QUASI-CLASSICAL THEORY OF ROUGH-SURFACE EFFECTS ON UNCONVENTIONAL BCSSTATES

We present a quasi-classical theory of rough sur face effects on uncon ventional BCS pairing states. We reinterpret and generalize tile rando mly rippled wall model for rough surfaces such that call describe the surface scattering ranging from the specular limit to the diffusive li mit. We give a formal solution of the quasi-classical Green's function which already satisfies tile boundary condition in a slab geometry. i n the diffusive limit, our result correctly recovers the diffusive bou ndary condition for the GL equation in the p-wave state given by Ambeg aokar, deGennes and Rainer. Some applications to p-wave and d-wave sta tes are discussed.