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2009 Fiscal Year Self-evaluation Report

Optical measurement of spin current and magnetic relaxation in metallic multilayers

Planned Research

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Project AreaCreation and control of spin current
Project/Area Number 19048006
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTohoku University

Principal Investigator

ANDO Ysuo  Tohoku University, 大学院・工学研究科, 教授 (60250726)

Project Period (FY) 2007 – 2010
Keywordsトンネル接合 / Co_2MnSi / 強磁性共鳴 / ポンププローブ法 / スピンダイナミクス / スピン流 / スピン進入長 / 磁気緩和
Research Abstract

金属系薄膜においてレーザーで励起した電子がスピン系に緩和する際に誘起するスピンのダイナミクス観測を行う.また強磁性共鳴を用いたスピン流の生成と磁気緩和に関する系統的な測定を行う.これらにより金属強磁性体におけるスピン緩和のメカニズムを明らかにすることを目指す.具体的には
(1) 高品位薄膜およびトンネル接合の作製
(2) 高スピン分極率,低磁気緩和定数ホイスラー薄膜のスピンダイナミクス
(3) ホットエレクトロンの注入とスピン流
(4) 強磁性共鳴と磁気緩和,を行う.

  • Research Products

    (13 results)

All 2010 2009 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Direct Observation of Atomic Ordering and Interface Structure in Co2MnSi/MgO/Co2MnSi Magnetic Tunnel Junctions by High-Angle Annular Dark-Field Scanning Transmission Electron Microscopy2009

    • Author(s)
      T. Miyajima, M. Oogane, Y. Kotaka, T. Yamazaki, M. Tsukada, Y. Kataoka, H. Naganuma, Y.,o
    • Journal Title

      Appl. Phys. Exp. 2

      Pages: 093001-1-3

    • Peer Reviewed
  • [Journal Article] Enhancement in tunnel magnetoresistance effect by inserting CoFeB to the tunneling barrier interface in Co2MnSi/MgO/CoFe magnetic tunnel junctions2009

    • Author(s)
      S. Tsunegi, Y. Sakuraba, M. Oogane, Hiroshi Naganuma, K. Takanashi, Y.,o
    • Journal Title

      Appl. Phys. Lett. 94

      Pages: 252503-1-3

    • Peer Reviewed
  • [Journal Article] Epitaxial Mn2. 5Ga thin films with giant perpendicular magnetic anisotropy for spintronic devices2009

    • Author(s)
      Shigemi Mizukami, Daisuke Watanabe, Hiroshi Naganuma, Mikihiko Oogane, Yasuo,o, Terunobu Miyazaki, Feng Wu
    • Journal Title

      Appl. Phys. Lett. 48

      Pages: 122503-1-3

    • Peer Reviewed
  • [Journal Article] Low damping constant for Co2FeAl Heusler alloy films and its correlation with density of states2009

    • Author(s)
      S. Mizukami, D. Watanabe, M. Oogane, Y.,o, Y. Miura, M. Shirai, T. Miyazaki
    • Journal Title

      J. Appl. Phys. 105

      Pages: 07D306-1-3

    • Peer Reviewed
  • [Journal Article] Half-metallicity and Gilbert damping constant in Co2FexMn1-xSi Heusler alloys depending on the film composition2009

    • Author(s)
      Takahide Kubota, Sumito Tsunegi, Mikihiko Oogane, Shigemi Mizukami, Terunobu Miyazaki, Hiroshi Naganuma, Yasuo,o
    • Journal Title

      Appl. Phys. Lett. 94

      Pages: 122504-1-3

    • Peer Reviewed
  • [Presentation] Gilbert Damping Mechanisms in Half-metallic Heusler Alloys (invited)2010

    • Author(s)
      S. Mizukami
    • Organizer
      American Physical Society March Meeting 2010
    • Place of Presentation
      Portland OR, USA
    • Year and Date
      2010-03-19
  • [Presentation] MgO二重障壁強磁性トンネル接合における巨大磁気抵抗効果2010

    • Author(s)
      安藤康夫, Lixian Jiang, 永沼博, 大兼 幹彦
    • Organizer
      春季第57回応用物理学関係連合講演会
    • Place of Presentation
      シンポジウム"スピントロニクスデバイスの新展開", 東海大学, 平塚
    • Year and Date
      2010-03-18
  • [Presentation] Large magneto-resistance effect and magnetic properties in Co2-based Heusler compounds2010

    • Author(s)
      M. Oogane, J. Hamrle, B. Hillebrands, Y.,o
    • Organizer
      JST-DFG Workshop on Nanoelectronics
    • Place of Presentation
      Bonn, Germany
    • Year and Date
      2010-02-19
  • [Presentation] Spin dynamics for Heusler alloy films (invited)2010

    • Author(s)
      S. Mizukami, J. Walowski, T. Kubota, M. Oogane, H. Naganuma, Y.,o, T. Miyazaki
    • Organizer
      4th International Workshop on Spin Currents & 2nd International Workshop on Spincaloritoronics
    • Place of Presentation
      Sendai Japan
    • Year and Date
      2010-02-10
  • [Presentation] Magnetic damping of half-metallic Heusler alloys2009

    • Author(s)
      M. Oogane, T. Kubota, S. Tsunegi, J. Sato, H. Naganuma, S. Mizukami, Y.,o
    • Organizer
      International Workshop and Seminar on Magnonics: From Fundamentals to Applications 2009
    • Place of Presentation
      Dresden, Germany
    • Year and Date
      2009-08-06
  • [Book] スピントロニクスの基礎と材料・応用技術の最前線2009

    • Author(s)
      安藤康夫
    • Total Pages
      60-74
    • Publisher
      シーエムシー出版
  • [Remarks]

    • URL

      http://www.apph.tohoku.ac.jp/spin/

  • [Patent(Industrial Property Rights)] 二重障壁強磁性トンネル接合および磁気デバイス2009

    • Inventor(s)
      姜麗仙, 永沼博, 大兼幹彦, 安藤康夫
    • Industrial Property Rights Holder
      姜麗仙, 永沼博, 大兼幹彦, 安藤康夫
    • Industrial Property Number
      特許・特願2009-155359
    • Filing Date
      2009-06-30

URL: 

Published: 2011-06-18   Modified: 2016-04-21  

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