Superconductivity in the two-dimensional Hubbard model close to the metal-insulator transition: A strong-coupling description
Janusz Zieliński, Marcin Mierzejewski, Peter Entel
DOI 10.1103/PhysRevB.57.10311 · Physical Review B
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Abstract
We discuss the problem of phonon-induced superconductivity in the two-dimensional Hubbard model close to the metal-insulator transition. The Coulomb correlations have been taken into account within the Hubbard I approximation, whereas superconductivity is treated by the Eliashberg scheme. The superconducting transition temperature has been evaluated for the anisotropic s-wave and d-wave channels. Results support the view that the gap function is of mixed, d+s wave, symmetry but with a dominating d-wave component.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBCO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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