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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
1997
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/cond-mat/9706010 |
| Etiquetas: |
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- We prove that the upper electronic bands of k-phase BEDT-TTF salts are adequately modeled by an half-filled tight-binding lattice with one site per cell. The band parameters are derived from recent ab-initio calculations, getting a very simple but extremely accurate one-electron picture. This picture allows us to solve the BCS gap equation adopting a real-space pairing potential. Comparison of the calculated superconducting properties with the experimental data points to isotropic s_0-pairing. Residual many-body or phonon-mediated interactions offer a plausible explanation of the large variety of physical properties observed in k-phase BEDT-TTF salts.