In order to analyze the diamagnetic properties of sintered granular superconductors, a circuital model consisting of a network of identical inductances (L0) and Josephson junctions is developed. In particular, the case of sufficiently high values of the maximum Josephson currents (Ij), such that L0Ij≫Φ0, is considered. Neglecting thermal activation processes, the process of irreversible penetration of flux quanta is studied numerically. A critical state model follows. © 1993.

Critical state in Josephson junction arrays as models of a bi-dimensional superconducting granular system

DE LUCA, Roberto;PACE, Sandro;RAICONI, Giancarlo
1993

Abstract

In order to analyze the diamagnetic properties of sintered granular superconductors, a circuital model consisting of a network of identical inductances (L0) and Josephson junctions is developed. In particular, the case of sufficiently high values of the maximum Josephson currents (Ij), such that L0Ij≫Φ0, is considered. Neglecting thermal activation processes, the process of irreversible penetration of flux quanta is studied numerically. A critical state model follows. © 1993.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/3307278
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