Vortex ratchet reversal: Role of interstitial vortices

Triangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex-lattice configuration different from the expected fundamental triangular "Abrikosov state" is found. The vortex motion, which prevails ag...

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Detalles Bibliográficos
Autores: Pérez de Lara, David, Erekhinsky, M., González Herrera, Elvira María, Rosen, Y. J., Schuller, Ivan K., Vicent López, José Luis
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/42675
Acceso en línea:https://hdl.handle.net/20.500.14352/42675
Access Level:acceso abierto
Palabra clave:538.9
Transport
Physics
Condensed Matter
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/42675
network_acronym_str ES
network_name_str España
repository_id_str
spelling Vortex ratchet reversal: Role of interstitial vorticesPérez de Lara, DavidErekhinsky, M.González Herrera, Elvira MaríaRosen, Y. J.Schuller, Ivan K.Vicent López, José Luis538.9TransportPhysicsCondensed MatterFísica de materialesFísica del estado sólido2211 Física del Estado SólidoTriangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex-lattice configuration different from the expected fundamental triangular "Abrikosov state" is found. The vortex motion, which prevails against the triangular periodic potential, is produced by channeling effects between triangles. Interstitial vortices coexisting with pinned vortices in this asymmetric potential lead to ratchet reversal, i.e., a dc output voltage that changes sign with the amplitude of an applied alternating drive current. In this landscape, ratchet reversal is always observed at all magnetic fields (all numbers of vortices) and at different temperatures. The ratchet reversal is unambiguously connected to the presence of two locations for the vortices: interstitial and above the artificial pinning sites.American Physical SocietyUniversidad Complutense de Madrid20112011-05-0920112011-05-09journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/42675reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/426752026-06-02T12:44:21Z
dc.title.none.fl_str_mv Vortex ratchet reversal: Role of interstitial vortices
title Vortex ratchet reversal: Role of interstitial vortices
spellingShingle Vortex ratchet reversal: Role of interstitial vortices
Pérez de Lara, David
538.9
Transport
Physics
Condensed Matter
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Vortex ratchet reversal: Role of interstitial vortices
title_full Vortex ratchet reversal: Role of interstitial vortices
title_fullStr Vortex ratchet reversal: Role of interstitial vortices
title_full_unstemmed Vortex ratchet reversal: Role of interstitial vortices
title_sort Vortex ratchet reversal: Role of interstitial vortices
dc.creator.none.fl_str_mv Pérez de Lara, David
Erekhinsky, M.
González Herrera, Elvira María
Rosen, Y. J.
Schuller, Ivan K.
Vicent López, José Luis
author Pérez de Lara, David
author_facet Pérez de Lara, David
Erekhinsky, M.
González Herrera, Elvira María
Rosen, Y. J.
Schuller, Ivan K.
Vicent López, José Luis
author_role author
author2 Erekhinsky, M.
González Herrera, Elvira María
Rosen, Y. J.
Schuller, Ivan K.
Vicent López, José Luis
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Transport
Physics
Condensed Matter
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Transport
Physics
Condensed Matter
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description Triangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex-lattice configuration different from the expected fundamental triangular "Abrikosov state" is found. The vortex motion, which prevails against the triangular periodic potential, is produced by channeling effects between triangles. Interstitial vortices coexisting with pinned vortices in this asymmetric potential lead to ratchet reversal, i.e., a dc output voltage that changes sign with the amplitude of an applied alternating drive current. In this landscape, ratchet reversal is always observed at all magnetic fields (all numbers of vortices) and at different temperatures. The ratchet reversal is unambiguously connected to the presence of two locations for the vortices: interstitial and above the artificial pinning sites.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-05-09
2011
2011-05-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/42675
url https://hdl.handle.net/20.500.14352/42675
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423577325895680
score 15,298079

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