History-dependent dissipative vortex dynamics in superconducting arrays

Malcolm Durkin, Ian Mondragon-Shem, Serena Eley, Taylor L. Hughes, Nadya Mason

Research output: Contribution to journalArticle

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 depinning current, and a broad linear I-V region with an extrapolated I intercept equal to the depinning 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, to our knowledge, yet it is crucial for obtaining a correct description of the vortex dynamics in superconducting arrays.

Original languageEnglish (US)
Article number024510
JournalPhysical Review B
Volume94
Issue number2
DOIs
StatePublished - Jul 14 2016

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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