Eur. Phys. J. B 2, 31-36 (1998)
https://doi.org/10.1007/s100510050222

Universal scaling in BCS superconductivity in three dimensions in non-s waves

Instituto de Física Teórica, Universidade Estadual Paulista, 01.405-900 São Paulo, São Paulo, Brazil

Corresponding author: ^a adhikari@ift.unesp.br

Received: 18 July 1997
Revised: 8 September 1997
Accepted: 29 September 1997
Published online: 15 March 1998

Abstract

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.