Cascade dynamics of thermomagnetic avalanches in superconducting films with holes

Detalhes bibliográficos
Autor(a) principal: Vestgården, Jørn Inge
Data de Publicação: 2015
Outros Autores: Colauto, Fabiano, Andrade, Antonio Marcos Helgueira de, Oliveira, Ana Augusta Mendonça de, Ortiz, Wilson Aires, Johansen, Tom Henning
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/131420
Resumo: The submicrosecond dynamics of thermomagnetic avalanches in superconducting films with nonconducting holes (antidots) is considered.When such an avalanche reaches a hole, it is quickly filled with magnetic flux, and often its rim becomes unstable and a second avalanche is nucleated. In this work the time- and space-resolved behavior of such cascading avalanche behavior is determined using numerical simulations. Results are presented for films with holes of different shape. It is found that holes with sharp corners are those that most frequently create secondary avalanches, and they tend to nucleate in corners.Magneto-optical imaging of Nb films patterned with the same set of holes strongly supports the numerical results.
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spelling Vestgården, Jørn IngeColauto, FabianoAndrade, Antonio Marcos Helgueira deOliveira, Ana Augusta Mendonça deOrtiz, Wilson AiresJohansen, Tom Henning2015-12-25T02:39:57Z20151098-0121http://hdl.handle.net/10183/131420000980913The submicrosecond dynamics of thermomagnetic avalanches in superconducting films with nonconducting holes (antidots) is considered.When such an avalanche reaches a hole, it is quickly filled with magnetic flux, and often its rim becomes unstable and a second avalanche is nucleated. In this work the time- and space-resolved behavior of such cascading avalanche behavior is determined using numerical simulations. Results are presented for films with holes of different shape. It is found that holes with sharp corners are those that most frequently create secondary avalanches, and they tend to nucleate in corners.Magneto-optical imaging of Nb films patterned with the same set of holes strongly supports the numerical results.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 92, no. 14 (Oct. 2015), 144510, 5 p.Filmes finos supercondutoresSupercondutores tipo IIFluxo magnéticoEfeitos termomagneticosNióbioCascade dynamics of thermomagnetic avalanches in superconducting films with holesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000980913.pdf000980913.pdfTexto completo (inglês)application/pdf2584511http://www.lume.ufrgs.br/bitstream/10183/131420/1/000980913.pdfd3ec62f2b4f0c8b3b8bd52f1196c9a61MD51TEXT000980913.pdf.txt000980913.pdf.txtExtracted Texttext/plain19592http://www.lume.ufrgs.br/bitstream/10183/131420/2/000980913.pdf.txta4f617c1fd2bac48843098075fda63fbMD52THUMBNAIL000980913.pdf.jpg000980913.pdf.jpgGenerated Thumbnailimage/jpeg2227http://www.lume.ufrgs.br/bitstream/10183/131420/3/000980913.pdf.jpg0c5b4e77b246cb9385297cbc66e02ae9MD5310183/1314202023-07-01 03:38:40.077864oai:www.lume.ufrgs.br:10183/131420Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-01T06:38:40Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
title Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
spellingShingle Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
Vestgården, Jørn Inge
Filmes finos supercondutores
Supercondutores tipo II
Fluxo magnético
Efeitos termomagneticos
Nióbio
title_short Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
title_full Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
title_fullStr Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
title_full_unstemmed Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
title_sort Cascade dynamics of thermomagnetic avalanches in superconducting films with holes
author Vestgården, Jørn Inge
author_facet Vestgården, Jørn Inge
Colauto, Fabiano
Andrade, Antonio Marcos Helgueira de
Oliveira, Ana Augusta Mendonça de
Ortiz, Wilson Aires
Johansen, Tom Henning
author_role author
author2 Colauto, Fabiano
Andrade, Antonio Marcos Helgueira de
Oliveira, Ana Augusta Mendonça de
Ortiz, Wilson Aires
Johansen, Tom Henning
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Vestgården, Jørn Inge
Colauto, Fabiano
Andrade, Antonio Marcos Helgueira de
Oliveira, Ana Augusta Mendonça de
Ortiz, Wilson Aires
Johansen, Tom Henning
dc.subject.por.fl_str_mv Filmes finos supercondutores
Supercondutores tipo II
Fluxo magnético
Efeitos termomagneticos
Nióbio
topic Filmes finos supercondutores
Supercondutores tipo II
Fluxo magnético
Efeitos termomagneticos
Nióbio
description The submicrosecond dynamics of thermomagnetic avalanches in superconducting films with nonconducting holes (antidots) is considered.When such an avalanche reaches a hole, it is quickly filled with magnetic flux, and often its rim becomes unstable and a second avalanche is nucleated. In this work the time- and space-resolved behavior of such cascading avalanche behavior is determined using numerical simulations. Results are presented for films with holes of different shape. It is found that holes with sharp corners are those that most frequently create secondary avalanches, and they tend to nucleate in corners.Magneto-optical imaging of Nb films patterned with the same set of holes strongly supports the numerical results.
publishDate 2015
dc.date.accessioned.fl_str_mv 2015-12-25T02:39:57Z
dc.date.issued.fl_str_mv 2015
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/131420
dc.identifier.issn.pt_BR.fl_str_mv 1098-0121
dc.identifier.nrb.pt_BR.fl_str_mv 000980913
identifier_str_mv 1098-0121
000980913
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 92, no. 14 (Oct. 2015), 144510, 5 p.
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