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Charge Transport Transitions and Scaling in Disordered Arrays of Metallic Dots

C. Reichhardt·C. J. Olson Reichhardt
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Abstract

We examine the charge transport through disordered arrays of metallic dots using numerical simulations. We find power law scaling in the current-voltage curves for arrays containing no voids, while for void-filled arrays charge bottlenecks form and a single scaling is absent, in agreement with recent experiments. In the void-free case we also show that the scaling exponent depends on the effective dimensionality of the system. For increasing applied drives we find a transition from 2D disordered filamentary flow near threshold to a 1D smectic flow which can be identified experimentally using characteristics in the transport curves and conduction noise.

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C. Reichhardt, C. J. Olson Reichhardt. 2002-05-25. Charge Transport Transitions and Scaling in Disordered Arrays of Metallic Dots. https://doi.org/10.1103/physrevlett.90.046802

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