Chiral feedback for p-wave superconductors

Abstract

In a quasi-two-dimensional $p$-wave superconductor there find six Cooper pairing states which are degenerate within the weak-coupling approach. We show that this degeneracy can be lifted by feedback effect favoring the so-called chiral $p$-wave state. This effect is based on the anomalous coupling between charge and current in a system with broken time reversal symmetry and parity.

6 pages, 1 table and 2 eps figures, LaTeX, corrected some typos. Accepted for publication in J. Phys. C