Anisotropic thermomagnetic avalanche activity in field-cooled superconducting films
dc.contributor.author | Colauto, Fabiano | pt_BR |
dc.contributor.author | Carmo, Danusa do | pt_BR |
dc.contributor.author | Andrade, Antonio Marcos Helgueira de | pt_BR |
dc.contributor.author | Oliveira, Ana Augusta Mendonça de | pt_BR |
dc.contributor.author | Ortiz, Wilson Aires | pt_BR |
dc.contributor.author | Johansen, Tom Henning | pt_BR |
dc.date.accessioned | 2017-11-24T02:27:39Z | pt_BR |
dc.date.issued | 2017 | pt_BR |
dc.identifier.issn | 1098-0121 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/170566 | pt_BR |
dc.description.abstract | The 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 96, no. 6 (Aug. 2017), 060506, 5 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Supercondutores tipo II | pt_BR |
dc.subject | Filmes finos supercondutores | pt_BR |
dc.subject | Fluxo magnético | pt_BR |
dc.subject | Nióbio | pt_BR |
dc.subject | Anisotropia magnética | pt_BR |
dc.title | Anisotropic thermomagnetic avalanche activity in field-cooled superconducting films | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001049660 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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