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2007 Fiscal Year Final Research Report Summary

New Phase of Matter in Multidisciplinary Approach

Research Project

Project/Area Number 15GS0213
Research Category

Grant-in-Aid for Creative Scientific Research

Allocation TypeSingle-year Grants
Research InstitutionOsaka University

Principal Investigator

KITAOKA Yoshio  Osaka University, Graduate School of Engineering Science, Professor (70110707)

Co-Investigator(Kenkyū-buntansha) MIAKE Kazumasa  Osaka University, Graduate School of Engineering Science, Professor (90109265)
ONUKI Yoshichika  Osaka University, Graduate School of Science, Professor (40118659)
SUGA Shigemasa  Osaka University, Graduate School of Engineering Science, Professor (40107438)
NOZUE Yasuo  Osaka University, Graduate School of Science, Professor (60125630)
SHIMIZU Katsuya  Osaka University, Center for Quantum Science and Technology under Extreme Conditions, Professor (70283736)
Project Period (FY) 2003 – 2007
KeywordsMaterials Science / Strongly correlated matter / Unconventional superconductors / Quantum critical D phenomena / Magnetism / Condensed-matter theory / Condensed-matter exneriment / NMR / NOR
Research Abstract

Our main objectives have established new concepts in materials science through the elucidation of the new phases of matter that underlies the superconductivity and magnetic ordering in strongly correlated matter, and the creation of unique materials, by measuring the properties of the materials in multidisciplinary approach. We list up the remarkable results obtained by this project.
1. The discovery of the uniformly coexisting phase of antiferromagnetism (AFM) and superconductivity (SC) in a single CuO_2 layer has lead us to uncover their genuine phase diagram including an AF quantum critical point, which significantly differs from the previously believed phase diagrams as the function of carrier doping level for high-T_c copper-oxides superconductors.
2. A tetracritical point in the temperature(T)-pressure(P) phase diagram of the heavy-fermion (HF) compound CeRhIn_5 was unraveled against the previous research results.
3. The coexistence phase of ferromagnetism and SC was identified in UGe_2 around a quantum first-order phase transition.
4. Novel pressure-induced superconductors CeNiGe_3 and Ce_2Ni_3Ge_5 were discovered.
5. The discovery of the pressure-induced SC of HF compounds without inversion symmetry, such as UIr and CeIrSi_3 has pointed to the possibility of a new and unique superconducting state.
6. Miyake, et. al. have been able to explain the appearance of high-T_c SC for HF compounds with the sudden change in the. valence number of Ce upon the application of pressure, by a novel anisotropic SC mechanism triggered by the critical valence number fluctuation.
These remarkable findings on the new phases of strongly correlated matter would lead us to a coherent understanding of the mechanism of unconventional SC in HF compounds and high-T_c superconductors which is a long-term issue since their discoveries.

  • Research Products

    (37 results)

All 2007 2006 2005

All Journal Article (10 results) (of which Peer Reviewed: 5 results) Presentation (21 results) Book (3 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] Quantum phase diagram of antiferromagnetism and superconductivity with a tetracritical point in CeRhIns in zero magnetic field2007

    • Author(s)
      M.Yashima
    • Journal Title

      Phys.Rev.B 76

      Pages: 020509(1-4)(R)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Unconventional Pairing States in Heavy-Fermion Superconductors Studied by the NQR/NMR experiments2007

    • Author(s)
      Y.Kitaoka
    • Journal Title

      J.Phys.Soc.Jpn. 76

      Pages: 051001(1-15)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Unconventional Heavy-Fermion Superconductivity of a New Transuranium Compound NpPd5Al22007

    • Author(s)
      D.Aoki
    • Journal Title

      J.Phys.Soc.Jpn. 76

      Pages: 063701(1-4)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Quantum phase diagram of antiferromagnetism and superconductivity with a tetracritical point in CeRhIn5 in zero magnetic field2007

    • Author(s)
      M. Yashima
    • Journal Title

      Phys. Rev. B 76

      Pages: 020509(1.4)(R)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Unconventional Pairing States in Heavy-Fermion Superconductors Studied by the NQR/NMR Experiments2007

    • Author(s)
      Y. Kitaoka
    • Journal Title

      J. Phys. Soc. Jpn. 76

      Pages: 051001(1-15)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Unconventional Heavy-Fermion Superconductivity of a New Transuranium Compound NpPd5Ah2007

    • Author(s)
      D. Aoki
    • Journal Title

      J. Phys. Soc. Jpn. 76

      Pages: 063701(1-4)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Uniform Mixing of High-Tc Superconductivity and Antiferromagnetism on a Single CuO2 Plane of a Hg-Based Five-Layered Cuprate2006

    • Author(s)
      H.Mukuda
    • Journal Title

      Phys.Rev.Lett. 96

      Pages: 087001(1-4)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Superconductivity Emerging near Quantum Critical Point of Valence Transition2006

    • Author(s)
      S.Watanabe
    • Journal Title

      J.Phys.Soc.Jpn. 75

      Pages: 043710(1-4)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Uniform Mixing of High-Te Superconductivity and Antiferromagnetism on a Single CuO_2 Plane of a Hg-Based Five-Layered Cuprate2006

    • Author(s)
      H. Mukuda
    • Journal Title

      Phys. Rev. Lett. 96

      Pages: 087001(1-4)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] SupercondUctivity Emerging near Quantum Critical Point of Valence Transition2006

    • Author(s)
      S. Watanabe
    • Journal Title

      J. Phys. Soc. Jpn. 75

      Pages: 043710(1-4)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] New insight into an under-dqped regime of high Tc superconductivity NMR Studies of Multi-layered Cuprates2007

    • Author(s)
      Y.Kitaoka
    • Organizer
      APS(アメリカ物理学会)March meeting of American Physical Society
    • Place of Presentation
      Denver,USA
    • Year and Date
      20070305-08
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] New insight into an under-doped regime of high Tc superconductivity-NMR Studies of Multi-layered Cuprates-.2007

    • Author(s)
      Y. Kitaoka
    • Organizer
      APS March meeting of American Physical Society
    • Place of Presentation
      Denver, USA
    • Year and Date
      20070305-08
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Superconducting elements under very high pressure at 〜20 K2007

    • Author(s)
      K.Shimizu
    • Organizer
      UK-Japan Workshop on Advanced Materials
    • Place of Presentation
      Edinburgh,Scotland,UK
    • Year and Date
      2007-12-11
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Superconducting elements under very high pressure at〜20 K.2007

    • Author(s)
      K. Shimizu
    • Organizer
      UK-Japan Workshop on Advanced Materials
    • Place of Presentation
      Edinburgh, Scotland, UK
    • Year and Date
      2007-12-11
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] High-quality single crystal growth and Fermi surface properties in f-electron systems2007

    • Author(s)
      Y.Onuki
    • Organizer
      The 15th International Conference on Crystal Growth
    • Place of Presentation
      Salt Lake City,Utah,USA
    • Year and Date
      2007-08-13
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] High-quality single crystal growth and Fermi surface properties in f-electron systems.2007

    • Author(s)
      Y. Onuki
    • Organizer
      The 15th International Conference on Crystal Growth
    • Place of Presentation
      Salt Lake City, Utah, USA
    • Year and Date
      2007-08-13
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Potential and restriction of high resolution,high energy photoemission in 400-8,000 eV for studying strongly correlated electron systems2007

    • Author(s)
      S.Suga
    • Organizer
      15th Intern.Conf.Vacuum Ultraviolet Radiation Physics
    • Place of Presentation
      Berlin,Germany
    • Year and Date
      2007-07-30
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Potential and restriction of high resolution, high energy photoemission in 400-8, 000 eV for studying strongly correlatedelectron systems.2007

    • Author(s)
      S.Suga
    • Organizer
      15th International Conf. Vacuum Ultraviolet Radiation Physics
    • Place of Presentation
      Berlin Germany
    • Year and Date
      2007-07-30
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] High-Tc superconducting elements under very high pressures2007

    • Author(s)
      K.Shimizu
    • Organizer
      Workshop on The Road to Room Temperature Superconductivity
    • Place of Presentation
      Loen,Norway
    • Year and Date
      2007-06-22
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] High-Tc superconducting elements under very high pressures.2007

    • Author(s)
      K. Shimizu
    • Organizer
      Workshop on The Road to Room Temperature Superconductivity
    • Place of Presentation
      Loen, Norway
    • Year and Date
      2007-06-22
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Fermi surface revolution in CeRhln5 and non-centrosymmetric superconductivity in CeIrSi32007

    • Author(s)
      Y.Onuki
    • Organizer
      The Innernational Conference on Strongly Correlated ElectronS ystems
    • Place of Presentation
      Houston,USA
    • Year and Date
      2007-05-16
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Fermi surface revolution in CeRhIn_5 and non-centrosymmetric superconductivity in CeIrSi_32007

    • Author(s)
      Y. Onuki
    • Organizer
      The Innernational Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      Houston, USA
    • Year and Date
      2007-05-16
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] NMR Initiatives on Understanding High-Temperature Superconductivity2006

    • Author(s)
      Y.Kitaoka
    • Organizer
      The 17th International Conference on Magnetism (ICM 2006)
    • Place of Presentation
      京都
    • Year and Date
      20060820-25
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] NMR Initiatives on Understanding High-Temperature Superconductivity2006

    • Author(s)
      Y. Kitaoka
    • Organizer
      The 17th International Conference on Magnetism(ICM 2006)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      20060820-25
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Quantum Criticality of Valence Transition and Superconductivity2006

    • Author(s)
      K.Miyake
    • Organizer
      The 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors
    • Place of Presentation
      Dresden,Germany
    • Year and Date
      20060709-14
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Quantum Criticality of Valence Transition and Superconductivity2006

    • Author(s)
      K. Miyake
    • Organizer
      The 8th Intern. Conf. On Materials and Mechanisms of Superconductivity High Temperature Superconductors
    • Place of Presentation
      Dresden, Germany
    • Year and Date
      20060609-14
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Heavy Electrons due to Interstitial Degrees of Freedom2005

    • Author(s)
      K.Miyake
    • Organizer
      The 3rd Hiroshima Workshop on"Novel Functional Materials with Multinary Freedoms"
    • Place of Presentation
      東広島
    • Year and Date
      20051116-19
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Heavy Electrons due to Interstitial Degrees of Freedom2005

    • Author(s)
      K. Miyake
    • Organizer
      The 3rd Hiroshima Workshop on Novel Functional Materials with Multinary Freedoms
    • Place of Presentation
      Higashi-Hiroshima, Japan
    • Year and Date
      20051116-19
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Critical Valence Fluctuations and Unconventional Superconductivity2005

    • Author(s)
      K.Miyake
    • Organizer
      The 24th International Conference on Low Temperature Physics
    • Place of Presentation
      Orlando,USA
    • Year and Date
      20050810-17
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Critical Valence Fluctuations and Unconventional Superconductivity2005

    • Author(s)
      K. Miyake
    • Organizer
      The 24th International Conference on Low Temperature Physics
    • Place of Presentation
      Orlando, USA
    • Year and Date
      20050810-17
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] New Trends of Unconventional Superconductivity in Strollgly Correlated Electron Systems2005

    • Author(s)
      K.Miyake
    • Organizer
      The International Conference on StronglyCorrelated Electron Systems
    • Place of Presentation
      Wien,Australia
    • Year and Date
      20050726-30
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Very High Resolution Pyotoelectron Spectroscorpy(ed, by S. Huefner)2007

    • Author(s)
      A. Sekiyama
    • Total Pages
      22
    • Publisher
      Springer
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Carbon-Based Magnetism2006

    • Author(s)
      T.Makarova des.
    • Total Pages
      576
    • Publisher
      Elsevier
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] 計算機マテリアルデザイン門2005

    • Author(s)
      笠井 秀明ほか編
    • Total Pages
      397
    • Publisher
      大阪大学出版会
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 表面原子可視化装置2007

    • Inventor(s)
      関山 明, 菅 滋正
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Number
      特許権、特願2007-00523
    • Filing Date
      2007-01-12
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 超高速磁気記録法2006

    • Inventor(s)
      菅 滋正
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Number
      特許権、特願2006-356526
    • Filing Date
      2006-12-28
    • Description
      「研究成果報告書概要(和文)」より
  • [Patent(Industrial Property Rights)] 超高分解能希ガス光源2006

    • Inventor(s)
      菅 滋正
    • Industrial Property Rights Holder
      国立大学法人大阪大学
    • Industrial Property Number
      特許権、特願2006-253181
    • Filing Date
      2006-09-19
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2010-02-04  

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