Biased diffusion in a one-dimensional adsorbed monolayer

被引:29
作者
Bénichou, O [1 ]
Cazabat, AM
Lemarchand, A
Moreau, M
Oshanin, G
机构
[1] Univ Paris 06, Phys Theor Liquides Lab, CNRS, UMR 7600, F-75252 Paris 05, France
[2] Coll France, Phys Mat Condensee Lab, F-75252 Paris, France
关键词
hard-core lattice gas; Langmuir adsorption/desorption model; tracer diffusion and mobility;
D O I
10.1023/A:1004679421218
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the dynamics of a probe particle, which performs biased diffusive motion in a one-dimensional adsorbed monolayer composed of mobile hardcore particles undergoing continuous exchanges with a vapor phase. In terms of a mean-field-type approach, based on the decoupling of the third-order correlation functions into the product of pairwise correlations, we determine analytically the density profiles of the monolayer particles, as seen from the stationary moving probe, and calculate the terminal velocity V-pr, mobility mu(pr) and the selfdiffusion coefficient D-pr of the probe. Our analytical results are confirmed by Monte Carlo simulations.
引用
收藏
页码:351 / 371
页数:21
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