Transport properties of clean and disordered Josephson junction arrays

Abstract

We investigate the influence of quantum fluctuations and weak disorder on the vortex dynamics in a two-dimensional superconducting Berezinskii-Kosterlitz-Thouless system. The temperature below which quantum fluctuations dominate the vortex creep is determined, and the transport in this quantum regime is described. The crossover from quantum to classical regime is discussed and the quantum correction to the classical current-voltage relation is determined. It is found that weak disorder can effectively reduce the critical current as compared to that in the clean system.

4 pages, 2 figures

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• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Broadening of the Beresinkii-Kosterlitz-Thouless superconducting transition by inhomogeneity and finite-size effects
• Electric field effect modulation of transition temperature, mobile carrier density and in-plane penetration depth in NdBa2Cu3O(7-delta) thin films
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Cited by in corpus (3)

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• Disordered BKT transition and superinsulation
• Magnetic field-dependent inhomogeneities and their effect on the magnetoresponse of 2D superconductors