Curva voltaje-tiempo en un proceso aniquilación-creación de pares vórtice-antivórtice
Voltage-time curve in an aniquilation-creation vortex-antivortex process
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En esta contribución se estudió la respuesta eléctrica de la creación-aniquilación de vórtices cinemáticos en una película superconductora en presencia de una corriente continua externa a campo magnético nulo. La película se encuentra en contacto con diferentes tipos de materiales simulados a través del parámetro de extrapolación de deGennes ; a s u vez, posee una pequeña región metálica localizada a una distancia del centro. Usamos la teoría de Ginzburg-Landau dependiente del tiempo para describir la variación voltaje en función del tiempo en un proceso de creación-aniquilación de vórtices cinemáticos considerando varias posiciones del defecto metálico y del parámetro de deGennes. Nuestra investigación muestra que las corrientes críticas, amplitud y frecuencia de las oscilaciones en la curva dependen fuertemente del parámetro de deGennes y de la posición del defecto en la muestra.
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