Materials Design and Exploration of Functions for Strongly Correlated Materials - Challenges to Non-equilibrium and Non-Periodic Systems

2020 Fiscal Year Annual Research Report

• Project/Area Number: 16H06345
• Research Institution: Waseda University
• Principal Investigator: 今田 正俊 早稲田大学, 理工学術院, 上級研究員(研究院教授) (70143542)
• Co-Investigator(Kenkyū-buntansha): 山地 洋平 東京大学, 大学院工学系研究科(工学部), 特任准教授 (00649428) ; 三澤 貴宏 早稲田大学, 理工学術院, 主任研究員(研究院准教授) (10582687) ; 野村 悠祐 国立研究開発法人理化学研究所, 創発物性科学研究センター, 研究員 (20793756) ; 三宅 隆 国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究チーム長 (30332638) ; 大槻 東巳 上智大学, 理工学部, 教授 (50201976) ; 井戸 康太 東京大学, 物性研究所, 助教 (50827251) ; 中村 和磨 九州工業大学, 大学院工学研究院, 教授 (60525236) ; 平山 元昭 国立研究開発法人理化学研究所, 創発物性科学研究センター, ユニットリーダー (70761005) ; 有田 亮太郎 東京大学, 大学院工学系研究科(工学部), 教授 (80332592) ; 望月 維人 早稲田大学, 理工学術院, 教授 (80450419) ; 酒井 志朗 国立研究開発法人理化学研究所, 創発物性科学研究センター, 上級研究員 (80506733) ; 只野 央将 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (90760653)
• Project Period (FY): 2016-05-31 – 2021-03-31
• Keywords: 第一原理計算 / 強相関電子系 / 階層的第一原理強相関電子状態計算法 / 高温超伝導 / 量子流体と量子スピン液体 / 分数化 / 非平衡・ダイナミクス / 非周期系

Outline of Annual Research Achievements

角度分解光電子分光データの機械学習で得られた自己エネルギーの顕著なピーク構造が、電子の分数化によって生じることを示し、共鳴非弾性X線散乱の実験を行えば分数化の更なる証拠が得られるという予言を行ない、予言は実験で実証された。数十種類の鉄系超伝導体の第一原理有効ハミルトニアンを導出した。近年発見された銅酸化物類似物質であるニッケル酸化物超伝導体においても、物質予言などを行った。
長年の論争の対象だった量子スピン模型での量子スピン液体の存在の高精度立証に成功し、また分子性結晶の5種類の化合物に対する第一原理的な網羅計算を行い、実験的に示唆されていた量子スピン液体の再現にも成功した。さらにそのスピン液体が1次元と2次元を繋ぐ、dualなスピン液体であることを明らかにした。これらの複数のスピン液体では、どれもスピン励起がギャップレスになりスピノンに分数化することを示した。以上、電子やスピンの分数化が複数立証された。
またイリジウム酸化物 Ca5Ir3O12 の有効ハミルトニアン導出を行い、この物質が中程度電子相関系であること、スピン軌道相互作用とフント結合の競合系であることを示した。
典型準結晶であるペンローズ格子の超伝導秩序変数がフラクタルな実空間構造をもつ新奇超伝導となることを見出した。また磁場下で超伝導秩序変数の符号が空間変調するエキゾチック超伝導状態が現れることを示した。さらに、準周期構造上の電子の分布についても調べ、サイト間相互作用の働きが周期系とは異なり電荷分布を大きく変えることを指摘し、これをハイパーユニフォーミティーという概念で特徴づけた。
ナノサイズのトポロジカル磁気構造である「スキルミオン」の電流駆動ダイナミクスやマイクロ波駆動ダイナミクスをシミュレーションおよび解析理論により明らかにした。その結果、この磁気構造が豊かなエレクトロニクス素子機能を備えていることが分かった。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] BAQIS/Chinese Academy of Sciences(中国)
  • Country Name: CHINA
  • Counterpart Institution: BAQIS/Chinese Academy of Sciences
• [Int'l Joint Research] Flatiron institute/Rutgers University(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Flatiron institute/Rutgers University
• [Int'l Joint Research] スイス連邦工科大学ローザンヌ 校/Fribourg Univ.(スイス)
  • Country Name: SWITZERLAND
  • Counterpart Institution: スイス連邦工科大学ローザンヌ 校/Fribourg Univ.
• [Int'l Joint Research] Max Planck Institute/Goethe Univ./Univ. Wuerzburg(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: Max Planck Institute/Goethe Univ./Univ. Wuerzburg
• [Int'l Joint Research] Paris-Saclay University/Ecole Polytechnique/Univ. Paris-Sud(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: Paris-Saclay University/Ecole Polytechnique/Univ. Paris-Sud
• [Int'l Joint Research]
  • # of Other Countries: 7
• [Journal Article] Ab initio downfolding based on the GW approximation for infinite-layer nickelates (2022)
  • Author(s): M. Hirayama, Y. Nomura, and R. Arita,
  • Journal Title: Front. Phys. Volume: 10 Pages: 824144
  • DOI: 10.3389/fphy.2022.824144
  • Peer Reviewed
• [Journal Article] Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO3 (2022)
  • Author(s): 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
  • Journal Title: npj Quantum Materials Volume: 7 Pages: 13 (1-6)
  • DOI: 10.1038/s41535-021-00418-2
  • Peer Reviewed / Open Access
• [Journal Article] Hyperuniform electron distributions controlled by electron interactions in quasicrystal (2022)
  • Author(s): S. Sakai, R. Arita, and T. Ohtsuki
  • Journal Title: Phys. Rev. B Volume: 105 Pages: 054202 (1-16)
  • DOI: 10.1103/PhysRevB.105.054202
  • Peer Reviewed
• [Journal Article] Multipole polaron in the devil's staircase of CeSb (2022)
  • Author(s): 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, T. Kondo
  • Journal Title: Nat. Mater. Volume: 21 Pages: 410
  • DOI: 10.1038/s41563-021-01188-9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Topological Magnets: Functions Based on Berry Phase and Multipoles (2022)
  • Author(s): S. Nakatsuji and R. Arita,
  • Journal Title: Annual Review of Condensed Matter Physics Volume: 13 Pages: 119-142
  • DOI: 10.1146/annurev-conmatphys-031620-103859
  • Peer Reviewed
• [Journal Article] Unconventional dual 1D-2D quantum spin liquid revealed by $ ab $$ initio $ studies on organic solids family (2022)
  • Author(s): K Ido, K Yoshimi, T Misawa, M Imada
  • Journal Title: npj Quantum Mater. Volume: 7 Pages: 48
  • DOI: 10.1038/s41535-022-00452-8
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ab initio derivation and exact-diagonalization analysis of low-energy effective Hamiltonians for β′-X[Pd(dmit)2] (2021)
  • Author(s): Kazuyoshi Yoshimi, Takao Tsumuraya, and Takahiro Misawa
  • Journal Title: Phys. Rev. Res. Volume: 3 Pages: 43224
  • DOI: 10.1103/PhysRevResearch.3.043224
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ab initio derivation of low-energy Hamiltonians for systems with strong spin-orbit interaction: Application to Ca5Ir3O12 (2021)
  • Author(s): M. Charlebois, J.-B. Moree, K. Nakamura, Y. Nomura, T. Tadano, Y. Yoshimoto, Y. Yamaji, T. Hasegawa, K. Matsuhira, M. Imada
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 075153(1-19).
  • DOI: 10.1103/PhysRevB.104.075153
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Analysis of Kohn-Sham Eigenfunctions Using a Convolutional Neural Network in Simulations of the Metal-Insulator Transition in Doped Semiconductors (2021)
  • Author(s): Y. Harashima, T. Mano, K. Slevin, and T. Ohtsuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 90 Pages: 94001
  • DOI: 10.7566/JPSJ.90.094001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Benchmark for Ab Initio Prediction of Magnetic Structures Based on Cluster-Multipole Theory (2021)
  • Author(s): M.-T. Huebsch, T. Nomoto, M.-T. Suzuki, R.Arita
  • Journal Title: Phys. Rev. X Volume: 11 Pages: 011031(1-25)
  • DOI: 10.1103/PhysRevX.11.011031
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Breaking of Thermopower-Conductivity Trade-Off in LaTiO3 Film around Mott Insulator to Metal Transition (2021)
  • Author(s): T. Katase, X. He, T. Tadano, J. M. Tomczak, T. Onozato, K. Ide, B. Feng, T. Tohei, H. Hiramatsu, H. Ohta, Y. Ikuhara, H. Hosono, and T. Kamiya
  • Journal Title: Adv. Sci. Volume: 2102097 Pages: (1-8)
  • DOI: 10.1002/advs.202102097
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Charge Order and Superconductivity as Competing Brothers in Cuprate High-Tc Superconductors (2021)
  • Author(s): Masatoshi Imada
  • Journal Title: J. Phys. Soc. Jpn. Volume: 90 Pages: 111009 (1-10)
  • DOI: 10.7566/JPSJ.90.111009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Data analysis on ab initio effective Hamiltonians of iron-based superconductors (2021)
  • Author(s): K Ido, Y Motoyama, K Yoshimi, T Misawa
  • Journal Title: 10.48550/arXiv.2109.09121 Volume: 0 Pages: 0
  • DOI: 10.48550/arXiv.2109.09121
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dirac-Type Nodal Spin Liquid Revealed by Refined Quantum Many-Body Solver Using Neural-Network Wave Function, Correlation Ratio, and Level Spectroscopy (2021)
  • Author(s): Yusuke Nomura and Masatoshi Imada
  • Journal Title: Phys. Rev. X Volume: 11 Pages: 031034(1-19)
  • DOI: 10.1103/PhysRevX.11.031034
  • Peer Reviewed / Open Access
• [Journal Article] Dynamical switching of magnetic topology in microwave-driven itinerant magnet (2021)
  • Author(s): R. Eto, and M. Mochizuki
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 104425(1-13)
  • DOI: 10.1103/PhysRevB.104.104425
  • Peer Reviewed
• [Journal Article] Effect of Electron-Electron Interactions on Metallic State in Quasicrystals, (2021)
  • Author(s): S. Sakai and A. Koga
  • Journal Title: Mater. Trans. Volume: 62 Pages: 380-385
  • DOI: 10.2320/matertrans.MT-MB2020001
  • Peer Reviewed
• [Journal Article] Electronic Correlation Strength of Inorganic Electrides from First Principles (2021)
  • Author(s): S. Kanno, T. Tada, T. Utsumi, K. Nakamura, H. Hosono
  • Journal Title: J. Phys. Chem. Lett. Volume: 12 Pages: (12020-12025)
  • DOI: 10.1021/acs.jpclett.1c03637
  • Peer Reviewed
• [Journal Article] Floquet theory of photoinduced topological phase transitions in the organic salt α-(BEDT-TTF)2I3 irradiated with elliptically polarized light (2021)
  • Author(s): K. Kitayama, Y. Tanaka, M. Ogata, and M. Mochizuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 90 Pages: 104705(1-12)
  • DOI: 10.7566/JPSJ.90.104705
  • Peer Reviewed
• [Journal Article] Giant Effective Damping of Octupole Oscillation in an Antiferromagnetic Weyl Semimetal (2021)
  • Author(s): S. Miwa, S. Iihama, T. Nomoto, T. Tomita, T. Higo, M. Ikhlas, S. Sakamoto, Y. Otani, S. Mizukami, R.Arita, S. Nakatsuji
  • Journal Title: Small Science Volume: 1 Pages: 202000062(1-8)
  • DOI: 10.48550/arXiv.2109.01223
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Helping restricted Boltzmann machines with quantum-state representation by restoring symmetry (2021)
  • Author(s): Yusuke Nomura
  • Journal Title: J. Phys.: Condens. Matter Volume: 33 Pages: 174003(1-8)
  • DOI: 10.1088/1361-648X/abe268
  • Peer Reviewed
• [Journal Article] Hidden self-energies as origin of cuprate superconductivity revealed by machine learning (2021)
  • Author(s): Y. Yamaji, T. Yoshida, A. Fujimori, and M. Imada
  • Journal Title: Phys. Rev. Res. Volume: 3 Pages: 043099(1-37)
  • DOI: 10.1103/PhysRevResearch.3.043099
  • Peer Reviewed / Open Access
• [Journal Article] Large phonon drag thermopower boosted by massive electrons and phonon leaking in LaAlO3/LaNiO3/LaAlO3 heterostructure (2021)
  • Author(s): M. Kimura, X. He, T. Katase, T. Tadano, J. M. Tomczak, M. Minohara, R. Aso, H. Yoshida, K. Ide, S. Ueda, H. Hiramatsu, H. Kumigashira, H. Hosono, and T. Kamiya
  • Journal Title: Nano Lett. Volume: 21 Pages: 9240-9246
  • DOI: 10.1021/acs.nanolett.1c03143
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Local moments versus itinerant antiferromagnetism: Magnetic phase diagram and spectral properties of the anisotropic square lattice Hubbard model (2021)
  • Author(s): Marcin Raczkowski, Fakher F. Assaad, Masatoshi Imada
  • Journal Title: Phys. Rev. B Volume: 103 Pages: 125137 (1-18)
  • DOI: 10.1103/PhysRevB.103.125137
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Long-range spin transport on the surface of topological Dirac semimetal (2021)
  • Author(s): Yasufumi Araki, Takhiro Misawa and Kentaro Nomura
  • Journal Title: Phys. Rev. Res. Volume: 3 Pages: 23219
  • DOI: 10.1103/PhysRevResearch.3.023219
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Machine learning detection of Berezinskii-Kosterlitz-Thoulesstransitions in q-state clock models (2021)
  • Author(s): Y. Miyajima, Y. Murata, Y. Tanaka, and M. Mochizuki
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 075114(1-10)
  • DOI: 10.1103/PhysRevB.104.075114
  • Peer Reviewed
• [Journal Article] Machine learning the dynamics of quantum kicked rotor (2021)
  • Author(s): T. Mano, and T. Ohtsuki
  • Journal Title: Ann. Phys. Volume: 435 Pages: 168500
  • DOI: 10.1016/j.aop.2021.168500
  • Peer Reviewed
• [Journal Article] Multicriticality of two-dimensional class-D disordered topological superconductors (2021)
  • Author(s): T. Wang, Z. Pan, T. Ohtsuki, I.A. Gruzberg, and R Shindou
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 184201
  • DOI: 10.1103/PhysRevB.104.184201
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Orbital and magnetic ordering and domain-wall conduction in ferrimagnet La5Mo4O16 (2021)
  • Author(s): T. Katsufuji, M. Miyake, M. Naka, M. Mochizuki, S. Kogo, T. Kajita, Y. Shimizu, M. Itoh, T. Hasegawa, S. Shimose, S. Noguchi, T. Saiki, T. Sato and F. Kagawa
  • Journal Title: Phys. Rev. Res. Volume: 3 Pages: 13105
  • DOI: 10.1103/PhysRevResearch.3.013105
  • Peer Reviewed / Open Access
• [Journal Article] Order-N orbital-free density-functional calculations with machine learning of functional derivatives for semiconductors and metals (2021)
  • Author(s): Fumihiro Imoto, Masatoshi Imada, and Atsushi Oshiyama
  • Journal Title: Phys. Rev. Res. Volume: 3 Pages: 033198 (1-17)
  • DOI: 10.1103/PhysRevResearch.3.033198
  • Peer Reviewed / Open Access
• [Journal Article] Origin of anomalous temperature dependence of the Nernst effect in narrow-gap semiconductors (2021)
  • Author(s): R. Masuki, T. Nomoto and R. Arita
  • Journal Title: Phys. Rev. B Volume: 103 Pages: L041202(1-5)
  • DOI: 10.1103/PhysRevB.103.L041202
  • Peer Reviewed
• [Journal Article] Predicted photoinduced pair annihilation of emergent magnetic charges in the organic salt α-(BEDT-TTF)2I3 irradiated by linearly polarized light (2021)
  • Author(s): K. Kitayama, M. Mochizuki, Y. Tanaka, and M. Ogata
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 075127(1-9)
  • DOI: 10.1103/PhysRevB.104.075127
  • Peer Reviewed
• [Journal Article] Proposed Negative Thermal Expansion in Honeycomb-Lattice Antiferromagnets (2021)
  • Author(s): Y. Uwabo, and M. Mochizuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 90 Pages: 104712(1-6)
  • DOI: 10.7566/JPSJ.90.104712
  • Peer Reviewed
• [Journal Article] Purifying Deep Boltzmann Machines for Thermal Quantum States (2021)
  • Author(s): Yusuke Nomura, Nobuyuki Yoshioka, and Franco Nori
  • Journal Title: Phys. Rev. Lett. Volume: 127 Pages: 060601(1-7)
  • DOI: 10.1103/PhysRevLett.127.060601
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] qeirreps: An open-source program for Quantum ESPRESSO to compute irreducible representations of Bloch wavefunctions (2021)
  • Author(s): Akishi Matsugatani, Seishiro Ono, Yusuke Nomura, and Haruki Watanabe,
  • Journal Title: Comput. Phys. Commun. Volume: 264 Pages: 107948(1-29)
  • DOI: 10.1016/j.cpc.2021.107948
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Real-time dynamics of the photoinduced topological state in organic conductor α-(BEDT-TTF)2I3 under continuous-wave and pulse excitations (2021)
  • Author(s): Y. Tanaka, and M. Mochizuki
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 085123(1-7)
  • DOI: 10.1103/PhysRevB.104.085123
  • Peer Reviewed
• [Journal Article] Renormalization group analysis of Dirac fermions with a random mass (2021)
  • Author(s): Z. Pan, T. Wang, T. Ohtsuki, and R. Shindou
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 174205
  • DOI: 10.1103/PhysRevB.104.174205
  • Peer Reviewed
• [Journal Article] Resonant Inelastic X-Ray Scattering Spectra of Cuprate Superconductors Predicted by Model of Fractionalized Fermions (2021)
  • Author(s): Masatoshi Imada
  • Journal Title: J. Phys. Soc. Jpn. Volume: 90 Pages: 074702 (1-10)
  • DOI: 10.7566/JPSJ.90.074702
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] RESPACK: An ab initio tool for derivation of effective low-energy model of material (2021)
  • Author(s): Kazuma Nakamura, Yoshihide Yoshimoto, Yusuke Nomura, Terumasa Tadano, Mitsuaki Kawamura, Taichi Kosugi, Kazuyoshi Yoshimi, Takahiro Misawa, YuichMotoyama,i
  • Journal Title: Comp. Phys. Comm. Volume: 261 Pages: 107781
  • DOI: 10.1016/j.cpc.2020.107781
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spin-wave dispersion and exchange stiffness in Nd2Fe14B and RFe11Ti (R=Y, Nd, Sm) from first-principles calculations (2021)
  • Author(s): Taro Fukazawa, Hisazumi Akai, Yosuke Harashima and Takashi Miyake
  • Journal Title: Phys. Rev. B Volume: 103 Pages: 024418(1-7)
  • DOI: 10.1103/PhysRevB.103.024418
  • Peer Reviewed
• [Journal Article] Transfer matrix study of the Anderson transition in non-Hermitian systems (2021)
  • Author(s): X. Luo, T. Ohtsuki, and R. Shindou
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 104203
  • DOI: 10.1103/PhysRevB.104.104203
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Universality classes of the Anderson transition in the three-dimensional symmetry classes AIII, BDI, C, D, and CI (2021)
  • Author(s): T. Wang, T. Ohtsuki, and R. Shindou
  • Journal Title: Phys. Rev. B Volume: 104 Pages: 14206
  • DOI: 10.1103/PhysRevB.104.014206
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Universality classes of the Anderson transitions driven by non-Hermitian disorder (2021)
  • Author(s): X. Luo, T. Ohtsuki, R. Shindou
  • Journal Title: Phys. Rev. Lett. Volume: 126 Pages: 90402
  • DOI: 10.1103/PhysRevLett.126.090402
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Data analysis on ab initio effective Hamiltonians of iron-based superconductors (2021)
  • Author(s): K Ido, Y Motoyama, K Yoshimi, T Misawa
  • Journal Title: arXiv:2109.09121 Volume: 0 Pages: 0
  • DOI: 10.48550/arXiv.2109.09121 Focus to learn more
  • Int'l Joint Research
• [Journal Article] A perspective on conventional high-temperature superconductors at high pressure: Methods and materials (2020)
  • Author(s): J. A. Flores-Livas, L. Boeri, A. Sanna, G. Profeta, R. Arita, M. Eremets
  • Journal Title: Physics Reports Volume: 856 Pages: 1-78
  • DOI: 10.1016/j.physrep.2020.02.003
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Asymmetric melting of a one-third plateau in kagome quantum antiferromagnets (2020)
  • Author(s): T. Misawa, Y. Motoyama, and Y. Yamaji
  • Journal Title: Phys. Rev. B Volume: 102 Pages: 094419(1-7)
  • DOI: 10.1103/PhysRevB.102.094419
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ballistic transport in disordered Dirac and Weyl semimetals (2020)
  • Author(s): K. Kobayashi, M. Wada, and T. Ohtsuki
  • Journal Title: Phys. Rev. Res. Volume: 2 Pages: 22061
  • DOI: 10.48550/arXiv.2003.01929
  • Peer Reviewed / Open Access
• [Journal Article] Devil's staircase transition of the electronic structures in CeSb (2020)
  • Author(s): K. Kuroda, Y. Arai, N. Rezaei, S. Kunisada, S. Sakuragi, M. Alaei, Y. Kinoshita, C. Bareille, R. Noguchi, M. Nakayama, S. Akebi, M. Sakano, K. Kawaguchi, M. Arita, S. Ideta, K. Tanaka, H. Kitazawa, K. Okazaki, M. Tokunaga, Y. Haga, S. Shin, H. S. Suzuki, R. Arita and T. Kondo
  • Journal Title: Nat. Commun. Volume: 11 Pages: 2888 (1-9)
  • DOI: 10.1038/s41467-020-16707-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dynamical spin-to-charge conversion on the edge of quantum spin Hall insulator (2020)
  • Author(s): Yasufumi Araki, Takahiro Misawa, Kentaro Nomura
  • Journal Title: Phys. Rev. Res. Volume: 2 Pages: 23195
  • DOI: 10.1103/PhysRevResearch.2.023195
  • Peer Reviewed / Open Access
• [Journal Article] Electrical manipulation of a topological antiferromagnetic state (2020)
  • Author(s): H. Tsai, T. Higo, K. Kondou, T. Nomoto, A. Sakai, A. Kobayashi, T. Nakano, K. Yakushiji, R. Arita, S. Miwa, Y. Otani and S. Nakatsuji
  • Journal Title: Nature Volume: 580 Pages: 608-613
  • DOI: 10.1038/s41586-020-2211-2
  • Peer Reviewed
• [Journal Article] Electronic correlation and geometrical frustration in molecular solids: A systematic ab initio study of β′-X[Pd(dmit)2]2 (2020)
  • Author(s): Takahiro Misawa, Kazuyoshi Yoshimi, and Takao Tsumuraya
  • Journal Title: Phys. Rev. Res. Volume: 2 Pages: 32072
  • DOI: 10.1103/PhysRevResearch.2.032072
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of the transverse thermoelectric conductivity originating from stationary points in nodal lines (2020)
  • Author(s): S. Minami, F. Ishii, M. Hirayama, T. Nomoto, T. Koretsune, and R. Arita,
  • Journal Title: Phys. Rev. B Volume: 102 Pages: 205128 (1-8)
  • DOI: 10.1103/PhysRevB.102.205128
  • Peer Reviewed
• [Journal Article] Formation Mechanism of the Helical Q Structure in Gd-Based Skyrmion Materials (2020)
  • Author(s): T. Nomoto, T. Koretsune, R. Arita
  • Journal Title: Phys. Rev. Lett. Volume: 125 Pages: 117204(1-6)
  • DOI: 10.1103/PhysRevLett.125.117204
  • Peer Reviewed
• [Journal Article] Local force method for the ab initio tight-binding model: Effect of spin-dependent hopping on exchange interactions (2020)
  • Author(s): T. Nomoto, T. Koretsune and R. Arita
  • Journal Title: Phys. Rev. B Volume: 102 Pages: 014444 (1-10)
  • DOI: 10.1103/PhysRevB.102.014444
  • Peer Reviewed
• [Journal Article] Machine Learning Quantum States - Extensions to Fermion-Boson Coupled Systems and Excited-State Calculations (2020)
  • Author(s): Yusuke Nomura
  • Journal Title: J. Phys. Soc. Jpn. Volume: 89 Pages: 054706(1-9)
  • DOI: 10.7566/JPSJ.89.054706
  • Peer Reviewed
• [Journal Article] Magnetic exchange coupling in cuprate-analog d9 nickelates (2020)
  • Author(s): Yusuke Nomura, Takuya Nomoto, Motoaki Hirayama, and Ryotaro Arita
  • Journal Title: Phys. Rev. Res. Volume: 2 Pages: 043144(1-9)
  • DOI: 10.1103/PhysRevResearch.2.043144
  • Peer Reviewed / Open Access
• [Journal Article] Observation of small Fermi pockets protected by clean CuO2 sheets of a high-Tc superconductor (2020)
  • Author(s): S. Kunisada, S. Isono, Y. Kohama, S. Sakai, C. Bareille, S. Sakuragi, R. Noguchi, K. Kurokawa, K. Kuroda, Y. Ishida, S. Adachi, R. Sekine, T. K. Kim, C. Cacho, S. Shin, T. Tohyama, K. Tokiwa, T. Kondo,
  • Journal Title: Science Volume: 369 Pages: 833(1-6)
  • DOI: 10.1126/science.aay7311
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Physical properties of weak-coupling quasiperiodic superconductors (2020)
  • Author(s): N. Takemori, R. Arita, and S. Sakai
  • Journal Title: Phys. Rev. B Volume: 102 Pages: 115108(1-8)
  • DOI: 10.1103/PhysRevB.102.115108
  • Peer Reviewed
• [Journal Article] Predicted photoinduced topological phases in organic salt α-(BEDT-TTF)2I3 (2020)
  • Author(s): K. Kitayama and M. Mochizuki
  • Journal Title: Phys. Rev. Res. Volume: 2 Pages: 023229(1-7)
  • DOI: 10.1103/PhysRevResearch.2.023229
  • Peer Reviewed / Open Access
• [Journal Article] Role of atomic-scale thermal fluctuations in the coercivity (2020)
  • Author(s): Yuta Toga, Seiji Miyashita, Akimasa Sakuma and Takashi Miyake
  • Journal Title: npj Comput. Mater. Volume: 6 Pages: 67(1-7)
  • DOI: 10.1038/s41524-020-0325-6
  • Peer Reviewed / Open Access
• [Journal Article] Single-Particle Spectral Function Formulated and Calculated by Variational Monte Carlo Method with Application to d-Wave Superconducting State (2020)
  • Author(s): Maxime Charlebois and Masatoshi Imada
  • Journal Title: Phys. Rev. X Volume: 10 Pages: 041023(1-14)
  • DOI: 10.1103/PhysRevX.10.041023
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Superconductivity in Uniquely Strained RuO2 Films (2020)
  • Author(s): M. Uchida, T. Nomoto, M. Musashi, R. Arita and M. Kawasaki
  • Journal Title: Phys. Rev. Lett. Volume: 125 Pages: 147001(1-5)
  • DOI: 10.1103/PhysRevLett.125.147001
  • Peer Reviewed
• [Journal Article] Theory of the Inverse Faraday Effect due to the Rashba Spin-Oribt Interactions: Roles of Band Dispersions and Fermi Surfaces (2020)
  • Author(s): Y. Tanaka, T. Inoue, and M. Mochizuki
  • Journal Title: New J. Phys. Volume: 22 Pages: 083054(1-11)
  • DOI: 10.1088/1367-2630/aba5be
  • Peer Reviewed / Open Access
• [Presentation] Cluster multipole theory for functional antiferromagnets (2022)
  • Author(s): Ryotaro Arita
  • Organizer: International Symposium on Frontier of Materials Science (Online)
  • Int'l Joint Research / Invited
• [Presentation] Artificial neural networks for quantum many-body problems (2022)
  • Author(s): Takashi Miyake
  • Organizer: APS March Meeting (Online)
  • Int'l Joint Research / Invited
• [Presentation] Self-energy pole in doped Mott insulators and its relevance to high-Tc cuprates (2021)
  • Author(s): S. Sakai
  • Organizer: Conference on Condensed Matter Physics (Online)
  • Int'l Joint Research / Invited
• [Presentation] Effect of electron-electron interactions in quasicrystalline metals (2021)
  • Author(s): S. Sakai
  • Organizer: IRN Theory forum (Online)
  • Int'l Joint Research / Invited
• [Presentation] Machine learning magneto-fingerprints in mesoscopic systems (2021)
  • Author(s): Tomi Ohtsuki
  • Organizer: Artificial intelligence, mathematics and physics
  • Int'l Joint Research / Invited
• [Presentation] Machine learning magneto-fingerprints in mesoscopic systems (2021)
  • Author(s): Tomi Ohtsuki
  • Organizer: ASG talk, Institute for Basic Science
  • Int'l Joint Research / Invited
• [Presentation] First-principles study on high Tc superconductivity in superhydrides under high pressures (2021)
  • Author(s): Ryotaro Arita
  • Organizer: Materials Research Meeting 2021
  • Int'l Joint Research / Invited
• [Presentation] Ab initio Migdal-Eliashberg study on high Tc superconductivity in hydrides under high pressure (2021)
  • Author(s): Ryotaro Arita
  • Organizer: Superconducting Hybrids@Extreme (Online)
  • Int'l Joint Research / Invited
• [Presentation] Quantum Effects in Superhydrides Under High Pressures (2021)
  • Author(s): Ryotaro Arita
  • Organizer: Quantum Materials Symposium 2021 (QMS2021) (Online)
  • Int'l Joint Research / Invited
• [Presentation] Artificial Neural Networks for Analyzing Quantum Many-Body Problems (2021)
  • Author(s): Yusuke Nomura
  • Organizer: KMS 2021 Winter Conference (Online)
  • Int'l Joint Research / Invited
• [Presentation] Artificial neural networks for representing quantum many-body states (2021)
  • Author(s): Yusuke Nomura
  • Organizer: Quantum Techniques in Machine Learning (QTML) 2021 (Online)
  • Int'l Joint Research / Invited
• [Presentation] Materials design of cuprate-analog nickelates and magnetic exchange coupling (2021)
  • Author(s): Yusuke Nomura
  • Organizer: 2nd International Meeting on Thin Film Interfaces, Surfaces and Composite Crystals (Online)
  • Int'l Joint Research / Invited
• [Presentation] Purifying deep Boltzmann machines for thermal quantum states (2021)
  • Author(s): Yusuke Nomura
  • Organizer: APW-RIKEN-Tsinghua-Kavli workshop "Highlights on condensed matter physics" 2021 (Online)
  • Int'l Joint Research / Invited
• [Presentation] Materials design of layered d9 nickelates and magnetic exchange coupling (2021)
  • Author(s): Yusuke Nomura
  • Organizer: Quantum Liquid Crystals 2021 (QLC2021) (Online)
  • Int'l Joint Research / Invited
• [Presentation] Dynamical manipulations of topological magnetism with light and microwave electromagnetic fields (2021)
  • Author(s): M. Mochizuki
  • Organizer: International Conference on Frustration, Topology, and Spin Textures (ICFTS2021)
  • Int'l Joint Research / Invited
• [Presentation] Theory of Magnetism-Induced Negative Thermal Expansion in Inverse Perovskite Antiferromagnets (2021)
  • Author(s): M. Mochizuki
  • Organizer: International Conference on Condensed Matter Physics (CONMAT2021) (Online)
  • Int'l Joint Research / Invited
• [Presentation] Theory of Photoinduced Spin Polarization in Spin-Orbit-Coupled Systems (2021)
  • Author(s): M. Mochizuki
  • Organizer: The 11th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2021)
  • Int'l Joint Research / Invited
• [Presentation] Data-driven materials design of high-performance permanent magnets (2021)
  • Author(s): Takashi Miyake
  • Organizer: e-ASIA Joint Research Program Online Workshop on Materials Informatics
  • Int'l Joint Research / Invited
• [Presentation] Hidden self-energies as origin of cuprate superconductivity revealed by Boltzmann machine regression (2021)
  • Author(s): Y. Yamaji
  • Organizer: The 12th International Conference on Advanced Materials and Devices (ICAMD 2021)
  • Int'l Joint Research / Invited
• [Presentation] Ab initio and machine learning studies combined with spectroscopic data on cuprates superconductors as "integrated spectroscopy" ---electron fractionalization and superconducting mechanism (2021)
  • Author(s): Masatoshi Imada
  • Organizer: 7th International Conference on Superconductivity and Magnetism (Online)
  • Int'l Joint Research / Invited
• [Presentation] Machine learning methods for quantum many-body solver and experimental-data analyzer in physics (2021)
  • Author(s): Masatoshi Imada
  • Organizer: International Conference on Quantum Artificial Intelligence (Online)
  • Int'l Joint Research / Invited
• [Presentation] Formation mechanism of helical Q structure in Gd-based skyrmion materials: A first-principles study (2020)
  • Author(s): Ryotaro Arita
  • Organizer: APW-RIKEN-Tsinghua-Kavli workshop "Highlights on condensed matter physics" (Online)
  • Int'l Joint Research / Invited
• [Presentation] Ab initio Eliashberg study on anharmonicity, zero-point motion, and retardation effect in superhydrides (2020)
  • Author(s): Ryotaro Arita
  • Organizer: Winter Conference "Quantum Matter: Computation Meets Experiment"
  • Int'l Joint Research / Invited
• [Presentation] Machine learning for analyzing strongly-correlated systems (2020)
  • Author(s): Yusuke Nomura
  • Organizer: International Workshop on High-Performance Computing and Programming on Quantum Chemistry and Physics 2020 (HPCPQCP2020)
  • Int'l Joint Research / Invited
• [Presentation] Hidden self-energies as origin of high-temperature superconductivity revealed by Boltzmann machine (2020)
  • Author(s): Y. Yamaji
  • Organizer: 33rd International Symposium on Superconductivity
  • Int'l Joint Research / Invited
• [Presentation] Ab initio and machine learning studies on cuprates reveal hidden self-energy structure and superconducting mechanism (2020)
  • Author(s): Masatoshi Imada
  • Organizer: Quantum Complex Matter 2020 (Online)
  • Int'l Joint Research / Invited
• [Remarks] 早稲田大学理工学術院総合研究所 今田グループ _最近の出版論文
  • URL: https://www.aoni.waseda.jp/imada/html/publication.html