Nonlinear voltage dependence of the shot noise in mesoscopic degenerate conductors with strong electron-electron scattering

2000/04/30 by E. G. Mishchenko
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.85.4144

published as Phys. Rev. Lett. 85, 4144 (2000). · 4 pages, 2 figures, revised version according to referee's comments

arxiv created 2000/09/03 · arxiv updated 2009/11/30

Abstract

It is shown that measurements of zero-frequency shot-noise can provide information on electron-electron interaction, because the strong interaction results in the nonlinear voltage dependence of the shot noise in metallic wires. This is due to the fact that the Wiedemann-Franz law is no longer valid in the case of considerable electron-electron interaction. The deviations from this law increase the noise power and make it dependent strongly on the ratio of electron-electron and electron-impurity scattering rates.

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