Rectification of surface polaritons in an insulator in a magnetic field at the boundary with a metal

Surface polaritons in a semi-infinite insulator in a constant magnetic field at the boundary with an ideal metal or a superconductor have been considered. These polaritons are induced by dynamic magnetoelectric interaction, which exists in any insulator in the presence of a magnetic field. The modes of these surface polaritons differ appreciably in opposite directions of the magnetic field or wave propagation. As a result, polaritons of a given optical or IR frequency propagate only in one direction due to the effect of rectification of surface electromagnetic waves. The inversion of the magnetic field results in the switching on or switching off of surface polaritons. (Author)