A physical process for 1/f noise in thin metallic films

Publisher Website
Google Scholar
Abstract
The concept of power spectra for nonstationary stochastic processes is examined and a definition of ``expected power spectrum'' is employed. This allows a derivation of the spectrum for a simple process where the current arises in a conductor consisting of a collection of sites by virtue of carrier jumps. If the noise may be described by a series of noise generators associated with each volume element of the conductor we are led to a spectrum essentially in accord with the experimental observations of noise in thin films subject to a certain condition. It is shown that this condition can be satisfied if a stochastic model is chosen in which the conduction takes place by a tunnelling mechanism between small islands of conductivity.

This publication has 3 references indexed in Scilit: