Theory for dirty superconductors. II. McMillan solution and Tc degradation

D. Belitz

doi:10.1103/PhysRevB.35.1651

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Theory for dirty superconductors. II. McMillan solution and Tc degradation

D. Belitz

DOI 10.1103/PhysRevB.35.1651 · Physical Review B

T1

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Abstract

For a recent strong-coupling theory for dirty superconductors, a solution for Tc of the McMillan type is obtained, which still contains complete disorder renormalizations of both anomalous and normal self-energies. All disorder effects leading to diffusion enhancement of vertices are calculated. The resulting Tc formula gives good account of the observed Tc degradation in high-Tc materials. A detailed discussion of the approximations used and of the relation to previous approaches is given.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	22	Pressure not reported	unknown
Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	5	Pressure not reported	unknown