Grazing-incidence metal deposition: Pattern formation and slope selection
Grazing-incidence metal deposition: Pattern formation and slope selection
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掠入射金属沉积：图案形成和坡度选择
DOI：
10.1103/physrevb.61.14047
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发表时间：
2000
影响因子：
3.7
通讯作者：
B. Poelsema
中科院分区：
文献类型：
--
作者：
S. Dijken;L. Jorritsma;B. Poelsema
用低能电子衍射和点轮廓分析研究了掠入射条件下Cu在Cu（001）表面的分子束外延生长。在大于50 °的入射角下，演变的表面形态不再显示Cu（001）固有的四重对称性，仅留下作为镜面的入射平面。随着沉积角度的增加，表面粗糙度以及所生长的丘结构的斜率增加。这些发现解释了转向，这源于入射原子和衬底原子之间的长程吸引力，并导致原子优先到达岛的顶部。当沉积光束的入射角大于50 °时，转向具有普遍的重要性，在生长研究中应常规考虑转向。
Molecular beam epitaxy of Cu on Cu (001) at grazing angles of incidence has been studied using spot profile analysis low-energy electron diffraction. At angles of incidence larger than 50 the evolving surface morphology no longer shows the fourfold symmetry inherent to Cu (001), leaving only the plane of incidence as a mirror plane. The surface roughness as well as the slope of the grown mound structures increase with increasing deposition angle. These findings are explained by steering, which originates from long-range attractive forces between incident atoms and substrate atoms and leads to preferential arrival of atoms on top of islands. Steering is of general importance and should routinely be considered in growth studies when the angle of incidence of the depositing beam is larger than 50.