Influence of nonuniform critical current density profile on magnetic field behavior of AC susceptibility in 2D Josephson Junction Arrays

F. M. Araujo-Moreira; W. Maluf; S. Sergeenkov

doi:10.1016/j.ssc.2004.07.006

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Influence of nonuniform critical current density profile on magnetic field behavior of AC susceptibility in 2D Josephson Junction Arrays

F. M. Araujo-Moreira·W. Maluf·S. Sergeenkov

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Abstract

Employing mutual-inductance measurements we study the magnetic field dependence of complex AC susceptibility of artificially prepared highly ordered (periodic) two-dimensional Josephson junction arrays of unshunted Nb-AlO_x-Nb junctions. The observed behavior can be explained assuming single-plaquette approximation of the overdamped model with an inhomogeneous critical current distribution within a single junction.

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F. M. Araujo-Moreira, W. Maluf, S. Sergeenkov. 2005-06-20. Influence of nonuniform critical current density profile on magnetic field behavior of AC susceptibility in 2D Josephson Junction Arrays. https://doi.org/10.1016/j.ssc.2004.07.006

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