Y. Zhao et al., EFFECT OF WEAK LINKS ON THE SCALING BEHAVIOR OF IV-CURVES IN A MELT-TEXTURED YBA2CU3O7-Y SYSTEM, Physics letters. A, 203(1), 1995, pp. 53-57
The scaling behaviour of I-V characteristics has been studied in melt-
textured YBa2Cu3O7-gamma samples with and without weak links, at diffe
rent temperatures and magnetic fields. The I-V curves are found to obe
y the scaling behaviour of the vortex-glass transition, but the transi
tion temperature and the scaling exponent are different for these two
kinds of samples,The results have been explained with vortex-glass tra
nsition in intergranular and intragranular regions.