Adatom interaction effects in surface diffusion

Motivated by recent research of Nikitin et al. [J. Phys. D: Appl. Phys., 2009, 49, 055301], we examine the effects of interatomic interactions on adatom surface diffusion. By using a mean-field approach in the random walk problem, we derive a nonlinear diffusion equation and analyze its solutions. T...

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Published in:Condensed matter physics 2013-03, Vol.16 (1), p.13604
Main Authors: Gaididei, Loktev, Naumovets, Zagorodny
Format: Article
Language:English
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adatom
nonlinear diffusion
numerical simulations
surface
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Loktev
Naumovets
Zagorodny
description Motivated by recent research of Nikitin et al. [J. Phys. D: Appl. Phys., 2009, 49, 055301], we examine the effects of interatomic interactions on adatom surface diffusion. By using a mean-field approach in the random walk problem, we derive a nonlinear diffusion equation and analyze its solutions. The results of our analysis are in good agreement with direct numerical simulations of the corresponding discrete model. It is shown that by analyzing a time dependence of adatom concentration profiles one can estimate the type and strength of interatomic interactions.
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subjects adatom
nonlinear diffusion
numerical simulations
surface
title Adatom interaction effects in surface diffusion
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