Impurity Effect on Flux-Flow Resistivity in Gapless Superconductors

Abstract
The flux-flow resistivity ρf has been calculated for gapless superconductors with arbitrary amounts of magnetic and nonmagnetic scattering. The most striking result occurs in the limit of low concentrations of magnetic impurities, where the initial slope of ρf with respect to the applied magnetic field may range from zero to infinity depending on the amount of nonmagnetic scattering.