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arxiv: 0902.4626 · v2 · submitted 2009-02-26 · ❄️ cond-mat.dis-nn · cond-mat.stat-mech

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Directed transport in periodically rocked random sawtooth potentials

S. I. Denisov (1 , 2) , T. V. Lyutyy (2) , E. S. Denisova (2) , P. H\"anggi (3 , 4) , H. Kantz (1) ((1) Max Planck Institute for the Physics of Complex Systems , Germany
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(2) Sumy State University Ukraine (3) Augsburg University (4) National University of Singapore Singapore)
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classification ❄️ cond-mat.dis-nn cond-mat.stat-mech
keywords transportdirectedperiodicallyrandomregimessawtoothparticlespotential
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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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