Title
Kink-antikink vortex transfer in periodic-plus-random pinning potential : theoretical analysis and numerical experiments Kink-antikink vortex transfer in periodic-plus-random pinning potential : theoretical analysis and numerical experiments
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
81(2010) :2
ISSN
1098-0121
1550-235X
ISI
000274002100087
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The influence of random pinning on the vortex dynamics in a periodic square potential under an external drive is investigated. Using numerical experiments and theoretical approach, we found several dynamical regimes of vortex motion that are different from the ones for a regular pinning potential. Vortex transfer is controlled by kinks and antikinks, which either pre-exist in the system or appear spontaneously in pairs and then propagate. When kinks and antikinks collide, they annihilate. We provide clear physical interpretations of the observed features.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/259cdd/acca2ba0.pdf
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