Stochastic resonance in a quasi-two-dimensional superlattice. II

Details Stochastic resonance in a quasi-two-dimensional superlattice. II Stochastic resonance in a quasi-two-dimensional superlattice. II

2003-12-30

arxiv.org/abs/cond-mat/0312692v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 2 figures

Scientific paper

A fluctuation theory is presented for the nonequilibrium second order phase transition in a quasi-two-dimensional electron gas. A transverse (with respect to the current through the sample) spontaneous electric field as an order parameter and a driving longitudinal field as a control parameter are used. In addition to the earlier results, the intrawell dynamics is taken into account. Non-monotonous behavior of the periodic signal gain as a function of the noise power (stochastic resonance) is predicted.

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