Scaling Theory of Conduction Through a Normal-Superconductor Microbridge

C.W.J. Beenakker , B. Rejaei , J.A. Melsen (Instituut-Lorentz , Leiden , the Netherlands)

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classification ❄️ cond-mat

keywords gammalengthresistancescalingsuperconductorattachedcomputedconduction

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The length dependence is computed of the resistance of a disordered normal-metal wire attached to a superconductor. The scaling of the transmission eigenvalue distribution with length is obtained exactly in the metallic limit, by a transformation onto the isobaric flow of a two-dimensional ideal fluid. The resistance has a minimum for lengths near l/Gamma, with l the mean free path and Gamma the transmittance of the superconductor interface.

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Scaling Theory of Conduction Through a Normal-Superconductor Microbridge

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