Size of flux jumps in superconducting films

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dc.creatorShantsev, D. V.
dc.creatorBobyl, A. V.
dc.creatorGalperin, Y. M.
dc.creatorJohansen, T. H.
dc.creatorLee, S. I.
dc.date2005-05-06
dc.date.accessioned2026-07-07T03:05:05Z
dc.date.available2026-07-07T03:05:05Z
dc.descriptionMagneto-optical imaging is used to visualize vortex avalanches in MgB2 films at 4K. Avalanches ranging from 50 to 50000 vortices were detected. The size distribution function has a clear peak whose position moves towards larger sizes as the applied field increases. This field dependence as well as variation of flux density profile during an avalanche are well described by a proposed model assuming a thermal origin of the avalanches. The model is based on the adiabatic approach and takes into account nonlocal electrodynamics in thin superconductors. The threshold field for thermal avalanches is predicted to be much smaller than that for thick superconductors, in agreement with the experiment.
dc.description8 pages, 10 figures, submitted to PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/0505165
dc.identifierhttp://arxiv.org/abs/cond-mat/0505165
dc.identifierPhys. Rev. B 72, 024541 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.024541
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26324
dc.subjectSuperconductivity
dc.titleSize of flux jumps in superconducting films
dc.typetext

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