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Physics of Odd-frequency pairings Theory and Experiment

Research Project

Project/Area Number 15H03686
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionNagoya University

Principal Investigator

Tanaka Yukio  名古屋大学, 工学研究科, 教授 (40212039)

Co-Investigator(Kenkyū-buntansha) 柏谷 聡  国立研究開発法人産業技術総合研究所, その他部局等, 首席研究員 (40356770)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2015: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords超伝導対称性 / 超伝導近接効果 / マヨラナフェルミオン / 2重量子ドット / スピン3重項超伝導体 / 近接効果 / トンネル効果 / 超伝導 / 対称性 / 新奇なクーパー対 / 接合系 / Eilenberger 方程式 / アンドレーエフ束縛状態 / 奇周波数ペア / 不純物散乱
Outline of Final Research Achievements

Odd-frequency pairing is an exotic pairing which has a sign change of the exchange of time of electrons forming Cooper pair. From the theoretical side, we have studied
(1)Influence of the impurity scattering in unconventional superconductor / normal metal junctions on the charge transport profile including charge conductance and shot noise (2)Non-local conductance in the superconductor double quantum dot hybrid system (3)Double semiconductor nano-wires on the superconductor from the view point of odd-frequency pairings. Also, we have studied two channel Kondo lattice where bulk odd-frequency gap function is realized. We have calculated tunneling conductance and Josephson current in this model. Experimentally, we have measured a surface impedance of Au/ Sr2RuO4 junctions. We have found anomalous temperature dependence as compared to conventional superconductor Al. We have also developed a suspended normal metal type tunneling junction refrigerator.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (23 results)

All 2018 2017 2016 2015

All Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 10 results,  Acknowledgement Compliant: 8 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 5 results,  Invited: 9 results)

  • [Journal Article] Surface Andreev Bound States and Odd-Frequency2018

    • Author(s)
      Yukio Tanaka and Shun Tamura
    • Journal Title

      Journal of Low Temperature Physics

      Volume: 191 Issue: 1-2 Pages: 61-83

    • DOI

      10.1007/s10909-018-1849-8

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current fluctuations in unconventional superconductor junctions with impurity scattering2017

    • Author(s)
      Pablo Burset, Bo Lu, Shun Tamura, Yukio Tanaka,
    • Journal Title

      Physical Review B

      Volume: 95 Issue: 22

    • DOI

      10.1103/physrevb.95.224502

    • NAID

      130007509450

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Theory of surface Andreev bound states and tunneling spectroscopy in three-dimensional chiral superconductors2017

    • Author(s)
      S. Tamura, S. Kobayashi, L. Bo, and Y. Tanaka
    • Journal Title

      Phys. Rev. B

      Volume: 95 Issue: 10

    • DOI

      10.1103/physrevb.95.104511

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Theory of time-reversal topological superconductivity in double Rashba wires: symmetries of Cooper pairs and Andreev bound states2016

    • Author(s)
      H. Ebisu, B. Lu, J. Klinovaja, and Y. Tanaka
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2016 Issue: 8 Pages: 083I01-083I01

    • DOI

      10.1093/ptep/ptw094

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Influence of the impurity scattering on charge transport in unconventional superconductor junctions2016

    • Author(s)
      Bo Lu, Pablo Burset, Yasunari Tanuma, Alexander A. Golubov, Yasuhiro Asano, Yukio Tanaka
    • Journal Title

      Physical Review B

      Volume: 94 Issue: 1

    • DOI

      10.1103/physrevb.94.014504

    • NAID

      130007508095

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Tunneling and Josephson effects in odd-frequency superconductor junctions: A study on multichannel Kondo chain2016

    • Author(s)
      S. Hoshino, K. Yada, and Y. Tanaka
    • Journal Title

      Phys. Rev. B

      Volume: 93 Issue: 22

    • DOI

      10.1103/physrevb.93.224511

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] All-electrical generation and control of odd-frequency s-wave Cooper pairs in double quantum dots2016

    • Author(s)
      P. Burset, B. Lu, H. Ebisu, Y. Asano, Y. Tanaka
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 20 Pages: 201402-201402

    • DOI

      10.1103/physrevb.93.201402

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Josephson current in a normal-metal nanowire coupled to a superconductor/ferromagnet/superconductor junction2016

    • Author(s)
      H. Ebisu, B. Lu, K. Taguchi, A. A. Golubov, Y. Tanaka
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 2 Pages: 024509-024509

    • DOI

      10.1103/physrevb.93.024509

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Theory of tunneling conductance of anomalous Rashba metal/superconductor junctions2015

    • Author(s)
      Toshiyuki Fukumoto, Katsuhisa Taguchi, Shingo Kobayashi, and Yukio Tanaka
    • Journal Title

      Physical Review B

      Volume: 92 Issue: 14 Pages: 144514-144514

    • DOI

      10.1103/physrevb.92.144514

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Fragile surface zero-energy flat bands in three-dimensional chiral superconductors2015

    • Author(s)
      S. Kobayashi, Y. Tanaka, and M. Sato
    • Journal Title

      Phys. Rev. B

      Volume: 92 Issue: 21 Pages: 214514-214514

    • DOI

      10.1103/physrevb.92.214514

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] パラフェルミオンと奇周波数ペアリング2018

    • Author(s)
      田仲由喜夫, K.Snizhko
    • Organizer
      日本物理瓦解
    • Related Report
      2017 Annual Research Report
  • [Presentation] Recent topics of surface Andreev bound states2017

    • Author(s)
      Yukio Tanaka
    • Organizer
      Moscow International Symposium on Magnetism (MISM2017)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Surface Andreev bound states and odd-frequency pairing in topological superconductor junctions2017

    • Author(s)
      Yukio Tanaka
    • Organizer
      Topological matter & flat bands
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 異方的超伝導体接合における不純物散乱効果2017

    • Author(s)
      Bo Lu, Pablo Burset, 田沼慶忠, Alexander A. Golubov, 浅野泰寛, 田仲由喜夫
    • Organizer
      日本物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 異方的超伝導体接合における電流揺らぎの理論2017

    • Author(s)
      Pablo Burset, Lu Bo, 田村駿, 田仲由喜夫
    • Organizer
      日本物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Josephson effects and edge states of Sr2RuO42017

    • Author(s)
      Satoshi Kashiwaya
    • Organizer
      Oxide Superspin 2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Josephson effects and edge states of topological superconductors2017

    • Author(s)
      Satoshi Kashiwaya
    • Organizer
      Mesoscopic Structures: Fundamentals and Applications IV International Conference(MSFA’2017)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Physics of Andreev Bound states2016

    • Author(s)
      Y. Tanaka
    • Organizer
      The ESAS Winter School, ‘Novel frontiers in superconducting electronics: from fundamental concepts and advanced materials towards future applications
    • Place of Presentation
      イタリア、ポッツオーリ
    • Year and Date
      2016-12-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Control of odd-frequency s-wave Cooper pairs in double quantum dots2016

    • Author(s)
      Y. Tanaka
    • Organizer
      Internatoinal workshop on nano-spin conversion science & quantum spin dynamics
    • Place of Presentation
      東京大学、本郷キャンパス
    • Year and Date
      2016-10-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Influence of the impurity scattering on charge transport in unconventional superconductor junctions2016

    • Author(s)
      Y. Tanaka
    • Organizer
      Physics of bulk-edge correspondence and its universality: From solid state physics to cold atoms
    • Place of Presentation
      京都大学、基礎物理学研究所
    • Year and Date
      2016-09-30
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Influence of the impurity scattering on charge transport in unconventional superconductor junctions2016

    • Author(s)
      Y. Tanaka
    • Organizer
      MIPT Conference & International School, “Superconducting hybrid nanostructures: physics and applications
    • Place of Presentation
      ロシア、モスクワ物理工学校
    • Year and Date
      2016-09-23
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 1次元磁性原子列のトポロジカル超伝導と奇周波数ペア2015

    • Author(s)
      戎弘実、矢田圭司、田仲由喜夫
    • Organizer
      日本物理学会 2015年秋季大会
    • Place of Presentation
      関西大学
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] Odd-Frequency pairing and Andreev bound states2015

    • Author(s)
      Y. Tanaka
    • Organizer
      11th Conference on Materials and Mechanisms of Superconductivity (M2S)
    • Place of Presentation
      Geneva, (Switzerland)
    • Year and Date
      2015-08-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2015-04-16   Modified: 2020-05-15  

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