论文标题
通过二元表面合金的电迁移，将几乎纯的成分原子簇的远程转运
Directed long-range transport of a nearly pure component atom clusters by the electromigration of a binary surface alloy
论文作者
论文摘要
假设有空位介导的扩散，是一种用于电气移动的连续模型，用于将嵌入的原子簇跨越相位分离的$ _x $ b $ _ {1-x} $表面合金的表面露台，例如FCC AGPT（111）。计算表明，电子风在数百个晶格间距上和固定方向上载有簇，而簇的增长，其纯度在漂移期间有所改善。当电流密度，扩散各向异性，有效电荷$ q_a/q_b $的大小和符号以及跳跃频率比$γ_A/γ_B$上的影响，展示了群集的漂移速度，漂移方向，纯度和形状。
Assuming a vacancy-mediated diffusion, a continuum model for electromigration-driven transport of an embedded atom cluster across a surface terrace of a phase-separating A$_x$B$_{1-x}$ surface alloy, such as fcc AgPt(111), is presented. Computations show that the electron wind carries the cluster over hundreds of lattice spacings and in the set direction, while the cluster grows and its purity improves during the drift. Impacts of the current density, the diffusion anisotropy, the magnitude and sign of the ratio of the effective charges $q_A/q_B$, and the jump frequencies ratio $Γ_A/Γ_B$ on the cluster's drift speed, drift direction, purity and shape are demonstrated.
