Commensurability effects in the critical forces of a superconducting film with Kagomé pinning array at submatching fields

Nicolas P. Vizarim (), Maicon Carlone, Lucas G. Verga and Pablo A. Venegas
Additional contact information
Nicolas P. Vizarim: POSMAT – Programa de Pós-Graduação em Ciência e Tecnologia de Materiais, Faculdade de Ciências, UNESP – Universidade Estadual Paulista
Maicon Carlone: POSMAT – Programa de Pós-Graduação em Ciência e Tecnologia de Materiais, Faculdade de Ciências, UNESP – Universidade Estadual Paulista
Lucas G. Verga: University of Southampton
Pablo A. Venegas: Departamento de Física, Faculdade de Ciências, UNESP – Universidade Estadual Paulista

The European Physical Journal B: Condensed Matter and Complex Systems, 2017, vol. 90, issue 9, 1-8

Abstract: Abstract Using molecular dynamics simulations, we find the commensurability force peaks in a two-dimensional superconducting thin-film with a Kagomé pinning array. A transport force is applied in two mutually perpendicular directions, and the magnetic field is increased up to the first matching field. Usually the condition to have pronounced force peaks in systems with periodic pinning is associated to the rate between the applied magnetic field and the first matching field, it must be an integer or a rational fraction. Here, we show that another condition must be satisfied, the vortex ground state must be ordered. Our calculations show that the pinning size and strength may dramatically change the vortex ground state. Small pinning radius and high values of pinning strength may lead to disordered vortex configurations, which fade the critical force peaks. The critical forces show anisotropic behavior, but the same dependence on pinning strength and radius is observed for both driven force directions. Different to cases where the applied magnetic field is higher than the first matching field, here the depinning process begins with vortices weakly trapped on top of a pinning site and not with interstitial vortices. Our results are in good agreement with recent experimental results.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1140/epjb/e2017-80260-y Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:90:y:2017:i:9:d:10.1140_epjb_e2017-80260-y

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2017-80260-y

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().