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Multidimensional Effects on Diffusion of a Particle in Tilted Periodic Potentials
Department of Mathematics and Physics, North China Electric Power University, Baoding, China
Department of Mathematics and Physics, North China Electric Power University, Baoding, China
- 1 Department of Mathematics and Physics, North China Electric Power University, Baoding, China
- 2 Department of Mathematics and Physics, North China Electric Power University, Baoding, China
Journal of Modern Physics·Volume 12 (2021)·Pages 1960–1965·Published 16 December 2021·DOI10.4236/jmp.2021.1214112
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Abstract
This study investigates the diffusive motion of a Brownian particle in a 2D tilted periodic potential, where bias force is exerted in the x direction. The dimension effect is revealed by simulating the Langevin equation. The diffusion coefficient in x and y directions is a nonmonotonic function of the bias force, and a massive enhancement is observed in x and y directions in comparison with the case without a tilt in x direction. The underlying physical mechanism is explored.
KeywordsSurface DiffusionTilted Periodic PotentialDimensionalityLangevin Simulation
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