Title
Unconventional dynamics of vortex shells in mesoscopic superconducting corbino disksUnconventional dynamics of vortex shells in mesoscopic superconducting corbino disks
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Condensed Matter Theory
Publication type
article
Publication
Amsterdam,
Subject
Physics
Source (journal)
Physica: C: superconductivity. - Amsterdam
Volume/pages
470(2010):19, p. 939-941
ISSN
0921-4534
ISI
000282454400059
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The dynamics of vortex matter in mesoscopic superconducting Corbino disk is strongly influenced by the discrete vortex structure arranged in shells. While in previous works the vortex dynamics has been studied in large (macroscopic) and in very small mesoscopic disks (containing only few shells), in the intermediate-size regime it is much more complex and unusual, due to: (i) the competition between the vortexvortex interaction and confinement and (ii) (in)commensurability among the vortex shells. We found that the interplay between these effects can result in a very unusual vortex dynamical behavior: (i) unconventional angular melting (i.e., propagating from the boundary, where the shear stress is minimum, towards the center) and (ii) unconventional dynamics of shells (i.e., the inversion of shell velocities with respect to the gradient driving force). This unusual behavior is found for different number of shells.
E-info
https://repository.uantwerpen.be/docman/iruaauth/393d2d/9c3a0354df1.pdf
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