Surface waves on a strong-coupling superconductor

Abstract

A theory of electromagnetic surface wave propagation on a plane superconductor-vacuum interface is presented for superconductor with strong-coupling. The resutls of self-consistent euqation for eneryg of elementary excitations obtined in the framework of modified u-v transformation method.On the basis of a non-local description taknig into account the finite size of the pair-bound state, the linear resopnse tensor is analyzed. Within the framework of semi-classifcal infinite-barrier model the surface waves dispersion relations are the analyztically and numerically calculated for teh case of strong-coupling superconductor.