Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potential

Details Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potential Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potential

2007-09-15

arxiv.org/abs/0709.2403v2

Phys. Rev. E 76, 042103 (2007)

Physics

Condensed Matter

Statistical Mechanics

7 pages, 3 figures

Scientific paper

10.1103/PhysRevE.76.042103

Based on recent work [L. Machura, M. Kostur, P. Talkner, J. Luczka, and P. Hanggi, Phys. Rev. Lett. 98, 040601 (2007)], we extend the study of inertial Brownian motors to the case of an asymmetric potential. It is found that some transport phenomena appear in the presence of an asymmetric potential. Within tailored parameter regimes, there exists two optimal values of the load at which the mean velocity takes its maximum, which means that a load can facilitate the transport in the two parameter regimes. In addition, the phenomenon of multiple current reversals can be observed when the load is increased.

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