Collective stochastic resonance in shear-induced melting of sliding bilayers

Das, Moumita ; Ananthakrishna, G. ; Ramaswamy, Sriram (2003) Collective stochastic resonance in shear-induced melting of sliding bilayers Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 68 (6). 061402_1-061402_13. ISSN 1539-3755

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The far-from-equilibrium dynamics of two crystalline two-dimensional monolayers driven past each other is studied using Brownian dynamics simulations. While at very high and low driving rates the layers slide past one another retaining their crystalline order, for intermediate range of drives the system alternates irregularly between the crystalline and fluid-like phases. A dynamical phase diagram in the space of interlayer coupling and drive is obtained. A qualitative understanding of this stochastic alternation between the liquid-like and crystalline phases is proposed in terms of a reduced model within which it can be understood as a stochastic resonance for the dynamics of collective order parameter variables. This remarkable example of stochastic resonance in a spatially extended system should be seen in experiments which we propose in the paper.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:39895
Deposited On:19 May 2011 10:13
Last Modified:17 May 2016 22:10

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