Volume 45, Number 5, March I 1999
|Page(s)||545 - 551|
|Published online||01 September 2002|
Coupled Brownian motors: Anomalous hysteresis and zero-bias negative conductance
Institut für Physik, Universität Augsburg -
D-86135 Augsburg, Germany
2 University of Alabama at Birmingham - Birmingham, AL 35294, USA
3 Limburgs Universitair Centrum - 3590 Diepenbeek, Belgium
Accepted: 25 December 1998
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.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise and Brownian motion / 05.60.+w – Transport processes: theory / 64.60.-i – General studies of phase transitions
© EDP Sciences, 1999
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