Abstract
A study of nonlinear magnetodynamic waves in antiferromagnetic materials is presented. Attention is restricted to an exact theory of electromagnetic waves along the single interface between a linear dielectric material and an antiferromagnetic crystal. The nonlinear motion equation for the TE waves is converted to the Bernoulli differential equation and its exact solution is found in a form of inverse function, and the exact dispersion relation is obtained. The necessary condition for the existence of the nonlinear TE surface wave is μxL>0. The dispersion equation and the frequency regime are analyzed. The theoretical results show that the peak position of the magnetic field is not a function of the effective index and is located steadily at the surface of the crystal, and in some cases one guided power corresponds to two different effective refraction indexes showing the bistable property of the waves.
Published Version
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