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Self-consistent theory of current and voltage noise in multimode ballistic conductors

O. M. Bulashenko·J. M. Rubi
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Abstract

Electron transport in a self-consistent potential along a ballistic two-terminal conductor has been investigated. We have derived general formulas which describe the nonlinear current-voltage characteristics, differential conductance, and low-frequency current and voltage noise assuming an arbitrary distribution function and correlation properties of injected electrons. The analytical results have been obtained for a wide range of biases: from equilibrium to high values beyond the linear-response regime. The particular case of a three-dimensional Fermi-Dirac injection has been analyzed. We show that the Coulomb correlations are manifested in the negative excess voltage noise, i.e., the voltage fluctuations under high-field transport conditions can be less than in equilibrium.

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O. M. Bulashenko, J. M. Rubi. 2002-10-02. Self-consistent theory of current and voltage noise in multimode ballistic conductors. https://doi.org/10.1103/physrevb.66.045310

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