Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect
Physical Review B - Condensed Matter and Materials Physics Volume 65
Page 174502-
published_at 2002
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| File | |
| Title ( eng ) |
Anisotropic superconductivity mediated by phonons in layered compounds with weak screening effect
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| Creator |
Kohmoto Mahito
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 65 |
| Start Page | 174502 |
| Abstract |
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 |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2002 |
| Rights |
Copyright (c) 2002 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[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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