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Functional development of materials for spintronics by the muonium spin exchange method

Research Project

Project/Area Number 19340080
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics I
Research InstitutionUniversity of Yamanashi

Principal Investigator

TORIKAI Eiko  University of Yamanashi, 大学院・医学工学総合研究部, 教授 (20188832)

Co-Investigator(Kenkyū-buntansha) SHIRAKI Ichiro  山梨大学, 大学院・医学工学総合研究部, 助教 (10399389)
NAGAMINE Kanetada  (独)理化学研究所, 山崎原子物理研究室, 名誉研究員 (50010947)
SHIMOMURA Koichiro  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 講師 (60242103)
Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Keywords半導体 / ミュオン / スピントロニクス / 伝導電子スピン偏極 / スピンエレクトロニクス / ミュエスアール / パルスレーザー / ミュオニウム
Research Abstract

シリコン等の半導体をスピントロニクス材料に活用するための普遍的な伝導電子スピン偏極度(CEP)測定方法として,ミュオニウムスピン交換反応法の確立を目指し,GaAsの円偏光キャリア励起により,ミュオンがCEPに高い感度を持つことを,初めて証明した.さらにSiへの歪GaAs蒸着膜を介した光励起電子注入により,Si中での3μs以上の長いキャリア寿命と,キャリア拡散の様子の観測に成功し,この方法の普遍性を示した.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (13 results)

All 2010 2009 2008

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (6 results)

  • [Journal Article] Muons for Spintronics: Photo-induced Conduction Electron Polarization in n-type GaAs Observed by Muonium Method2009

    • Author(s)
      K. Yokoyama, K. Nagamine, K. Shimomura, H.W.K. Tom, R. Kawakami, P. Bakule, Y. Matsud,, F.L. Pratt, E. Torikai
    • Journal Title

      Physica B 404

      Pages: 856-858

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Towards the first study of chemical reaction dynamics of Mu with vibrational-state-selected reactants in the gas phase: The Mu+H2 *(v=1) reaction by stimulated Raman pumping2009

    • Author(s)
      Pavel Bakule, Oleksandr Sukhorukov, Yasuyuki Matsuda, k Francis Pratt, Peter Gumplinger, Takamasa Momose, Eiko Torikai, Donald Fleming
    • Journal Title

      Physica B 404

      Pages: 1013-1016

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Muons for Spintronics : Photo-induced Conduction Electron Polarization in n-type GaAs Observed by Muonium Method2009

    • Author(s)
      K. Yokoyama, K. Nagamine, K. Shimomura, H. W. K. Tom, R. Kawakami, P. Bakule, Y. Matsud^<a,>, F. L. Pratt, E. Torikai
    • Journal Title

      Physica B 404

      Pages: 856-858

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Towards the first study of chemical reaction dynamics of Mu with vibrational-state-selected reactants in the gas phase : The Mu+H_2^*(v=1)reaction by stimulated Raman pumping2009

    • Author(s)
      Pavel Bakule, Oleksandr Sukho rukov, Yasuyuki Matsuda, K Francis Pratt, Peter Gumplinger, Takamasa Momose, Eiko Torikai, Donald Fleming
    • Journal Title

      Physica B 404

      Pages: 1013-1016

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular radiation biological effect in wet protein and DNA observed in the measurements of labeled electron with Muons2009

    • Author(s)
      K. Nagamine, E. Torikai, K. Shimomura, Y. Ikedo, JS. Schultz
    • Journal Title

      Physica B 404

      Pages: 953-956

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of spin exchange in alkali atom-surface scattering2008

    • Author(s)
      Eiji Hirose, Eiko Torikai
    • Journal Title

      Surf. Int. Analysis 40

      Pages: 1705-1708

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Spin Dependent Scattering of Cs Atoms from Ferromagnetic Surfaces2008

    • Author(s)
      E. Hirose, E. Torikai
    • Journal Title

      Journal of Magnetism and Magnetic Materials 310

      Pages: 1705-1708

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Are Spin Polarized Atoms Clustering?2010

    • Author(s)
      M.Tanaka
    • Organizer
      First Asia-Europe Physics Summit (ASEPS)
    • Place of Presentation
      EPOCAL, Tsukuba, Japan
    • Year and Date
      2010-03-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] ミュオニウムスピン交換法による半導体(Si, GaAs)中の伝導電子スピン偏極測定2010

    • Author(s)
      鳥養映子
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
    • Related Report
      2009 Final Research Report
  • [Presentation] ミュオニウムスピン交換法による半導体(Si,GaAs)中の伝導電子スピン偏極測定2010

    • Author(s)
      鳥養映子
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学 HW会場
    • Year and Date
      2010-03-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] Pilot experiment for muonium photo ionization in GaAs2009

    • Author(s)
      K. Shimomura
    • Organizer
      Advanced Science Research Symposium 2009
    • Place of Presentation
      Techno Community Square Ricotti, Tokai, Japan.
    • Year and Date
      2009-11-13
    • Related Report
      2009 Final Research Report
  • [Presentation] Muons for Spintronics: Photo-induced Conduction Electron Polarization in n-type GaAs Observed by Muonium Method2008

    • Author(s)
      K. Yokoyama
    • Organizer
      International Conference on Muon Spin Rotation, Relaxation and Resonance
    • Place of Presentation
      EPOCAL Tsukuba, Japan.
    • Year and Date
      2008-07-22
    • Related Report
      2009 Final Research Report
  • [Presentation] Muons for Spintronics : Photo-induced Conduction Electron Polarization in n-type GaAs Observed by Muonium Method2008

    • Author(s)
      K. Yokoyama
    • Organizer
      Internationa Conference on Muon Spin Rotation, Relaxation and Rotation
    • Place of Presentation
      Tsukuba
    • Year and Date
      2008-07-22
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2020-05-15  

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