Length dependence of critical current in thin superconductors |
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Authors: | HJ Fink |
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Institution: | University of California, Davis, Calif. 95616, USA |
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Abstract: | The critical current and its dependence on the length of a thin superconducting wire between two normal metals and the voltage difference across the wire at the critical current is calcualted. The latter arises from the conversion of the normal current into supercurrent and vice versa at the contacts. It is found that the critical current is zero when the length of the wire is π coherence lengths or smaller. |
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