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Detection of Majorana surface bound states at the free surface of the superfluid 3He

Research Project

Project/Area Number 23684030
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

IKEGAMI Hiroki  独立行政法人理化学研究所, 河野低温物理研究室, 専任研究員 (70313161)

Project Period (FY) 2011-11-18 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywords超流動ヘリウム3 / 表面束縛状態 / トポロジカル超流動 / マヨラナ粒子 / イオン / 固有マグナス力 / カイラリティ / マヨラナ励起 / P波超流動 / 超流動ヘリウム3 / 電子バブル / P波超流動
Research Abstract

I investigated nonlinear transport properties of the positive ions trapped below the free surface of the superfluid 3He-B in order to observe surface bound states. I found that the nonlinear transport properties do not show any depth dependence. I furthermore revealed that mobilities of the positive and negative ions trapped below the free surface do not have any depth dependence. The lack of the depth dependence in the mobilities suggests that the scattering cross sections of the ions are significantly small, which is possibly understood by the Majorana nature of the surface bound states. In addition to these investigations, I discovered the intrinsic Magnus force and detected chirality directly for the first time in the superfluid 3He-A.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (27 results)

All 2014 2013 2012 2011 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (20 results) (of which Invited: 8 results) Remarks (1 results)

  • [Journal Article] Nonlinear Transport of Positive Ions Below a Free Surface of Topological Superfluid ^3He-B2014

    • Author(s)
      池上弘樹、河野公俊
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 175 Issue: 5-6 Pages: 718-724

    • DOI

      10.1007/s10909-014-1155-z

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Mobility of Ions Trapped Below a Free Surface of Superfluid 3He2013

    • Author(s)
      Hiroki Ikegami, Suk Bum Chung, and Kimitoshi Kono
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 12 Pages: 124607-124607

    • DOI

      10.7566/jpsj.82.124607

    • NAID

      210000132877

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Chiral symmetry breaking in superfluid 3He-A2013

    • Author(s)
      H. Ikegami, Y. Tsutsumi, and K. Kono
    • Journal Title

      Science

      Volume: 341 Issue: 6141 Pages: 59-62

    • DOI

      10.1126/science.1236509

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Unexpected Density Dependence of Mobility of Electron Bubbles Trapped below the Free Surface of Normal ^3He2013

    • Author(s)
      池上弘樹、松本喬博、河野公俊
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 171 Issue: 3-4 Pages: 159-164

    • DOI

      10.1007/s10909-012-0711-7

    • Related Report
      2013 Final Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mobility of Ions Trapped Below a Free Surface of Superfluid 3He2013

    • Author(s)
      Hiroki Ikegami, Suk Bum Chung, and Kimitoshi Kono
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 12 Pages: 124602-124602

    • DOI

      10.7566/jpsj.82.124602

    • NAID

      210000132877

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonlinear Transports of Electrons on Liquid ^4He in a 1.6μm Channel

    • Author(s)
      Hiroki Ikegami
    • Journal Title

      Journal of Physics : Conference Series

      Volume: (掲載確定)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] Direct observation of broken time-reversal symmetry in ^3He A-phase2014

    • Author(s)
      池上弘樹
    • Organizer
      International Workshop on Nonequilibrium Phenomena in Complex Quantum Systems : from Correlated Electrons to Mesoscopic Devices
    • Place of Presentation
      恩納村
    • Year and Date
      2014-04-24
    • Related Report
      2013 Final Research Report
  • [Presentation] Direct Detection of chirality in Superfluid ^3He-A2013

    • Author(s)
      池上弘樹
    • Organizer
      International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
    • Place of Presentation
      宜野湾
    • Year and Date
      2013-10-24
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Direct Detection of chirality in Superfluid ^3He-A2013

    • Author(s)
      池上弘樹
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2013)
    • Place of Presentation
      松江
    • Year and Date
      2013-08-01
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] 超流動ヘリウム3自由表面下のイオンの輸送現象2013

    • Author(s)
      池上弘樹、河野公俊
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      東広島
    • Year and Date
      2013-03-27
    • Related Report
      2013 Final Research Report
  • [Presentation] Direct Detection of chirality in Superfluid 3He-A2013

    • Author(s)
      池上弘樹
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2013)
    • Place of Presentation
      松江
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Direct Detection of chirality in Superfluid 3He-A2013

    • Author(s)
      池上弘樹
    • Organizer
      International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
    • Place of Presentation
      宜野湾
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 超流動ヘリウム3自由表面下のイオンの輸送現象2013

    • Author(s)
      池上弘樹
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島
    • Related Report
      2012 Annual Research Report
  • [Presentation] 超流動ヘリウム3-A相における軌道角運動量由来の新量子現象2012

    • Author(s)
      池上弘樹
    • Organizer
      日本物理学会2012年秋季大会シンポジウム「量子流体で拓かれる新しい物理」
    • Place of Presentation
      横浜
    • Year and Date
      2012-09-19
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Probing chirality of superfluid ^3He-A2012

    • Author(s)
      池上弘樹
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2013)
    • Place of Presentation
      ランカスター(イギリス)
    • Year and Date
      2012-08-20
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Unexpected Density Dependence of Mobility of Electron Bubbles Trapped below the Free Surface of Normal ^3He2012

    • Author(s)
      池上弘樹、松本喬博、河野公俊
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2013)
    • Place of Presentation
      ランカスター(イギリス)
    • Year and Date
      2012-08-20
    • Related Report
      2013 Final Research Report
  • [Presentation] Ultra-low Temperature Mobility of Electron Bubbles Formed below the Free Surface of Superfluid ^3He2012

    • Author(s)
      池上弘樹
    • Organizer
      TQP2012 International Conference on Topological Quantum Phenomena
    • Place of Presentation
      名古屋
    • Year and Date
      2012-05-24
    • Related Report
      2013 Final Research Report
  • [Presentation] Probing the direction of the angular momentum of Cooper pairs in superfluid ^3He-A2012

    • Author(s)
      池上弘樹
    • Organizer
      TQP2012 International Conference on Topological Quantum Phenomena
    • Place of Presentation
      名古屋
    • Year and Date
      2012-05-17
    • Related Report
      2013 Final Research Report
  • [Presentation] 超流動ヘリウム3B相の自由表面下にトラップされたイオンの移動度II2012

    • Author(s)
      池上弘樹、河野公俊
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      西宮市
    • Year and Date
      2012-03-27
    • Related Report
      2013 Final Research Report
  • [Presentation] 超流動ヘリウム3B相の自由表面下にトラップされたイオンの移動度II2012

    • Author(s)
      池上弘樹
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      西宮
    • Year and Date
      2012-03-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] 自由表面下にトラップされた電子バブルの移動度2012

    • Author(s)
      池上弘樹
    • Organizer
      東京大学物性研究所短期研究会
    • Place of Presentation
      柏
    • Year and Date
      2012-01-07
    • Related Report
      2013 Final Research Report
  • [Presentation] 超流動3He自由表下にトラップされた電子バブルの移動度2012

    • Author(s)
      池上弘樹
    • Organizer
      東京大学物性研究所短期研究会
    • Place of Presentation
      柏(招待講演)
    • Year and Date
      2012-01-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] 超流動ヘリウム3-A相における軌道角運動量由来の新量子現象2012

    • Author(s)
      池上弘樹
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Probing chirality of superfluid 3He-A2012

    • Author(s)
      Hiroki Ikegami
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2012)
    • Place of Presentation
      ランカスター イギリス
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Unexpected Density Dependence of Mobility of Electron Bubbles Trapped below the Free Surface of Normal 3He2012

    • Author(s)
      Hiroki Ikegami
    • Organizer
      International Symposium on Quantum Fluids and Solids (QFS2012)
    • Place of Presentation
      ランカスター イギリス
    • Related Report
      2012 Annual Research Report
  • [Presentation] Ultra-low Temperature Mobility of Electron Bubbles Formed below the Free Surface of Superfluid ^3He-B2011

    • Author(s)
      池上弘樹、松本喬博、河野公俊
    • Organizer
      International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
    • Place of Presentation
      守山
    • Year and Date
      2011-11-02
    • Related Report
      2013 Final Research Report
  • [Remarks] ホームページ

    • URL

      http://lt.riken.go.jp/index.shtml

    • Related Report
      2013 Final Research Report

URL: 

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

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