Activation barrier scaling and crossover for noise-induced switching in a micromechanical parametric oscillator
Other Condensed Matter
2009-11-11 v1 Statistical Mechanics
Abstract
We explore fluctuation-induced switching in a parametrically-driven micromechanical torsional oscillator. The oscillator possesses one, two or three stable attractors depending on the modulation frequency. Noise induces transitions between the coexisting attractors. Near the bifurcation points, the activation barriers are found to have a power law dependence on frequency detuning with critical exponents that are in agreement with predicted universal scaling relationships. At large detuning, we observe a crossover to a different power law dependence with an exponent that is device specific.
Keywords
Cite
@article{arxiv.cond-mat/0609394,
title = {Activation barrier scaling and crossover for noise-induced switching in a micromechanical parametric oscillator},
author = {H. B. Chan and C. Stambaugh},
journal= {arXiv preprint arXiv:cond-mat/0609394},
year = {2009}
}
Comments
5 pages, 5 figures