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arXiv · 1902.05476

Cross-correlated shot noise in three-terminal superconducting hybrid nanostructures

Dmitry S. Golubev·Andrei D. Zaikin
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Abstract

We work out a unified theory describing both non-local electron transport and cross-correlated shot noise in a three-terminal normal-superconducting-normal (NSN) hybrid nanostructure. We describe noise cross correlations both for subgap and overgap bias voltages and for arbitrary distribution of channel transmissions in NS contacts. We specifically address a physically important situation of diffusive contacts and demonstrate a non-trivial behavior of non-local shot noise exhibiting both positive and negative cross correlations depending on the bias voltages. For this case, we derive a relatively simple analytical expression for cross-correlated noise power which contains only experimentally accessible parameters.

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Dmitry S. Golubev, Andrei D. Zaikin. 2019-04-04. Cross-correlated shot noise in three-terminal superconducting hybrid nanostructures. https://doi.org/10.1103/physrevb.99.144504

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