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Frontier Spin ARPES and SXRIXS under external perturbations of functional materials

Research Project

Project/Area Number 16H03851
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials
Research InstitutionOsaka University

Principal Investigator

SUGA Shigemasa  大阪大学, 産業科学研究所, 名誉教授 (40107438)

Co-Investigator(Kenkyū-buntansha) 入澤 明典  大阪大学, 産業科学研究所, 助教 (90362756)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords光電子分光 / 光電子顕微鏡 / 角度分解光電子分光 / 共鳴X線非弾性散乱 / 放射光 / 軟X線 / 磁気円2色性(MCD) / 軟X線非弾性散乱 / 摂動磁場 / 円偏光励起 / ハーフメタル / フェルミ準位 / 発光 / スピン / 外部摂動 / 磁場 / 2次元スピンフィルター / ミクロナノ / スピン光電子 / 摂動下共鳴非弾性散乱 / スピン偏極 / スピン鏡 / 角度分解光電子 / 超高効率 / 外部磁場 / 外部電場 / スピン偏極光電子分光 / 2次元波数同時測定 / 摂動下軟X線非弾性散乱 / 電子エネルギー波数完全解明
Outline of Final Research Achievements

In order to fully utilize functional materials, full studies of electronic structures of both the surface and bulk are required. The former is tackled with the spin resolved 2 dimensional Momentum Microscopy and the latter can be tackled with the resonance inelastic soft X-ray scattering (SX-RIXS) under external perturbations.
We studied such materials as transition metal dichalcogenides as well as Kondo Insulator system of SmB6 with the 2D-MM and Scanning Tunneling Spectroscopy (STS) and half-metallic Ferrimagnetic Heusler alloy Mn2VAl by means of the SX-RIXS under the external magnetic field of H=0.25T. It is found that the behavior of the electronic structures of the SmB6 is in consistence with the Kondo topological insulators below 10 K, although the Kondo gap opens below 150 K from the metallic states.In the case of Mn2VAl, half-metallicity is confirmed by the present SX-RIXS MCD.

Academic Significance and Societal Importance of the Research Achievements

角度分解光電子分光は固体電子状態のバンド構造を知る最も有力な手段と考えられている。しかもトポロジカル絶縁体のDirac Coneのスピン偏極が知られて以来膨大なスピン偏極角度分解光電子分光が実験室や放射光施設で莫大な予算を投下して行われている。本研究で開発利用しているSP-2D-MMはそれらより約百万倍以上の測定効率があり、1台でほぼ国内全体の需要を満足する。まだ開発途上の部分もあるにせよこの装置を起爆剤として我が国での研究が世界をリードできると言う意味におい更なる研究投資が必須である。また磁場下での軟X線RIXSは完全に成功し、これは磁性体バルクや超格子などの研究の主流になったと考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (15 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 8 results,  Acknowledgement Compliant: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] Juelich Forschungszentrum(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Juelich Research Center(Germany)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Karlsruhe Institute of Technology/Max-Planck-Institute, Halle/Juelich Research Center(Germany)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Half-metallicity of the ferrimagnetic Mn2VAl revealed by resonant inelastic soft x-ray scattering in a magnetic field2019

    • Author(s)
      R.Y.Umetsu, H.Fujiwara, K.Nagai, Y.Nakatani, M.Kawada, A.Sekiyama, F.Kuroda, H.Fujii, T.Oguchi, Y.Harada, J.Miyawaki, and S.Suga
    • Journal Title

      Phys. Rev.B

      Volume: 99

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electronic Structure and Magnetic Properties of the Half-metallic Ferrimagnet Mn2VAl Probed by Soft X-ray Spectroscopies2018

    • Author(s)
      K. Nagai, H. Fujiwara, H. Aratani, S. Fujioka, H. Yomosa, Y. Nakatani, T.Kiss, A. Sekiyama, F. Kuroda, H. Fujii, T. Oguchi, A. Tanaka, J.Miyawaki, Y. Harada, Y. Takeda, Y. Saitoh, S. Suga, and R. Y. Umetsu
    • Journal Title

      Phys.Rev.B

      Volume: 97

    • NAID

      120006731610

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Interface Electronic Structure at the Topological Insulator - Ferrimagnetic Insulator Junction2017

    • Author(s)
      Y. Kubota, K. Murata, J. Miyawaki, K. Ozawa, Kenichi, M. Onbasli, T. Shirasawa, B. Feng, Sh. Yamamoto, Ro-Ya Liu, S. Yamamoto, S. Mahatha, P. Sheverdyaeva, P. Moras, C. Ross, S. Suga, Y. Harada, K. Wang, and I. Matsuda
    • Journal Title

      J. Phys. Condens. Matter

      Volume: 29 Issue: 5 Pages: 0550021-6

    • DOI

      10.1088/1361-648x/29/5/055002

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Compact Permanent Magnet System for Measuring Magnetic Circular Dichroism in Resonant Inelastic Soft X-ray Scattering2017

    • Author(s)
      Jun Miyawakia, Shigemasa Suga, Hidenori Fujiwara, Hideharu Niwa, Hisao Kiuchie, and Yoshihisa Harada
    • Journal Title

      J.Synchrotron Rad.

      Volume: 24 Issue: 2 Pages: 449-455

    • DOI

      10.1107/s1600577517000923

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Dzyaloshinskii-Moriya interaction in α-Fe2O3 measured by magnetic circular dichroism in resonant inelastic soft x-ray scattering2017

    • Author(s)
      Jun Miyawaki, Shigemasa Suga, Hidenori Fujiwara, Masato Urasaki, Hidekazu Ikeno, Hideharu Niwa, Hisao Kiuchi, and Yoshihisa Harada
    • Journal Title

      Physical Review B

      Volume: 86 Issue: 21 Pages: 2144201-9

    • DOI

      10.1103/physrevb.96.214420

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fermi surface manipulation by external magnetic field demonstrated for a prototypical thin film ferromagnet2016

    • Author(s)
      E. Mlynczak, M. Eschbach, S. Borek, J. Minar, J. Braun, I. Aguilera, G. Bihlmayer, S. Doring,  M. Gehlmann, P. Gospodaric, S. Suga, L. Plucinski, S. Blugel, H. Ebert, and C. M. Schneider
    • Journal Title

      Phys.Rev.X

      Volume: 6 Issue: 4

    • DOI

      10.1103/physrevx.6.041048

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Polarized hard X-ray photoemission system with micro-positioning technique for probing ground-sate symmetry of strongly correlated materials2016

    • Author(s)
      H. Fujiwara, S. Naimen, A. Higashiya, Y. Kanai, H. Yomosa, K. Yamagami, T. Kiss, T. Kadono, S. Imada, A. Yamasaki, K. Takase, S. Otsuka, T. Shimizu, S. Shingubara, S. Suga, M. Yabashi, K. Tamasaku, T. Ishikawa and A. Sekiyama
    • Journal Title

      J.Synchrotrn Rad.

      Volume: 23 Issue: 3 Pages: 735-742

    • DOI

      10.1107/s1600577516003003

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Momentum microscopy of SmB6 single crystals with detailed surface characterization2016

    • Author(s)
      M. Ellguth, C. Tusche, F. Iga, and S. Suga
    • Journal Title

      Philosophical Magazine

      Volume: 96 Issue: 31 Pages: 3284-3306

    • DOI

      10.1080/14786435.2016.1185185

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Momentum Microscopy of micro-nano regions of materials: 2D-simultaneous ARPES with very high efficiency spin analysis2017

    • Author(s)
      菅滋正
    • Organizer
      日本物理学会シンポジウム講演
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Full 2D-ARPES of SmB6 by means of Momentum Microscopy2017

    • Author(s)
      菅滋正
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Prospect of spin-resolved two dimensional momentum microscopy to be used up to a few keV2017

    • Author(s)
      S.Suga
    • Organizer
      International Conference on Hard X-ray Photoelectron Spectroscopy
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Weak Ferromagnetism in α-Fe2O3 Studied by Magnetic Circular Dichroism in SX-RIXS2016

    • Author(s)
      J.Miyawaki
    • Organizer
      International Conference on Vacuum Ultraviolet and X-ray Physics
    • Place of Presentation
      Zuerich, Switzerland
    • Year and Date
      2016-07-03
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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