Influence of Plastic Deformations on Transport Characteristics of HTSC
Transport characteristics of a type-II superconductor depending on defect configuration and plastic deformations of sample have been investigated by using the Monte Carlo method. Series of voltage-current characteristics (VCC) of a BSCCO sample have been calculated for different number of cracks and point defects as well as different external magnetic field values. Dependencies of Jc on the number of cracks are demonstrated. Averaged vortex configurations have been acquired showing influence of cracks on movement of vortices and behavior of the VCCs. It has been observed that discontinuities can be found on a VCC that correspond with “freezing” of the vortex lattice in spaces between the cracks, while in all other cases a flow of the vortex lattice is seen.