Disorder Induced Diffusive Transport In Ratchets

Details Disorder Induced Diffusive Transport In Ratchets Disorder Induced Diffusive Transport In Ratchets

2000-02-11

arxiv.org/abs/cond-mat/0002173v1

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 4 EPS figures; submitted to Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.85.3321

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.

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