Directed transport in periodically rocked random sawtooth potentials

Details Directed transport in periodically rocked random sawtooth potentials Directed transport in periodically rocked random sawtooth potentials

2009-02-26

arxiv.org/abs/0902.4626v2

Phys. Rev. E 79, 051102 (2009)

Physics

Condensed Matter

Disordered Systems and Neural Networks

18 pages, 7 figures

Scientific paper

10.1103/PhysRevE.79.051102

We study directed transport of overdamped particles in a periodically rocked random sawtooth potential. Two transport regimes can be identified which are characterized by a nonzero value of the average velocity of particles and a zero value, respectively. The properties of directed transport in these regimes are investigated both analytically and numerically in terms of a random sawtooth potential and a periodically varying driving force. Precise conditions for the occurrence of transition between these two transport regimes are derived and analyzed in detail.

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