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Supercurrent in a mesoscopic proximity wire

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Recent experiments on the proximity induced supercurrent in mesoscopic normal wires revealed a surprising temperature dependence. They suggest clean-limit behavior although the wires are strongly disordered. We demonstrate that this unexpected scaling is actually contained in the conventional description of diffusive superconductors and find excellent ggreement with the experimental results. In addition we propose a SQUID-like proximity structure for further experimental investigations of the effects in question.

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Wilhelm, F.K., Zaikin, A.D. & Schön, G. Supercurrent in a mesoscopic proximity wire. J Low Temp Phys 106, 305–310 (1997).

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