| Issue |
Europhys. Lett.
Volume 45, Number 5, March I 1999
|
|
|---|---|---|
| Page(s) | 545 - 551 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i1999-00202-4 | |
| Published online | 01 September 2002 | |
Coupled Brownian motors: Anomalous hysteresis and zero-bias negative conductance
1
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
Received:
6
October
1998
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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