Rchr
J-GLOBAL ID:201201058045722076   Update date: Jan. 31, 2024

Ryota Akiyama

アキヤマ リョウタ | Ryota Akiyama
Affiliation and department:
Job title: 助教
Research field  (4): Thin-film surfaces and interfaces ,  Electronic devices and equipment ,  Magnetism, superconductivity, and strongly correlated systems ,  Nanostructure physics
Research keywords  (12): semiconductor ,  ultra high vacuum ,  Molecular beam epitaxy ,  topological insulator ,  graphene ,  low-dimensional materials ,  Surface science ,  Neutron scattering ,  Angle resolved photoemission spectroscopy ,  Scanning tunnel microscopy ,  Spintronics ,  Magnetism
Research theme for competitive and other funds  (20):
  • 2023 - 2026 強磁場サイクロトロン共鳴によるBiSbトポロジカル表面状態の検出
  • 2022 - 2026 高キュリー/ネール温度の原子層磁性体の開拓と量子異常ホール効果の高温化
  • 2023 - 2025 軽元素添加によって実現する界面超伝導の転移温度高温化
  • 2022 - 2025 Control of spin-orbit torque in topological crystalline insulator (Pb,Sn)Te and its application
  • 2020 - 2025 Control of single spin state by lattice strain and phonon-mediated spin-spin interaction
Show all
Papers (34):
  • Ibuki Taniuchi, Ryota Akiyama, Rei Hobara, Shuji Hasegawa. Surface Circular Photogalvanic Effect in Tl-Pb Monolayer Alloys on Si(111) with Giant Rashba Splitting. arXiv. 2023. 2308.02485
  • Kobayashi, Takahiro, Toichi, Yuichiro, Yaji, Koichiro, Nakata, Yoshitaka, Yaoita, Yuchi, Iwaoka, Mutsuki, Koga, Mariko, Zhang, Yituo, Fujii, Jun, Ono, Shimpei, et al. Revealing the Hidden Spin-Polarized Bands in a Superconducting Tl Bilayer Crystal. Nano Letters. 2023. 23. 16. 7675-7682
  • Yukihiro Endo, Xue Yan, Meng Li, Ryota Akiyama, Christian Brandl, Jefferson Zhe Liu, Rei Hobara, Shuji Hasegawa, Weishi Wan, K. S. Novoselov, et al. Dynamic topological domain walls driven by lithium intercalation in graphene. Nature Nanotechnology. 2023
  • Ryota Akiyama, Takuya Takashiro, Shinji Kuroda, Shuji Hasegawa. Concerted effects of topological insulators and ferromagnetism. Vacuum and Surface Science. 2023
  • Haruko Toyama, Ryota Akiyama, Shuji Hasegawa. Novel superconductivity of graphene induced by Ca-intercalation. Solid State Physics. 2022
more...
MISC (18):
  • Endo Yukihiro, Ichinokura Satoru, Suzuki Katsuaki, Sugawara Katsuaki, Akiyama Ryota, Takayama Akari, Nomura Kentaro, Takahashi takashi, Hasegawa syuji. Transport property of bilayer graphene on SiC crystal and the influence of Li intercalation. Abstract of annual meeting of the Surface Science of Japan. 2016. 36. 443-443
  • Akiyama Ryota, Sumida Kazuki, Ichinokura Satoru, Kimura Akio, Kokh Konstantin, Tereshchenko Oleg, Hasegawa Shuji. 19pPSA-42 The measurements of the quantum oscillation and the quantum transport in (Bi_xSb_<1-x>)_2Te_3. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 2545-2545
  • Endo Y., Ichinokura S., Suzuki K., Sugawara K., Akiyama R., Takayama A., Takahashi T., Hasegawa S. 19pPSA-31 Transport property of bilayer graphene studied by in situ four-point probe resistance measurements. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 2535-2535
  • Fukui N., Hobara R., Takayama A., Akiyama R., Hasegawa S. 19aAJ-12 In situ Measurements of Transport Properties in Topological Insulators with Atomic Steps. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 2478-2478
  • 21pPSB-43 Magnetic properties of (Sn,Mn)Te thin films grown by MBE. Meeting Abstracts of the Physical Society of Japan. 2016. 71. 1396-1396
more...
Patents (3):
  • 岩塩型構造を持つ化合物の単結晶薄膜及びその製造方法
  • Single crystal thin films of alloys having a NaCl structure and their fabrication methods
  • 磁気トンネル接合素子及び磁気メモリ
Books (5):
  • 東京大学理学部ニュース研究最前線「Ca原子を挿入したグラフェンで新奇な超伝導」
    東京大学理学部 2022
  • 室温強磁性トポロジカル磁性絶縁体MnTe/(Bi,Sb)2Te3における量子異常ホール効果観測にむけて
    低温センター年報 Annual report 2018 研究ノート, p.11-15 2019
  • トポロジカル結晶絶縁体SnTeとFeヘテロ界面における強磁性proximity効果の検証
    CROSS季刊誌「四季」p6-7, Vo.39 2018
  • Magnetic and transport properties of Mn-doped magnetic semiconductors: Influence of structural homogeneity and inhomogeneity
    2012
  • 工作ニュース「工作部門を利用して」
Lectures and oral presentations  (8):
  • 中性子散乱とμSRを用いたβ”-LiFeO2における磁性観測:短距離スピン相関と超常磁性的性質
    (KEK連携研究会「トポロジカル絶縁体・スピントロニクスとその周辺の話題」 2013)
  • MBEにより成長した磁性半導体(Zn,Fe)Teの構造と磁性
    (PASPS-17 2012)
  • Magnetic and transport properties of Group-IV based ferromagnetic semiconductor Ge1-xFex with Boron doping
    (2012 International Conference on Solid State Devices and Materials 2012)
  • Ge(111)基板上に成長したGe1-xMnxにおける構造と磁性: Mn濃度依存性
    (Mn doping concentration dependence of the structure and magnetism in Ge1-xMnx grown on Ge(111) substrate 2012)
  • Transport and magnetic properties of Boron-doped group-IV based ferromagnetic semiconductor Ge1-xFex
    (第73回応用物理学会学術講演会 2012)
more...
Education (2):
  • 2009 - 2012 The University of Tokyo The Graduate School of Engineering Department of Electrical Engineering and Information Systems
  • 2007 - 2009 The University of Tokyo The Graduate School of Engineering Department of Applied Physics
Professional career (1):
  • Ph.D (The University of Tokyo)
Work history (5):
  • 2014/12 - 現在 The University of Tokyo Department of Physics, Faculty of Science Assistant Professor
  • 2021/05 - 2023/03 National Institute for Materials Science Center for Magnetism and Spintronics Research Materials Visiting Researcher
  • 2014/12 - 2015/12 University of Tsukuba Faculty of Pure and Applied Sciences Guest researcher
  • 2012/04 - 2014/12 University of Tsukuba Graduate School of Pure and Applied Sciences Assistant Professor
  • 2010/04 - 2012/03 Japan Society for the Promotion of Science Research Fellowships for Young Scientists DC2
Committee career (2):
  • 2015/06 - 2019/05 日本磁気学会 企画委員
  • 2017/10 - 2018/10 日本物理学会 領域4運営委員
Awards (4):
  • 2023/12 - The Japan Society of Applied Physics The Japan Society of Applied Physics, Thin Film and Surface Physics Section Paper Award Soft Magnetic Skyrmions Induced by Surface State Coupling in an Intrinsic Ferromagnetic Topological Insulator Sandwich Structure Intrinsic Ferromagnetic Topological Insulator Sandwich Structure
  • 2023/04 - UBE Foundation for the Promotion of Science 63th Academic Encouragement Award
  • 2023/01 - 2022 Annual Meeting of the Japan Society of Vacuum and Surface Science Presentation Award (Young Researcher Category) Growth of atomically flat SnTe(001) thin films using the room temperature wetting layer method and its electrical transport measurements
  • 2010 - 東京大学低温センター 第一回東京大学低温センター成果報告会ベストプレゼンテーション賞
Association Membership(s) (4):
THE MAGNETICS SOCIETY OF JAPAN ,  THE PHYSICAL SOCIETY OF JAPAN ,  The Japan Society of Applied Physics ,  American Physical Society
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