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Abstract:

Flux dynamics in a high Tc superconducting thin film is investigated in the ns time scale. The initial metastable state is determined by applying a pulsed magnetic field to a sample previous cooled below the irreversibility line. Selective local heating of the film with a pulsed laser spot lowers the vortex pinning force suddenly. The magnetic flux rearrangements that follow generate a voltage pulse between two contacts on the zero current biased sample. Detail simulations were performed in the framework of a phenomenological model based on Maxwell Equations with constitutive relations for creep and flux flow that fully describe the observed voltage signals. © 2003 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Time resolved nanosecond vortex dynamics in high Tc superconducting films
Autor:Ferrari, H.; Ibaceta, D.; Bekeris, V.; Calzetta, E.; Correra, L.
Filiación:Departamento de Física, Universidad Nacional de Buenos Aires, Laboratorio de Bajas Temperaturas, (1428) Buenos Aires, Argentina
C.N.R.-L.A.M.E.L., Via Gobetti 101, 40129 Bologna, Italy
Palabras clave:Critical currents; Flux creep; Flux pinning; Vortex dynamics; Computer simulation; Critical currents; Electric potential; Heating; High temperature superconductors; Magnetic fields; Magnetic flux; Maxwell equations; Flux creep; Flux pinning; Vortex dynamics; Superconducting films
Año:2004
Volumen:44
Número:1
Página de inicio:29
Página de fin:35
DOI: http://dx.doi.org/10.1016/j.cryogenics.2003.07.002
Título revista:Cryogenics
Título revista abreviado:Cryogenics
ISSN:00112275
CODEN:CRYOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00112275_v44_n1_p29_Ferrari

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Citas:

---------- APA ----------
Ferrari, H., Ibaceta, D., Bekeris, V., Calzetta, E. & Correra, L. (2004) . Time resolved nanosecond vortex dynamics in high Tc superconducting films. Cryogenics, 44(1), 29-35.
http://dx.doi.org/10.1016/j.cryogenics.2003.07.002
---------- CHICAGO ----------
Ferrari, H., Ibaceta, D., Bekeris, V., Calzetta, E., Correra, L. "Time resolved nanosecond vortex dynamics in high Tc superconducting films" . Cryogenics 44, no. 1 (2004) : 29-35.
http://dx.doi.org/10.1016/j.cryogenics.2003.07.002
---------- MLA ----------
Ferrari, H., Ibaceta, D., Bekeris, V., Calzetta, E., Correra, L. "Time resolved nanosecond vortex dynamics in high Tc superconducting films" . Cryogenics, vol. 44, no. 1, 2004, pp. 29-35.
http://dx.doi.org/10.1016/j.cryogenics.2003.07.002
---------- VANCOUVER ----------
Ferrari, H., Ibaceta, D., Bekeris, V., Calzetta, E., Correra, L. Time resolved nanosecond vortex dynamics in high Tc superconducting films. Cryogenics. 2004;44(1):29-35.
http://dx.doi.org/10.1016/j.cryogenics.2003.07.002