Shot noise and Coulomb blockade of Andreev reflection

Details Shot noise and Coulomb blockade of Andreev reflection Shot noise and Coulomb blockade of Andreev reflection

2009-07-21

arxiv.org/abs/0907.3630v1

Phys. Rev. B 80, 174527 (2009)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

We derive low energy effective action for a short coherent conductor between normal (N) and superconducting (S) reservoirs. We evaluate interaction correction $\delta G$ to Andreev conductance and demonstrate a close relation between Coulomb effects and shot noise in NS systems. In the diffusive limit doubling of both shot noise power and charge of the carriers yields $|\delta G|$ four times bigger than in the normal case. Our predictions can be directly tested in future experiments.

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