Nonequilibrium Noise in Metals at Mesoscopic Scales
F. Green (CSIRO Telecommunications, Industrial Physics), M. P., Das (Australian National University)
TL;DR
This paper reviews a semiclassical theory for high-field noise in degenerate conductors, explaining noise suppression in quantum-confined systems and describing nonequilibrium thermal noise in mesoscopic wires.
Contribution
It introduces a microscopic semiclassical framework based on the Boltzmann equation to analyze nonequilibrium noise in mesoscopic and quantum-confined conductors.
Findings
Microscopic description of noise suppression in quantum-confined systems
Analysis of nonequilibrium thermal noise in mesoscopic wires
Application of Boltzmann equation to high-field noise phenomena
Abstract
We review a semiclassical theory of high-field noise in degenerate conductors, based on propagator solutions to the Boltzmann equation for the fluctuation distribution function. The theory provides a microscopic description of correlation-induced suppression of noise in quantum-confined systems, such as heterojunction devices. It is also capable of describing diffusive conductors in the mesoscopic regime. We discuss nonequilibrium thermal noise in a simple model of a mesoscopic wire.
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Surface and Thin Film Phenomena · Thermal properties of materials