Title
Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder Formation of vortex clusters and giant vortices in mesoscopic superconducting disks with strong disorder
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of physics : conference series. - Bristol
Volume/pages
97(2008) , p. 012172,1-012172,6
ISSN
1742-6588
1742-6596
ISI
000276054100171
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Merged, or giant, multi-quanta vortices (GVs) appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we present evidence for a new, pinning-related, mechanism for vortex merger. Using Bitter decoration to visualise vortices in small Nb disks, we show that confinement in combination with strong disorder causes individual vortices to merge into clusters/GVs well below Tc and Hc2, in contrast to well-defined shells of individual vortices found in the absence of pinning.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/19b3ee/fb5d77ac.pdf
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