Coupled Brownian motors: Anomalous hysteresis and zero-bias negative conductance

We introduce a model of interacting Brownian particles in a symmetric, periodic potential that undergoes a noise-induced non-equilibrium phase transition. The associated spontaneous symmetry breaking entails a ratchet-like transport mechanism. In response to an external force we identify several nov...

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Bibliographic Details
Published in:Europhysics letters 1999-03, Vol.45 (5), p.545-551
Main Authors: Reimann, P, Kawai, R, Broeck, C. Van den, Hänggi, P
Format: Article
Language:English
Subjects:
05.40.-a
05.60.+w
64.60.-i
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Summary:We introduce a model of interacting Brownian particles in a symmetric, periodic potential that undergoes a noise-induced non-equilibrium phase transition. The associated spontaneous symmetry breaking entails a ratchet-like transport mechanism. In response to an external force we identify several novel features; among the most prominent being a zero-bias negative conductance and a prima facie counterintuitive, anomalous hysteresis.
ISSN:0295-5075
1286-4854
DOI:10.1209/epl/i1999-00202-4