Shot Noise in Mesoscopic Diffusive Andreev Wires

Wolfgang Belzig

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Shot Noise in Mesoscopic Diffusive Andreev Wires

Wolfgang Belzig

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Abstract

We study shot noise in mesoscopic diffusive wires between a normal and a superconducting terminal. We particularly focus on the regime, in which the proximity-induced reentrance effect is important. We will examine the difference between a simple Boltzmann-Langevin description, which neglects induced correlations beyond the simple conductivity correction, and a full quantum calculation. In the latter approach, it turns out that two Andreev pairs propagating coherently into the normal metal are anti-correlated for E<E_c, where E_c=D/L^2 is the Thouless energy. In a fork geometry the flux-sensitive suppression of the effective charge was confirmed experimentally.

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Wolfgang Belzig. 2003-09-19. Shot Noise in Mesoscopic Diffusive Andreev Wires. https://arxiv.org/abs/cond-mat/0309467

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