Absolute Transverse Mobility and Ratchet Effect on Periodic 2D Symmetric Substrates
arXiv:cond-mat/0212576 · doi:10.1103/PhysRevE.68.046102
Abstract
We present a simple model of an overdamped particle moving on a two dimensional symmetric periodic substrate with a dc drive in the longitudinal direction and additional ac drives in both the longitudinal and transverse directions. For certain regimes we find that a finite longitudinal dc force produces a net dc response only in the transverse direction, which we term absolute transverse mobility. Additionally we find regimes exhibiting a ratchet effect in the absence of an applied dc drive.
8 pages, 8 postscript figures. Expanded version with additional phase diagrams and discussion
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