ORIGIN OF SELF-ASSEMBLED QUANTUM DOTS IN HIGHLY MISMATCHED HETEROEPITAXY

被引：263

作者：

PRIESTER, C

LANNOO, M

机构：

[1] Institut d'Ilectronique et de Microélectronique du Nord, Département ISEN, 59652 Villenueve D'Ascq Cedex

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.75.93

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the early stages of highly mismatched heteroepitaxy, self-assembled dots appear as soon as the coverage exceeds a critical value. It is shown that this phenomenon is determined by the preliminary growth of 2D platelets which act as precursors for the formation of 3D coherent islands. The argumentation is based on a total energy calculation using a valence force field approach for the elastic part, the surface contribution being added separately. The proposed mechanism provides an explanation for the fairly good calibration of the observed 3D islands. © 1995 The American Physical Society.

引用

页码：93 / 96

页数：4

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