Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect
Physical Review B - Condensed Matter and Materials Physics 65 巻
174502- 頁
2002 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect
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| 作成者 |
Kohmoto Mahito
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| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 65 |
| 開始ページ | 174502 |
| 抄録 |
Anisotropic pairing interactions mediated by phonons are examined in layer systems. It is shown that the screening effects become weaker when the layer spacing increases. Then the anisotropic components of the pairing interactions increase with the screening length since the momentum dependence changes. As a result, various types of anisotropic superconductivity occur depending on the parameter region. For example, p-wave superconductivity occurs when the short-range part of Coulomb repulsion is strong and the layer spacing is large. Two kinds of interlayer pairing may occur when the layer spacing is not too large. Although the phonon contribution to the d-wave pairing interaction is weaker than the p-wave interaction, it increases with the layer spacing. The relevance of the present results to organic superconductors, high-Tc cuprates, and Sr2RuO4 is discussed.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2002 |
| 権利情報 |
Copyright (c) 2002 The American Physical Society
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.65.174502
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.65.174502
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