Field Theory of Mesoscopic Fluctuations in Superconductor/Normal-Metal Systems
Alexander Altland, B D Simons, D Taras-Semchuk
Abstract
Thermodynamic and transport properties of normal disordered conductors are strongly influenced by the proximity of a superconductor. A cooperation between mesoscopic coherence and Andreev scattering of particles from the superconductor generates new types of interference phenomena. We introduce a field theoretic approach capable of exploring both averaged properties and mesoscopic fluctuations of superconductor/normal-metal systems. As an example the method is applied to the study of the level statistics of a SNS-junction.
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