Abstract
A theory of electromagnetic surface-wave propagation on a plane superconductor–vacuum interface is presented. On the basis of a nonlocal description taking into account the finite size of the pair-bound state, the transverse and longitudinal parts of the conductivity response tensor are analyzed. Special emphasis is given to a study of the quasi-particle scattering and the two-quasi-particle emission and absorption processes in the near-local regime, i.e., the regime where nonlocal effects are incorporated in lowest order. Within the framework of the well-known semiclassical infinite-barrier model, the hydrodynamic model, extended to include nonlocal effects in the divergence-free part of the response, is used to establish a simple analytical expression for the dispersion relation of surface waves on a Cooper-paired superconductor. Attention is paid to the frequency dispersion of the waves near the superconducting gap.
© 1990 Optical Society of America
Full Article | PDF ArticleMore Like This
David T. Wei
Appl. Opt. 28(14) 2718-2722 (1989)
Nina A. Zharova, Alexander A. Zharov, and Alexander A. Zharov
J. Opt. Soc. Am. B 33(4) 594-602 (2016)
Guifang Li and S. R. Seshadri
J. Opt. Soc. Am. B 7(6) 998-1012 (1990)