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History-dependent dissipative vortex dynamics in superconducting arrays

Authors
  • Durkin, Malcolm
  • Mondragon-Shem, Ian
  • Eley, Serena
  • Hughes, Taylor L.
  • Mason, Nadya
Type
Published Article
Publication Date
Apr 04, 2016
Submission Date
Dec 08, 2015
Identifiers
DOI: 10.1103/PhysRevB.94.024510
Source
arXiv
License
Yellow
External links

Abstract

We perform current(I)-voltage(V) measurements on low resistance superconductor-normal-superconductor arrays in finite magnetic fields, focusing on the dilute vortex population regime. We observe significant deviations from predicted behavior, notably the absence of a differential resistance peak near the vortex de-pinning current, and a broad linear I-V region with an extrapolated I intercept equal to the de-pinning current. Comparing these results to an overdamped molecular vortex model, we find that this behavior can be explained by the presence of a history dependent dissipative force. This approach has not been considered previously, yet is crucial for obtaining a correct description of the vortex dynamics in superconducting arrays.

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