dorsal/arxiv
View Schemas and d-wave symmetries of the solutions of the Eliashberg equations
| Authors | G. Santi, T. Jarlborg, M. Peter, M. Weger |
|---|---|
| Categories | |
| ArXiv ID | supr-con/9602002 |
| URL | https://arxiv.org/abs/supr-con/9602002 |
| DOI | 10.1016/0921-4534(96)00052-4 |
Abstract
We examine the different possible symmetries of the superconducting gap obtained by solving the Eliashberg equations. We consider an electron-phonon interaction in a strong coupling scenario. The Coulomb pseudopotential plays the crucial role of providing the repulsion needed to favour the d-wave symmetry. But the key parameter that allows very anisotropic solutions even with very strong coupling is the small angular range of the interaction due to predominantly electron-phonon forward scattering that is found in the high-Tc superconductors. We find both s and d-wave solutions whose stability depends mainly on the angular range of the interaction.
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"abstract": "We examine the different possible symmetries of the superconducting gap\nobtained by solving the Eliashberg equations. We consider an electron-phonon\ninteraction in a strong coupling scenario. The Coulomb pseudopotential plays\nthe crucial role of providing the repulsion needed to favour the d-wave\nsymmetry. But the key parameter that allows very anisotropic solutions even\nwith very strong coupling is the small angular range of the interaction due to\npredominantly electron-phonon forward scattering that is found in the high-Tc\nsuperconductors. We find both s and d-wave solutions whose stability depends\nmainly on the angular range of the interaction.",
"arxiv_id": "supr-con/9602002",
"authors": [
"G. Santi",
"T. Jarlborg",
"M. Peter",
"M. Weger"
],
"categories": [
"supr-con",
"cond-mat.supr-con"
],
"doi": "10.1016/0921-4534(96)00052-4",
"title": "s and d-wave symmetries of the solutions of the Eliashberg equations",
"url": "https://arxiv.org/abs/supr-con/9602002"
},
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