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Resistance Anomaly in Disordered Superconducting Films | | J. Hua
; Z. L. Xiao
; D. Rosenmann
; I. S. Beloborodov
; U. Welp
; W. K. Kwok
; G. W. Crabtree
; | | Date: |
19 Jan 2007 | | Subject: | Superconductivity; Materials Science | | Abstract: | We report on a resistance anomaly in disordered superconducting films containing arrays of irregularly distributed nanoscale holes. At high driving currents, peaks appear in the resistance as a function of temperature, with peak values up to 2% above the classic normal-state resistance. We attribute the observed resistance anomaly to dissipation-induced granularity which enhances the contributions from fluctuation-induced reduction of the density of states of the quasiparticles. The granular feature of a disordered superconducting film originates from the inhomogeneous temperature distribution caused by the variation of the local dissipation and/or heat transfer. | | Source: | arXiv, cond-mat/0701483 | | Services: | Forum | Review | PDF | Favorites | |
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