Publicação: Universal scaling in BCS superconductivity in three dimensions in non-s waves
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The solutions of a renormalized BCS equation are studied in three space dimensions in s, p and d waves for finite-range separable potentials in the weak to medium coupling region. In the weak-coupling limit, the present BCS model yields a small coherence length ξ and a large critical temperature, T c, appropriate for some high-T c materials. The BCS gap, T c, ξ and specific heat C s(T c) as a function of zero-temperature condensation energy are found to exhibit potential-independent universal scalings. The entropy, specific heat, spin susceptibility and penetration depth as a function of temperature exhibit universal scaling below T c in p and d waves.
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74.20.Fg BCS theory and its development, 74.72.-h High-T c compounds, Condensation, Entropy, Mathematical models, Specific heat of solids, Superconducting transition temperature, Superconductivity, Thermal effects, Bardeen Cooper Schrieffer theory, High temperature superconductors
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Inglês
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European Physical Journal B, v. 2, n. 1, p. 31-36, 1998.
