Title
Vortex interaction enhanced saturation number and caging effect in a superconducting film with a honeycomb array of nanoscale holesVortex interaction enhanced saturation number and caging effect in a superconducting film with a honeycomb array of nanoscale holes
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Condensed Matter Theory
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
85(2012):1, p. 012505,1-012505,4
ISSN
1098-0121
1550-235X
1098-0121
Article Reference
012505
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The electrical transport properties of a MoGe thin film with a honeycomb array of nanoscale holes are investigated. The critical current of the system shows nonmatching anomalies as a function of applied magnetic field, enabling us to distinguish between multiquanta vortices trapped in the holes and interstitial vortices located between the holes. The number of vortices trapped in each hole is found to be larger than the saturation number predicted for an isolated hole and shows a nonlinear field dependence, leading to the caging effect as predicted from the Ginzburg-Landau (GL) theory. Our experimental results are supplemented by numerical simulations based on the GL theory.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/cf67c9/1249.pdf
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