Impurity Effect in High-T_c Superconductors : A Consistent Analysis by d-Wave Superconducting Model
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概要
- 論文の詳細を見る
The contrast between Zn- and Ni-impurity effects in YBa_2Cu_3O_7 and the imperfection-induced gapless superconductivity in Bi_2Sr_2CaCu_2O_8 reported previously are quantitatively analyzed based on the d-wave superconducting model. By taking account of the fact that the Zn impurity which caused the gapless superconductivity acts as a unitarity or strong scatterer, it is demonstrated that the Ni impurity does not give rise to the gapless superconductivity, although it is not so weak as to be treated in terms of Born scattering. The d-wave model can explain the characteristic feature such that even though T_c is moderately reduced by impurity scattering, the superconductivity changes into the gapless type with a finite density of states at the Fermi level.
- 社団法人日本物理学会の論文
- 1994-06-15
著者
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ISHIDA Kenji
Department of Physics, Graduate School of Science, Kyoto University
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KITAOKA Yoshio
Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka Universit
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Asayama Kunisuke
Department of Material Physics, Faculty of Engineering Science, Osaka University
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Asayama Kunisuke
Department Of Physical Science Graduate School Of Engineering Science Osaka University
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Asayama Kunisuke
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kohori Y
Chiba Univ. Chiba
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Karaki Y
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kitaoka Yoshio
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Ishida Kenji
Department Of Orthopaedic Surgery Kochi Medical School
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Ishida Kenji
Department Of Chemical Science And Engineering Graduate School Of Engineering Kobe University
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Asayama Kunisuke
Department of Material Physics, Faculty of Engineering Science, Osaka University:Presently Professor Emeritus of Osaka University
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Ishida Kenji
Department of Applied Chemistry, Ibaraki University
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