Popescu M N, Arizmendi C M, Salas-Brito A L, Family F
Department of Physics, Emory University, Atlanta, Georgia 30322, USA.
Phys Rev Lett. 2000 Oct 9;85(15):3321-4. doi: 10.1103/PhysRevLett.85.3321.
The effects of quenched disorder on the overdamped motion of a driven particle on a periodic, asymmetric potential are studied. While for the unperturbed potential the transport is due to a regular drift, the quenched disorder induces a significant additional chaotic "diffusive" motion. Possible applications to experiments in nanoscale surfaces and particle separation are discussed.
