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Time-Correlation Measurement using Coherent Spin-Polarized Electron Beam

Research Project

Project/Area Number 15K13404
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Quantum beam science
Research InstitutionNagoya University

Principal Investigator

Kuwahara Makoto  名古屋大学, 未来材料・システム研究所, 准教授 (50377933)

Co-Investigator(Kenkyū-buntansha) 田中 信夫  名古屋大学, 未来材料・システム研究所, 研究員 (40126876)
石田 高史  名古屋大学, 未来材料・システム研究所, 助教 (60766525)
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsスピン / 強度干渉 / 量子効果 / コインシデンス
Outline of Final Research Achievements

To observe a quantum interference effect in a transmission electron microscope (TEM), an intensity correlation was performed using a coherent spin-polarized electron waves.
We have succeeded in development of a detection system for the intensity correlation in a spin-polarized TEM. The measurement system has 48.3-ps time-resolution for coincidence detection between two electrons. Using the developed detectors, we have gotten observations of anti-bunching effect and the dependence on spin-polarization. We could measure the anti-bunching rate of 10% by using the coherent spin-polarized electron beam, and also observed enhancement effect of spin-polarization slightly. Consequently, it is revealed that the anti-bunching effect includes both space charge effect and second-order interference effect.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (22 results)

All 2017 2016 2015

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (17 results) (of which Int'l Joint Research: 5 results,  Invited: 11 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] The Boersch effect in a picosecond pulsed electron beam emitted from a semiconductor photocathode2016

    • Author(s)
      Makoto Kuwahara, Yoshito Nambo, Kota Aoki, Kensuke Sameshima, Xiuguang Jin, Toru Ujihara, Hidefumi Asano, Koh Saitoh, Yoshikazu Takeda, and Nobuo Tanaka
    • Journal Title

      Applied Physics Letters

      Volume: 109 Issue: 1 Pages: 013108-013108

    • DOI

      10.1063/1.4955457

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] スピン偏極パルスTEMにおける超高速時間分解能とそのビーム品質2016

    • Author(s)
      桑原真人、宇治原徹、浅野秀文、齋藤晃、田中信夫
    • Journal Title

      顕微鏡

      Volume: 50 Pages: 151-155

    • NAID

      130007701778

    • Related Report
      2016 Annual Research Report 2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] NEA光陰極を用いたコヒーレント時間分解TEMの開発2017

    • Author(s)
      桑原真人
    • Organizer
      真空ナノエレクトロニクス第158委員会 第116回研究会
    • Place of Presentation
      静岡県浜松市
    • Year and Date
      2017-03-02
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Beam properties of picosecond bunched electrons in a time-resolved TEM using a semiconductor photocathode2017

    • Author(s)
      桑原真人
    • Organizer
      顕微鏡学会・超高分解能顕微鏡法分科会 研究会
    • Place of Presentation
      神奈川県三浦市
    • Year and Date
      2017-02-18
    • Related Report
      2016 Annual Research Report
  • [Presentation] Coherence Volume of Electron Wavepacket Emitted from a Semiconductor Photocathode in a Transmission Electron Microscope2017

    • Author(s)
      M. Kuwahara
    • Organizer
      Electron Holography Workshop 2017
    • Place of Presentation
      埼玉県鳩山市
    • Year and Date
      2017-02-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] コヒーレントパルス透過電子顕微鏡の光励起および緩和過程観察への応用2016

    • Author(s)
      桑原真人
    • Organizer
      日本物理学会2016秋季大会
    • Place of Presentation
      新潟県新潟市
    • Year and Date
      2016-09-15
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 半導体光陰極を用いた次世代透過電子顕微鏡の開発2016

    • Author(s)
      桑原真人
    • Organizer
      第77回応用物理学会秋季大会
    • Place of Presentation
      石川県神奈川市
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Coherence of a pulsed electron beam extracted from a semiconductor photocathode in transmission electron microscope2016

    • Author(s)
      M. Kuwahara
    • Organizer
      The 16th European Microscopy Congress
    • Place of Presentation
      Lyon, France
    • Year and Date
      2016-08-28
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光陰極平面から放出されるパルス電子線の空間電荷効果2016

    • Author(s)
      桑原真人
    • Organizer
      日本顕微鏡学会 第72回学術講演会
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2016-06-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] コヒーレントスピン偏極電子線をもちいた時間分解顕微法の開発2016

    • Author(s)
      桑原真人
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] 半導体光陰極を用いた次世代透過電子顕微鏡の開発2016

    • Author(s)
      桑原真人
    • Organizer
      ナノテスティング学会電子線応用技術研究会第9回研究会
    • Place of Presentation
      東京都
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 半導体フォトカソードを用いたパルス透過電子顕微鏡2016

    • Author(s)
      桑原真人
    • Organizer
      日本顕微鏡学会関西支部・平成 28 年度特別講演会
    • Place of Presentation
      京都府宇治市
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 半導体光陰極を利用したTEMにおける電子波特性2016

    • Author(s)
      桑原真人
    • Organizer
      日本顕微鏡学会・電子光学設計技術研究部会・平成28年度研究会
    • Place of Presentation
      愛知県名古屋市
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Spinor interfernce in transmission electron microscope2015

    • Author(s)
      M. Kuwahara, K. Sameshima, K. Aoki, H. Asano, T. Ujihara, K. Saitoh, N. Tanaka
    • Organizer
      Internatinal Symposium on EcoTopia Science
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      2015-11-27
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Time-resolved LVTEM using spin-polarized electron beam2015

    • Author(s)
      Makoto Kuwahara
    • Organizer
      Young Scientists Satellite Meeting in The 2nd East-Asia Microscopy Conference
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      2015-11-27
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Coherences of spin-polarized and pulsed electron beam extracted from a semiconductor photocathode in TEM2015

    • Author(s)
      Makoto Kuwahara
    • Organizer
      The 2nd East-Asia Microscopy Conference
    • Place of Presentation
      Himeji, Japan
    • Year and Date
      2015-11-24
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピン偏極透過電子顕微鏡が拓く材料解析の可能性2015

    • Author(s)
      桑原真人
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      Osaka, Japan
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] スピン偏極電子源とその磁性体観察の可能性2015

    • Author(s)
      桑原真人
    • Organizer
      応用物理学会東海支部 第26回基礎セミナー「ナノスピン構造の作製・評価技術」
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      2015-08-03
    • Related Report
      2015 Research-status Report
  • [Presentation] 負の電子親和性をもつエミッタから放出される電子の性質2015

    • Author(s)
      桑原 真人,南保 由人,齋藤 晃,浅野 秀文,宇 治原 徹,田中 信夫
    • Organizer
      日本顕微鏡学会第71回学術講演会
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2015-05-13
    • Related Report
      2015 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] 反射電子を検出する走査電子顕微鏡2017

    • Inventor(s)
      桑原真人、田中信夫、宇治原徹、齋藤晃
    • Industrial Property Rights Holder
      桑原真人、田中信夫、宇治原徹、齋藤晃
    • Industrial Property Rights Type
      特許
    • Patent Publication Number
      2017-004774
    • Filing Date
      2017-01-05
    • Related Report
      2016 Annual Research Report
  • [Patent(Industrial Property Rights)] スピン偏極電子線のコヒーレンス測定装置と、その利用方法2016

    • Inventor(s)
      桑原真人、田中信夫、宇治原徹、齋藤晃
    • Industrial Property Rights Holder
      桑原真人、田中信夫、宇治原徹、齋藤晃
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016-04-14
    • Related Report
      2016 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 分析装置2015

    • Inventor(s)
      桑原真人、田中信夫、齋藤晃、宇治原徹
    • Industrial Property Rights Holder
      桑原真人、田中信夫、齋藤晃、宇治原徹
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2015-121398
    • Filing Date
      2015-06-16
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2018-03-22  

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