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Semiclassical theory of current correlations in chaotic dot-superconductor systems

P. Samuelsson·M. Buttiker
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Abstract

We present a semiclassical theory of current correlations in multiterminal chaotic dot-superconductor junctions, valid in the absence of the proximity effect in the dot. For a dominating coupling of the dot to the normal terminals and a nonperfect dot-superconductor interface, positive cross correlations are found between currents in the normal terminals. This demonstrates that positive cross correlations can be described within a semiclassical approach. We show that the semiclassical approach is equivalent to a quantum mechanical Green's function approach with suppressed proximity effect in the dot.

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P. Samuelsson, M. Buttiker. 2002-07-24. Semiclassical theory of current correlations in chaotic dot-superconductor systems. https://doi.org/10.1103/physrevb.66.201306

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