Bose-Glass Behavior in Bi2Sr2Ca1-xYxCu2O8 Crystals with Columnar Defects: Experimental Evidence for Variable-Range Hopping

/ Authors

J. Soret, L. Ammor, V. T. Phuoc, R. D. Sousa, A. Ruyter, A. Wahl, G. Villard

/ Abstract

We report on vortex transport in Bi2Sr2Ca1-xYxCu2O8 crystals irradiated at different doses of heavy ions. We show evidence of a flux-creep resistivity typical of a variable-range vortex hopping mechanism as predicted by Nelson and Vinokur.

Journal: International Journal of Modern Physics B

DOI: 10.1016/S0038-1098(98)00600-0