Critical currents in Josephson junctions with macroscopic defects

Details Critical currents in Josephson junctions with macroscopic defects Critical currents in Josephson junctions with macroscopic defects

2000-09-06

arxiv.org/abs/cond-mat/0009088v1

Supercond. Sci. Technol. 14 (2001) 16-29

Physics

Condensed Matter

Superconductivity

17 pages with 16 figures, submitted to Supercond. Sci. Technol

Scientific paper

10.1088/0953-2048/14/1/304

The critical currents in Josephson junctions of conventional superconductors with macroscopic defects are calculated for different defect critical current densities as a function of the magnetic field. We also study the evolution of the different modes with the defect position, at zero external field. We study the stability of the solutions and derive simple arguments, that could help the defect characterization. In most cases a reentrant behavior is seen, where both a maximum and a minimum current exist.

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