Strong-coupling corrections in high-Tc superconductors
J. E. Jaffe
DOI 10.1103/PhysRevB.40.2558 · Physical Review B
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Abstract
The problem of determining the normal-state specific-heat coefficient γ for high-Tc oxide superconductors is considered, and a method for empirically determining the strong-coupling corrections is proposed. This permits a direct estimate of γ,λ,〈ω〉, and other parameters from a few measured quantities, if isotropic Eliashberg theory is assumed to apply. On this basis, it appears that conventional electron-phonon strong coupling can account for the superconducting properties of La1.85Sr0.15CuO4 but not those of YBa2Cu3O7−δ.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | unknown |
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