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Studies on quantum critical phenomena in Yb compounds by neutron scattering

Research Project

Project/Area Number 26400365
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionUniversity of the Ryukyus

Principal Investigator

ASO Naofumi  琉球大学, 理学部, 教授 (40313118)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords重い電子 / Yb化合物 / 近藤効果 / 量子臨界点 / 単結晶試料 / 中性子散乱 / YbCo2Zn20 / 置換効果 / 量子相転移
Outline of Final Research Achievements

This work is to study the quantum phase transition and the effect of magnetism and valence fluctuation in heavy electron Yb compounds under high pressure and particularly to grow single crystals of YbCo2Zn20 (showing pressure-induced quantum phase transition) and its substitution materials and to get some information on quantum critical points in Yb compounds by means of physical properties measurements (mainly neutron scattering).
As a result of growing single crystals of substitution substances, some elements are uniformly substituted, some elements are not. According to its physical property measurements, chemical pressure effects in both positive and negative directions were observed. In addition, with some element substitution, we could observe a phenomenon similar to the transition from the dense Kondo effect at the Yb site to the impurity Kondo effect as seen in the La substituted Ce compounds.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (20 results)

All 2017 2016 2015 2014

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (18 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Magnetic structure of divalent europium compound EuGa4 studied by single crystal time-of-flight neutron diffraction2016

    • Author(s)
      T. Kawasaki, K. Kaneko, A. Nakamura, N. Aso, M. Hedo, T. Nakama, T. Ohhara, R. Kiyanagi, K. Oikawa, I. Tamura, A. Nakao, K. Munakata, T. Hanashima and Y. Onuki
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 85 Issue: 11 Pages: 114711-114715

    • DOI

      10.7566/jpsj.85.114711

    • NAID

      210000134159

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Single crystal neutron diffraction study of high neutron absorbing compound EuGa42014

    • Author(s)
      T. Kawasaki, K. Kaneko, N. Aso, A. Nakamura, M. Hedo, T. Nakama, and Y. Onuki
    • Journal Title

      JPS Conf. Proc.

      Volume: 1 Pages: 0140091-4

    • DOI

      10.7566/jpscp.1.014009

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] CeRu2Al10のRh置換によるインタラクションクロスオーバー2017

    • Author(s)
      小林,阿曽,他
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 重い電子系化合物YbCo2Zn20における元素置換効果と圧力効果に関するNQRによる研究2016

    • Author(s)
      與儀,阿曽,他
    • Organizer
      日本物理学会 2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] 重い電子系化合物YbCo2Zn20のZnサイトの置換効果II2016

    • Author(s)
      阿曽,他
    • Organizer
      日本物理学会 2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Zn-site Substitution Effect in YbCo2Zn202016

    • Author(s)
      小林,阿曽,他
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2016)
    • Place of Presentation
      浙江大学(中国浙江省,杭州市)
    • Year and Date
      2016-05-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neutron Scattering Study in Single-Crystalline YbCo2Zn202016

    • Author(s)
      阿曽,他
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2016)
    • Place of Presentation
      浙江大学(中国浙江省,杭州市)
    • Year and Date
      2016-05-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] YbCo2Zn20置換系試料の構造解析II2016

    • Author(s)
      小林理気,阿曽尚文他
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] 重い電子系化合物Yb(Co1-xNix)2Zn20の物性IV2016

    • Author(s)
      比嘉泰之,阿曽尚文他
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] 希土類金属間化合物YbCo2Zn20のNQRによる研究2015

    • Author(s)
      通事樹,與儀護,阿曽尚文他
    • 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 Research-status Report
  • [Presentation] 重い電子系化合物Yb(Co1-xNix)2Zn20の物性III2015

    • Author(s)
      比嘉泰之,阿曽尚文他
    • 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 Research-status Report
  • [Presentation] YbCo2Zn20置換系試料の構造解析2015

    • Author(s)
      小林理気,阿曽尚文他
    • 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 Research-status Report
  • [Presentation] 重い電子系化合物YbCo2Zn20のZnサイトの置換効果2015

    • Author(s)
      高村治希,阿曽尚文他
    • 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 Research-status Report
  • [Presentation] YbCo2Zn20の中性子散乱II2015

    • Author(s)
      阿曽尚文他
    • 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 Research-status Report
  • [Presentation] 重い電子系化合物YbCo2-xNixZn20の物性II2015

    • Author(s)
      比嘉泰之,阿曽尚文他
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学(東京都)
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] RCoGa5(R=Tb, Dy, Ho)の磁気構造解析II2015

    • Author(s)
      小林理気,阿曽尚文他
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学(東京都)
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] 単結晶中性子回折法を用いた高い中性子吸収を示す EuX4(X=Al,Ga)の磁気構造の研究2014

    • Author(s)
      川崎卓郎,金子耕士,仲村愛,阿曽尚文他
    • Organizer
      日本結晶学会平成26年度年会
    • Place of Presentation
      東京大学農学部(東京都)
    • Year and Date
      2014-11-01
    • Related Report
      2014 Research-status Report
  • [Presentation] 重い電子系化合物 YbCo2-xNixZn20 の物性2014

    • Author(s)
      比嘉泰之,阿曽尚文他
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学(愛知県)
    • Year and Date
      2014-09-08
    • Related Report
      2014 Research-status Report
  • [Presentation] Crystal structure of non-centrosymmetric heavy fermion superconductors CeRhSi3 and CeIrSi3 studied by single-crystal X-ray diffraction2014

    • Author(s)
      Naofumi Aso 他
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2014)
    • Place of Presentation
      フランス・グルノーブル
    • Year and Date
      2014-07-08
    • Related Report
      2014 Research-status Report
  • [Presentation] Using inelastic neutron scattering to investigate the microscopic spin dynamics of actinide superconductors - experimental possibilities today and tomorrow2014

    • Author(s)
      A. Hiess, N. Aso 他
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES 2014)
    • Place of Presentation
      フランス・グルノーブル
    • Year and Date
      2014-07-07
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2020-05-15  

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