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Spectroscopic investigation for optical generation/control of surface spincurrent

Research Project

Project/Area Number 18H01875
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

ARAFUNE Ryuichi  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 主任研究員 (50360483)

Co-Investigator(Kenkyū-buntansha) 高木 紀明  京都大学, 人間・環境学研究科, 教授 (50252416)
石田 浩  日本大学, 文理学部, 教授 (60184537)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Keywords表面分光 / レーザー / スピン軌道相互作用 / 非占有状態 / 二光子光電子分光 / 光励起スピン流 / レーザー光電子分光 / 非占有準位 / モアレ構造 / 非占有順位 / オプト・スピントロニクス
Outline of Final Research Achievements

The electronic structure of occupied and unoccupied states on solid surfaces were investigated by using laser photoelectron spectroscopy to study the nature of the photo-excited spin current and the effect of spin-orbit coupling. Graphene/Ir(111) was the main target of the measurements, and the image charge band, which is a typical example of the surface unoccupied state, was measured in detail.

On the theoretical side, we further developed the embedded Green function method. It is now possible to take into account spin-orbit interactions. Moreover we have been enable to calculate the electronic band structure of semi-infinite solid crystal surfaces even for relatively large unit cells including moire systems.

Academic Significance and Societal Importance of the Research Achievements

(光励起)スピン流研究の多くは、(正/逆)スピンホール効果に由来した伝導測定を用いた研究である。本研究はそれらの研究に対して分光学的側面から解明を目指したものであり、補完的な情報を提供できる。光励起状態はフェムト・ピコ秒オーダーの本質的に超高速現象であり、短パルスレーザーを用いる本手法は光励起スピン流の本質に直接アプローチ可能なものである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (15 results)

All 2021 2020 2019 2018

All Journal Article (9 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 5 results,  Invited: 6 results)

  • [Journal Article] In Situ Study of Molecular Doping of Chlorine on MoS2 Field Effect Transistor Device in Ultrahigh Vacuum Conditions2020

    • Author(s)
      Trung Nguyen Tat、Hossain Mohammad Ikram、Alam Md Iftekharul、Ando Atsushi、Kitakami Osamu、Kikuchi Nobuaki、Takaoka Tsuyoshi、Sainoo Yasuyuki、Arafune Ryuichi、Komeda Tadahiro
    • Journal Title

      ACS Omega

      Volume: 5 Issue: 43 Pages: 28108-28115

    • DOI

      10.1021/acsomega.0c03741

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Scanning tunneling spectroscopy studies of topological materials2020

    • Author(s)
      C.-L. Lin, N. Kawakami, R. Arafune, E. Minamitani, N. Takagi
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 32 Issue: 24 Pages: 243001-243001

    • DOI

      10.1088/1361-648x/ab777d

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First-principles calculation of the graphene Dirac band on semi-infinite Ir(111)2020

    • Author(s)
      H Ishida, R Arafune, N Takagi
    • Journal Title

      Phys. Rev. B

      Volume: 102 Issue: 19 Pages: 195425-195425

    • DOI

      10.1103/physrevb.102.195425

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced magnetic spin-spin interactions observed between porphyrazine derivatives on Au(111)2020

    • Author(s)
      Hou Jie, Wang Yu, Eguchi Keitaro, Nanjo Chihiro, Takaoka Tsuyoshi, Sainoo Yasuyuki, Arafune Ryuichi, Awaga Kunio, Komeda Tadahiro
    • Journal Title

      COMMUNICATIONS CHEMISTRY

      Volume: 3 Issue: 1 Pages: 36-36

    • DOI

      10.1038/s42004-020-0282-5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Unsubstituted and Fluorinated Copper Phthalocyanine Overlayers on Si(111)-(√7 × √3)-In Surface: Adsorption Geometry, Charge Polarization, and Effects on Superconductivity2019

    • Author(s)
      Sumi Naoya、Yamada Yoichi、Sasaki Masahiro、Arafune Ryuichi、Takagi Noriaki、Yoshizawa Shunsuke、Uchihashi Takashi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 123 Issue: 14 Pages: 8951-8958

    • DOI

      10.1021/acs.jpcc.8b12424

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanically Tunable Spontaneous Vertical Charge Redistribution in Few-Layer WTe22019

    • Author(s)
      Ni Zeyuan、Minamitani Emi、Kawahara Kazuaki、Arafune Ryuichi、Lin Chun-Liang、Takagi Noriaki、Watanabe Satoshi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 124 Issue: 3 Pages: 2008-2012

    • DOI

      10.1021/acs.jpcc.9b10423

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spin-orbit interaction in unoccupied surface states2018

    • Author(s)
      Arafune Ryuichi、Takagi Noriaki、Ishida Hiroshi
    • Journal Title

      Progress in Surface Science

      Volume: 93 Issue: 4 Pages: 177-188

    • DOI

      10.1016/j.progsurf.2018.08.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quasiparticle scattering in type-II Weyl semimetal MoTe22018

    • Author(s)
      C.-L. Lin, R. Arafune, E. Minamitani, M. Kawai, N. Takagi
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 30 Issue: 10 Pages: 105703-105703

    • DOI

      10.1088/1361-648x/aaab95

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inelastic electron tunneling spectroscopy by STM of phonons at solid surfaces and interfaces2018

    • Author(s)
      E. Minamitani, N. Takagi, R. Arafune, T. Frederiksen, T. Komeda, H. Ueba, S. Watanabe
    • Journal Title

      Prog. Surf. Sci.

      Volume: 93 Issue: 4 Pages: 131-145

    • DOI

      10.1016/j.progsurf.2018.09.002

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 高分解能二光子光電子分光を用いた表面研究2021

    • Author(s)
      荒船竜一
    • Organizer
      日本レーザー学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Spectroscopic Investigation of Opto-spincurrent Control2019

    • Author(s)
      荒船竜一
    • Organizer
      Ultrafast surface dynamcs
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spectroscopic Demonstration of Opto-spincurrent Control: High resolution two photon photoemission2018

    • Author(s)
      R. Arafune
    • Organizer
      The 3rd International Conference on Emerging Advanced Nanomaterials
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Band splitting due to spin orbit interaction in image potential states2018

    • Author(s)
      R. Arafune
    • Organizer
      International Symposium on Spectroscopy and Dynamics at Surface and Interface
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 鏡像準位のスピンテクスチャと表面スピン流の光制御2018

    • Author(s)
      荒船竜一
    • Organizer
      極限コヒーレント光科学セミナー
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 非占有状態におけるラシュバ分裂2018

    • Author(s)
      荒船竜一
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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