Monte Carlo Study of a Three--Dimensional Vortex Glass Model with Screening

C. Wengel and A.P. Young
Phys. Rev. B54, 6869 (1996).

We investigate the critical behavior of the gauge glass model for the vortex glass transition in three-dimensional superconductors, including screening of the interaction between vortices. A Monte Carlo study of the linear resistivity and a scaling analysis of current--voltage characteristics indicates that screening destroys the finite--temperature transition found earlier when screening was neglected. The correlation length exponent at the resulting zero temperature transition is found to be $\nu=1.05 \pm 0.1$.

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