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Search of novel quantum transport phenomena in a single domain of chiral superconductors

Research Project

Project/Area Number 21840004
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionHokkaido University (2010)
Asahikawa Medical College (2009)

Principal Investigator

NOBUKANE Hiroyoshi  北海道大学, 大学院・理学研究院, 助教 (60550663)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥2,704,000 (Direct Cost: ¥2,080,000、Indirect Cost: ¥624,000)
Fiscal Year 2010: ¥1,287,000 (Direct Cost: ¥990,000、Indirect Cost: ¥297,000)
Fiscal Year 2009: ¥1,417,000 (Direct Cost: ¥1,090,000、Indirect Cost: ¥327,000)
Keywordsカイラル超伝導 / マヨラナフェルミオン / トポロジカル量子現象 / 単一ドメイン / 量子異常 / カイラルp波超伝導 / パリティの破れ / ヘリカル渦 / 電子輸送特性
Research Abstract

We found the parity-violating curves in a single domain of Sr_2RuO_4 superconductors through electric transport measurements. The results show that the Sr_2RuO_4 itself provides spontaneous magnetization. An applied magnetic field changes the chirality of the single domain. We suggest that the Majorana fermions are excited at the edge of Sr_2RuO_4.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (35 results)

All 2012 2011 2010 2009 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (20 results) Remarks (3 results)

  • [Journal Article] Majorana-Weyl fermions in(2+1)-dimensional superconductors2011

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, and S. Tanda, J. Phys
    • Journal Title

      Conf. Ser

      Volume: (Accepted)

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] STM spectroscopy on deuteratedκ-(BEDT-TTF-d[ n, n])_2Cu[ N(CN)_2] Br2011

    • Author(s)
      Y. Oka, R. Abe, H. Nobukane, N. Matsunaga, K. Nomura, K. Ichimura, and A. Kawamoto, J. Phys
    • Journal Title

      Conf. Ser

      Volume: (Accepted)

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Majorana-Weyl fermions in the chiral superconductor Sr_2RuO_42011

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, S. Tanda
    • Journal Title

      Physical Review B

      Volume: 83 144502(1)-(6)

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Majorana-Weyl fermions in the chiral superconductor Sr_2RuO_42011

    • Author(s)
      H.Nobukane, et al
    • Journal Title

      Physical Review B

      Volume: 83

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transport properties in a single domain of microscale Sr_2RuO_4 single crystals2010

    • Author(s)
      H. Nobukane, K. Inagaki, S. Tsuchiya, Y. Asano, K. Ichimura, K. Yamaya, S. Takayanagi, I. Kawasaki, K. Tenya, H. Amitsuka, S. Tanda
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 49

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Parity-violating current-voltage curves in a single domain of Sr_2RuO_4 superconductors2010

    • Author(s)
      H. Nobukane, K. Inagaki, K. Ichimura, K. Yamaya, S. Takayanagi, I. Kawasaki, K. Tenya, H. Amitsuka, K. Konno, Y. Asano, S. Tanda, Physica B
    • Volume
      405
    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Transport Properties in a Single Domain of Microscale Sr_2RuO_4 Single Crystals2010

    • Author(s)
      H.Nobukane, et al.
    • Journal Title

      Japanese Journal of Applied Physics 49

      Pages: 20209-20209

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Duality Breaking of Vortex Configuration in a Hierarchical Honeycomb Network2009

    • Author(s)
      S. Tsuchiya, T. Toshima, H. Nobukane, K. Inagaki, S. Tanda, Physical Review B
    • Volume
      80
    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Parity Violation in a Single Domain of Spin-Triplet Sr_2RuO_4 Superconductors2009

    • Author(s)
      H. Nobukane, K. Inagaki, K. Ichimura, K. Yamaya, S. Takayanagi, I. Kawasaki, K. Tenya, H. Amitsuka, K. Konno, Y. Asano, S. Tanda
    • Journal Title

      Solid State Communication

      Volume: 149 Pages: 1212-1215

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Parity violation in a single domain of spin-triplet Sr_2RuO_4 superconductors2009

    • Author(s)
      H.Nobukane, et al.
    • Journal Title

      Solid State Communications 149

      Pages: 1212-1215

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Duality breaking of vortex configuration in a hierarchical honeycomb network2009

    • Author(s)
      S.Tsuchiya, et al.
    • Journal Title

      Physical Review B 80

      Pages: 94502-94502

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parity-violating current-voltage curves in a single domain of Sr_2RuO_4 superconductors

    • Author(s)
      H.Nobukane, et al.
    • Journal Title

      Physica B ((Article in Press))

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 1. Chiral Majorana edge excitations in Sr_2RuO_42012

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, K. Ichimura, K. Yamaya, S. Takayanagi, K. Inagaki, K. Tenya, H. Amitsuka, Y. Asano, K. Nomura, and S. Tanda
    • Organizer
      Topological Quantum Phenomena in Condensed Matter with Broken Symmetries(TQP2012)
    • Place of Presentation
      Nagoya, Japan
    • Related Report
      2010 Final Research Report
  • [Presentation] 有機超伝導体λ-(BETS)_2GaCl_4におけるSTM分2012

    • Author(s)
      光岡雄基、一ノ宮弘樹、延兼啓純、松永悟明、野村一成、ファティマ・スルタナ、小林昭子、小林速男
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学
    • Related Report
      2010 Final Research Report
  • [Presentation] Majorana fermions at the edge of the chiral superconductor Sr_2RuO_42011

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, K. Ichimura, K. Yamaya, S. Takayanagi, K. Inagaki, K. Tenya, H. Amitsuka, Y. Asano, K. Nomura, and S. Tanda
    • Organizer
      対称性の破れた凝縮系におけるトポロジカル量子現象第2回領域研究会
    • Place of Presentation
      岡山大学
    • Related Report
      2010 Final Research Report
  • [Presentation] カイラル超伝導体Sr_2RuO_4におけるマヨラナ粒子の観測II2011

    • Author(s)
      延兼啓純、得能光行、松山豊樹、丹田聡
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Related Report
      2010 Final Research Report
  • [Presentation] 部分重水素置換κ-(BEDT-TTF-d[ n, n])_2Cu[ N(CN)_2] Brの超伝導ギャップ3 : STM分光2011

    • Author(s)
      岡雄基、阿部良太、延兼啓純、松永悟明、野村一成、市村晃一、河本充司
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Related Report
      2010 Final Research Report
  • [Presentation] Majorana-Weyl fermions in(2+1)-dimensional superconductors2011

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, S. Tanda
    • Organizer
      26th international conference on Low Temperature Physics(LT26)
    • Place of Presentation
      Beijing, China
    • Related Report
      2010 Final Research Report
  • [Presentation] STM Spectroscopy on deuteratedκ-(BEDT-TTF-d[ n, n])_2Cu[ N(CN)_2] Br2011

    • Author(s)
      Y. Oka, R. Abe, H. Nobukane, N. Matsunaga, K. Nomura, K. Ichimura, A. Kawamoto
    • Organizer
      26th international conference on Low Temperature Physics(LT26)
    • Place of Presentation
      Beijing, China
    • Related Report
      2010 Final Research Report
  • [Presentation] カイラル超伝導体Sr_2RuO_4におけるマヨラナ粒子の観測2011

    • Author(s)
      延兼啓純、得能光行、松山豊樹、丹田聡
    • Organizer
      日本物理学会第66年次大会
    • Place of Presentation
      新潟大学
    • Related Report
      2010 Final Research Report
  • [Presentation] 部分重水素置換κ-(BEDT-TTF)_2Cu[ N(CN)_2] Brの超伝導ギャップ2 : STM分光2011

    • Author(s)
      岡雄基、阿部良太、延兼啓純、松永悟明、野村一成、市村晃一、河本充司
    • Organizer
      日本物理学会第66年次大会
    • Place of Presentation
      新潟大学
    • Related Report
      2010 Final Research Report
  • [Presentation] カイラル超伝導体Sr_2RuO_4におけるマヨラナ粒子の観測2011

    • Author(s)
      延兼啓純
    • Organizer
      日本物理学会第66年次大会
    • Place of Presentation
      新潟大学(新潟市)
    • Related Report
      2010 Annual Research Report
  • [Presentation] 部分重水素置換κ-(BEDT-TTF)_2Cu[N(CN)_2]Brの超伝導ギャップ2:STM分光2011

    • Author(s)
      岡雄基
    • Organizer
      日本物理学会第66年次大会
    • Place of Presentation
      新潟大学(新潟市)
    • Related Report
      2010 Annual Research Report
  • [Presentation] 階層構造超伝導ネットワークにおけるボルテックス配置の双対性の破れ2010

    • Author(s)
      土屋聡
    • Organizer
      日本物理学会 第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] 階層構造超伝導ネットワークにおけるボルテックス配置の双対性の破れ2010

    • Author(s)
      土屋聡、豊嶋剛司、延兼啓純、稲垣克彦、市村晃一、丹田聡
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Related Report
      2010 Final Research Report
  • [Presentation] Parity violation in a chiral single domain Sr_2RuO_4 : Implication of Majorana fermions2009

    • Author(s)
      延兼啓純
    • Organizer
      I.F. Schegolev Memorial Conference"Low-Dimensional Metallic and Superconducting Systems"
    • Place of Presentation
      Chernogolovka, Russia
    • Year and Date
      2009-10-11
    • Related Report
      2009 Annual Research Report
  • [Presentation] 単一ドメインSr_2RuO_4におけるパリティ破れの発見2009

    • Author(s)
      延兼啓純
    • Organizer
      日本物理学会 2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] Parity-Violating Current-Voltage Curves in a Single Domain of Sr_2RuO_4 Superconductors2009

    • Author(s)
      延兼啓純
    • Organizer
      The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
    • Place of Presentation
      Hilton Niseko Village, Hokkaido
    • Year and Date
      2009-09-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] Majorana fermions in a chiral superconductor Sr_2RuO_42009

    • Author(s)
      延兼啓純
    • Organizer
      The 1st International Mini-Workshop on Topological Physics
    • Place of Presentation
      Hokkaido University
    • Year and Date
      2009-06-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Parity violation in a chiral single domain Sr_2RuO_4 : Implication of Majorana fermions2009

    • Author(s)
      H. Nobukane, A. Tokuno, T. Matsuyama, and S. Tanda
    • Organizer
      I. F. Schegolev Memorial Conference Low-Dimensional Metallic and Superconducting Systems
    • Place of Presentation
      Chernogolovka, Russia
    • Related Report
      2010 Final Research Report
  • [Presentation] 単一ドメインSr_2RuO_4におけるパリティ破れの発見2009

    • Author(s)
      延兼啓純、稲垣克彦、市村晃一、山谷和彦、高柳滋、川崎郁斗、天谷健一、網塚浩、金野幸吉、浅野泰寛、本間龍也、丹田聡
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Related Report
      2010 Final Research Report
  • [Presentation] Parity-violating current-voltage curves in a single domain of Sr2_RuO_4 superconductors2009

    • Author(s)
      H. Nobukane, K. Inagaki, K. Ichimura, K. Yamaya, S. Takayanayagi, I. Kawasaki, K. Tenya, H. Amitsuka, K. Konno, Y. Asano, S. Tanda
    • Organizer
      The 8th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets(ISCOM 2009)
    • Place of Presentation
      Hokkaido
    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://exp-ap.eng.hokudai.ac.jp/~nobukane/wiki/index.php

    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://exp-ap.eng.hokudai.ac.jp/~nobukane/wiki/index.php

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://exp-ap.eng.hokudai.ac.jp/~nobukane/

    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2020-05-15  

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