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Particle transport in space-periodic potentials in underdamped systems
Authors:Email author" target="_blank">IG?MarchenkoEmail author  II?Marchenko  AV?Zhiglo
Institution:1.NSC “Kharkov Institute of Physics and Technology”,Kharkov,Ukraine;2.Kharkov National University,Kharkov,Ukraine;3.NTU “Kharkov Polytechnic Institute”,Kharkov,Ukraine
Abstract:We consider the motion of an underdamped Brownian particle in a tilted periodic potentialin a wide temperature range. Based on the previous data and the new simulation results weshow that the underdamped motion of particles in space-periodic potentials can beconsidered as overdamped motion in the velocity space in the effective double-wellpotential. Simple analytic expressions for the particle mobility and diffusion coefficientare derived with the use of the presented model. These accurately match numericalsimulation results.
Keywords:
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