Universal resistance capacitance crossover in current-voltage characteristics for unshunted array of overdamped Nb- AlOx-Nb Josephson junctions

S. Sergeenkov, V. A.G. Rivera, E. Marega, F. M. Araujo-Moreira

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

4 Citas (Scopus)

Resumen

We report on some unusual behavior of the measured current-voltage characteristics (CVC) in artificially prepared two-dimensional unshunted array of overdamped Nb- AlOx -Nb Josephson junctions. The obtained nonlinear CVC are found to exhibit a pronounced (and practically temperature independent) crossover at some current Icr = (1/2 ΒC-1) I C from a resistance R dominated state with VR =R I 2 - IC2 below Icr to a capacitance C dominated state with VC = /4eC I-IC above Icr. The origin of the observed behavior is discussed within a single-plaquette approximation assuming the conventional resistively shunted junction model with a finite capacitance and the Ambegaokar-Baratoff relation for the critical current of the single junction.

Idioma originalInglés
Número de artículo096102
PublicaciónJournal of Applied Physics
Volumen107
N.º9
DOI
EstadoPublicada - 1 may 2010

Nota bibliográfica

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Huella

Profundice en los temas de investigación de 'Universal resistance capacitance crossover in current-voltage characteristics for unshunted array of overdamped Nb- AlO<sub>x</sub>-Nb Josephson junctions'. En conjunto forman una huella única.

Citar esto