Local Density Approximation for Superconductors
作者： S Kurth , M Marques , M Lüders , EKU Gross , None
DOI: 10.1103/PHYSREVLETT.83.2628
关键词: Condensed matter physics 、 Dynamical mean field theory 、 Invariant (physics) 、 Physics 、 Density functional theory 、 Homogeneous 、 Local-density approximation 、 Fermi gas 、 Pairing 、 Superconductivity
摘要: A universal LDA-type density functional describing the electronic correlations in superconductors is developed from first principles. The constructed exchange-correlation free-energy density, ${f}_{\mathrm{xc}}^{\mathrm{hom}}$, of a homogeneous electron gas exposed to an external translationally invariant pairing field. quantity which function and induced order parameter, calculated by many-body perturbation theory.
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