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Self-consistent theory of current and voltage noise in multimode ballistic conductors
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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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BULASHENKO, Oleg, RUBÍ CAPACETI, José miguel. Self-consistent theory of current and voltage noise in multimode ballistic conductors. _Physical Review B_. 2002. Vol. 66, núm. 4, pàgs. 045310-1-045310-16. [consulta: 23 de gener de 2026]. ISSN: 0163-1829. [Disponible a: https://hdl.handle.net/2445/10878]