Sota Kitamura (北村 想太)

Program-Specific Senior Lecturer, Kyoto University
京都大学大学院理学研究科 相関設計物理学特別講座 特定講師

kitamura.sota.8y 0x40 kyoto-u.ac.jp

Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
〒606-8502 京都府京都市左京区北白川追分町 京都大学 理学研究科5号館 431号室

Research Interests:
condensed matter theory, nonequilibrium quantum systems, nonperturbative transport, Floquet engineering

学歴

2008年03月 岡山県立岡山朝日高校卒業
2012年03月 東京大学理学部物理学科卒業
2014年03月 東京大学大学院理学系研究科物理学専攻 修士課程修了
2017年03月 東京大学大学院理学系研究科物理学専攻 博士課程修了

職歴

2012年10月 - 2017年03月 フォトンサイエンス・リーディング大学院 (ALPS) コース生
2017年04月 - 2019年03月 マックスプランク複雑系物理学研究所 博士研究員
2019年04月 - 2026年04月 東京大学大学院工学系研究科物理工学専攻 森本研究室 助教
2026年05月 - 京都大学大学院理学研究科 相関設計物理学特別講座 特定講師

Theses

Ph.D thesis:
“Theoretical study of exotic quantum phases in periodically-driven systems”
(周期駆動系における新奇量子相の理論的研究)
Adviser: Prof. Hideo Aoki (2014-2015), Prof. Shinji Tsuneyuki (2016)

Master thesis:
“First principles band calculation for cold atom systems in optical lattices”
(光学格子上の冷却原子系に対する第一原理バンド計算)
Adviser: Prof. Hideo Aoki

Publications

  1. Y. Dong, S. Kitamura, Y. M. Itahashi, D. G. Chica, S. Toyoda, K. Watanabe, T. Taniguchi, M. Tanaka, X. Roy, N. Ogawa, T. Morimoto, Y. Iwasa, and T. Ideue:
    “Layer photovoltaic effect in a two-dimensional antiferromagnet with parity-time symmetry”,
    Nat. Mater. (2026).
    [プレスリリース]

  2. Takahiro Anan, Sota Kitamura, and Takahiro Morimoto:
    “Nonreciprocal current induced by dissipation in time-reversal symmetric systems”,
    arXiv:2604.04520.

  3. Daemo Kang, Sota Kitamura, and Takahiro Morimoto:
    “Quantum Optical Spanner: Twisting Superconductors with Vortex Beam via Higgs Mode”,
    Phys. Rev. B 112, 214315 (2025).
    [arXiv]

  4. Kosuke Tazuke, Takahiro Morimoto, and Sota Kitamura:
    “Formulation of the orbital magnetic moment in multiorbital tight-binding models: Application to the inverse Faraday effect”,
    Phys. Rev. B 112, 155134 (2025).
    [arXiv]

  5. Ibuki Terada, Sota Kitamura, Hiroshi Watanabe, and Hiroaki Ikeda:
    “Problem of Nonlinear Conductivity within Relaxation Time Approximation in Noncentrosymmetric Insulators”,
    Phys. Status Solidi B 2025, 2400533 (2025).
    [arXiv]

  6. Ibuki Terada, Sota Kitamura, Hiroshi Watanabe, and Hiroaki Ikeda:
    “Multitunneling effect of nonreciprocal Landau-Zener tunneling: Insights from DC field responses”,
    Phys. Rev. B 111, 064315 (2025).
    [arXiv]

  7. Mao Yoshii, Sota Kitamura, and Takahiro Morimoto:
    “Brillouin zone folding method for quasiperiodic superconductivity in multilayer systems: Application to electronic structure and optical responses”,
    Phys. Rev. B 111, 024206 (2025).
    [arXiv]

  8. Yuya Ikeda, Sota Kitamura, and Takahiro Morimoto:
    “Controllable photocurrent generation in Dirac systems with two frequency drives”,
    Phys. Rev. B 110, 235206 (2024).
    [arXiv]

  9. Sota Kitamura and Takashi Oka:
    “Dirac Electrons in AC-Magnetic Fields: $\pi$-Landau Levels and Chiral Anomaly-Induced Homodyne Effect”,
    arXiv:2407.08115.

  10. Ibuki Terada, Sota Kitamura, Hiroshi Watanabe, and Hiroaki Ikeda:
    “Limitations and improvements of the relaxation time approximation in the quantum master equation: Linear conductivity in insulating systems”,
    Phys. Rev. B 109, L180302 (2024).
    [arXiv]

  11. Takahiro Anan, Takahiro Morimoto, and Sota Kitamura:
    “Time-dependent Gutzwiller simulation of Floquet topological superconductivity”,
    Commun. Phys. 7, 99 (2024).
    [arXiv]

  12. Yuya Ikeda, Sota Kitamura, and Takahiro Morimoto:
    “Photocurrent Induced by a Bicircular Light Drive in Centrosymmetric Systems”,
    Phys. Rev. Lett. 131, 096301 (2023).
    Editors’ Suggestion [arXiv] [Synopsis]

  13. Takahiro Morimoto, Sota Kitamura, and Naoto Nagaosa:
    “Geometric aspects of nonlinear and nonequilibrium phenomena”,
    J. Phys. Soc. Jpn. 92, 072001 (2023).
    Invited review papers [arXiv] [Movie]

  14. Mao Yoshii, Sota Kitamura, and Takahiro Morimoto:
    “Gap labeling theorem for multilayer thin film heterostructures”,
    Phys. Rev. B 107, 064201 (2023).
    [arXiv]

  15. Kosuke Fujiwara, Sota Kitamura, and Takahiro Morimoto:
    “Nonlinear spin current of photoexcited magnons in collinear antiferromagnets”,
    Phys. Rev. B 107, 064403 (2023).
    Editors’ Suggestion [arXiv]

  16. Y. Dong*, M.-M. Yang*, M. Yoshii, S. Matsuoka, S. Kitamura, T. Hasegawa, N. Ogawa, T. Morimoto, T. Ideue, and Y. Iwasa:
    “Giant bulk piezophotovoltaic effect in 3R-MoS2“,
    Nat. Nanotechnol. 18, 36 (2023).
    [プレスリリース]

  17. Kosuke Fujiwara, Sota Kitamura, and Takahiro Morimoto:
    “Thermal Hall responses in frustrated honeycomb spin systems”,
    Phys. Rev. B 106, 035113 (2022).
    [arXiv]

  18. Sota Kitamura and Hideo Aoki:
    “Floquet topological superconductivity induced by chiral many-body interaction”,
    Commun. Phys. 5, 174 (2022).
    [arXiv]

  19. Takumi Kamatani, Sota Kitamura, Naoto Tsuji, Ryo Shimano, and Takahiro Morimoto:
    “Optical response of the Leggett mode in multiband superconductors in the linear response regime”,
    Phys. Rev. B 105, 094520 (2022).
    [arXiv]

  20. Yuya Ikeda, Sota Kitamura, and Takahiro Morimoto:
    “Floquet engineering of electric polarization with two-frequency drive”,
    Prog. Theor. Exp. Phys. 2022, 04A101 (2022).
    [arXiv]

  21. Mao Yoshii, Sota Kitamura, and Takahiro Morimoto:
    “Topological charge pumping in quasiperiodic systems characterized by Bott index”,
    Phys. Rev. B 104, 155126 (2021).
    Editors’ Suggestion [arXiv]

  22. Takahiro Morimoto*, Sota Kitamura*, and Shun Okumura:
    “Electric polarization and nonlinear optical effects in noncentrosymmetric magnets”,
    Phys. Rev. B 104, 075139 (2021).
    Editors’ Suggestion [arXiv]

  23. T. Akamatsu*, T. Ideue*, L. Zhou*, Y. Dong, S. Kitamura, M. Yoshii, D. Yang, M. Onga, Y. Nakagawa, K. Watanabe, T. Taniguchi, J. Laurienzo, J. Huang, Z. Ye, T. Morimoto, H. Yuan, and Y. Iwasa:
    “A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect”,
    Science 372, 68 (2021).
    [プレスリリース]

  24. Sota Kitamura, Naoto Nagaosa, and Takahiro Morimoto:
    “Current response of nonequilibrium steady states in Landau-Zener problem: Nonequilibrium Green’s function approach”,
    Phys. Rev. B 102, 245141 (2020).
    [arXiv]

  25. Sota Kitamura, Naoto Nagaosa, and Takahiro Morimoto:
    “Nonreciprocal Landau-Zener tunneling”,
    Commun. Phys. 3, 63 (2020).
    [arXiv]

  26. V. Sunko*, F. Mazzola*, S. Kitamura*, S. Khim, P. Kushwaha, O. J. Clark, M. Watson, I. Marković, D. Biswas, L. Pourovskii, T. K. Kim, T.-L. Lee, P. K. Thakur, H. Rosner, A. Georges, R. Moessner, T. Oka, A. P. Mackenzie, and P. D. C. King:
    “Probing spin correlations using angle resolved photoemission in a coupled metallic/Mott insulator system”,
    Sci. Adv. 6, eaaz0611 (2020).
    [arXiv]

  27. H. Usui, M. Ochi, S. Kitamura, T. Oka, D. Ogura, H. Rosner, M. W. Haverkort, V. Sunko, P. D. C. King, A. P. Mackenzie, and K. Kuroki:
    “Hidden Kagome-lattice picture and origin of high conductivity in delafossite PtCoO2“,
    Phys. Rev. Mat. 3, 045002 (2019).
    Editors’ Suggestion [arXiv]

  28. Takashi Oka and Sota Kitamura:
    “Floquet Engineering of Quantum Materials”,
    Ann. Rev. Cond. Mat. Phys. 10, 387-408 (2019).
    [arXiv]

  29. S. Kitamura, H. Usui, R.-J. Slager, A. Bouhon, V. Sunko, H. Rosner, P. D. C. King, J. Orenstein, R. Moessner, A. P. Mackenzie, K. Kuroki, and T. Oka:
    “Spin Hall effect in 2D metallic delafossite PtCoO2 and vicinity topology”,
    arXiv:1811.03105.

  30. Chanchal Sow, Shingo Yonezawa, Sota Kitamura, Takashi Oka, Kazuhiko Kuroki, Fumihiko Nakamura, and Yoshiteru Maeno:
    “Current-induced strong diamagnetism in the Mott insulator Ca2RuO4“,
    Science 358, 1084-1087 (2017).
    [arXiv] This article has been retracted: see Science 368, 376 (2020)

  31. Leda Bucciantini, Sthitadhi Roy, Sota Kitamura, and Takashi Oka:
    “Emergent Weyl nodes and Fermi arcs in a Floquet Weyl semimetal”,
    Phys. Rev. B 96, 041126(R) (2017).
    [arXiv]

  32. Sota Kitamura, Takashi Oka, and Hideo Aoki:
    “Probing and controlling spin chirality in Mott insulators by circularly polarized laser”,
    Phys. Rev. B 96, 014406 (2017).
    [arXiv]

  33. Sota Kitamura and Hideo Aoki:
    ”$\eta$-pairing superfluid in periodically-driven fermionic Hubbard model with strong attraction”,
    Phys. Rev. B 94, 174503 (2016).
    [arXiv]

  34. Takahiro Mikami, Sota Kitamura, Kenji Yasuda, Naoto Tsuji, Takashi Oka, and Hideo Aoki:
    “Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators”,
    Phys. Rev. B 93, 144307 (2016).
    [arXiv] [Erratum]

  35. Sota Kitamura, Naoto Tsuji, and Hideo Aoki:
    “Interaction-Driven Topological Insulator in Fermionic Cold Atoms on an Optical Lattice: A Design with a Density Functional Formalism”,
    Phys. Rev. Lett. 115, 045304 (2015).
    [arXiv]

和文解説

  1. 北村想太, 青木秀夫:
    “円偏光で誘起するトポロジカル超伝導の理論――非平衡での強相関効果”,
    日本物理学会誌 78, 404 (2023)

  2. 北村想太: “周期駆動量子系の物理”,
    物性若手夏の学校テキスト 1, 81 (2023).
    [板書]

担当講義