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Oblique Stacking of Three-Dimensional Dome Islands in Ge/Si Multilayers

机译:Ge / Si多层膜中三维圆顶岛的倾斜堆叠

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摘要

The organization of Ge 'dome' islands in Ge/Si multilayers has been investigated by cross-sectional transmission electron microscopy. Ge 'domes' are found to spontaneously arrange in oblique stacks, replicating at a well-defined angle from one bilayer to the next. The formation of oblique island stacks is governed by a complex interplay of surface strain - generated by the already buried islands - and surface curvature - caused by the inherent tendency of large 'domes' to carve out material from the surrounding planar substrate.
机译:已经通过截面透射电子显微镜研究了Ge ​​/ Si多层中的Ge“圆顶”岛的组织。发现Ge“圆顶”自发地排列成倾斜的堆叠,从一个双层到另一个双层以明确的角度复制。倾斜岛堆的形成受表面应变(由已经掩埋的岛所产生)和表面曲率(由大的“圆顶”从周围的平面基板中切出材料的固有趋势)造成的复杂相互作用所控制。

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