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Current--Voltage Characteristics of Two--Dimensional Vortex Glass Models

R. A. Hyman·M. Wallin·M. P. A. Fisher·S. M. Girvin·A. P. Young
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Abstract

We have performed Monte Carlo simulations to determine current--voltage characteristics of two different vortex glass models in two dimensions. The results confirm the conclusions of earlier studies that there is a transition at $T=0$. In addition we find that, as $T\to 0$, the linear resistance vanishes exponentially, and the current scale, $J_{nl}$, where non-linearities appear in the $I$--$V$ characteristics varies roughly as $T^3$, quite different from the predictions of conventional flux creep theory, $J_{nl} \sim T$. The results for the two models agree quite well with each other, and also agree fairly well with recent experiments on very thin films of YBCO.

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R. A. Hyman, M. Wallin, M. P. A. Fisher, S. M. Girvin, A. P. Young. 1994-10-12. Current--Voltage Characteristics of Two--Dimensional Vortex Glass Models. https://doi.org/10.1103/physrevb.51.15304

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