Phys. Rev. E 76, 042103 (2007) [3 pages]Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potentialReceived 31 August 2007; published 25 October 2007 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. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.76.042103
DOI:
10.1103/PhysRevE.76.042103
PACS:
05.60.−k, 05.45.−a, 74.25.Fy
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