Switching and Rectification of Phonon Polaritons of an Insulator at Its Boundary With a Metal.

摘要

The existence of surface polaritons in an insulator at its boundary with an ideal metal or a superconductor in a constant electric or magnetic field is predicted. The modes of these surface polaritons appreciably differ in opposite directions of the field, so that a change in the direction of the field signifies 'switching on' or 'switching off' of surface polaritons. In the presence of a magnetic field polaritons of a given frequency propagate only in one direction with respect to the magnetic field, which is the effect of rectification. The existence of a radiant surface polariton modes is predicted.