Local Density Approximation for Superconductors

S. Kurth; M. Marques; M. Lüders; E. K. U. Gross

doi:10.1103/PhysRevLett.83.2628

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Local Density Approximation for Superconductors

S. Kurth, M. Marques, M. Lüders, E. K. U. Gross

DOI 10.1103/PhysRevLett.83.2628 · Physical Review Letters

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Abstract

A universal LDA-type density functional describing the electronic correlations in superconductors is developed from first principles. The functional is constructed from the exchange-correlation free-energy density, fxchom, of a homogeneous electron gas exposed to an external translationally invariant pairing field. The quantity fxchom, which is a function of the density and a functional of the induced order parameter, is calculated by many-body perturbation theory.

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