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Superinsulator as a phase of bi-particle localized states

  • J. Lages
  • D. L. ShepelyanskyEmail author
Regular Article
  • 70 Downloads

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.

Keywords

Static Force Coupling Energy Localize Pair Disorder Strength Inverse Participation Ratio 
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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Institut UTINAM, UMR CNRS 6213Université de Franche-ComtéBesançonFrance
  2. 2.Laboratoire de Physique Théorique du CNRS (IRSAMC)Université de Toulouse, UPSToulouseFrance

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