I-V Characteristics of High Temperature Superconductors with Columnar Defects

Abstract

The vortex glass transition in the presence of columnar defects is studied by Monte Carlo simulations of a vortex loop model, suggested by the analogy to the $T=0$ superconductor-insulator transition for dirty bosons in (2+1)D. From finite-size scaling analysis of the $I$-$V$ characteristic we find two dynamical exponents describing the non-equilibrium behavior. We obtain $z_{\perp }=6\pm 0.5$ and $z_{\parallel }=4\pm 0.5$ when the current is applied perpendicular and parallel to the columnar defects respectively.

11 pages, 2 postscript included, latex using revtex version 3

References in corpus (1)

• Elastic String in a Random Potential

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