A new type of surface polaritons at the interface of the magnetic gyrotropic media

A new type of surface electromagnetic waves localized near the interface of the halves of the same transparent uniaxial magnetic gyrotropic medium is theoretically predicted. The gyration vectors of the halves are perpendicular to the interface and are oppositely directed to each other. Existence of such waves is due to both anisotropy of the medium and non-coincidence of the gyration vector directions on different sides of the interface. Distribution of intensity and variation of polarization of the surface polaritons as a function of the distance from the interface are studied. It is shown that the surface waves under consideration can be excited in uniformly magnetized ferromagnetics with axis of easy magnetization if their frequency does not exceed the magnetic resonance frequency.