W. Jahn et al., EFFECT OF CORRELATED AND POINT-LIKE DISORDER ON TRANSPORT-PROPERTIES OF YBA2CU3O7-DELTA SINGLE-CRYSTALS, Journal of low temperature physics, 105(5-6), 1996, pp. 1177-1182
Pinning by point-like defects and twin boundaries in single-crystallin
e YBa2Cu3O7-delta has been investigated by measuring resistance and cu
rrent-voltage characteristics in fields up to 5 T. A number of untwinn
ed and twinned samples with different densities of point-like defects
were studied. The experimental results are compared within the framewo
rk of vortex-entanglement.