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2011 Fiscal Year Final Research Report

Study on the superconducting micro-flux-jumps which successively appear around zero-field at low temperatures

Research Project

  • PDF
Project/Area Number 21540357
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

TENYA Kenichi  信州大学, 教育学部, 教授 (70261279)

Co-Investigator(Renkei-kenkyūsha) AMITSUKA Hiroshi  北海道大学, 大学院・理学研究院, 教授 (40212576)
YOKOYAMA Makoto  茨城大学, 理学部, 准教授 (70361285)
Project Period (FY) 2009 – 2011
Keywords強相関電子系 / 低温物性 / 物性実験 / 超伝導材料・素子
Research Abstract

For the" superclean" single crystals of Sr_2RuO_4 and UPt_3 with spin-triplet superconductivity, tiny flux-jumps successively appear in the hysteretic magnetization around zero-field at low temperatures, unlike to the case of" superclean" single crystals in spin singlet superconductors. This suggests that the tiny flux-jumps, which successively appear in the hysteretic magnetization around zero-field, are characteristic of the spin-triplet superconductors with mobile d-domain which is related to the internal degree of freedom in the order parameter in the spin-triplet superconductors.

  • Research Products

    (25 results)

All 2011 2010 2009 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (11 results) Remarks (8 results)

  • [Journal Article] Maki Parameter and Upper Critical Field of the Heavy-Fermion Superconductor UBe_<13>2011

    • Author(s)
      Y. Shimizu, Y. Ikeda, T. Wakabayashi, Y. Haga, K. Tenya, H. Hidaka, T. Yanagisawa, H. Amitsuka
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 80 Pages: 093701-1-093701-4

    • DOI

      DOI:10.1143/JPSJ.80.093701

    • 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
    • Journal Title

      Physica B

      Volume: 405 Pages: 277-278

    • DOI

      DOI:10.1016/j.physb.2009.11.101

    • 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

      Jpn. J. Appl. Phys.

      Volume: 49 Pages: 020209-1-020209-3

    • DOI

      DOI:10.1143/JJAP.49.020209

    • Peer Reviewed
  • [Journal Article] Magnetic properties around quantum critical point of CePt_<1-x> Rh_x2009

    • Author(s)
      I. Kawasaki, D. Nishikawa, H. Hidaka, T. Yanagisawa, K. Tenya, M. Yokoyama, H. Amitsuka
    • Journal Title

      Physica B

      Volume: 404 Pages: 2908-2911

    • DOI

      DOI:10.1016/j.physb.2009.07.139

    • Peer Reviewed
  • [Journal Article] Effects of Co doping on antiferromagnetic structure in CeRhIn_52009

    • Author(s)
      M. Yokoyama, I. Kawasaki, S. Oinuma, N. Oyama, K. Tenya, H. Amitsuka
    • Journal Title

      Physica B

      Volume: 404 Pages: 2539-2542

    • DOI

      DOI:10.1016/j.physb.2009.06.014

    • 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 Commun.

      Volume: 149 Pages: 1212-1215

    • DOI

      DOI:10.1016/j.ssc.2009.04.022

    • Peer Reviewed
  • [Presentation] 重い電子系超伝導体UBe_<13A>におけるGinzburg-Landauパラメーター2010

    • Author(s)
      清水悠晴,池田陽一,天谷健一,芳賀芳範,日高宏之,柳澤達也,網塚浩
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-25
  • [Presentation] SrRu_<1-x> Mn_xO_3の反強磁性絶縁体相における中性子散乱2010

    • Author(s)
      中田崇寛,横山淳,山路明由美,天谷健一,大山研司,佐藤卓,吉沢英樹
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2010-09-24
  • [Presentation] Field-direction dependence of novel high-field phase in Sr_2RuO_42010

    • Author(s)
      K. Tenya, M. Yokoyama, H. Amitsuka, K. Deguchi, Y. Maeno
    • Organizer
      International Conference on Strongly Correlated Electron Systems(SCES2010)
    • Place of Presentation
      Santa Fe(U. S. A.)
    • Year and Date
      2010-07-01
  • [Presentation] Magnetization in the superconducting mixed state of the heavy-fermion compound UBe_<13>2010

    • Author(s)
      Y. Shimizu, Y. Ikeda, T. Wakabayashi, K. Tenya, Y. Haga, H. Hidaka, T. Yanagisawa, H. Amitsuka
    • Organizer
      International Conference on Strongly Correlated Electron Systems(SCES2010)
    • Place of Presentation
      Santa Fe(U. S. A.)
    • Year and Date
      2010-07-01
  • [Presentation] 重い電子系超伝導体UBe_13における基礎物性測定2010

    • Author(s)
      清水悠晴,池田陽一,若林琢巳,天谷健一,芳賀芳範,日高宏之,柳澤達也,網塚浩
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
  • [Presentation] Magnetization and Magnetocaloric Studies on the Spin-Triplet Superconductivity in Sr_2RuO_42010

    • Author(s)
      K. Tenya, Y. Shimura, T. Sakakibara, M. Yokoyama, H. Amitsuka, K. Deguchi, Y. Maeno
    • Organizer
      International Symposium on Physics of New Quantum Phases in Superclean Materials
    • Place of Presentation
      Hamagin Hall" VIA MARE"(Yokohama)
    • Year and Date
      2010-03-10
  • [Presentation] 重い電子系超伝導体UBe_<13>における超伝導熱平衡磁化測定2009

    • Author(s)
      清水悠晴,池田陽一,天谷健一,芳賀芳範,日高宏之,柳澤達也,網塚浩
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-27
  • [Presentation] URu_2Si_2の圧力下比熱測定II2009

    • Author(s)
      池田陽一,西川大地,田中淳,倉橋洋祐,日高宏之,柳澤達也,横山淳,天谷健一,網塚浩
    • 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
  • [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
    • Year and Date
      2009-09-25
  • [Presentation] 立方晶希土類化合物R_3Pd_<20> Ge_6(R=Ce, Pr)におけるLa希釈効果2009

    • Author(s)
      若林琢巳,日高宏之,柳澤達也,横山淳,天谷健一,網塚浩
    • 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
  • [Presentation] Magnetization Study on the Spin-Triplet Superconductivity in Sr_2RuO_42009

    • Author(s)
      K. Tenya
    • Organizer
      The International Symposium on Novel SpinPairing 2009(NSP2009)
    • Place of Presentation
      Kyoto University
    • Year and Date
      2009-09-16
  • [Remarks]

    • URL

      http://rika.shinshu-u.ac.jp/labo/physics/01.html

  • [Remarks] アウトリーチ活動(1)「サイエンスキャンプ」講師, 2011. 10. 8-9,長野市旧芋井小学校分校.,アウトリーチ活動

  • [Remarks] (2)「平成23年度長野県免許法認定講習」講師, 2011. 8. 17-19,長野県総合教育センター(長野県塩尻市),アウトリーチ活動

  • [Remarks] (3)『2011「青年のための科学の祭典」上田大会』ブース展示(未来の電池,おもしろエコ・エネルギーを体験しよう;ロボットを体験しよう), 2011. 8. 6-7,信州大学繊維学部,アウトリーチ活動

  • [Remarks] (4)「サイエンスキャンプ」講師, 2010. 10. 9-10,長野市旧芋井小学校分校,アウトリーチ活動

  • [Remarks] (5) 2010「青少年のための科学の祭典」長野大会』ブース展示(未来の電池を体験しよう;おもしろいエコ・エネルギーのいろいろ), 2010. 7. 31-8. 1,信州大学工学部,アウトリーチ活動

  • [Remarks] (6)「サイエンスキャンプ」講師, 2009. 10. 10-11,長野市旧芋井小学校分校,アウトリーチ活動

  • [Remarks] (7)『2009「青少年のための科学の祭典」松本大会』ブース展示(おもしろいエコ・エネルギーのいろいろ), 2009. 8. 1-2,信州大学松本キャンパス,アウトリーチ活動

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Published: 2013-07-31  

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