English

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

Superconductivity 2009-10-30 v1

Abstract

The solutions of a renormalized BCS equation are studied in three space dimensions in ss, pp and dd 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\xi and a large critical temperature, TcT_c, appropriate for some high-TcT_c materials. The BCS gap, TcT_c, ξ\xi and specific heat Cs(Tc)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 TcT_c in pp and dd waves.

Keywords

Cite

@article{arxiv.cond-mat/9709340,
  title  = {Universal scaling in BCS superconductivity in three dimensions in non-$s$ waves},
  author = {Angsula Ghosh and Sadhan K. Adhikari},
  journal= {arXiv preprint arXiv:cond-mat/9709340},
  year   = {2009}
}

Comments

9 pages of LATEX and 5 post-script figures. Accepted in European Physical Journal B