Vortex cores in narrow thin-film strips

Vladimir G. Kogan, Masanori Ichioka

Research output: Contribution to journalArticlepeer-review

Abstract

We study vortex current distributions in narrow thin-film superconducting strips with the help of analytic expression of the vortex current derived within the London theory. Using definition of the vortex core “boundary” as a curve where the current reaches the depairing value, vortex core size and shape are estimated as a function of vortex position in the strip. We show that the core size near the strip edges is smaller than in the rest of the strip, indicating that the Bardeen–Stephen flux-flow resistivity should be reduced near the edges. Moreover, at elevated temperatures, when the depairing current is small, the vortex core may extend to the whole strip width, thus turning into an edge-to-edge phase-slip line.

Original languageEnglish
Article number094711
Journaljournal of the physical society of japan
Volume89
Issue number9
DOIs
Publication statusPublished - Aug 20 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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