Theory of 1⁄f Noise

Abstract

We propose a physical microscopic model explaining 1⁄f fluctuations in metals. The model is based on the scattering of the diffusely propagating conduction electrons due to surface phonon modes via randomly distributed defects. This leads to 1⁄f fluctuation in the energy spectral density of conduction electron. Theoretical results are in agreement with the experimental ones and the empirical formulas.