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

2003/12/30 by G. M. Shmelev, Shmelev, G. M., E. M. Epshtein +3
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.mes-hall #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.cond-mat/0312692

9 pages, 2 figures

arxiv created 2003/12/30 · arxiv updated 2009/12/01

Abstract

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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