Abstract

The transmission coefficient of a thin disordered wire varies dramatically with the energy of electrons attempting to diffuse along the wire. Hence on a microscopic scale the relationship between current and voltage is a highly nonlinear one. This results in noise, in the form of harmonic and intermodulation distortion of the input signal, which has a l/f2 behaviour up to frequencies where hf is comparable with kBT. Analytic expressions are derived for the noise in the limit of weak disorder.

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