title: Vortex viscosity in magnetic superconductors due to radiation of spin waves.
abstract: In type-II superconductors that contain a lattice of magnetic moments, vortices polarize the magnetic system inducing additional contributions to the vortex mass, vortex viscosity, and vortex-vortex interaction. Extra magnetic viscosity is caused by radiation of spin waves by a moving vortex. Like in the case of Cherenkov radiation, this effect has a characteristic threshold behavior and the resulting vortex viscosity may be comparable to the well-known Bardeen-Stephen contribution. The threshold behavior leads to an anomaly in the current-voltage characteristics, and a drop in dissipation for a current interval that is determined by the magnetic excitation spectrum.
authors.affiliation: National High Magnetic Field Lab, Tallahassee, Florida 32310, USA.
authors.forename: A
authors.initials: A
authors.lastname: Shekhter
authors.forename: L N
authors.initials: LN
authors.lastname: Bulaevskii
authors.forename: C D
authors.initials: CD
authors.lastname: Batista