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arXiv · 1011.6642

Superinsulator as a phase of bi-particle localized states

J. Lages·D. L. Shepelyansky
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Abstract

We propose a physical picture of superinsulator observed recently in experiments with superconducting films in a magnetic field. On the basis of previous numerical studies we argue that a moderate attraction creates bi-particle localized states at intermediate disorder strength when noninteracting electron states are delocalized and metallic. Our present numerical study show that such localized pairs are broken by a static electric field which strength is above a certain threshold. We argue that such a breaking of localized pairs by a static field is at the origin of superinsulator breaking with a current jump observed experimentally above a certain critical voltage.

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J. Lages, D. L. Shepelyansky. 2010-11-30. Superinsulator as a phase of bi-particle localized states. https://doi.org/10.1140/epjb/e2011-20160-8

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