Strain induced adatom correlations

SURFACE SCIENCE

卷:606

Article

关键词: Adatom density correlations;    Elastic interactions;    Long range strain;    Born-Green-Yvon integro-differential equation;    Anisotropic interactions;   

DOI  :  10.1016/j.susc.2012.07.032

来源: Elsevier

【 摘 要 】

A Born-Green-Yvon type model for adatom density correlations is combined with a model for adatom interactions mediated by the strain in elastic anisotropic substrates. The resulting nonlinear integral equation is solved numerically for coverages from zero to a limit given by stability constraints. W, Nb, Ta and Au surfaces are taken as examples to show the effects of different elastic anisotropy regions. Results of the calculation are shown by appropriate plots and discussed. A mapping to superstructures is tried. Corresponding adatom configurations from Monte Carlo simulations are shown. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

Free