Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates

Details Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates

2008-10-13

arxiv.org/abs/0810.2224v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

Langevin simulations provide an effective way to study collective effects of Brownian particles immersed in a two-dimensional periodic potential. In this paper, we concentrate essentially on the behaviour of the tracer (DTr) and bulk (DB) diffusion coefficients as function of friction. Our simulations show that in the high friction limit, the two physical quantities DTr and DB present qualitatively the same behaviour, for both coupled and decoupled substrate potentials. However, for the low friction regime, and especially for the coupled potential case, an anomalous diffusion behaviour is found. We also found that in the case of weak dynamical coupling between the ad-particles and the substrate, the exponents are not universal and rather depend on the potentials. Moreover, changes in the inter-particle potentials may reverse the behaviour to a normal one.

Affiliated with

Also associated with

No associations

Rating

Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous Behavior of the Diffusion Coefficient in Interacting Adsorbates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-720220