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New Types of Surface Polaritons Induced by a Dynamic Magnetoelectric Interaction

The existence of surface polaritons in an insulator at its boundary with an ideal metal or a superconductor in a constant electric or (and) magnetic field has been 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. In crossed electric and magnetic fields the spectrum depends also on the ration H 0 / E 0 .