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Current reversals and synchronization in coupled ratchets

  • Current reversal is an intriguing phenomenon that has been central to recent experimental and theoretical investigations of transport based on ratchet mechanism. By considering a system of two interacting ratchets, we demonstrate how the coupling can be used to control the reversals. In particular, we find that current reversal that exists in a single driven ratchet system can ultimately be eliminated with the presence of a second ratchet. For specific coupling strengths a current-reversal free regime has been detected. Furthermore, in the fully synchronized state characterized by the coupling threshold k(th), a specific driving amplitude a(opt) is found for which the transport is optimum.

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Author:Uchechukwu E. Vincent, Anatole Kenfack, Dharmapuri Vijayan Senthilkumar, Dieter Mayer, Jürgen KurthsORCiDGND
URL:http://pre.aps.org/
DOI:https://doi.org/10.1103/Physreve.82.046208
ISSN:1539-3755
Document Type:Article
Language:English
Year of first Publication:2010
Year of Completion:2010
Release Date:2017/03/25
Source:Physical Review E. - ISSN 1539-3755. - 82 (2010), 4, Art. 046208
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie
Peer Review:Referiert