Giant Enhancement of Diffusion in a Tilted Egg-Carton Potential  

作　　者：宋阳 包景东 

机构地区：[1]Department of Physics,Beijing Normal University

出　　处：《Chinese Physics Letters》2016年第2期5-8,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11575024 and 11175021;the Plan of Beijing College Students'Scientific Research and EntrePrenurial Action under Grant No 105820

摘　　要：Diffusion of a particle on a tilted periodic surface such as the egg-carton potential is investigated using Langevin Monte Carlo simulations. It is found that the effective diffusion coefficient of the particle related to the one- dimensional case can be greatly enhanced, when the local minima of such potential along the x and y directions are close to vanishing. A relation between the group diffusion and the phase diffusion is used to analyze the enhancement mechanism of the diffusion.Diffusion of a particle on a tilted periodic surface such as the egg-carton potential is investigated using Langevin Monte Carlo simulations. It is found that the effective diffusion coefficient of the particle related to the one- dimensional case can be greatly enhanced, when the local minima of such potential along the x and y directions are close to vanishing. A relation between the group diffusion and the phase diffusion is used to analyze the enhancement mechanism of the diffusion.

关 键 词：of on Giant Enhancement of Diffusion in a Tilted Egg-Carton Potential is in that 

分 类 号：O552.2[理学—热学与物质分子运动论]