036

フォノンデータベースを利用した熱機能材料の開発

Department of Mechanical Engineering, The
University of Tokyo
Center for Advanced Research of Energy and

61 2022-Ca-0018

燃料電池電極触媒とギ酸分解触媒の省貴金属化

坂口 紀史

北海道大学大学院工学研究院

附属エネル

Reduction of Rare Metals in Fuel Cell and Formic Acid Decomposition Catalysts

ギー・マテリアル融合領域研究センター
機械学習を用いた環境発電用ポリマーエレクト
62 2022-Ca-0070

Sakaguchi
Development of Polymer Electret Materials for Energy Harvesting Using Machine

鈴木 雄二

東京大学大学院工学系研究科機械工学専攻

レット材料の開発
武次 徹也

北海道大学大学院理学研究院化学部門

64 2022-Ca-0062

石橋 章司

産業技術総合研究所

中山 哲

67 2022-Ca-0090

第一原理計算による光熱変換原理の解明
フォノンデータベースを利用した熱機能材料の開Department of Chemistry, Faculty of Science,

Taketsugu

Hokkaido University
National Institute of Advanced Industrial Science

Shoji Ishibashi
and Technology

東京大学大学院工学系研究科化学システム工学

機能解明
66 2022-Ca-0011

Tokyo
Tetsuyaprinciples calculation

第一原理分子動力学法を用いた固体酸化物触媒の65 2022-Ca-0125

Dept. of Mechanical Engineering, The University ofPrediction of properties of organic ferroelectrics and piezoelectrics by first-

予測

Department of Chemical System Engineering, The
First-principles molecular dynamics study for metal-oxide catalysis

Akira Nakayama

専攻

University of Tokyo

江目 宏樹

山形大学

Study of the principle of photothermal conversion by ab initio calculations

Hiroki Gonome

大西 正人

東京大学機械工学専攻

Development of Thermal Materials Using Phonon Database

Masato Ohnishi

発
68 2022-Ca-0014

高機能スピントロニクス磁性材料の電子・磁気構

70 2021-D-0006

第一原理計算による光熱変換原理の解明
第一原理計算による銀(111)表面上ヘリセン吸着構

小田 竜樹

金沢大学理工研究域数物科学系

Analyses on electronic and magnetic structure and parallelization development in
Tatsuki Oda
quasi-particle self-consistent GW code

71 2022-Ca-0084

山形大学

Study of the principle of photothermal conversion by ab initio calculations

Hiroki Gonome

濱本 雄治

大阪大学 大学院工学研究科 物理学系専攻

First principles study of the adsorption structure of helicene on the Ag(111) surface

Yuji Hamamoto

72 2022-Cb-0048

73 2022-Ca-0119

篠原 康

鈴木 雄二

Photon Science Center, School of Engineering, theター

Shinohara

University of Tokyo

laser field

東京大学大学院工学系研究科機械工学専攻

Development of Polymer Electret Materials for Energy Harvesting Using Machine
Learning

ガウス過程回帰による銀(111)表面上シリセン安定

Global search for metastable structures of silicene on the Ag(111) surface by濱本 雄治

大阪大学 大学院工学研究科 物理学系専攻

76 2022-Ca-0089

触媒表面基準RuTi合金触媒のメカニズム解明
第一原理計算による白金ナノ粒子の酸化・硫化のYuji Suzuki

中村 和磨

九州工業大学

Ab initio calculations for structural stability and property of multilayer system

Yuji Hamamoto

メータの第一原理計算

Kyushu Institute of Technology
Nakamura

BUI VANPHO

大阪大学大学院工学研究科

Study on the catalytic mechanism of RuTi alloy in catalyst referred etching method

VANPHO BUI

佐々木 岳彦東京大学

Study on oxidation and sulfurization of platinum nanoparticles

Takehiko Sasaki

大学院新領域創成科学研究科

Graduate School of Engineering, Osaka University
Graduate School of Frontier Sciences, The Universityof Tokyo

非従来型分子性導体Cat-TTF類縁体におけるπ電子−プロトン相関物性の解明に向けた電子相関パラ

Department of Precision Engineering, Osaka
University

Kazuma

研究77 2022-Cb-0045

Dept. of Mechanical Engineering, The University ofTokyo

Gaussian process regression

評価
75 2022-Ca-0007

Department of Precision Engineering, Osaka

Yasushi

構造の大域的探索
74 2022-Cb-0052

Yamagata University

東京大学工学系研究科附属光量子科学研究セン First-principles simulations for optical absorption of dielectrics under multi-color

レット材料の開発

第一原理計算に基づく多層膜の安定性および物性

Faculty of Mathematics and Physics, Institute of

University

ミュレーション
機械学習を用いた環境発電用ポリマーエレクト

Department of Mechanical Engineering, The

Science and Engineering, Kanazawa University

江目 宏樹

造の数値的研究
多色レーザー場による誘電体光吸収の第一原理シ

Yamagata University

University of Tokyo造解析および準粒子自己無撞着GW法の並列化開発
69 2022-Cb-0008

University

Ab initio study on the structure and functions of nanomaterialsと予測第一原理計算による有機強誘電体・圧電体の物性

Materials, Faculty of Engineering, Hokkaido

Yuji Suzuki
Learning

第一原理計算によるナノ物質の構造・機能の解明
63 2022-Ca-0094

NorihitoFirst-principles calculations of electron correlation parameters to elucidate $\pi$出倉 駿

東北大学多元物質科学研究所

electron-proton coupled physical properties of the unconventional molecular
conductors Cat-TTF analogues

Shun DekuraInstitute of Multidisciplinary Research for Advanced
Materials, Tohoku University

78 2022-Ca-0124

2次元金属有機構造体および層状半導体の吸着状態

首藤 健一

横浜国立大学・工学部と超高速動力学79 2022-Ca-0066

電子状態計算による触媒における電荷移動反応メ

81 2022-Ca-0053

金属間化合物の表面原子構造と化学的特性に関す

城塚 達也

茨城大学

野澤 和生

鹿児島大学理学部物理科学科

Analyzing Reaction Mechanism of Charge Transfer in Catalysis by Electronic

Tatsuya

Structure Calcutions

JoutsukaFirst-principles study of surface atomic structure and chemical properties ofる第一原理計算intermetallic compounds

第一原理計算を活用した分子性結晶におけるプロ

Elucidation of the mechanism of fast proton conduction based on proton

出倉 駿

東北大学多元物質科学研究所

トン互変異性に基づく高速プロトン伝導機構解明
82 2022-Ca-0020

照射損傷と格子間原子との相互作用の研究

Ken-ichi Shudo

Yokohama Nat'l Univ.

semiconductors

カニズムの解析80 2022-Cb-0042

Ultrafast adsorption states of two-dimensional metal-organic-frameworks andKazuki Nozawa

九州大学応用力学研究所

Department of Physics and Astronomy, Kagoshima
University

Shun Dekura

tautomerism in molecular crystals by using first-principles calculations
大澤 一人

Ibaraki University

Institute of Multidisciplinary Research for Advanced
Materials, Tohoku University

Kazuhito

Research Institute for Applied Mechanics, Kyushu

OhsawaUniversity

Study of interaction between radiation damage and interstitial atom
Yosuke83 2022-Ca-0021

不純物半導体の金属絶縁体転移のexponent puzzle 原嶋 庸介

奈良先端科学技術大学院大学

Exponent puzzle for metal-insulator transition in doped semiconductors

Nara Institute of Science and Technology
Harashima

84 2022-Ca-0048
85 2022-Ca-0077

固体表面界面における構造的素励起の研究
電磁場と物質の相互作用の第一原理計算手法開発

影島 博之
加藤 洋生

島根大学大学院自然科学研究科
東京大学光量子科学研究センター

分子吸着表面上における波数空間分解光電子分光
86 2022-Ca-0116

二木 かおり鉄系材料表面におけるアンモニア分解反応機構のGraduate School of Natural Science and Technology,

Kageshima
Development of First Principles methods for Light-Matter Interaction

Shimane University

Hiroki Katow

Photon Science Center, the University of Tokyo

Kaori Niki

Chiba University

Analysis of wavenumber space-resolved photoelectron spectrum of molecules
千葉大学

スペクトルの解析
87 2022-Cb-0025

Hiroyuki
Study on structural elementary excitations at solid surfaces and interfaces

adsorbed on surface
李 敏赫

東京大学大学院工学系研究科機械工学専攻

Modeling of the Ammonia Decomposition Reaction on Iron-based Material Surfaces Minhyeok Lee

モデル化
88 2022-Ba-0046

第一原理LCPAO法を用いた大規模系におけるベUniversity of Tokyo
山口 直也

金沢大学ナノマテリアル研究所

リー位相を介した物性の効率的な評価手法の開発
89 2022-Ca-0113

90 2022-Cb-0026

光触媒Ba$̲{2}$PrBiO$̲{6}$の表面電子構造の研究 西館 数芽
ガウス過程回帰による銀(111)表面上シリセン安定
濱本 雄治

岩手大学理工学部

大阪大学 大学院工学研究科 物理学系専攻

構造の大域的探索
91 2022-D-0002

高熱伝導絶縁物質のための熱伝導率計算：第一原

Department of Mechanical Engineering, The

Development of Efficient Evaluation Methods of Berry-phase-mediated Physical

Naoya

Nanomaterials Research Institute, Kanazawa

Properties for Large Scale Systems Using the First-principles LCPAO Method

Yamaguchi

University

KazumeFaculty of Science and Engineering, IWATE

Nishidate

University

Electronic structure investigation of the Ba$̲{2}$PrBiO$̲{6}$ photocatalyst
Global search for metastable structures of silicene on the Ag(111) surface by

Yuji Hamamoto
Gaussian process regression

河野 翔也

九州工業大学

Thermal conductivity calculation for high thermal conductive insulator

Department of Precision Engineering, Osaka
University
Shoya Kawano

Kyushu Institute of Technology

理計算
92 2022-Bb-0001

93 2022-Ba-0015

第一原理量子輸送と深層学習を連携させ、仮想実

ビュクール マリ

験環境を構築ウス

新たなナノスケール表面界面の電子物性に関する小林 功佳

国立研究開発法人産業技術総合研究所

Combining first-principles quantum transport and deep learning to create a virtualMarius Buerkle
experimental environment
お茶の水女子大学理学部物理学科

Theoretical study on electronic properties of new nanoscale surfaces and interfaces

理論的研究
94 2022-Bb-0023

遷移金属炭窒化物の新規相探索大久保 將史早稲田大学

Exploration of transition-metal carbides and nitrides

95 2022-Ca-0064

ナノカーボン系物質の原子構造・電子物性の解明

藤本 義隆

九州大学工学研究院

Atomic structures and electronic properties of nanocarbon-based materials

National Institute of Advanced Industrial Scienceand Technology
Katsuyoshi

Department of Physics, Faculty of Science,

Kobayashi

Ochanomizu University

Masashi Okubo Waseda University
Yoshitaka

Faculty of Engineering, Kyushu University

Fujimoto
96 2022-D-0006

ハイエントロピー合金と形状記憶合金の相平衡

御手洗 容子東京大学新領域創成科学研究科

Phase equilibrium of high entropy alloys and shape memory alloys

Yoko Mitarai

97 2022-Ba-0008

表面合金データベース小野 頌太

東北大学金属材料研究所

Surface Alloy Database

Shota Ono

Graduate School of Frontier Sciences, The Universityof Tokyo

98 2022-Ba-0016

末端官能基を制御した層状遷移金属炭化物MXeneの電荷貯蔵機構

大久保 將史早稲田大学

Charge storage mechanism of layered transition metal carbides with regulated
terminal groups

Tohoku University

Masashi Okubo Waseda University

99 2022-Ba-0067

RSDFT計算による非接触原子間力顕微鏡で捉えた

新井 豊子

RSDFT calculation of the force acting between a tip and a sample detected by

金沢大学

探針試料間に働く力の解析
100 2022-Bb-0011

ハイエントロピー合金の相安定性と力学特性

Toyoko Arai

Kanazawa University

noncontact atomic force microscope
御手洗 容子東京大学新領域創成科学研究科

Phase stability and mechanical properties of high-entropy alloys

Yoko Mitarai

Graduate School of Frontier Sciences, The Universityof Tokyo

Clarification of atomistic mechanism application of process design for adhesion
101 2022-Bb-0015

第一原理計算を用いた金属とプラズマ処理した

大久保 雄司大阪大学大学院工学研究科

interface between metal and plasma-treated fluoropolymers using first principles

Yuji Ohkubo

Graduate School of Engineering, Osaka University

フッ素樹脂界面の接着メカニズムの解明
calculation
しわ構造を持つグラフェンナノリボンの電子状態
102 2022-Bb-0009

有馬 健太

大阪大学 大学院 工学研究科

Calculation of electronic structures of graphene nanoribbons with wrinkles

Kenta Arima

Graduate School of Engineering, Osaka University
Department of Physics, Ritsumeikan University

計算
103 2022-Ba-0032

量子液晶の第一原理計算

池田 浩章

立命館大学理工学部物理科学科

first principles calculations in quantum liquid crystals

Hiroaki Ikeda

104 2022-Ba-0035

ハイエントロピー合金の相変態

御手洗 容子東京大学新領域創成科学研究科

Phase transformation of high-entropy alloys

Yoko Mitarai

Graduate School of Frontier Sciences, The Universityof Tokyo
ダイヤモンド表面のグラファイト化とその剥離プ
105 2022-Ba-0058

First-principles calculation of graphitization of diamond surface and its exfoliation
稲垣 耕司

大阪大学大学院工学研究科

ロセスの第一原理計算

Kouji Inagaki

狭いバンドギャップを持つ有機電荷移動錯体半導106 2022-Ba-0061

Graduate Scool of Engineering, Osaka University

process
Toshihiro
島田 敏宏

北海道大学

大学院工学研究院

Computational search for narrow bandgap organic charge transfer complex

体の計算機による探索

Faculty of Engineering, Hokkaido University
ShimadaInstitute of Science and Engineering, Kanazawa

107 2022-Bb-0018

異方的結晶構造を有する磁性材料の解析

小幡 正雄

金沢大学理工研究域

Analysis of magnetic materials with anisotropic crystal structures

Masao Obata
University

108 2022-Ba-0039

109 2022-Ba-0040

Pb系トポロジカル絶縁体のバルク絶縁性向上を目
徳本 有紀

東京大学生産技術研究所

指したドーパント探索

insulators

絶縁体的基底状態を有する希土類酸化物の振動・

Ab-inition calculations for vibrational and magnetic properties of rare-earth
牧野 哲征

福井大学遠赤外領域開発研究センター

磁気特性に関する第一原理計算
110 2022-Ba-0028

Exploring dopants aiming at achieving high bulk insulation in Pb-based topological

異方的結晶構造を持つ磁性体の解析

Yuki Tokumoto
Tokyo
Takayuki Makino
monooxides with insulating ground states

小幡 正雄

金沢大学理工研究域

Analysis of magnetic material with an anisotropic crystal structure

Institute of Industrial Science, The University of

Research Center for Development of Far-Infrared
Region, University of Fukui
Masao Obata

Institute of Science and Engineering, Kanazawa
University
111 2022-Ba-0042

d電子系およびｄ電子系化合物の電子構造とフェル眞榮平 孝裕琉球大学

理学部

Electronic Structure and Fermiology of d- and f-electron compounds

ミオロジー
112 2022-Ba-0002

触媒インフォマティクスに向けた複雑酸化物の表

113 2022-Ba-0026

Faculty of Science, University of the Ryukyus
Maehira

日沼 洋陽

産業技術総合研究所

面酸素空孔の安定性評価
新奇ボロン系二次元物質BSの電子状態と類縁物質

Takahiro

Evaluating surface oxygen vacancy stablity in complicated oxides for catalyst
Yoyo Hinuma
informatics
豊田 雅之

東京工業大学理学院物理学系

Electronic Structure of Novel 2D Boron Monosulfide and Design of Related Materialsの設計

National Institute of Advanced Industrial Scienceand Technology
Masayuki

Department of Physics, School of Science, Tokyo

ToyodaInstitute of Technology

Yuji Ohkubo

Graduate School of Engineering, Osaka University

Shoya Kawano

Kyushu Institute of Technology

Clarification of atomistic mechanism application of process design for adhesion
114 2022-Ba-0027

第一原理計算を用いた金属とプラズマ処理した

大久保 雄司大阪大学大学院工学研究科

フッ素樹脂界面の接着メカニズムの解明

115 2022-Ba-0056

酸化チタンTiO$̲{2}$表面の酸素欠陥の第一原理計

calculation
河野 翔也

九州工業大学算116 2022-Ca-0030

金属間化合物の表面原子構造と化学的特性に関す第一原理計算に基づく多層膜の安定性評価

First-principles calculation of oxygen defects on the surface of titanium dioxide
TiO$̲{2}$野澤 和生

鹿児島大学理学部物理科学科

る第一原理計算117 2022-Ca-0093

interface between metal and plasma-treated fluoropolymers using first principles

First-principles study of surface atomic structure and chemical properties of
Kazuki Nozawa
intermetallic compounds
中村 和磨

九州工業大学

Ab initio calculations for stability of multilayer sysmte

Department of Physics and Astronomy, Kagoshima
University
KazumaNakamura

Kyushu Institute of Technology

118 2022-Ba-0023

金属表面と磁性金属フタロシアニン分子の相互作

有賀 哲也

京都大学理学研究科化学専攻

稲岡 毅

琉球大学理学部

Interaction of magnetic metal phthalocyanines with metal surfaces

Aruga Tetsuya

Dept. Chem., School of Science, Kyoto University

用
119 2022-Ba-0050

固体表面・界面、ナノ構造体の新規電子物性の探Search and realization of novel electronic properties of surfaces and interfaces and

索と実現
120 2022-Bb-0006
121 2022-Ba-0001

共役π電子系分子の面内相互作用
金属表面上における有機ハロゲン分子およびその

有賀 哲也
塚原 規志

京都大学理学研究科化学専攻
群馬工業高等専門学校

反応生成物に関するDFT計算
122 2022-Bb-0012

グラフェン基板上の2D金属の安定構造

小野 頌太

光起電力応用ナノクリスタルの第一原理計算によビュクール マリる研究

ウス

第一原理計算によるメタン変換触媒の理論的研究

辻 雄太

123 2022-A-0001
124 2022-A-0002

Takeshi Inaoka

of nanostructures
In-plane interaction of conjugated molecules

Department of Physics and Earth Sciences, Facultyof Science, University of the Ryukyus

Aruga Tetsuya

DFT calculations of organic halogen molecules and their reaction products on metal Noriyuki
surfaces

Tsukahara

東北大学金属材料研究所

Stable structure of 2D metals on graphene substrate

Shota Ono

国立研究開発法人産業技術総合研究所

First-principles computational study of nanocrystals for photovoltaic applications

Marius Buerkle

九州大学総合理工学研究院

Theoretical study of methane conversion catalysts by first-principles calculations

Yuta Tsuji

Dept. Chem., School of Science, Kyoto University
National Institute for Technology, Gunma College
Tohoku University
National Institute of Advanced Industrial Scienceand Technology
Faculty of Engineering Sciences, Kyushu University

Nayuta125 2022-A-0006

ハイパーマテリアルのバンド計算

竹森 那由多大阪大学

Band calculation of hypermaterials

Osaka University
Takemori

固体中・表面上でのジラジカル状態に関する理論
126 2022-A-0008

National Institute of Advanced Industrial Science
多田 幸平

国立研究開発法人

産業技術総合研究所

Theoretical study for diradicals in solids and on surfaces

Kohei Tada

研究

and Technology (AIST)Osamu

127 2022-A-0014

水和イオン液体の電子状態

高橋 修

広島大学大学院理学研究科

Electronic structure of aqueous ionic liquids

Graduate School of Science, Hiroshima University
Takahashi

128 2022-A-0024

量子化学計算によるポリマー設計

山本 小夜子

九州大学

Polymer Design by Quantum Chemical Calculation

SayokoKyushu University
Yamamoto

2. 強相関 / Strongly Correlated Quantum Systems
No.

課題番号
1 2022-Eb-0001

2 2022-Ea-0004

課題名

Title

Name

Organization

Systematic ab initio studies on high temperature superconductivity of transition

Masatoshi

Research Institute for Science and Engineering,計算

metal oxides

Imada

Waseda University

長距離クーロン相互作用が導くキタエフ量子スピ

Phase competition induced by long-range Coulomb interactions in candidate

Youhei Yamaji

National Institute for Materials Science

遷移金属酸化物高温超伝導物質の網羅的第一原理

氏名
今田 正俊

山地 洋平

所属
早稲田大学理工学術院

物質・材料研究機構

ン液体候補における相競合
3 2022-Ea-0006

4 2022-Cb-0013

5 2022-Ca-0056

6 2022-Ca-0098

分光実験データと高精度大規模数値計算を組み合

materials of Kitaev's quantum spin liquid
Integrated spectroscopic studies by combining experimental data and highMasatoshi

Research Institute for Science and Engineering,

わせた強相関電子系のための統合分光研究

precision large-scale computation for strongly correlated electrons

Imada

Waseda University

第一原理計算と機械学習を援用した強相関トポロ

Theoretical study of strongly-correlated topological phenomena by exploiting first-

Yukitoshi

Department of Applied Physics, The University of

ジカル物性の理論研究

principles calculations and machine learning

MotomeTokyo

第一原理計算と機械学習を援用した強相関トポロ

Theoretical study of strongly-correlated topological phenomena by exploiting first-

Yukitoshi

Department of Applied Physics, The University of

ジカル物性の理論研究

principles calculations and machine learning

MotomeTokyo

擬一次元的電子状態を有する銅酸化物超伝導体のTheoretical studies on cuprate superconductors with quasi-one-dimensional

Kazuhiko Kuroki

Osaka University

Yusuke Nomura

Keio University

今田 正俊

求 幸年

求 幸年

黒木 和彦

早稲田大学理工学術院

東京大学大学院工学系研究科

東京大学大学院工学系研究科

大阪大学

理論研究
7 2022-Ca-0068
8 2022-Ca-0082

多軌道強相関物質における非局所電子相関の研究
強相関電子系における動的感受率の第一原理計算

electronic structure
野村 悠祐
品岡 寛

慶應義塾大学
埼玉大学理学部物理学科

Study on nonlocal correlations in multi-orbital strongly-correlated materials
First-principles calculations of dynamical susceptibilities for strongly correlated

Hiroshi Shinaoka Department of Physics, Saitama University

materials
9 2022-Ca-0015

光励起された一次元モット絶縁体の過渡吸収スペ
クトル

遠山 貴己

東京理科大学理学部応用物理学科

Transient absorption spectrum in photo-excited one-dimensional Mott insulator

Takami

Department of Applied Physics, Tokyo University of

TohyamaScience10 2022-Ca-0071

ホルミウムイオンに創出する3チャンネル近藤効果

堀田 貴嗣

東京都立大学理学研究科物理学専攻

Research of Three-Channel Kondo Effect Emerging from Holmium Ions

Takashi Hottaの研究
11 2022-Ca-0012

トポロジカル磁性における光誘起現象の開拓

Department of Physics, Graduate School of Science,
Tokyo Metropolitan University

望月 維人

早稲田大学先進理工学部応用物理学科

Research for photoinduced phenomena in topological magnets

Masahito

Waseda university

Mochizuki
12 2022-Cb-0014

磁性金属における光誘起トポロジカル電子状態の望月 維人

早稲田大学先進理工学部応用物理学科

Research on photoinduced topological electronic states in metallic magnets

探索
13 2022-Ca-0045

近藤格子における強相関現象

Masahito

Waseda university

Mochizuki
ピータース ロ

京都大学

Correlation induced phenomena in Kondo lattice systems

Robert Peters

Kyoto University

バート
14 2022-Ca-0034

EDXTオリゴマー電荷移動塩の電子構造解析：分子藤野 智子

東京大学物性研究所

内・分子間クーロン反発エネルギーの算出
15 2022-Ba-0009

有機ディラック電子系における秩序状態の系統的Electronic structures of EDXT oligomers in charge transfer salts: estimation of

Tomoko Fujino

intramolecular and intermolecular Coulomb repulsion energy
小林 晃人

名古屋大学

渡部 洋

立命館大学

大学院理学研究科

Institute for Solid State Physics, The University ofTokyo

Systematic elucidation of ordered states in organic Dirac electron systems

Akito Kobayashi Graduate School of Science, Nagoya University

Unified description of cuprate high-temperature superconductors using multiband

HiroshimodelsWatanabe解明
16 2022-Ba-0021

多バンド模型を用いた銅酸化物高温超伝導体の統一的記述

17 2022-Bb-0017

18 2022-Ba-0055

強相関電子系の電子状態の数値的研究
ホイスラー化合物の熱電性能に関する理論的研

柳沢 孝

西口 和孝

産業技術総合研究所

神戸大学大学院システム情報学研究科

究：弱結合理論か らのアプローチ
19 2022-Ba-0049
20 2022-Ba-0036
21 2022-A-0016

強相関電子系の電子状態の数値的研究
遍歴磁性体における光誘起非平衡ダイナミクス
強磁性ドメイン壁の電流駆動による創発電場の数

柳沢 孝
小野 淳
賀川 史敬

産業技術総合研究所
東北大学大学院理学研究科
東京工業大学

Ritsumeikan University

TakashiNational Institute of Advanced Industrial Science

Yanagisawa

andTechnology

Theoretical study of thermoelectric properties in Heusler compounds: A weak-

Kazutaka

Graduate School of System Informatics, Kobe

coupling approach

Nishiguchi

University

TakashiNational Institute of Advanced Industrial Science

Yanagisawa

andTechnology

Atsushi Ono

Department of Physics, Tohoku University

Numerical study of electronic states of strongly correlated electron systems

Numerical study of electronic states in strongly correlated electron systems
Photoinduced nonequilibrium dynamics in itinerant magnets
Emergent Electric Field induced by current-driven ferromagnetic domain walls

値計算

Fumitaka

Tokyo Institute of Technology

Kagawa3. 巨視系の協同現象 / Cooperative Phenomena in Complex, Macroscopic Systems
No.

課題番号
1 2022-Eb-0002

課題名
古典・量子統計力学モデルにおけるループ気体表

氏名
川島 直輝

所属
東京大学物性研究所

現とテンソルネットワーク計算
2 2022-Ea-0001

3 2022-Ea-0009

全原子及び粗視化モデルによるソフトマターの大篠田 渉

岡山大学異分野基礎科学研究所

Naoki

and its tensor-network calculation

Kawashima

Large-scale Molecular Simulation of Soft Materials using All-Atom and Coarse-

Wataru Shinoda

Grained Model

古典・量子統計力学モデルにおけるループ気体表

Loop-gas representation of classical and quantum statistical-mechanical models

Naoki

and its tensor-network calculation

Kawashima

川島 直輝

東京大学物性研究所

全原子及び粗視化モデルによるソフトマターの大篠田 渉

岡山大学異分野基礎科学研究所

規模分子シミュレーション
5 2022-Ca-0069

Name

Loop-gas representation of classical and quantum statistical-mechanical models

規模分子シミュレーション

現とテンソルネットワーク計算
4 2022-Eb-0003

Title

テンソルネットワークとサンプリングによる量子

Large-scale Molecular Simulation of Soft Materials using All-Atom and Coarse-

Organization
Institute for Solid State Physics, University of Tokyo
Okayama University, Research Institute forInterdisciplinary Science

Wataru Shinoda

Grained Model

Institute for Solid State Physics, University of Tokyo
Okayama University, Research Institute forInterdisciplinary Science藤堂 眞治

東京大学大学院理学系研究科物理学専攻

Simulation of quantum many-body systems by tensor network and sampling

Synge Todo

Department of Physics, University of Tokyo

野口 博司

東京大学物性研究所

structure formation of biomembrane

Hiroshi Noguchi

Institute for Solid State Physics, University of Tokyo

Novel phenomena in frustrated magnets

Tsuyoshi Okubo

多体系のシミュレーション
6 2022-Ca-0039
7 2022-Ca-0052

生体膜の構造形成
フラストレート磁性体の新規物性解明大久保 毅

東京大学大学院理学系研究科知の物理学研究センター

Institute for Physics of Intelligence, The University ofTokyo8 2022-Cb-0050

分子動力学法を用いた界面構造の動的性質の解析

渡辺 宙志

慶応義塾大学理工学部

Molecular dynamics study of dynamic properties of interface structure

HiroshiFaculty of Science and Technology Keio University

Watanabe
9 2022-Ca-0067

J1-J2フラストレートイジング模型の非平衡緩和解渡辺 宙志

慶応義塾大学理工学部

Non-equilibrium relaxation analysis on J1-J2 frustrated Ising model析
10 2022-Ca-0085

相転移を伴う複雑流体のマルチスケール流動シ

HiroshiFaculty of Science and Technology, Keio University

Watanabe
川勝 年洋

東北大学大学院理学研究科物理学専攻

Multiscale Flow Simulations on Complex Fluids Undergoing Phase Transition

ミュレーション

Toshihiro

epartment of Physics, Faculty of Science, Tohoku

Kawakatsu

University

Satoru Hayami

Department of Physics, Hokkaido University

フラストレート磁性体における磁気スキルミオン
11 2022-Ca-0002

を探索するための機械学習を併用した数値シミュ

速水 賢

北海道大学大学院理学研究院

skyrmion in frustrated magnets

レーション
マルチスケールシミュレーションによる荷電リン
12 2022-Ca-0106

Numerical simulations combined with machine learning to search for magnetic

Correlation between the structure of charged phospholipid bilayer membrane and樋口 祐次

九州大学情報基盤研究開発センター

脂質二重膜とイオン分布の相関

Research Institute for Information Technology,
Yuji Higuchi

ion distribution by multi-scale simulation

Kyushu University
Faculty of Science and Technology, Sophia

13 2022-Ca-0003

非エルミートランダム系の局在・非局在転移

大槻 東巳

上智大学理工学部

Localization-delocalization transition in non-Hermitian random system

Tomi Ohtsuki
University

相転移点近傍におけるスピンダイナミクスの大規
14 2022-Ca-0100

諏訪 秀麿

東京大学大学院理学系研究科物理学専攻

Large-scale simulation of spin dynamics in the vicinity of a phase transition point

Hidemaro Suwa Department of Physics, The University of Tokyo

吉本 勇太

東京大学 大学院工学系研究科 機械工学専攻

Constructing a dataset of thermal and dielectric properties of fluoropolymers

Yuta Yoshimoto

坂井 徹

兵庫県立大学大学院理学研究科

Magnetization Plateau with Spontaneous Symmetry Breaking

Toru Sakai

模計算
フッ素樹脂の熱的・誘電特性に関するデータセッ
15 2022-Cb-0012

Department of Mechanical Engineering, The

トの構築
16 2022-Cb-0034
17 2022-Cb-0049

自発的対称性の破れを伴う磁化プラトー
荷電リン脂質二重膜と水分子の構造とダイナミク

University of Tokyo

樋口 祐次

九州大学情報基盤研究開発センター

ス
18 2022-Ca-0105

伸長流動下の高分子ダイナミクス

Structure and dynamics of charged phospholipid bilayer membrane and water
Yuji Higuchi
molecules
村島 隆浩

東北大学大学院理学研究科

Polymer Dynamics under Elongational Flow

Graduate School of Science, University of Hyogo
Research Institute for Information Technology,
Kyushu University

Takahiro
東北大学大学院理学研究科
Murashima
19 2022-Ca-0025

20 2022-Cb-0017

蛋白質物性に強く関与するソフトモードの効率的北尾 彰朗

東京工業大学生命理工学院
properties

ゆらぎ交換近似を用いた有機電荷移動錯体の超伝

Fluctuation exchange approximation calculations for the superconducting transition
Jeschke Harald

岡山大学異分野基礎科学研究所

導転移温度および超伝導対称性に関する研究
21 2022-Cb-0028

機械学習ポテンシャルを用いた表面・界面・欠陥

広義のトポロジカル相とバルクエッジ対応の科学

渡邉 聡

初貝 安弘

キタエフ量子スピン液体におけるフラックス構造

Institute of Molecular and Cellular
Biosciences,University of Tokyo
Harald Jeschke

Research Institute for Interdisciplinary Science
Okayama University

東京大学大学院工学系研究科マテリアル工学専 Analyses on local properties at complex structures such as surfaces, interfaces andSatoshi

Department of Materials Engineering, School of

攻WatanabeEngineering, The University of Tokyo

defects via machine-learning potentials

筑波大学大学院数理物質科学研究科物理学専攻 Numerical studies for science of bulk-edge correspondence and topological phasesの数値的研究23 2022-Ca-0036

Akio Kitao

temperatures and pairing symmetries of organic charge transfer salts

等の複雑構造における局所物性に関する解析
22 2022-Ca-0060

Efficient sampling simulation of the soft modes significantly contribute to protein

サンプリングシミュレー ション

Yasuhiro

Institute of Physics, University of Tsukuba

Hatsugai古賀 昌久

東京工業大学中野 裕義

東京大学物性研究所

Effects of flux structures on Majorna excitations in Kitaev spin liquids

Akihisa Koga

Tokyo Institute of Technology

Numerical analysis of motility-induced phase transition in active Brownian particle

Hiroyoshi

The Institute for Solid State Physics, The University

systemNakanoof Tokyoのマヨラナ励起への影響
24 2022-Cb-0004

アクティブブラウン粒子系が示すモティリティ誘起相転移の数値的解析

25 2022-Ca-0028

相界面の特異的性質と自由エネルギーの有限サイ

中川 尚子

茨城大学理学部

Nontrivial properties of interface and finite size effects of free energies

ズ効果
26 2022-Ca-0041

分子動力学シミュレーションによる病気関連生体27 2022-Cb-0054
子混合計算シミュレーション

Department of Physics, Ibaraki University

Nakagawa
奥村 久士

自然科学研究機構生命創成探究センター

Hisashi

Exploratory Research Center on Life and Living

Okumura

Systems, Institute for Molecular Science

Simulations of stochastic quantum-classical-hybrid calculations for sensor materials

WataruCenter for Quantum Information and Quantum

with considering noise

Mizukami

Biology

Molecular dynamics simulation of disease-related biomolecules

分子の研究
センサー材料のためのノイズを考慮した確率的量

Naoko

水上 渉

大阪大学 量子情報・量子生命研究センター

28 2022-Cb-0021

結合分子誘起の相分離の分子動力学法による研究

福島 孝治

東京大学大学院総合文化研究科

Molecular dynamics study of phase separation induced by binding molecules

Koji Hukushima

Department of Basic Science, The University ofTokyo

29 2022-Ca-0037

HPCを基盤とした実験解析‧シミュレーション‧

星 健夫

データ駆動科学の融合
30 2022-Ca-0097

ポリマー材料の周波数依存誘電特性に関するデー

鳥取大学大学院工学研究科機械宇宙工学専攻応

摩擦の物理

吉本 勇太

東京大学 大学院工学系研究科 機械工学専攻

Constructing a dataset of frequency-dependent dielectric properties of polymeric

Yuta Yoshimotomaterials
松川 宏

量子多体系における観測誘起相転移とカオス的ダ
32 2022-Ca-0075

Takeo Hoshi

青山学院大学理工学部

Physics of Friction

University of Tokyo
HiroshiFaculty of Science and Engineering, Aoyama Gakuin

Matsukawa

University

手塚 真樹
専攻

body systems

Masaki Tezuka

Department of Physics, Kyoto University

東京大学大学院総合文化研究科

Theoretical design of novel proteins for medical and industrial applications

医療や産業への応用を指向した新規タンパク質のGraduate School of Arts and Sciences, The
新井 宗仁

Munehito Arai

理論的設計
34 2022-Ca-0001

熱伝導系が示す非平衡長距離相関

University of Tokyo
中野 裕義

東京大学物性研究所

分子動力学法を用いた熱硬化性樹脂多成分系にお35 2022-Ca-0046

Department of Mechanical Engineering, The

京都大学大学院理学研究科物理学・宇宙物理学 Measurement-induced phase transition and chaotic dynamics in quantum many-

イナミクス
33 2022-Cb-0003

Department of Applied Mathematics andPhysics,Tottori University

タセットの構築31 2022-Ca-0109

HPC-based fusion of experiment analysis, simulation and data-driven science

用数理工学講座

Hiroyoshi

The Institute for Solid State Physics, The University

Nakanoof Tokyo

Nonequilibrium long-range correlation in heat conduction systems
Molecular dynamics simulation for chemical reactions in multicomponent systems of

大矢 豊大

東京理科大学先進工学部

ける化学反応計算

Fuculty of Advanced Engineering, Tokyo University
Yutaka Oya

thermosetting resinsof Science

量子スピン系の低エネルギー状態に関する数値的
36 2022-Ca-0081

中野 博生

兵庫県立大学大学院理学研究科

尾関 之康

電気通信大学情報理工学研究科

Numerical study on low-energy states of quantum spin systems

Hiroki Nakano

Graduate School of Science, University of Hyogo

研究37 2022-Cb-0023

38 2022-Ca-0042

ガウス過程回帰を用いたゆらぎの緩和による臨界critical exponents

異方的相互作用を持つ蜂の巣格子Kitaev-

Dynamical properties of the extended Kitaev-$\Gamma$ model on a honeycomb
鈴木 隆史

兵庫県立大学

大学院工学研究科$\Gamma$模型の動的性質
39 2022-Ca-0110

疾患に関わるタンパク質間相互作用を阻害する新41 2022-Ca-0057

大規模粒界構造探索と構造に基づく複数物性予測
臨界現象研究のためのスケーリング解析の開発とYukiyasu Ozeki
University of Electro-Communications
Takafumi Suzuki Graduate School of Engineering, University of Hyogo

新井 宗仁

東京大学大学院総合文化研究科

Theoretical design of novel antibodies that inhibit disease-related protein-protein
Munehito Araiinteractions
藤井 進

尾関 之康

大阪大学大学院工学研究科マテリアル生産科学 Systematic searches for grain boundary structures and structure-based prediction of
専攻

multiple properties

電気通信大学情報理工学研究科

Development and applications of scaling analysis for critical phenomena

42 2022-Ca-0083

Graduate School of Arts and Sciences, The
University of Tokyo
Susumu Fujii

Division of Materals and Manufucturing Science,
Graduate School of Engineering, Osaka University
Yukiyasu Ozeki

応用
量子光に誘起された固体中協力現象の初期ダイナ

Department of Applied Physics and Chemistry, The

lattice

規抗体の理論的設計
40 2022-Ca-0035

Gauss process regression applied to relaxation of fluctuation for estimations of

指数評価

Department of Applied Physics and Chemistry, The
University of Electro-Communications
石田 邦夫

宇都宮大学工学部

Initial dynamics of photoinduced cooperativity by quantized light

下川 統久朗沖縄科学技術大学院大学

Thermal effects on the frustrated magnets

Kunio Ishida

School of Engineering, Utsunomiya University

TokuroOkinawa Institute of Science and Technology

Shimokawa

Graduate University

ミクス理論
43 2022-Cb-0022

フラストレートした量子磁性体に対する熱ゆらぎの効果

44 2022-Ca-0023

ハニカム格子スピン系における磁性の数値的研究

安田 千寿

琉球大学理学部

Numerical study of magnetism in the honeycomb-lattice spin systems

Chitoshi Yasuda

Department of Physics and Earth Sciences,
University of the Ryukyus

45 2022-Ca-0101

フラストレートした量子磁性体に対する熱ゆらぎ

下川 統久朗沖縄科学技術大学院大学

Thermal effects on quantum frustrated magnetismsの効果
46 2022-Ca-0099

テンソルくりこみ群によるランダムスピン系の研TokuroOkinawa Institute of Science and Technology

Shimokawa

Graduate University

福島 孝治

東京大学大学院総合文化研究科

Tensor renormalization-group study of random spin systems

Koji Hukushima

坂井 徹

兵庫県立大学大学院理学研究科

Numerical Study on Novel Spin Nematic Phase

Toru Sakai

究
47 2022-Ca-0033

新奇スピンネマティック相の数値的研究

Department of Basic Science, The University ofTokyo
Graduate School of Science, University of Hyogo

48 2022-Ca-0117

49 2022-Ca-0096

センサー材料のためのノイズを考慮した確率的量

Simulations of stochastic quantum-classical-hybrid calculations for sensor materials

WataruCenter for Quantum Information and Quantum

子混合計算シミュレーション

with considering noise

Mizukami

Biology

ランダム位相積状態法とニューラルネットワーク

Finite temperature calculation of quantum manybody system using random phaseToshiaki IITAKA

Riken

水上 渉

飯高 敏晃

大阪大学 量子情報・量子生命研究センター

理化学研究所波動関数を使った量子多体系有限温度計算
50 2022-Cb-0046

51 2022-Ca-0080

product state and neural network wavefunction

Ground state and dynamical properties of the

ゴウケ マティア$J̲1J̲2K$-Heisenberg model on the square latticeス

フラストレート磁性体における新奇秩序

川村 光

沖縄科学技術大学院大学

Ground state and dynamical properties of the $J̲1J̲2K$-Heisenberg model on the

Matthias Gohlke

square lattice
神戸大学分子フォトサイエンス研究センター

Novel order in frustrated magnets

Okinawa Institute of Science and Technology
Graduate University

HikaruMolecular Photoscience Research Center, Kobe

Kawamura

University

Kazuhiro
52 2022-Cb-0007

相転移キネティクスとポリアモルフィズム

渕崎 員弘

愛媛大学理工学研究科

Kinetics of phase transition and polyamorphism

Department of Physics, Ehime University
Fuchizaki

分子動力学法によるペロブスカイト型酸化物粒界
53 2022-Cb-0055

Institute of Engineering Innovation, University of
幾原 雄一

東京大学大学院工学系研究科総合研究機構

Molecular dynamics simulation of grain boundaries in perovskite oxide

Yuichi Ikuhara

の研究

Tokyo

Ground state and dynamical properties of the

ゴウケ マティア$J̲1J̲2K$-Heisenberg model on the square latticeス

54 2022-Ca-0112

Ground state and dynamical properties of the $J̲1J̲2K$-Heisenberg model on the
沖縄科学技術大学院大学

Okinawa Institute of Science and Technology
Matthias Gohlke

square lattice

Graduate University

テンソルネットワークを用いたテンソルデータ解
55 2022-Cb-0041

原田 健自

京都大学大学院情報学研究科

佐藤 龍平

東北大学材料科学高等研究所

Tensor data analysis by tensor network

KENJI HARADA

Graduate school of Informatics, Kyoto University

析
クロソ化合物超イオン伝導体の無秩序化による相56 2022-Ca-0017

the study on super ionic conduction and phase transition by disordering of complex

転移及び輸送機構の解明
57 2022-Ca-0038

相転移キネティクスとポリアモルフィズム

Advanced Institute for Materials Research, Tohoku
Ryuhei Satohydride渕崎 員弘

愛媛大学理工学研究科

Kinetics of phase transition and polyamorphism

University
Kazuhiro
Department of Physics, Ehime University
Fuchizaki

58 2022-Ca-0044

ブロックコポリマーの相分離構造の鎖交差禁止に
萩田 克美

防衛大学校応用科学群応用物理学科

よる効果の検討
59 2022-Ca-0009

材料シミュレーションとインフォマティクスによEffect of chain crossing prohibition on phase-separated structure of block中山 将伸

名古屋工業大学

Unveiling grain boundary alkaline ion conductivity by using materials simulation and

る粒界アルカリイオン伝導機構の解析
60 2022-D-0003

散逸のある超伝導回路素子におけるマイクロ波散テンソルネットワーク法によるKitaev模型のクエ

Sciences, National Defense Academy
Masanobu

山本 剛史

筑波大学

Theory of microwave scattering in a dissipative superconducting circuit element

Tsuyoshi

63 2022-Ba-0029

フラストレート磁性体における新奇秩序
電子間クーロン相互作用を考慮したエリアシュベ

金子 隆威

早稲田大学 理工学術院総合研究所

Tensor-network study of the quench dynamics of the Kitaev model

Ryui Kaneko

65 2022-Bb-0014

荷電patchy粒子系における構造形成
メタダイナミクス法と教師なし機械学習によるア

異方的三角strip模型におけるgapless SPT相

Research Institute for Science and Engineering,
Waseda University
川村 光

神戸大学分子フォトサイエンス研究センター

Novelorderinfrustratedmagnets

Molecular Photoscience Research Center, Kobe

Kawamura

University
National Institutes for Quantum Science and明石 遼介

量子科学技術研究開発機構

Solution of the Eliashberg equation with the electron-electron Coulomb interaction

Ryosuke Akashi

寺尾 貴道

岐阜大学工学部

Structural formation of inverse patchy particles

Takamichi Terao Faculty of Engineering, Gifu University

灘 浩樹

鳥取大学

Technology

モルファス一酸化シリコンの構造解析
66 2022-Ba-0060

University of Tsukuba

Hikaruルグ方程式解法の実装
64 2022-Bb-0007

Nagoya Institute of Technology

Yamamoto

ンチダイナミクスの研究
62 2022-Cb-0033

Department of Applied Physics, School of Applied

Nakayama

乱の理論
61 2022-Bb-0004

Katsumi Hagita
copolymers

Structural Analysis of Amorphous Silicon Monoxide by a Metadynamics Method with

Hiroki Nada

Tottori University

Unsupervised Machine Learning
押川 正毅

東京大学物性研究所

Gapless symmetry-protected topological phase in anisotropic triangle strips

Masaki
Institute for Solid State Physics, University of Tokyo
Oshikawa
67 2022-Bb-0022

ブリージングカゴメ反強磁性体におけるトポロジ
カルカイラル秩序への磁場効果

青山 和司

大阪大学大学院理学研究科宇宙地球専攻

Magnetic field effect on a topological chiral order in breathing-kagome
antiferromagnets

Kazushi Aoyama

Department of Earth and Space Science, Graduate
School of Science, Osaka University

68 2022-Bb-0028

イジング計算機のための古典アルゴリズムの開発

白井 達彦

早稲田大学基幹理工学部

Quantum algorithm for an Ising machine

Tatsuhiko Shirai

School of Fundamental Science and Engineering,
Waseda University

69 2022-Ba-0013

ボゾン系における量子多体傷跡状態の数値的研究

金子 隆威

早稲田大学 理工学術院総合研究所

Numerical study of quantum many-body scars in bosonic systems

Ryui Kaneko

Research Institute for Science and Engineering,
Waseda University

70 2022-Ba-0017

動的架橋エラストマーのレオロジーシミュレー

保田 侑亮

国立研究開発法人

産業技術総合研究所

Rheology Simulation of Dynamically Cross-linked Elastomers

Yusuke Yasudaション
71 2022-Ba-0033

テンソルネットワーク法による普遍性クラスの同

National Institute of Advanced Industrial Scienceand Technology

森田 悟史

慶應義塾大学大学院理工学研究科

Identification of universality classes by tensor network methods

Satoshi Morita

加藤 岳生

東京大学物性研究所

Numerical Study of Spin Transport in Magnetic Junctions

Takeo Kato

Faculty of Science and Technology, Keio University

定Institute for Solid State Physics, The University of
72 2022-Ba-0045

磁性接合系におけるスピン輸送の数値研究

Tokyo
テンソルネットワークを用いたテンソルデータ解
73 2022-Ca-0079

原田 健自

京都大学大学院情報学研究科

藤 陽平

東京大学工学系研究科物理工学専攻

Tensor data analysis by tensor network

KENJI HARADA

Graduate school of Informatics, Kyoto University

Yohei Fuji

Department of Applied Physics, University of Tokyo

Miyabi Hiyama

Gunma University析
観測誘起相転移における普遍性クラスの数値的研
74 2022-Bb-0026

Numerical investigation of universality classes in measurement-induced phase究

transitions

ホタル生物発光基質および関連分子の電子励起状
75 2022-Ba-0012

Theoretical study for firefly bioluminescence substrate analogs and related
樋山 みやび群馬大学

態

molecules

様々な架橋構造を持つ高分子網目の構造解析・力76 2022-Ba-0018

Structural Analysis and Mechanical Properties Simulations of Polymer Networks with保田 侑亮

国立研究開発法人

産業技術総合研究所

学物性シミュレーション
77 2022-Ba-0022

ブリージングカゴメ反強磁性体で実現するトポロ

National Institute of Advanced Industrial Science
Yusuke Yasuda

Various Network Structures
青山 和司

大阪大学大学院理学研究科宇宙地球専攻

Topological chirality order and its stability in breathing-kagome antiferromagnets

and Technology
Kazushi Aoyama

ジカルカイラリティ秩序とその安定性
78 2022-Ba-0044

蓄電固体ホモ・ヘテロ界面におけるイオン伝導のSchool of Science, Osaka University
小林 亮

名古屋工業大学

分子動力学解析79 2022-Ba-0065

マルチスピンフリップ法を用いたイジング計算機

Molecular dynamics analyses of ion migration at electrode-electrolyte interfaces and
Ryo Kobayashi

80 2022-Bb-0005

Nagoya Institute of Technology

grain boundaries in electrolytes
白井 達彦

早稲田大学基幹理工学部

An Ising machine based on multi-spin flip method

Tatsuhiko Shiraiの開発
ソフトマテリアルの秩序構造とそのダイナミク

Department of Earth and Space Science, Graduate

School of Fundamental Science and Engineering,
Waseda University
福田 順一

九州大学

大学院理学研究院

Calculation of ordered structures, dynamics and optical properties of soft materials

Jun-ichi Fukuda

Faculty of Science, Kyushu University

Takamichi Terao Faculty of Engineering, Gifu University

ス，光学的性質の計算
81 2022-Ba-0006

荷電patchy粒子系における構造形成

寺尾 貴道

岐阜大学工学部

Structural formation of inverse patchy particles

82 2022-Ba-0010

原子論的モデルによる永久磁石の保磁力機構研究早坂 太志

物質・材料研究機構

Atomistic model study on the coercivity mechanism of permanent magnets

HiroshiNational Institute for Materials Science
Hayasaka
83 2022-Ba-0062
84 2022-Ba-0066
85 2022-Ba-0003

量子パイロクロア磁性体の研究
情報統計力学におけるイジングモデルの解析
空間構造をもつ一次元量子スピン系の数値的研究

門脇 広明
関 優也
利根川 孝

東京都立大学 理学研究科 物理学専攻
慶應義塾大学
神戸大学大学院理学研究科

quantum pyrochrole magnet
Analysis of Ising model in statistical-mechanical informatics
Numerical Study of the One-Dimensional Quantum Spin Systems

HiroakiDepartment of Physics, Tokyo Metropolitan

Kadowaki

University

Yuya Seki

Keio University

Takashi

Graduate School of Science, Kobe University

Tonegawa
ANNポテンシャルを用いた大規模分子動力学シ
86 2022-Ba-0020

ミュレーションによるシリカガラスの圧力誘起配

若林 大佑

位数変化の研究87 2022-Ba-0030

ソフトマテリアルの秩序構造とそのダイナミク
ス，光学的性質の計算

福田 順一

高エネルギー加速器研究機構物質構造科学研究 Large-scale molecular-dynamics simulation of pressure-induced coordination

DaisukeInstitute of Materials Structure Science, High Energy

所change in silica glass with ANN potentials

Wakabayashi

Accelerator Research Organization (KEK)

Calculation of ordered structures, dynamics and optical properties of soft materials

Jun-ichi Fukuda

Faculty of Science, Kyushu University

九州大学

大学院理学研究院

88 2022-Ba-0034

極限環境下における破壊現象に関する分子動力学

三澤 賢明

福岡工業大学工学部知能機械工学科

Molecular dynamics study on destruction phenomena under extreme conditions

Masaaki Misawa

解析

Department of Intelligent Mechanical Engineering,
Fukuoka Institute of Technology

三角格子及びカゴメ格子上のハイゼンベルグ反強
89 2022-Ba-0038

磁性体の熱力学特性，励起スペクトルの数値的研

福元 好志

東京理科大学

Numerical studies on thermodynamics and excitation spectra in Heisenberg

Fukumoto

antiferromagnets on the triangular and kagome lattices

Yoshiyuki

Tokyo University of Science究
90 2022-Bb-0003

空間構造をもつ一次元量子スピン系の数値的研究利根川 孝

神戸大学大学院理学研究科

Numerical Study of the One-Dimensional Quantum Spin Systems

Takashi

Graduate School of Science, Kobe University

Tonegawa
球体カゴメ系{W72V30}における磁化過程，帯磁率
91 2022-Bb-0020

に対する大きなボンドランダムネスの効果の数値

福元 好志

的研究
グリシンナノ結晶が示す多彩な結晶形の大規模メ
92 2022-Ca-0092

Yoshiyuki

Tokyo University of Science

鳥取大学

Hiroki Nada
Development of the Low-Temperature Oxidation Model for Alternative Fuels Using李 敏赫

東京大学大学院工学系研究科機械工学専攻
Machine Learning

観測誘起相転移における普遍性クラスの数値的研

Numerical investigation of universality classes in measurement-induced phase
藤 陽平

東京大学工学系研究科物理工学専攻

究

Yohei Fuji

Department of Applied Physics, University of Tokyo

Kenta Arima

Graduate School of Engineering, Osaka University

Understanding electronic structures and reactivity of functional graphene sheets
有馬 健太

大阪大学 大学院 工学研究科

子状態と反応性評価
１次元フラストレート量子スピン系の数値的研究

University of Tokyo

transitions

加工用触媒としての機能性グラフェンシートの電95 2022-Ba-0031

Department of Mechanical Engineering, The
Minhyeok Lee

構築
94 2022-Ba-0064

Tottori University

Metadynamics Simulations

機械学習を用いた代替燃料の低温酸化反応モデル

96 2022-Ba-0025

Fukumoto

process and magnetic susceptibility in the spherical Kagome system {W72V30}
Analysis of Various Crystal Forms of Glycine Nanocrystals by Large-Scale
灘 浩樹

タダイナミクス計算解析
93 2022-Ca-0121

Numerical study of the effect of large bond randomness on the magnetization
東京理科大学

toward machining catalyst
飛田 和男

埼玉大学大学院理工学研究科物質科学部門

Numerical Study of One Dimensional Frustrated Quantum Spin Systems

Kazuo Hida

Novel phenomena in mismatched multilayer systems: Search for new candidate

Toshikazematerials and analysis of electronic structures

Kariyado

Division of Material Science, Graduate School of
Science and Engineering, Saitama University
97 2022-Ba-0057

非整合積層系の新奇物性：新物質の探索と電子状
苅宿 俊風

物材機構

態解析
98 2022-Ba-0059

2DMATによる２次元ホウ素シートボロフェンの構NIMS

高山 あかり早稲田大学

Structure analysis of borophene by using 2DMAT

Akari Takayama Waseda University

内田 尚志

北海道科学大学

Magnetic structures of multiple-Q orders in inversion-symmetric Hubbard models

Takashi Uchida

Hokkaido University of Science小野 頌太

東北大学金属材料研究所

Shota Ono

Tohoku University

Michio Otsuki

Graduate school of engineering science造解析
99 2022-Ba-0054

反転対称なハバード模型における多重Q秩序の磁気構造
100 2022-Ba-0048

振動数解析に基づくLennard-Jonesクラスターの準安定構造マップ
101 2022-Ca-0122
102 2022-A-0003

103 2022-A-0005

マクロな固体間摩擦の形状依存性$\beta''$-(ET)$̲2X$電荷移動錯体の感受率およびanalysis
大槻 道夫
Jeschke Harald

大阪大学基礎工学研究科
岡山大学異分野基礎科学研究所

Shape dependence of macroscopic friction between solids
FLEX computation of susceptibility and superconductivity of $\beta''$-(ET)$̲2X$

超伝導に関するFLEXを用いた理論研究

charge transfer salts

多波動力学的回折理論によるタンパク質結晶のX線

Calculation of X-ray difffraction intensities from protein crystals based on the n沖津 康平

東京大学 大学院工学系研究科

回折強度の計算
104 2022-A-0007

Metastable structure map of Lennard-Jones cluster based on vibrational frequency

ナノカーボン複合構造の分子動力学

Harald Jeschke

Research Institute for Interdisciplinary Science
Okayama University

Kouhei Okitsu

School of Engineering, University of Tokyo

beam dynamical diffraction therory
小林 慶裕

大阪大学大学院工学研究科

Molecular dynamics of nanocarbon heterostructure

Yoshihiro

Graduate School of Engineering, Osaka University

Kobayashi
105 2022-A-0009
106 2022-A-0011

トポロジカルネマティック超流動の非軸対称渦アクリレートポリマーにおける結合水に関する分

正木 祐輔

東北大学

Non-axisymmetric vortices in topological nematic superfluids

Yusuke Masaki

金鋼

大阪大学大学院基礎工学研究科

Molecular dynamics simulations for interfacial water in acrylate polymers

Kang Kim

子シミュレーション解析
107 2022-A-0012

高密度コロイドガラスの脱ガラス化の起源とダイ
ナミクス

Tohoku University
Graduate School of Engineering Science, Osaka
University

柳島 大輝

京都大学理学研究科物理学・宇宙物理学専攻

Origin and dynamics of devitrification in dense colloidal glasses

Taiki

Division of Physics and Astronomy, Graduate School

Yanagishima

of Science, Kyoto University

108 2022-A-0015

109 2022-A-0020

高次元量子ウォークのダイナミクス
多孔性金属錯体内における分子拡散の分子動力学

羽田野 直道細野 暢彦

東京大学生産技術研究所

東京大学大学院工学系研究科応用化学専攻

Dynamics of Quantum Walks in Higher Dimensions

Molecular Dynamics Simulation of Molecular Diffusion in Metal-Organic Frameworks

シミュレーション
110 2022-Ba-0053

ゆっくり地震から高速地震への遷移時刻の見積も鈴木 岳人

青山学院大学りとその数理的意義
111 2022-Bb-0016

透水係数の空間変化に基づく前震−本震系列の繰
り返し周期の決定

Estimation of the transition time from slow to fast earthquakes and its mathematical

Naomichi

Institute of Industrial Science, The University of

HatanoTokyo

NobuhikoDepartment of Applied Chemistry, Graduate School

Hosonoof Engineering, The University of Tokyo

Takehito Suzuki

Aoyama Gakuin University

Takehito Suzuki

Aoyama Gakuin University

implications
鈴木 岳人

青山学院大学

Determining the period of the mainshock repetition with foreshocks in terms of
permeability profile2022年度

CCMSスパコン共用事業枠課題一覧 / Supercomputing Consortium for Computational Materials Science Project List of Supercomputer System 2022
※共同利用ではなく共用事業の実施課題一覧。所属は申請時のデータ

前期課題 / The first half term
No.

課題名

氏名

所属

Title

Name

芝 隼人

東京大学 情報基盤センター

Graph neural network accelerated MD sampling

Hayato Shiba

Organization
Information Technology Center, University of

1 グラフニューラルネットワークによる分子動力学サンプリングの加速Tokyo
擬一次元有機物質TM系分子性導体に対する第一原理有効ハミルトニアンの網羅的
2

吉見 一慶

東京大学 物性研究所

A systematic ab initio study of quasi-one-dimensional molecular conductors TM salts

Institute for Solid State Physics, University of
Kazuyoshi Yoshimi

解析

Tokyo
Exciton Properties in Organic Optoelectronic Devices from Large-Scale Electronic

3 大規模電子状態計算による有機光デバイスの励起子物性の解析

藤田 貴敏

量子科学技術研究開発機構

National Institutes for Quantum Science and
Takatoshi Fujita

Structure Calculations

Technology
Waseda University/Toyota Physical and Chemical

4 高温超伝導の機構解析

今田 正俊

早稲田大学/豊田理化学研究所

Analysis on Superconducting Mechanism of high-Tc Superconductors

Masatoshi Imada
Research Institute5 省エネルギー次世代半導体デバイス開発のための量子論マルチシミュレーション

押山 淳

名古屋大学 未来材料・システム研究

Quantum-theory-based multiscale simulation for next-generation power devices

Atsushi Oshiyama

Nagoya University

所
6

分子動力学シミュレーションを用いた長鎖高分子ブレンド相溶性の効率的な計算

松林 伸幸

手法の開発

大阪大学 大学院基礎工学研究科 物質 Development of an efficient method for calculating miscibility of long-chain polymer
創成専攻 化学工学領域

blends using molecular dynamics simulations

Nobuyuki Matubayasi

Division of Chemical Engineering, Graduate
School of Engineering Science, Osaka University

7 磁性界面における歪み効果

合田 義弘

東京工業大学 物質理工学院

Strain effects at magnetic interfaces

Yoshihiro Gohda

8 富岳電池課題(B-1:燃料電池の電極界面反応)

杉野 修

東京大学 物性研究所

Fugaku Battery & Fuel-Cell (B-1：Electrode interface reaction in fuel cell)

Osamu Sugino

Tokyo Institute of Technology
Institute for Solid State Physics, University ofTokyo

9 磁性材料を対象とした基盤的シミュレーションコードの開発

福島 鉄也

東京大学 物性研究所

Development of fundamental simulation code for magnetic materials

Tetsuya Fukushima

Institute for Solid State Physics, University ofTokyo
10 大規模計算とデータ駆動手法による高性能永久磁石の開発

三宅 隆

産業技術総合研究所

Development of high-performance permanent magnets by large-scale simulation andTakashi Miyake
data-driven approach11

新規光触媒化合物の母構造および添加物に対するデータ駆動型研究(「富岳」を活藤井 幹也

奈良先端科学技術大学院大学

Data driven analysis for impurity effects on photocatalysts

神戶大学大学院 科学技術イノベー

Theoretical study of hydrogen-evolution semiconductor photocatalysts using first-

National Institute of Advanced Industrial Scienceand Technology
Mikiya Fujii

Nara Institute of Science and Technology

Seiichiro L. Ten-no

Kobe University

Name

Organization

用した革新的光エネルギー変換材料の実現)
12 第一原理計算による水素製造半導体光触媒の理論的研究

天能 精一郎
ション研究科/システム情報学研究科 principles calculations

後期課題 / The second half term
No.

課題名
1 グラフニューラルネットワークによる液体分子動力学代理モデルの開発

氏名
芝 隼人

所属
東京大学 情報基盤センター

Title
Development of surrogate model for liquid molecular dynamics based on graph neural

Hayato Shiba

networks
2 ベイズ最適化による有効模型推定ツールの開発

吉見 一慶

東京大学 物性研究所

Development of an effective model estimation tool by Bayesian optimization

Information Technology Center, University ofTokyo

Kazuyoshi Yoshimi

Institute for Solid State Physics, University ofTokyo

Exciton Dynamics in Organic Optoelectronic Devices from Large-Scale Electronic
3 大規模電子状態計算と時間分解分光による有機光デバイスの励起子ダイナミクス

藤田 貴敏

量子科学技術研究開発機構

National Institutes for Quantum Science and
Takatoshi Fujita

Structure Calculations and Time-Resolved Spectroscopy

Technology
Waseda University/Toyota Physical and Chemical

4 多層系銅酸化物の第一原理系統解析

今田 正俊

早稲田大学/豊田理化学研究所

Systematic Analyses on Multi̶Layer Copper Oxide Superconductors

Masatoshi Imada
Research Institute5 省エネルギー次世代半導体デバイス開発のための量子論マルチシミュレーション

押山 淳

名古屋大学 未来材料・システム研究

Quantum-theory-based multiscale simulation for next-generation power devices

Atsushi Oshiyama

Materials design of high performance magnetic materials

Tetsuya Fukushima

Nagoya University

所
6 高性能磁性材料のマテリアルデザイン福島 鉄也

東京大学 物性研究所

Institute for Solid State Physics, University ofTokyo

7 大規模計算とデータ駆動手法による高性能永久磁石の開発

三宅 隆

産業技術総合研究所

Development of high-performance permanent magnets by large-scale simulation anddata-driven approach

Takashi Miyake

National Institute of Advanced Industrial Scienceand Technology

The Institute for Solid State Physics (ISSP), The University of Tokyo
Address

5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, JapanPhone+81-4-7136-3207

Home Page

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