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Spatial decay of the quasiparticle current in phase-slip centers

Spatial decay of the quasiparticle current in phase-slip centers We have studied the diffusive current of quasiparticles in long superconducting tin microbridges in two different experiments. In the first experiment, the influence of quasiparticle current generated by one phase-slip center upon the appearance of other phase-slip centers in the same microbridge is examined. In the second experiment, the spatial dependence of the chemical potential of the quasiparticles generated in a single phase-slip center is measured directly. The results of these experiments demonstrate conclusively the exponential decay of both the quasiparticle current and potential from the center of the phase-slip center, and the measured values of the characteristic diffusion length agree well with theoretical predictions, both in magnitude and temperature dependence. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Spatial decay of the quasiparticle current in phase-slip centers

Journal of Low Temperature Physics , Volume 51 (2) – Nov 6, 2004

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References (16)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00683422
Publisher site
See Article on Publisher Site

Abstract

We have studied the diffusive current of quasiparticles in long superconducting tin microbridges in two different experiments. In the first experiment, the influence of quasiparticle current generated by one phase-slip center upon the appearance of other phase-slip centers in the same microbridge is examined. In the second experiment, the spatial dependence of the chemical potential of the quasiparticles generated in a single phase-slip center is measured directly. The results of these experiments demonstrate conclusively the exponential decay of both the quasiparticle current and potential from the center of the phase-slip center, and the measured values of the characteristic diffusion length agree well with theoretical predictions, both in magnitude and temperature dependence.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Nov 6, 2004

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