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Macroscopic fluctuations in the boundary resistance of metal-superconductor interfaces

Lambert, Colin and Robinson, S. J. (1993) Macroscopic fluctuations in the boundary resistance of metal-superconductor interfaces. Physical Review B, 48 (14). pp. 10391-10394. ISSN 0163-1829

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Abstract

We examine the possibility of macroscopic fluctuations in the electrical resistance R of a disordered mesoscopic superconductor. A Perturbative argument shows that in the presence of phase fluctuations, quantum interference can cause the Andreev scattering amplitude to vanish, leading to a 1/R2 tail in the probability distribution for R. Consequently no moments exist and the boundary resistance exhibits large fluctuations. This prediction is confirmed by numerical simulations on superconducting loops, connected to external reservoirs by point contacts.

Item Type: Article
Journal or Publication Title: Physical Review B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 58130
Deposited By: ep_importer_pure
Deposited On: 24 Oct 2012 13:51
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:08
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58130

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