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 much less than T-c, both ''slow'' dislocations are considered, which interact only with thermally excited quasiparticles, and ''fast'' dis locations which also break the Cooper pairs. Near the critical tempera ture, two limiting cases are considered depending on the relation betw een Meissner penetration depth and anomalous skin-layer depth for the dislocation-induced electromagnetic field. Power dissipation dependenc e on temperature and dislocation velocity is obtained. Due to low fiel d intensity in the short-wave part of spectrum, the superconducting st ate is shown not to be destructed by a moving dislocation in a broad r ange of temperatures. Non-equilibrium states of electronic system crea ted by the dislocation field are analyzed in the paper. With this purp ose, Eliashberg's kinetic equation for a multi-mode excitation source is used. Dislocation field is show to reduce the order parameter when T much less than T-c, or stimulate superconductivity when (T - T-c)/T- c much less than 1. Damping reduction due to stimulation effect is dis cussed. Power dissipation dependence on the dislocations concentration in non-equilibrium state is obtained.