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Microscopic Investigation of the coexistence state of Magnetism and Superconductivity in Uranium-based Heavy-Fermion Superconductors

Microscopic Investigation of the coexistence state of Magnetism and Superconductivity in Uranium-based Heavy-Fermion Superconductors
铀基重费米子超导体磁性与超导共存状态的显微研究
批准号:
20340088
负责人:
ISHIDA Kenji
金额:
$12.65万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2008
资助国家:
日本
项目状态:
已结题
起止时间:
2008 至 2010

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中文摘要
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英文摘要
We have studied coexistence of ferromagnetism and superconductivity in ferromagnetic superconductor of UCoGe from the microscopic NMR measurement using a high-quality single crystal. Below the ferromagnetic transition, whole region of the sample is in ferromagnetic state, and a nearly half of the region becomes superconductive below Tc. We also have investigated magnetic fluctuations in the compound, and found that longitudinal ferromagnetic fluctuations along the ordered moments directed to the c axis is dominant at low temperatures. The magnetic fluctuations we observed have been suggested to be favorable for spin-triplet superconductivity from theoretical point of view. These results suggest the possibility that spin-triplet superconductivity is realized in UCoGe.
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DOI: 10.1143/jpsj.78.113705
发表时间: 2009-09
期刊: Journal of the Physical Society of Japan
影响因子: 1.7
作者: [H. Sugawara;K. Ishida;Y. Nakai;H. Yanagi;T. Kamiya;Y. Kamihara;M. Hirano;H. Hosono]
通讯作者: H. Sugawara;K. Ishida;Y. Nakai;H. Yanagi;T. Kamiya;Y. Kamihara;M. Hirano;H. Hosono
超伝導と磁性の共存
超导性与磁性的共存
DOI: --
发表时间: 2011
期刊: パリティ Vol.26 No.1
影响因子: --
作者: [M. Yamashita, N. Nakata, Y. Kasahara, T. Sasaki, N. Yoneyama, N. Kobayashi, S. Fujimoto, T. Shibauchi and Y. Matsuda, 石田憲二]
通讯作者: 石田憲二
<59>^Co-NMRを用いた単結晶UCoGeの異方的磁気励起の研究
<59>^ 利用 Co-NMR 研究单晶 UCoGe 的各向异性磁激发
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者: [井原慶彦, 服部泰佑, 軽部皓介, 石田憲二, 田村暢之, 出口和彦, 佐藤憲昭, 佐藤伊佐務]
通讯作者: 佐藤伊佐務
DOI: 10.1103/physrevb.81.020503
发表时间: 2009-08
期刊: Physical Review B
影响因子: 3.7
作者: [Y. Nakai;T. Iye;S. Kitagawa;K. Ishida;S. Kasahara;T. Shibauchi;Y. Matsuda;T. Terashima]
通讯作者: Y. Nakai;T. Iye;S. Kitagawa;K. Ishida;S. Kasahara;T. Shibauchi;Y. Matsuda;T. Terashima
44
    Studies on strongly correlated electron superconductors coexisting and/or competing with magnetism
    • 批准号:
      23244075
    • 项目类别:
      Grant-in-Aid for Scientific Research (A)
    • 资助金额:
      $30.95万
    • 财政年份:
      2011
    • 负责人:
      ISHIDA Kenji
    • 依托单位:
    Electrical and structural characterization of CuPc/P(VDF/TrFE)/C60
    • 批准号:
      23655177
    • 项目类别:
      Grant-in-Aid for Challenging Exploratory Research
    • 资助金额:
      $2.66万
    • 财政年份:
      2011
    • 负责人:
      ISHIDA Kenji
    • 依托单位:
    A study on countermeasure technologies against information leakage through information networks
    • 批准号:
      19560392
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.16万
    • 财政年份:
      2007
    • 负责人:
      ISHIDA Kenji
    • 依托单位:
    Relationship between unconventional superconducting phase and magnetic phase in strongly correlated electron compounds
    • 批准号:
      18340102
    • 项目类别:
      Grant-in-Aid for Scientific Research (B)
    • 资助金额:
      $10.7万
    • 财政年份:
      2006
    • 负责人:
      ISHIDA Kenji
    • 依托单位:
    海外基金