Abstract

We investigate a lateral shift of the reflected beam on reflection of far-infrared radiation, at oblique incidence, off an antiferromagnet in an external magnetic field, at frequencies close to the magnon resonances. This shift is nonreciprocal and depends on the direction of the applied field. It occurs both at bulk and reststrahlen frequencies, with or without damping. We illustrate this effect using simulations of reflection off MnF2 at low temperature.

© 2011 Optical Society of America

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