Frequency mixing phenomena in a bistable system

Abstract

A response of a bistable system subject to several periodic and random forcing is discussed. It is shown that spectrum components of the response on mixed frequencies demonstrate a noise-induced enhancement typical for stochastic resonance. The quenching of the spectrum harmonics due to an application of a constant force that destroys symmetry of the potential is calculated. The theory is checked on a simple bistable magnetic system: a local part of a domain wall in a thin ferrit–garnet film.