Mesoscopic Noise Theory: Microscopics, or Phenomenology?

F. Green; M. P. Das

doi:10.1063/1.59993

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arXiv · cond-mat/9905086

Mesoscopic Noise Theory: Microscopics, or Phenomenology?

F. Green·M. P. Das

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Abstract

We argue, physically and formally, that existing diffusive models of noise yield inaccurate microscopic descriptions of nonequilibrium current fluctuations. The theoretical shortfall becomes pronounced in quantum-confined metallic systems, such as the two-dimensional electron gas. In such systems we propose a simple experimental test of mesoscopic validity for diffusive theory's central claim: the smooth crossover between Johnson-Nyquist and shot noise.

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F. Green, M. P. Das. 1999-10-13. Mesoscopic Noise Theory: Microscopics, or Phenomenology?. https://doi.org/10.1063/1.59993

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