Formation and stability of self-assembled coherent islands in highly mismatched heteroepitaxy

被引：121

作者：

Wang, LG ^{[1
]}

Kratzer, P ^{[1
]}

Scheffler, M ^{[1
]}

Moll, N ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.82.4042

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the energetics of island formation in Stranski-Krastanow growth within a parameter-free approach. It is shown that an optimum island size exists for a given coverage and island density if changes in the wetting layer morphology after the 3D transition an properly taken into account. Our approach reproduces well the experimental island size dependence on coverage and indicates that the critical layer thickness depends on growth conditions. The present study provides a new explanation for the (frequently found) rather narrow size distribution of self-assembled coherent islands.

引用

页码：4042 / 4045

页数：4

共 27 条

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