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High-field noise in metallic diffusive conductors

Frederick Green·Mukunda P Das
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Abstract

We analyze high-field current fluctuations in degenerate conductors by mapping the electronic Fermi-liquid correlations at equilibrium to their semiclassical non-equilibrium form. Our resulting Boltzmann description is applicable to diffusive mesoscopic wires. We derive a non-equilibrium connection between thermal fluctuations of the current and resistive dissipation. In the weak-field limit this is the canonical fluctuation- dissipation theorem. Away from equilibrium, the connection enables explicit calculation of the excess ``hot-electron'' contribution to the thermal spectrum. We show that excess thermal noise is strongly inhibited by Pauli exclusion. This behaviour is generic to the semiclassical metallic regime.

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Frederick Green, Mukunda P Das. 2000-05-09. High-field noise in metallic diffusive conductors. https://doi.org/10.1088/0953-8984%2F12%2F24%2F314

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