Details of the Researcher

PHOTO

Takuya Takashiro
Section
Graduate School of Science
Job title
Assistant Professor
Degree
  • Doctor of Philosophy (Department of Physics, Faculty of Science & Graduate School of Science, The University of Tokyo)

e-Rad No.
71035045

Research History 3

  • 2025/12/01 - Present
    Tohoku University Department of Physics, Graduate School of Science Assistant professor

  • 2025/04/01 - 2025/11/30
    Johannes Kepler University Linz Institute of Semiconductor and Solid State Physics Post-doc researcher

  • 2023/04/01 - 2025/03/31
    Johannes Kepler University Linz Institute of Semiconductor and Solid State Physics JSPS Overseas Research Fellowships

Education 3

  • The University of Tokyo Graduate School of Science

    2020/04/01 - 2023/03/31

  • The University of Tokyo Graduate School of Science

    2018/04/01 - 2020/03/31

  • The University of Osaka School of Engineering

    2014/04/01 - 2018/03/31

Professional Memberships 3

  • 日本応用物理学会

    2024/01 - Present

  • 日本物理学会

    2018/09 - Present

  • 日本表面真空学会

    2018/05 - Present

Research Interests 13

  • Strongly correlated electron systems

  • Halide

  • Angle resolved photoemission spectroscopy

  • Surface sicence

  • Spintronics

  • Ultra-high vacuum techniques

  • Low dimensional materials

  • Ferroelectricity

  • Magnetism

  • Topological Insulators

  • Epitaxial growth

  • Thin Films

  • Semiconductors

Research Areas 1

  • Natural sciences / Semiconductors, optical and atomic physics /

Awards 1

  1. 第8回応用物理学 薄膜・表面物理分科会論文賞

    Soft-Magnetic Skyrmions Induced by Surface-State Coupling in an Intrinsic Ferromagnetic Topological Insulator Sandwich Structure

Papers 4

  1. Beyond Superexchange: Emergent Unconventional Ferromagnetism in Thin-Film Sandwich Structures of Intrinsic Magnetic Topological Insulators International-journal

    Takuya Takashiro, Ryota Akiyama, Ryotaro Minakawa, Shuji Hasegawa

    arXiv:2508.14993 2025/08/20

  2. Valley-Polarized Quantum Hall Phase in a Strain-Controlled Dirac System International-journal Peer-reviewed

    Gauthier Krizman, Joaquin Bermejo-Ortiz, Tetiana Zakusylo, Mahdi Hajlaoui, Takuya Takashiro, Marcin Rosmus, Natalia Olszowska, Jacek J. Kołodziej, Günther Bauer, Yves Guldner, Gunther Springholz, Louis-Anne de Vaulchier

    Physical Review Letters 132 166601 2024/04/16

    Publisher: APS Journals

    DOI: 10.1103/PhysRevLett.132.166601  

  3. A Novel Ferroelectric Rashba Semiconductor International-journal Peer-reviewed

    Gauthier Krizman, Tetiana Zakusylo, Lakshmi Sajeev, Mahdi Hajlaoui, Takuya Takashiro, Marcin Rosmus, Natalia Olszowska, Jacek J. Kołodziej, Günther Bauer, Ondrej Caha, Gunther Springholz

    Advanced Materials 36 (13) 2310278 2023/12/15

    Publisher: Wiley

    DOI: 10.1002/adma.202310278  

  4. Soft-Magnetic Skyrmions Induced by Surface-State Coupling in an Intrinsic Ferromagnetic Topological Insulator Sandwich Structure International-journal Peer-reviewed

    Takuya Takashiro, Ryota Akiyama, Ivan A. Kibirev, Andrey V. Matetskiy, Ryosuke Nakanishi, Shunsuke Sato, Takuro Fukasawa, Taisuke Sasaki, Haruko Toyama, Kota L. Hiwatari, Andrey V. Zotov, Alexander A. Saranin, Toru Hirahara, Shuji Hasegawa

    Nano Letters 22 (3) 881 2022/01/27

    Publisher: ACS Publications

    DOI: 10.1021/acs.nanolett.1c02952  

Misc. 3

  1. 強磁性トポロジカル絶縁体を用いた超薄膜における新奇磁気構造の発見

    高城拓也

    表面と真空 67 132 2024/03/01

    Publisher: 日本表面真空学会

  2. トポロジカル絶縁体と強磁性の協奏効果

    秋山了太,高城拓也,黒田眞司,長谷川修司

    表面と真空 66 28 2023/01/01

    Publisher: 日本表面真空学会

  3. 自己形成型強磁性層を持つトポロジカル絶縁体によるサンドイッチ構造での軟磁性スキルミオンの電気的観測

    高城拓也,秋山了太,Ivan A. Kibirev,Andrey V. Matetskiy, 中西亮介, 佐藤瞬亮, 深澤拓朗, 佐々木泰祐, 遠山晴子, 樋渡功太,Andrey V. Zotov,Alexander A. Saranin, 平原徹, 長谷川修司

    表面と真空 65 405 2022/09/01

    Publisher: 日本表面真空学会

Presentations 24

  1. Novel Quantum Properties Arising from Symmetry Breaking in Topological Materials Invited

    Takuya Takashiro

    Seminars in the Topological Quantum Chemistry Department (Max Plank Institute) 2025/09/08

  2. Emerging Frontiers in Condensed Matter Physics:Topological Insulators and Beyond Invited

    Takuya Takashiro

    Seminar in Institute of Science and Technology Austria 2025/02/20

  3. Structural, Magnetic and Electronic Properties of highly Mn-doped Magnetic Topological Insulator (Bi1-xMnx)2Te­3 International-presentation

    T. Takashiro, M. Hajlaoui, S. Wimmer, O. Caha, A. Ney, G. Krizman, T. Zakusylo, L. Sajeev, M. Rosmus, N. Olszowska, D. Wutke, G. Bauer, and G. Springholz

    23rd International Winterschool New Developments in Solid State Physics 2025/02/12

  4. Magnetic and tornasport properties In ultra-thin films containing intrinsic magnetic topological insulators Mn(Bi1-xSbx)2Te4 International-presentation

    T. Takashiro, R. Akiyama, R. Minakawa, S. Hasegawa

    The 23rd International Conference on Molecular Beam Epitaxy 2024/09/12

  5. 真性強磁性トポロジカル絶縁体を用いたサンドイッチ構造超薄膜で実現したカイラルスピン誘起スキルミオン Invited

    高城拓也,秋山了太,I. A. Kibirev, A. V. Matetskiy,中西亮介, 佐藤瞬亮, 平原徹, 深澤拓朗, 佐々木泰祐, 遠山晴子, 樋渡功太, A. V. Zotov,A. A. Saranin,長谷川修司

    第71回応用物理学会春季学術講演会 2024/03/25

  6. Electrical Observation of Skyrmions in the Sandwich Structure Incorporating Intrinsic Ferromagnetic Topological Insulator International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, R. Nakanishi, S. Sato, T. Fukasawa, T. Sasaki, H. Toyama, K. L. Hiwatari, A. V. Zotov, A. A. Saranin, T. Hirahara, S. Hasegawa

    DPG Spring Meeting 2024/03/21

  7. 真性強磁性トポロジカル絶縁体を含む原子層サンドイッチ構造におけるスキルミオンの電気的観測 Invited

    高城拓也

    量子物理学・ナノサイエンス第85回特別セミナー 2023/03/10

  8. Soft-magnetic skyrmions induced by surface-state coupling in a sandwich structure with an intrinsic ferromagnetic topological insulator International-presentation

    T. Takashiro

    2nd International Symposium on Trans-Scale Quantum Science 2022/11/08

  9. Soft-magnetic skyrmions induced by surface-state coupling in a sandwich structure with an intrinsic ferromagnetic topological insulator International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, R. Nakanishi, S. Sato, T. Fukasawa, T. Sasaki, H. Toyama, K. L. Hiwatari, A. V. Zotov, A. A. Saranin, T. Hirahara, S. Hasegawa

    The 92nd IUVSTA workshop on Advanced Spectroscopy and Transport for 2D Materials at Surfaces and The 4th Asia-Pacific Symposium on Solid Surfaces (APSSS-4) 2022/09/19

  10. 自己形成型真性トポロジカル強磁性体Mn(Bi1-xSbx)2Te4における面間・面内磁気相互作用のSb/Bi比率依存性

    高城拓也,秋山了太,長谷川修司

    2022年日本物理学会秋季大会 2022/09/14

  11. 原子層自己形成型強磁性トポロジカル絶縁体MnSb2Te4およびそのヘテロ構造の磁気・電気伝導特性

    高城拓也,秋山了太,長谷川修司

    2022年日本物理学会春季大会 2022/03/16

  12. Soft-magnetic skyrmions induced by surface-state coupling in a sandwich structure with an intrinsic ferromagnetic topological insulator International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, R. Nakanishi, S. Sato, T. Fukasawa, T. Sasaki, H. Toyama, K. L. Hiwatari, A. V. Zotov, A. A. Saranin, T. Hirahara, S. Hasegawa

    International Symposium on Novel maTerials and quantum Technologies (ISNTT 2021) 2021/12/14

  13. Soft-magnetic skyrmions induced by surface-state coupling in a sandwich structure with an intrinsic ferromagnetic topological insulator International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, R. Nakanishi, S. Sato, T. Fukasawa, T. Sasaki, H. Toyama, K. L. Hiwatari, A. V. Zotov, A. A. Saranin, T. Hirahara, S. Hasegawa

    The 9th International Symposium on Surface Science (ISSS-9) 2021/12/01

  14. 自己形成型強磁性トポロジカル絶縁体Mn(Bi1-xSbx)2Te4/(Bi1-xSbx)2Te3における強磁性のBi/Sb組成比依存性

    高城拓也,秋山了太,長谷川修司

    2021年日本物理学会秋季大会 2021/03/11

  15. 自己形成型強磁性トポロジカル絶縁体を含むサンドイッチ構造におけるスキルミオンの電気的観測

    高城拓也,秋山了太,I. A. Kibirev, A. V. Matetskiy,中西亮介, 佐藤瞬亮, 平原徹, 深澤拓朗, 佐々木泰祐, 宝野和博, 遠山晴子, 樋渡功太, A. V. Zotov,A. A. Saranin,長谷川修司

    第12回低温科学研究センター研究交流会 2021/03/11

  16. 磁性/非磁性/磁性トポロジカル絶縁体サンドイッチ構造における磁気スキルミオンの電気的観測

    高城拓也,秋山了太,I. A. Kibirev, A. V. Matetskiy, 遠山晴子,中西亮介, 樋渡功太, 平原徹, 深澤拓朗, A. V. Zotov,A. A. Saranin,長谷川修司

    2020年日本表面真空学会学術講演会 2020/11/20

  17. Electrical observation of magnetic skyrmions in ferromagnetic topological insulator Mn(Bi1-xSbx)2Te4/(Bi1-xSbx)2Te3/Mn(Bi1-xSbx)2Te4 International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, H. Toyama, R. Nakanishi, K. Hiwatari, T. Hirahara, T. Fukasawa, A. V. Zotov, A. A. Saranin and S. Hasegawa

    Summer School of the IMPRS & MPI-UBC-UTokyo Center for Quantum Materials 2020/09/29

  18. 強磁性トポロジカル絶縁体サンドイッチ構造Mn(Bi1-xSbx)2Te4/(Bi1-xSbx)2Te3/Mn(Bi1-xSbx)2Te4/Si(111)のフェルミ準位制御による電気伝導特性変調

    高城拓也,秋山了太,I. A. Kibirev, A. V. Matetskiy, 遠山晴子,中西亮介, 樋渡功太, 平原徹, 深澤拓朗, A. V. Zotov,A. A. Saranin,長谷川修司

    日本物理学会2020年秋季大会 2020/09/09

  19. 室温強磁性トポロジカル絶縁体MnTe/(Bi1-xSbx)2Te3の電気伝導特性

    高城拓也, 秋山了太,I. A. Kibirev, A. V. Matetskiy, 遠山晴子, 中西亮介,樋渡功太,A. V. Zotov, A. A. Saranin,長谷川修司

    2019年日本表面真空学会学術講演会 2019/10/30

  20. 室温強磁性トポロジカル絶縁体MnTe/(Bi1-xSbx)2Te3の電気伝導特性

    高城拓也, 秋山了太,I. A. Kibirev, A. V. Matetskiy, 遠山晴子, 中西亮介,樋渡功太,A. V. Zotov, A. A. Saranin,長谷川修司

    2019年度日本物理学会秋季大会 2019/09/11

  21. Fabrication and Evaluation of High TC Ferromagnetic/Topological Insulator Heterojunction MnTe/(Bi­1-xSbx)2Te3 International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, H. Toyama, K. Hiwatari, R. Nakanishi, A. V. Zotov, A. A. Saranin and S. Hasegawa

    New Trends in Topological Insulators 2019 (NTTI2019) 2019/07/15

  22. 磁性トポロジカル絶縁体ヘテロ構造MnTe/(Bi1-xSbx)2Te3の作製とその評価

    高城拓也, 秋山了太, I. A. Kibirev, A. V. Matetskiy, 遠山晴子, A. V. Zotov, A. A. Saranin, 長谷川修司

    2019年度表面真空学会関東支部学術講演会 2019/04/13

  23. 磁性トポロジカル絶縁体ヘテロ構造MnTe/(Bi1-xSbx)2Te3の作製とその評価

    高城拓也, 秋山了太, I. A. Kibirev, A. V. Matetskiy, 遠山晴子, A. V. Zotov, A. A. Saranin, 長谷川修司

    日本物理学会第74回年次大会 2019/03/17

  24. Fabrication and Evaluation of Magnetic Topological Insulator Heterostructure MnTe/(Bi1-xSbx)2Te3 International-presentation

    T. Takashiro, R. Akiyama, I. A. Kibirev, A. V. Matetskiy, H. Toyama, A. V. Zotov, A. A. Saranin and S. Hasegawa

    Topological Phases and Functionality of Correlated Electron Systems(TPFC2019) 2019/02/19

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Research Projects 2

  1. 強磁性付与されたトポロジカル結晶絶縁体における新奇量子異常ホール効果の探索 Other

    高城拓也

    Offer Organization: 日本表面真空学会

    System: 日本学術振興会海外特別研究員

  2. 自己形成型内因性トポロジカル強磁性体の高温量子異常ホール効果の実現 Other

    高城拓也

    Offer Organization: 科学技術振興機構

    System: 次世代研究者挑戦的研究プログラム(SPRING)

Teaching Experience 1

  1. 物理学実験Ⅱ 東北大学 Undergraduate (specialized)