Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers

Arrays of Ni nanodots embedded in Nb superconducting films have been fabricated by sputtering and electron-beam lithography techniques. The arrays are periodic triangular lattices of circular Ni dots arranged in a kagomélike pattern with broken reflection symmetry. Relevant behaviors are found in th...

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Detalles Bibliográficos
Autores: Perez de Lara, D., Alija, A., González Herrera, Elvira María, Velez, M., Martin, J. I., Vicent López, José Luis
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/42677
Acceso en línea:https://hdl.handle.net/20.500.14352/42677
Access Level:acceso abierto
Palabra clave:538.9
Regular array
Magnetic dots
Films
Lattice
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/42677
network_acronym_str ES
network_name_str España
repository_id_str
spelling Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centersPerez de Lara, D.Alija, A.González Herrera, Elvira MaríaVelez, M.Martin, J. I.Vicent López, José Luis538.9Regular arrayMagnetic dotsFilmsLatticeFísica de materialesFísica del estado sólido2211 Física del Estado SólidoArrays of Ni nanodots embedded in Nb superconducting films have been fabricated by sputtering and electron-beam lithography techniques. The arrays are periodic triangular lattices of circular Ni dots arranged in a kagomélike pattern with broken reflection symmetry. Relevant behaviors are found in the vortex lattice dynamics: i at values lower than the first integer matching field, several fractional matching fields are present when the vortex lattice moves parallel or perpendicular to the reflection symmetry axis of the array showing a clear anisotropic character in the magnetoresistance curves, ii injecting an ac perpendicular to the reflection symmetry axis of the array yields an unidirectional motion of the vortex lattice ratchet effect as a result of the interaction between the whole vortex lattice and the asymmetric lattice of dots, iii increasing the input current amplitudes the ratchet effect changes polarity independently of matching field values. These experimental results can be explained taking into account the vortex lattice density.American Physical SocietyUniversidad Complutense de Madrid20102010-11-0320102010-11-03journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/42677reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/426772026-06-02T12:44:21Z
dc.title.none.fl_str_mv Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
title Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
spellingShingle Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
Perez de Lara, D.
538.9
Regular array
Magnetic dots
Films
Lattice
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
title_full Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
title_fullStr Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
title_full_unstemmed Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
title_sort Vortex ratchet reversal at fractional matching fields in kagomelike array with symmetric pinning centers
dc.creator.none.fl_str_mv Perez de Lara, D.
Alija, A.
González Herrera, Elvira María
Velez, M.
Martin, J. I.
Vicent López, José Luis
author Perez de Lara, D.
author_facet Perez de Lara, D.
Alija, A.
González Herrera, Elvira María
Velez, M.
Martin, J. I.
Vicent López, José Luis
author_role author
author2 Alija, A.
González Herrera, Elvira María
Velez, M.
Martin, J. I.
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
Regular array
Magnetic dots
Films
Lattice
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Regular array
Magnetic dots
Films
Lattice
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description Arrays of Ni nanodots embedded in Nb superconducting films have been fabricated by sputtering and electron-beam lithography techniques. The arrays are periodic triangular lattices of circular Ni dots arranged in a kagomélike pattern with broken reflection symmetry. Relevant behaviors are found in the vortex lattice dynamics: i at values lower than the first integer matching field, several fractional matching fields are present when the vortex lattice moves parallel or perpendicular to the reflection symmetry axis of the array showing a clear anisotropic character in the magnetoresistance curves, ii injecting an ac perpendicular to the reflection symmetry axis of the array yields an unidirectional motion of the vortex lattice ratchet effect as a result of the interaction between the whole vortex lattice and the asymmetric lattice of dots, iii increasing the input current amplitudes the ratchet effect changes polarity independently of matching field values. These experimental results can be explained taking into account the vortex lattice density.
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-11-03
2010
2010-11-03
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/20.500.14352/42677
url https://hdl.handle.net/20.500.14352/42677
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_ 1869420918189588480
score 15,300724

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