Disorder Induced Diffusive Transport In Ratchets
arXiv:cond-mat/0002173 · doi:10.1103/PhysRevLett.85.3321
Abstract
The effects of quenched disorder on the overdamped motion of a driven particle on a periodic, asymmetric potential is studied. While for the unperturbed potential the transport is due to a regular drift, the quenched disorder induces a significant additional chaotic ``diffusive'' motion. The spatio-temporal evolution of the statistical ensemble is well described by a Gaussian distribution, implying a chaotic transport in the presence of quenched disorder.
10 pages, 4 EPS figures; submitted to Phys. Rev. Letters
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