Propagation of magnetostatic waves in the ferrite-type-II-superconductor structure with a longitudinal transport current

Within the framework of local approximation for the elastic energy of a vortex lattice, a correction to the dispersion and attenuation of magnetostatic waves (MSWs) in the tangentially magnetized ferrodielectric-type-II superconductor structure with a longitudinal transport current is calculated. This correction is associated with the interaction between MSWs and a system of Abrikosov vortices. It is shown that, depending on the direction of the wave vector, the attenuation of MSWs may either increase or decrease. This phenomenon is due to the variation of the elastic properties of the vortex lattice near the surface of the superconductor that results in a change in the penetration depth of the magnetic field of the MSW into the superconductor. Such a behavior of the attenuation is not of threshold character and can be observed even for a current whose magnitude is small compared with the critical longitudinal current.