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Theory of Superconductivity in Strong Correlated Electron Systems

Theory of Superconductivity in Strong Correlated Electron Systems
强相关电子系统中的超导理论
批准号:
12640346
负责人:
YAMADA Kosaku
金额:
$2.43万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2000
资助国家:
日本
项目状态:
已结题
起止时间:
2000 至 2002

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中文摘要
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英文摘要
This year we have made clear the following points.1. The microscopic superconducting mechanism in heavy fermion systems is studied by using the perturbation theory with respect to the onsite Coulomb repulsion U. We have succeeded in explaining the superconducting mechanism of CeCoIn_5, CeRhIn_5, UPd_2Al_3, UNi_2Al_3, CeCu_2Si_2 and CeIn_3. Our calculation derives the triplet pairing for UNi_2Al_3 in good agreement with the Knight shift measurement.2. The theory of superconductivity on Sr_2RuO_4 has been extended to the three band model and explained well the triplet pairing.Thus our strategy to study the superconductivity in strongly correlated electron systems is shown to be useful and has been developed.
期刊论文(33)
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会议论文
Y.Nisikawa, K.Yamada: "A Mechanism of Spin-Triplet Superconductivity in Hubbard Model on Triangular Lattice-Application to UNi_2Al_3"J. Phys. Soc. Jpn.. 71・11. 2629-2632 (2002)
Y. Nisikawa、K. Yamada:“三角形晶格的哈伯德模型中的自旋三重态超导机制 - 在 UNi_2Al_3 中的应用” J. Jpn.. 71・11 (2002)
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Y.Nishikawa, K.Yamada: "A Mechanism of Spin-Triplet Superconductivity in Hubbard Model on Triangular Lattice Application to BNi_2Al_3"J. Phys. Soc. Jpn.. 71・11. 2629-2632 (2002)
Y. Nishikawa,K. Yamada:“哈伯德模型中的自旋三重态超导机制在 BNi_2Al_3 中的应用” J. Jpn.. 71・11 (2002)
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H.Fukazawa, K.Yamada: "Third Order Perturbation Analysis of Paring Symmetry in Two-Dimensional Hubbard Model"J. Phys. Soc. Jpn.. 71・6. 1541-1547 (2002)
H.Fukazawa、K.Yamada:“二维哈伯德模型中的配对对称性的三阶微扰分析”J. Phys. 71・6 (2002)
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通讯作者:
T. Nomura, K. Yamada: "Roles of Electron Correlations in the Spin-Triplet Superconductivity of Sri_2RuO_4"J. Phys. Soc. Jpn.. 71・8. 1993-2004 (2002)
T. Nomura、K. Yamada:“Sri_2RuO_4 的自旋三重态超导性中的电子相关性”Jpn. 71・8 (2002)。
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33
    For Quantitative Estimation of Superconducting Temperature in Strongly Correlated Electron Systems
    • 批准号:
      18540348
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $0.79万
    • 财政年份:
      2006
    • 负责人:
      YAMADA Kosaku
    • 依托单位:
    Theory of Superconductivity in Strongly correlated Electron Systems
    • 批准号:
      15540340
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.3万
    • 财政年份:
      2003
    • 负责人:
      YAMADA Kosaku
    • 依托单位:
    Theory of Strong Coupling Superconductors
    • 批准号:
      10640342
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $1.86万
    • 财政年份:
      1998
    • 负责人:
      YAMADA Kosaku
    • 依托单位:
    海外基金