Magnetic solitons in an antiferromagnetic waveguide

The properties of transverse magnetic (TM) waves propagating along a single interface between two semi-infinite nonlinear antiferromagnetic materials are investigated. The surface waves exist in the form of bright magnetic solitons. The frequency characteristics for the passband and stopband are analytically studied. We discuss the possibility of controlling the bandwidth of the passband which is determined by the parameters of the materials composing the guiding structure. We expect that the theoretical findings could provide ideas for exploring potential applications in terahertz region.