Physics – Condensed Matter – Superconductivity
Scientific paper
2006-09-21
2007 Supercond. Sci. Technol. 20 62-66
Physics
Condensed Matter
Superconductivity
9 pages, 5 figures, submited to Supercond. Sci. Technol, replased Fig.5 for more correct comparison with experiment
Scientific paper
10.1088/0953-2048/20/1/011
Simplified model for current-voltage characteristics of weak links is suggested. It is based on an approach considering the multiple Andreev reflection in metallic Josephson junction. The model allows to calculate current-voltage characteristics of the superconductor - normal metal - superconductor junctions with different thicknesses of normal layer at different temperatures. A hysteretic peculiarity of $V(I)$ dependence is described as result of the negative differential resistance. The current-voltage characteristic of high-$T_c$ composite YBCO +BaPbO${_3}$ were computed.
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