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Novel Magnetism and Superconductivity on Filled Skutterudite Compounds which Possess Rattling

Research Project

Project/Area Number 20740192
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionHokkaido University

Principal Investigator

YANAGISAWA Tatsuya  Hokkaido University, 創成研究機構, 特任助教 (10456353)

Co-Investigator(Renkei-kenkyūsha) GOTO Terutaka  新潟大学, 大学院・自然科学研究科, 教授 (60134053)
TAKEDA Naoya  新潟大学, 工学部, 教授 (80242171)
NEMOTO Yuichi  新潟大学, 大学院・自然科学研究科, 准教授 (10303174)
Research Collaborator MAPLE M. Brian  カリフォルニア大学サンディエゴ校, 物理学科, 教授
E. BAUMBACH Ryan  カリフォルニア大学サンディエゴ校, 物理学科, 博士研究員
HO Pei-Chun  カリフォルニア州立大学フレズノ校, 物理学科, 准教授
Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords強相関系 / ラットリング / 超音波 / 充填スクッテルダイト / カゴ状化合物 / 電子-格子相互作用 / アメリカ:ポーランド / 超伝導 / 国際情報交換 / アメリカ : ポーランド
Research Abstract

Ultrasonic measurements on the Filled-Skutterudite compounds Pr_<1-x>NdxOs_4Sb_<12>(x=0.45, 0.25, 1.0)have been performed. Frequency dependences of elastic constant C11 were investigated with longitudinal ultrasonic frequencies varying between 34 to 245 MHz on these samples. A characteristic ultrasonic dispersion, which had also been observed in PrOs_4Sb_<12> (x=0) at around 30K, is also observed in the dilute systems and shifts gradually to higher temperature with increasing the Nd concentration x. On the other hand, the C11 of x=0.45 sample shows softening and levels off feature at T=0.25K. This result implies that the Nd3+ ion's degenerate CEF ground state is split due to some order even in the Pr^<3+> ion's contribution to SC. In addition, a magnetically robust elastic softening of C11 was found in the end material NdOs_4Sb_<12> (x=1.0) under magnetic field 2 T<H<10T at low temperature T<1K, which suggest a presence of the off-center tunneling as same as LaOs_4Sb_<12> and PrOs_4Sb_<12>. Above results imply that an origin of the heavy-fermion state of NdOs_4Sb_<12> could possibly be related to a degenerate quantum ground state due to the off-center degrees of freedom.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (25 results)

All 2010 2009 2008 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (12 results) Remarks (3 results)

  • [Journal Article] Elastic constants of U(Ru1-xRhx)2Si22010

    • Author(s)
      Tatsuya Yanagisawa, Hitoshi Saito, Taichi Mayama, Hiroyuki Hidaka, Makoto Yokoyama, Hiroshi Amitsuka
    • Journal Title

      J. Phys.: Conf. Ser. 200

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Elastic constants of U(Ru_<1-x>Rh_x)_2Si_22010

    • Author(s)
      Tatsuya Yanagisawa
    • Journal Title

      J.Phys.: Conf.Ser 200

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasonic investigation of off-center rattling in Pr0. 55Nd0. 45Os4Sb122009

    • Author(s)
      Tatsuya Yanagisawa, Taichi Mayama, Hiroyuki Hidaka, Hiroshi Amitsuka, Akio Yamguchi, Koji Araki, Yuichi Nemoto, Terutaka Goto, Naoya Takeda, Pei-Chun Ho, M. Brian Maple
    • Journal Title

      Physica B 404

      Pages: 3235-3237

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Quadrupole Ordering in Clathrate Compound Ce3Pd20Si62009

    • Author(s)
      Terutaka Goto, Tomoyuki Watanabe, Seiji Tsuduku, Haruki Kobayashi, Yuichi Nemoto, Tatsuya Yanagisawa, Mitsuhiro Akatsu, Genki Ano, Osamu Suzuki, Naoya Takeda, Andreas Donni, Hideaki Kitazawa
    • Journal Title

      J. Phys. Soc. Jpn. 78

    • NAID

      210000107683

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasonic investigation of off-center rattling in Pr_<0.55>Nd_<0.45>Os_4Sb_<12>2009

    • Author(s)
      Tatsuya Yanagisawa
    • Journal Title

      Physica B 404

      Pages: 3235-3237

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quadrupole Ordering in Clathrate Compound Ce_3Pd_<20>Si_62009

    • Author(s)
      Terutaka Goto
    • Journal Title

      Journal of Physical Society of Japan 78

    • NAID

      110007097862

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasonic investigation of the off-center rattling in the filled skutterudite compound Nd Os4Sb122008

    • Author(s)
      Tatsuya Yanagisawa, Pei-Chun Ho, William M. Yuhasz, M. Brian Maple, Yuri Yasumoto, Hiromu Watanabe, Yuichi Nemoto, Terutaka Goto
    • Journal Title

      J. Phys. Soc. Jpn. 77

    • NAID

      130005436574

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] A comparison of the normal and superconducting state properties of Pr(Os1-xRux)4Sb12 and Pr1-xNdxOs4Sb122008

    • Author(s)
      Pei-Chun Ho, Tatsuya Yanagisawa, Nicholas P. Butch, William M. Yuhasz, Columbine C. Robinson, Alex. A. Dooraghi, M. Brian Maple
    • Journal Title

      Physica B 403

      Pages: 1038-1040

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasonic investigation of the off-center rattling in the filled skutterudite compound NdOs_4Sb_<12>2008

    • Author(s)
      Tatsuya Yanagisawa
    • Journal Title

      Journal of Physical Society of Japan 77

    • NAID

      110006821310

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A comparison of the normal and superconducting state properties of Pr(Os_<1-x>Ru_x)_4Sb_<12> and Pr_<1-x>Nd_xOs_4Sb_<12>2008

    • Author(s)
      P. -C. Ho
    • Journal Title

      Physica B 403

      Pages: 1038-1040

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 充填スクッテルダイトLaRu4As12の超音波測定2010

    • Author(s)
      柳澤達也, 他
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学津島キャンパス
    • Year and Date
      2010-03-21
    • Related Report
      2009 Final Research Report
  • [Presentation] 充填スクッテルダイトLaRu_4As_<12>の超音波測定2010

    • Author(s)
      柳澤達也
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学津島キャンパス(岡山市)
    • Year and Date
      2010-03-21
    • Related Report
      2009 Annual Research Report
  • [Presentation] Pr1-xNdxOs4Sb12におけるラットリングの超音波測定2009

    • Author(s)
      柳澤達也, 他
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学黒髪キャンパス
    • Year and Date
      2009-09-26
    • Related Report
      2009 Final Research Report
  • [Presentation] Pr_<1-x>Nd_xOs_4Sb_<12>におけるラットリングの超音波測定2009

    • Author(s)
      柳澤達也
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学黒髪キャンパス(態本市)
    • Year and Date
      2009-09-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] Novel magnetism and superconductivity on filled skutterudite compounds which possess rattling2009

    • Author(s)
      Tatsuya Yanagisawa, et al.
    • Organizer
      International symposium for young scientists on physics of strongly correlated electrons
    • Place of Presentation
      北海道大学遠友学舎
    • Year and Date
      2009-08-26
    • Related Report
      2009 Final Research Report
  • [Presentation] Novel magnetism and superconductivity on filled skutterudite compounds which possess rattling2009

    • Author(s)
      柳澤達也
    • Organizer
      International symposium for young scientists on physics of strongly correlated electrons
    • Place of Presentation
      北海道大学遠友学舎(扎幌市)
    • Year and Date
      2009-08-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] Elastic constants of U(Ru1-xRhx)2Si22009

    • Author(s)
      Tatsuya Yanagisawa, et al.
    • Organizer
      International Conference of Magnetism
    • Place of Presentation
      Karlsruhe, Germany
    • Year and Date
      2009-07-28
    • Related Report
      2009 Final Research Report
  • [Presentation] Elastic constants of U(Ru_<1-x>Rh_x)_2Si_22009

    • Author(s)
      柳澤達也
    • Organizer
      International Conference of Magnetism
    • Place of Presentation
      Karlsruhe, Germany
    • Year and Date
      2009-07-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] Ultrasonic investigation of off-center rattling in Pr0. 55Nd0. 45Os4Sb122008

    • Author(s)
      Tatsuya Yanagisawa, et al.
    • Organizer
      International Conference on Strongly Correlated Electron System
    • Place of Presentation
      ブジオス・ブラジル
    • Year and Date
      2008-08-19
    • Related Report
      2009 Final Research Report
  • [Presentation] 充填スクッテルダイトPr1-xNdxOs4Sb12の超音波分散2008

    • Author(s)
      柳澤達也, 他
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      岩手大学
    • Related Report
      2009 Final Research Report
  • [Presentation] Ultrasonic investigation of off-center rattling in Pr_<0.55>Nd_<0.45>Os_4Sb_<12>2008

    • Author(s)
      Tatsuya YANAGISAWA
    • Organizer
      International Conference on Strongly Correlated Electron System
    • Place of Presentation
      ブジオス・ブラジル
    • Related Report
      2008 Annual Research Report
  • [Presentation] 充填スクッテルダイトPr_<1-x>Nd_xOs_4Sb_<12>の超音波分散2008

    • Author(s)
      柳澤達也
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      岩手大学
    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.cris.hokudai.ac.jp/yanagisawa

    • Related Report
      2009 Final Research Report
  • [Remarks] 研究室webページ

    • URL

      http://www.cris.hokudai.ac.jp/yanagisawa/publications

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.cris.hokudai.ac.jp/vanagisawa/

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2020-05-15  

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