Self-consistent rate theory for submonolayer surface growth of multicomponent systems
Self-consistent rate theory for submonolayer surface growth of multicomponent systems
复制标题
多组分体系亚单层表面生长的自洽速率理论
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
W. Dieterich
中科院分区：
文献类型：
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作者：
M. Einax;P. Maass;W. Dieterich
亚单层区域表面生长的自洽速率理论从单组分系统推广到多组分系统，这些系统是由不同类型的原子或分子共沉积形成的。作为一个新特征，该理论需要引入对密度分布，以便能够对不同物种之间的反应进行对称处理。该方法是针对二元系统明确开发的，并针对动力学蒙特卡罗模拟进行了测试。使用一组简化的速率方程，只需求解几个微分方程即可获得岛和吸附原子密度以及不稳定团簇密度的良好定量预测。
The self-consistent rate theory for surface growth in the submonolayer regime is generalized from mono- to multi-component systems, which are formed by codeposition of different types of atoms or molecules. As a new feature, the theory requires the introduction of pair density distributions to enable a symmetric treatment of reactions among different species. The approach is explicitly developed for binary systems and tested against kinetic Monte Carlo simulations. Using a reduced set of rate equations, only a few differential equations need to be solved to obtain good quantitative predictions for island and adatom densities, as well as densities of unstable clusters.