Binding energies between unlike atoms determined from island densities
Binding energies between unlike atoms determined from island densities
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由岛密度确定的不同原子之间的结合能
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Maass
中科院分区：
文献类型：
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作者：
M. Einax;W. Dieterich;P. Maass
亚单分子层成核和生长过程中的岛密度测量可以用来确定吸附原子的扩散常数和类似原子之间的有效结合能。虽然这种“成核路径”对于单组分体系来说已经建立得很好了，但我们在这里提出了一种新的方法来确定不同原子之间的有效结合能，这是通过分析从不同组分共沉积获得的岛密度来获得的。该程序是基于最近发展的一种理论[M.Einax等人，Phys.莱特牧师。99,016106(2007年)；W.Dieterich等人，欧元。太棒了。J.Spec.托普。161,151(2008)]，并通过动力学蒙特卡罗模拟生成实验替代数据来证明其实际适用性。
Measurements of island densities during submonolayer nucleation and growth can be used to determine adatom diffusion constants and effective binding energies between like atoms. While this “nucleation route” is well established for monocomponent systems, we here present a new procedure to determine effective binding energies between unlike atoms by analyzing island densities obtained from codeposition of different components. The procedure is based on a theory developed recently [M. Einax et al., Phys. Rev. Lett. 99, 016106 (2007); W. Dieterich et al., Eur. Phys. J. Spec. Top. 161, 151 (2008)] and its practical applicability is demonstrated by generating experimental surrogate data by kinetic Monte Carlo simulations.