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Verification of long-distance spin transport in spin liquid state using local excitation and detection of electron spin resonance

Research Project

Project/Area Number 24654100
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

KIMATA Motoi  東京大学, 物性研究所, 助教 (20462517)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords電子スピン共鳴 / スピン流 / 有機薄膜デバイス / スピン液体 / 有機磁性体
Research Abstract

We have verified that the local excitation of the spin states can be a spin current injector for high-resistivity materials, e.g., organic materials. We have also investigated the spin transport length of organic materials. As the first step, we have fabricated ferromagnet/organic junction using permalloy (Py) ferromagnet and PEDOT:PSS organic polymer, and then, performed spin pumping experiment. In this experiment, the spin states of organic layer is locally excited via exchange interaction at the Py/PEDOT:PSS interface. The transmitted spin current is detected by the inverse spin Hall effect of the Platinum (Pt) layer located at the opposite of the PEDOT:PSS film. The obtained spin diffusion length of PEDOT:PSS film is approximately 140 nm.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (8 results)

All 2013 Other

All Presentation (7 results) Remarks (1 results)

  • [Presentation] Spin-pumping spin injection into organic polymer PEDOT : PSS film2013

    • Author(s)
      木俣基、野崎大輔、新見康洋、大谷義近、田島裕之
    • Organizer
      58th Annual conference on magnetic materials (MMM2013)
    • Place of Presentation
      デンバー(米国)
    • Year and Date
      2013-11-08
    • Related Report
      2013 Final Research Report
  • [Presentation] スピンポンピングによる導電性高分子膜へのスピン注入2013

    • Author(s)
      木俣基、野崎大輔、新見康洋、大谷義近、田島裕之
    • Organizer
      日本物理学会2013年秋季大会(口頭発表)
    • Place of Presentation
      徳島大学(徳島県)
    • Year and Date
      2013-09-26
    • Related Report
      2013 Final Research Report
  • [Presentation] 分子性薄膜における横型スピンポンピングの試み2013

    • Author(s)
      野崎大輔、木俣基、新見康洋、大谷義近、田島裕之
    • Organizer
      日本物理学会2013年秋季大会(ポスター発表)
    • Place of Presentation
      徳島大学(徳島県)
    • Year and Date
      2013-09-25
    • Related Report
      2013 Final Research Report
  • [Presentation] スピンポンピングによる導電性高分子膜へのスピン注入2013

    • Author(s)
      木俣基、野崎大輔、新見康洋、大谷義近、田島裕之
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学(徳島県)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 分子性薄膜における横型スピンポンピングの試み2013

    • Author(s)
      野崎大輔、木俣基、新見康洋、大谷義近、田島裕之
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学(徳島県)
    • Related Report
      2013 Annual Research Report
  • [Presentation] Spin-pumping spin injection into organic polymer PEDOT:PSS film2013

    • Author(s)
      木俣基、野崎大輔、新見康洋、大谷義近、田島裕之
    • Organizer
      58th Annual conference on magnetism and magnetic materials
    • Place of Presentation
      デンバー(米国)
    • Related Report
      2013 Annual Research Report
  • [Presentation] スピンポンピングを用いた有機半導体へのスピン注入2013

    • Author(s)
      野崎大輔,木俣基,新見康洋,大谷義近,田島裕之
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Remarks]

    • URL

      http://www.riken.jp/lab-www/nanomag/indexjpn.html

    • Related Report
      2013 Final Research Report

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Published: 2013-05-31   Modified: 2020-05-15  

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