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.File in questo prodotto:
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