Author(s)

Huanhuan Luo, Zhanwu Bai

Department of Mathematics and Physics, North China Electric Power University, Baoding, China.

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.

Surface Diffusion, Tilted Periodic Potential, Dimensionality, Langevin Simulation

Luo, H. and Bai, Z. (2021) Multidimensional Effects on Diffusion of a Particle in Tilted Periodic Potentials. Journal of Modern Physics, 12, 1960-1965. doi: 10.4236/jmp.2021.1214112.