Electronic damping of dislocations and kinetic phenomena in superconductors under plastic deformation

Interaction of a moving screw dislocation with conduction electrons is considered in the conventional pure superconductors. At temperatures T << Tc, both open-quotes slowclose quotes dislocations are considered, which interact only with thermally excited quasiparticles, and open-quotes fastclose quotes dislocations which also break the Cooper pairs. Near the critical temperature, two limiting cases are considered depending on the relation between Meissner penetration depth and anomalous skin-layer depth for the dislocation-induced electromagnetic field. Power dissipation dependence on temperature and dislocation velocity is obtained. Due to low field intensity in the short-wave part of spectrum, the superconducting state is shown not to be destructed by a moving dislocation in a broad range of temperatures. Non-equilibrium states of electronic system created by the dislocation field are analyzed in the paper. With this purpose, Eliashberg's kinetic equation for a multi-mode excitation source is used. Dislocation field is shown to reduce the order parameter when T << Tc, or stimulate superconductivity when (T-Tc)/Tc<<1. Damping reduction due to stimulation effect is discussed. Power dissipation dependence on the dislocations concentration in non-equilibrium state is obtained