Current - voltage characteristics of break junctions of high-$T_c$ superconductors
| Autor: | Gokhfeld, D M, Balaev, D A, Shaykhutdinov, K A, Popkov, S I, Petrov, M I |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Physica C, V. 467, Issues 1-2, (2007), P. 80-84 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physc.2007.09.001 |
| Popis: | The current-voltage ($I$-$V$) characteristics of break junctions of polycrystalline La$_{1.85}$Sr$_{0.15}$CuO$_4$, Y$_{0.75}$Lu$_{0.25}$Ba$_2$Cu$_3$O$_{7-\delta}$, Bi$_{1.8}$Pb$_{0.3}$Sr$_{1.9}$Ca$_2$Cu$_3$O$_x$ and composite YBa$_2$Cu$_3$O$_{7-\delta}$ + Ag are investigated. The experimental $I$-$V$ curves exhibit the specific peculiarities of superconductor/normal-metal/superconductor junctions. The relation between an $I$-$V$ characteristic of network of weak links and $I$-$V$ dependencies of typical weak links is suggested to describe the experimental data. The $I$-$V$ curves of typical weak links are calculated by the K\"{u}mmel - Gunsenheimer - Nicolsky model considering the multiple Andreev reflections. Comment: 9 pages, 5 figures, 2 Tables |
| Databáze: | arXiv |
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