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2011 Fiscal Year Final Research Report

CLARIFICATION OF QUANTUM PHENOMENA AND THEIR EFFECTS OF CRITICAL END POINT OF FIRST ORDER TRANSITION IN QUANTUM DEGENERATE SYSTEMS

Research Project

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Project/Area Number 21740240
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionKyushu Institute of Technology (2011)
Osaka University (2009-2010)

Principal Investigator

WATANABE Shinji  九州工業大学, 大学院・工学研究院, 准教授 (40334346)

Project Period (FY) 2009 – 2011
Keywords強相関系
Research Abstract

It is shown theoretically that in strongly correlated electron systems, near the quantum critical end point where the critical end point of the first-order transition is suppressed to absolute zero, new quantum critical phenomena emerge. Near the quantum critical end point of the first-order valence transition, as temperature is decreased, uniform magnetic susceptibility and nuclear magnetic relaxation rate show divergence, resistivity shows a T-linear dependence, and electronic specific-heat coefficient shows logarithmic divergence. These results naturally explain unconventional quantum critical phenomena observed recently in paramagnetic-metal phases in Ce-and Yb-based heavy electron systems.

  • Research Products

    (18 results)

All 2012 2011 2010 2009 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (7 results) Book (2 results) Remarks (2 results)

  • [Journal Article] Roles of Critical Valence Fluctuations in Ce-and Yb-Based Heavy Fermion Metals2011

    • Author(s)
      渡辺真仁、三宅和正
    • Journal Title

      J. Phys. Condens. Matter

      Volume: 23 Pages: 094217-1-094217-11

    • DOI

      DOI:10.1088/0953-8984/23/9/094217

    • Peer Reviewed
  • [Journal Article] Sharp Valence Change as Origin of Drastic Change of Fermi Surface and Transport Anomalies in CeRhIn5 under Pressure2011

    • Author(s)
      渡辺真仁、三宅和正
    • Journal Title

      J. Phys. Conference Series

      Volume: 273 Pages: 012063-1-012063-4

    • DOI

      DOI:10.1088/1742-6596/273/1/012063

    • Peer Reviewed
  • [Journal Article] Quantum Valence Criticality as an Origin of Unconventional Critical Phenomena2010

    • Author(s)
      渡辺真仁、三宅和正
    • Journal Title

      Phys. Rev. Lett.

      Volume: 105 Pages: 186403-1-186403-4

    • DOI

      DOI:10.1103/PhysRevLett.105.186403

    • Peer Reviewed
  • [Journal Article] Origin of Drastic Change of Fermi Surface and Transport Anomalies in CeRhIn5 under Pressure2010

    • Author(s)
      渡辺真仁、三宅和正
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 79 Pages: 033707-1-033707-4

    • DOI

      DOI:10.1143/JPSJ.79.033707

    • Peer Reviewed
  • [Journal Article] Influence of Quantum Critical Point of First-Order Valence Transition on Ce-and Yb-based Heavy Fermions2010

    • Author(s)
      渡辺真仁、三宅和正
    • Journal Title

      Phys. Status. Solidi B

      Volume: 247 Pages: 490-494

    • DOI

      DOI:10.1002/pssb.200983011

    • Peer Reviewed
  • [Journal Article] J. Flouquet、Valence Fluctuations Revealed by Magnetic Field and Pressure Scans : Comparison with Experiments in YbXCu4(X=In, Ag, Cd) and CeYIn5(Y=Ir, Rh)2009

    • Author(s)
      渡辺真仁、鶴田篤史、三宅和正
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 78 Pages: 104706-1-104706-13

    • DOI

      DOI:10.1143/JPSJ.78.104706

    • Peer Reviewed
  • [Journal Article] J. Flouquet、Magnetic-Field Induced Quantum Critical Points of Valence Transition in Ce-and Yb-Based Heavy Fermions2009

    • Author(s)
      渡辺真仁、鶴田篤史、三宅和正
    • Journal Title

      Physica B

      Volume: 404 Pages: 2942-2945

    • DOI

      DOI:10.1016/j.physb.2009.07.040

    • Peer Reviewed
  • [Presentation] Quantum Valence Criticality and Magnetism in Ce-and Yb-Based Heavy-Electron Systems2011

    • Author(s)
      渡辺真仁
    • Organizer
      韓国物理学会
    • Place of Presentation
      釜山(韓国)(招待講演)
    • Year and Date
      2011-10-20
  • [Presentation] 価数転移の量子臨界現象とその波及効果2011

    • Author(s)
      渡辺真仁
    • Organizer
      日本物理学会若手奨励賞受賞記念講演会(領域8)
    • Place of Presentation
      富山大学(招待講演)
    • Year and Date
      2011-09-21
  • [Presentation] New Universality Class of Quantum Criticality in Ce-and Yb-based Heavy Fermions2011

    • Author(s)
      渡辺真仁
    • Organizer
      International Conference on Strongly Correlated Electron Systems(SCES2011)
    • Place of Presentation
      ケンブリッジ大学(英国)(招待講演)
    • Year and Date
      2011-09-02
  • [Presentation] New Quantum Criticality in Itinerant-Electron Systems with Strong Local Correlations2011

    • Author(s)
      渡辺真仁
    • Organizer
      International Conference on Ultra Low Temperature 2011(ULT2011)
    • Place of Presentation
      KAIST(韓国)(招待講演)
    • Year and Date
      2011-08-20
  • [Presentation] Interplay of Quantum Valence Criticality and Magnetism in Ce-and Yb-Based Heavy-Electron Systems2011

    • Author(s)
      渡辺真仁
    • Organizer
      SKKU-APCTP International Symposium on Heavy Electrons and Novel Quantum Phases
    • Place of Presentation
      成均館大学(韓国)(招待講演)
    • Year and Date
      2011-08-17
  • [Presentation] New Trend of Superconductivity and Quantum Critical Phenomena in Correlated Electron Systems2009

    • Author(s)
      渡辺真仁
    • Organizer
      International Workshop on Advanced Materials and Nanotechnology 2009
    • Place of Presentation
      ハノイ大学(ベトナム)(招待講演)
    • Year and Date
      2009-11-24
  • [Presentation] Influence of Quantum Critical Point of First-Order Valence Transition on Ce-and Yb-based Heavy Fermions2009

    • Author(s)
      渡辺真仁
    • Organizer
      International Conference on Quantum Criticality and Novel Phases
    • Place of Presentation
      マックスプランク研究所(ドイツ)(招待講演)
    • Year and Date
      2009-08-03
  • [Book] 重い電子系における近藤効果と量子臨界現象, 物性研究2012

    • Author(s)
      渡辺真仁
    • Total Pages
      605-636
  • [Book] 量子モンテカルロ法における負符号問題とその克服:経路積分繰り込み群法の開発とその発展, 素粒子論研究2009

    • Author(s)
      渡辺真仁
    • Total Pages
      87-92
  • [Remarks] 渡辺真仁、日本物理学会第5回若手奨励賞(領域8)受賞、2011年3月25日JPSJオンライン-ニュース & コメント受賞

  • [Remarks] 渡辺真仁、New Frontiers of Quantum Critical End Point、J. Phys. Soc. Jpn. Online-News and Comments、2011年8月10日(JPSJ編集委員長による依頼記事)受賞

    • URL

      http://jpsj.ipap.jp/news/jpsj-nc_92.html

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Published: 2013-07-31  

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