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dc.contributor.authorColauto, Fabianopt_BR
dc.contributor.authorCarmo, Danusa dopt_BR
dc.contributor.authorAndrade, Antonio Marcos Helgueira dept_BR
dc.contributor.authorOliveira, Ana Augusta Mendonça dept_BR
dc.contributor.authorOrtiz, Wilson Airespt_BR
dc.contributor.authorJohansen, Tom Henningpt_BR
dc.date.accessioned2017-11-24T02:27:39Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/170566pt_BR
dc.description.abstractThe electrodynamic behavior of isotropic superconducting Nb films cooled below their critical temperature in the presence of in-plane applied magnetic fields is investigated using magneto-optical imaging. A specially designed local flux injector is used to show that the frozen-in in-plane vortices strongly guide and enhance the penetration of perpendicular vortices, whereas their penetration across the array of in-plane vortices is essentially unchanged. This result provides the key to understanding why field-cooled square superconducting films show anisotropic nucleation of flux avalanches (jumps) along the four edges. The explanation is based on an analytical model for thermomagnetic avalanche nucleation in type-II superconducting films, and allows one to understand the entire scenario of different flux dynamics observed experimentally.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 96, no. 6 (Aug. 2017), 060506, 5 p.pt_BR
dc.rightsOpen Accessen
dc.subjectSupercondutores tipo IIpt_BR
dc.subjectFilmes finos supercondutorespt_BR
dc.subjectFluxo magnéticopt_BR
dc.subjectNióbiopt_BR
dc.subjectAnisotropia magnéticapt_BR
dc.titleAnisotropic thermomagnetic avalanche activity in field-cooled superconducting filmspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001049660pt_BR
dc.type.originEstrangeiropt_BR


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