On the effect of dislocation arrays on the superconducting transition temperature in HTSC

It is shown that arrays of edge dislocations with parallel Burgers vectors in the slip plane can lead to significant local changes in the transition t emperature T-c of the deformed crystals of high-temperature superconductors . These changes are due to the redistribution of free charge carriers in th e elastic strain fields of the ionic crystal lattice and a strong nonmonoto nic dependence of T-c on the concentration of charge carriers if the charac teristic length of dislocation arrays is much larger than the coherence len gth and screening radius. (C) 1998 American Institute of Physics. [S1063-77 7X(98)00311-9].