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Current-voltage scaling of a Josephson-junction array at irrational frustration

Enzo Granato
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Abstract

Numerical simulations of the current-voltage characteristics of an ordered two-dimensional Josephson junction array at an irrational flux quantum per plaquette are presented. The results are consistent with an scaling analysis which assumes a zero temperature vortex glass transition. The thermal correlation length exponent characterizing this transition is found to be significantly different from the corresponding value for vortex-glass models in disordered two-dimensional superconductors. This leads to a current scale where nonlinearities appear in the current-voltage characteristics decreasing with temperature $T$ roughly as $T^2$ in contrast with the $T^3$ behavior expected for disordered models.

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Enzo Granato. 1996-08-21. Current-voltage scaling of a Josephson-junction array at irrational frustration. https://doi.org/10.1103/physrevb.54.r9655

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