Bulk spin-wave electrodynamics of an antiferromagnetic plate in a constant external electric field

摘要

Using the example of a plate of an easy-axis centrosymmetric antiferromagnet, the conditions are determined under which an external constant electric field qualitatively changes not only the character of refraction of a bulk TM wave incident from vacuum onto the antiferromagnet surface but also the structure of the spectrum of propagating bulk magnons. The relation of the discovered effects to the shape of the refraction surface of TM polaritons is studied.