Title
Formation of stripelike flux patterns obtained by freezing kinematic vortices in a superconducting Pb filmFormation of stripelike flux patterns obtained by freezing kinematic vortices in a superconducting Pb film
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Condensed Matter Theory
Publication type
article
Publication
New York, N.Y.,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
104(2010):1
ISSN
0031-9007
ISI
000273881900033
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We demonstrate experimentally and theoretically that the dissipative state of superconducting samples with a periodic array of holes at high current densities consists of flux rivers resulting from a short-range attractive interaction between vortices. This dynamically induced vortex-vortex attraction results from the migration of quasiparticles out of the vortex core (kinematic vortices). We have directly visualized the formation of vortex chains by scanning Hall probe microscopy after freezing the dynamic state by a field cooling procedure at a constant bias current. Similar experiments carried out in a sample without holes show no hint of flux river formation. We shed light on this nonequilibrium phenomena modeled by time-dependent Ginzburg-Landau simulations.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/128acb/b6b5a97c.pdf
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