Regular nanocluster networks on Pb/Si(111)-Pb√3X√3 at low temperatures -: art. no. 205406

被引：45

作者：

Hupalo, M ^{[1
]}

Tringides, MC ^{[1
]}

机构：

[1] Iowa State Univ, Dept Phys, Ames Lab, US DOE, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.65.205406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have observed the formation of highly regular networks of Pb clusters, which extend up to 100 nm in linear size, during the growth of Pb on the Si(111)-Pbalpharoot3x root3 phase at low temperatures 115 K<T<250 K. The cluster networks are a metastable phase before the first preferred height of two-step Pb islands form as a result of quantum size effects. The cluster networks provide an easy kinetic pathway for the buildup of the two-step islands. The driving force for the formation of the cluster networks is most likely the long range elastic interaction between the Pb atoms mediated through the strained substrate.

引用

页码：1 / 4

页数：4

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