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J-GLOBAL ID：201501015588261852   Update date: May. 08, 2024

Takahashi Kei

タカハシ ケイ | Takahashi Kei
Affiliation and department：
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

About 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


Job title： 上級研究員
Homepage URL  (1)： https://www.cems.riken.jp/jp/laboratory/scirg
Research field  (4)： Magnetism, superconductivity, and strongly correlated systems ,  Electronic devices and equipment ,  Crystal engineering ,  Applied materials
Research keywords  (4)： 強相関エレクトロニクス ,  量子ホール効果 ,  酸化物薄膜 ,  トポロジカル絶縁体
Research theme for competitive and other funds  (7)：
  • 2023 - 2026 二次元Mott絶縁体人工構造による新奇電子相探索
  • 2018 - 2021 Quantum transport phenomena of ferromagnetic two dimensional electron system by gas source MBE films
  • 2015 - 2019 高移動度二次元酸化物構造による非散逸電流デバイスの創成
  • 2015 - 2016 デルタドープ型SrTiO3二次元電子によるd電子系量子ホール効果の研究
  • 2015 - 2016 New approach of thermoelectric research of chalcogenide superlattices
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Papers (77)：
  • Tsubasa Takagi, Ryota Watanabe, Ryutaro Yoshimi, Atsushi Tsukazaki, Kei S. Takahashi, Masashi Kawasaki, Yoshinori Tokura, Naoki Ogawa. Photogalvanic spectroscopy on MnBi2Te4 topological insulator thin films. Applied Physics Letters. 2024. 124. 16
  • Yuki Sato, Soma Nagahama, Ilya Belopolski, Ryutaro Yoshimi, Minoru Kawamura, Atsushi Tsukazaki, Naoya Kanazawa, Kei S. Takahashi, Masashi Kawasaki, Yoshinori Tokura. Molecular beam epitaxy of superconducting FeSexTe1-x thin films interfaced with magnetic topological insulators. Physical Review Materials. 2024. 8. 4
  • H. Handa, Y. Okamura, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, Y. Tokura, Y. Takahashi. Terahertz field driven giant nonlinear phonon response in ferroelectric semiconductor In-doped (Sn,Pb)Te. Physical Review B. 2024. 109. 8
  • Gate-electric-field and magnetic-field control of versatile topological phases in a semi-magnetic topological insulator. Appl.Phys.Lett. 2023. 123. 183102-1-183102-6
  • D. Maryenko, I. V. Maznichenko, S. Ostanin, M. Kawamura, K. S. Takahashi, M. Nakamura, V. K. Dugaev, E. Ya. Sherman, A. Ernst, M. Kawasaki. Superconductivity at epitaxial LaTiO3-KTaO3 interfaces. APL MATERIALS. 2023. 11. 6
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MISC (22)：
  • 岡崎雄馬, 大江武彦, 川村稔, 吉見龍太郎, 中村秀司, 高田真太郎, 茂木将孝, 高橋圭, 塚崎敦, 川崎雅司, et al. Universality of quantum anomalous Hall effect in magnetic topological insulator Cr(Bi, Sb)2Te3 toward resistance standard. 日本物理学会講演概要集(CD-ROM). 2020. 75. 2
  • Yoshimi Ryutaro, Mogi Masataka, Tsukazaki Atsushi, Kozuka Yusuke, Takahashi Kei, Kawasaki Masashi, Tokura Yoshinori. Towards the observation of domain-wall conduction in magnetic topological insulator Crx(Bi1-ySby)2-xTe3 thin films. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1187-1187
  • Okada K. N., Takahashi Y., Yoshimi R., Mogi M., Tsukazaki A., Takahashi K. S., Ogawa N., Kawasaki M., Tokura Y. 22aBA-7 Terahertz magneto-optical responses in a quantized anomalous Hall state on a magnetic topological insulator thin film. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1416-1416
  • Mogi M., Yoshimi R., Tsukazaki A., Yasuda K., Kozuka Y., Takahashi K. S., Kawasaki M., Tokura Y. 22aBA-6 Higher-temperature quantum anomalous Hall effect in magnetic modulation-doped topological insulators. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1415-1415
  • Yasuda K., Tsukazaki A., Yoshimi R., Takahashi K. S., Kawasaki M., Tokura Y. 21pBC-6 Unidirectional magnetoresistance of topological insulator heterostructure. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1261-1261
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Lectures and oral presentations  (10)：
  • Quantum transport of spin polarized electrons in EuTiO3 films grown by gas source MBE
    (2021 APS March Meeting (On-line meeting) 2021)
  • Quantum transport of spin polarized electrons in EuTiO3 films
    (OSS (Oxide Superspin) Workshop 2019 2019)
  • Quantum transport in magnetic semiconductor EuTiO3 films
    (2019 MRS SPRING MEETING 2019)
  • ガスソース分子線エピタキシーで創る酸化物量子物性
    (ポスト新機能物質開発のための戦略会議 2017)
  • ガスソースMBEで作製した高品質遷移金属酸化物人工格子の新物性
    (第4回酸化物研究の新機軸に向けた学際討論会 2016)
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Education (4)：
  • 1999 - 2002 The University of Tokyo
  • 1997 - 1999 The University of Tokyo
  • 1993 - 1997 The University of Tokyo The Faculty of Engineering Department of Applied Chemistry
  • 1989 - 1992 茨城県立土浦第一高等学校
Professional career (1)：
  • Dr. (Engineering)
Work history (7)：
  • 2013/04 - 現在 RIKEN Center for Emergent Matter Science Strong Correlation Interface Research Group Senior Research Scientist
  • 2015/10 - 2019/03 科学技術振興事業団戦略的創造研究事業さきがけ 研究員兼任
  • 2010/06 - 2013/03 RIKEN
  • 2007/10 - 2010/05 RIKEN
  • 2007/04 - 2007/10 東京大学大学院新領域創成科学科 Hwang研究室 日本学術振興会特別研究員
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Awards (4)：
  • 2021/04 - CEMS AWARD Exploration of novel quantum transport phenomena in oxide heterostructures fabricated with an originally-developed molecular beam epitaxy system
  • 2019/11 - International workshop on oxide electronics IWOE-26 conference prize for best poster presentation
  • 2015/05 - Nature publishing group Nature Physics Poster Prize
  • 2014/10 - IWOE-21 Best Speaker Award
Association Membership(s) (2)：
THE PHYSICAL SOCIETY OF JAPAN ,  THE JAPAN SOCIETY OF APPLIED PHYSICS
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