Depinning and critical current characteristics of topologically defected vortex lattices

We discuss the role of dislocation assemblies such as grain boundaries in the dynamic response of a driven vortex lattice. We simulate the depinning of a field-cooled vortex polycrystal and observe a general enhancement of the critical current as well as a distinct crossover in the characteristic of...

ver descrição completa

Detalhes bibliográficos
Autores: Moretti, Paolo, Miguel López, María del Carmen
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/125587
Acesso em linha:https://hdl.handle.net/2445/125587
Access Level:acceso abierto
Palavra-chave:Cristal·lografia
Superconductivitat
Crystallography
Superconductivity
id ES_5fa78a002f7ae6f79f8e3068c3cdb9d3
oai_identifier_str oai:recercat.cat:2445/125587
network_acronym_str ES
network_name_str España
repository_id_str
spelling Depinning and critical current characteristics of topologically defected vortex latticesMoretti, PaoloMiguel López, María del CarmenCristal·lografiaSuperconductivitatCrystallographySuperconductivityWe discuss the role of dislocation assemblies such as grain boundaries in the dynamic response of a driven vortex lattice. We simulate the depinning of a field-cooled vortex polycrystal and observe a general enhancement of the critical current as well as a distinct crossover in the characteristic of this quantity as a function of pinning density. The results agree with analytical predictions for grain-boundary depinning. The dynamics of grain boundaries thus proves an essential mechanism underlying the flow response of defected vortex lattices and the corresponding transport properties of the superconducting material. We emphasize the connection between the topological rearrangements of the lattice and its threshold dynamics. Our theory encompasses a variety of experimental observations in vortex matter as well as in colloidal crystalsAmerican Physical Society2018201820092018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion6 p.application/pdfhttps://hdl.handle.net/2445/125587Articles publicats en revistes (Física de la Matèria Condensada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevB.79.104505Physical Review B, 2009, vol. 79, num. 10, p. 1-6https://doi.org/10.1103/PhysRevB.79.104505(c) American Physical Society, 2009info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1255872026-05-29T05:05:01Z
dc.title.none.fl_str_mv Depinning and critical current characteristics of topologically defected vortex lattices
title Depinning and critical current characteristics of topologically defected vortex lattices
spellingShingle Depinning and critical current characteristics of topologically defected vortex lattices
Moretti, Paolo
Cristal·lografia
Superconductivitat
Crystallography
Superconductivity
title_short Depinning and critical current characteristics of topologically defected vortex lattices
title_full Depinning and critical current characteristics of topologically defected vortex lattices
title_fullStr Depinning and critical current characteristics of topologically defected vortex lattices
title_full_unstemmed Depinning and critical current characteristics of topologically defected vortex lattices
title_sort Depinning and critical current characteristics of topologically defected vortex lattices
dc.creator.none.fl_str_mv Moretti, Paolo
Miguel López, María del Carmen
author Moretti, Paolo
author_facet Moretti, Paolo
Miguel López, María del Carmen
author_role author
author2 Miguel López, María del Carmen
author2_role author
dc.subject.none.fl_str_mv Cristal·lografia
Superconductivitat
Crystallography
Superconductivity
topic Cristal·lografia
Superconductivitat
Crystallography
Superconductivity
description We discuss the role of dislocation assemblies such as grain boundaries in the dynamic response of a driven vortex lattice. We simulate the depinning of a field-cooled vortex polycrystal and observe a general enhancement of the critical current as well as a distinct crossover in the characteristic of this quantity as a function of pinning density. The results agree with analytical predictions for grain-boundary depinning. The dynamics of grain boundaries thus proves an essential mechanism underlying the flow response of defected vortex lattices and the corresponding transport properties of the superconducting material. We emphasize the connection between the topological rearrangements of the lattice and its threshold dynamics. Our theory encompasses a variety of experimental observations in vortex matter as well as in colloidal crystals
publishDate 2009
dc.date.none.fl_str_mv 2009
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/125587
url https://hdl.handle.net/2445/125587
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevB.79.104505
Physical Review B, 2009, vol. 79, num. 10, p. 1-6
https://doi.org/10.1103/PhysRevB.79.104505
dc.rights.none.fl_str_mv (c) American Physical Society, 2009
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2009
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 p.
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 Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869409223003078656
score 15,812429

Registos relacionados