Scanning tunneling microscopy study of Ag/Ge(111): observation of surface reconstruction transformations

被引：12

作者：

Zhang, HM ^{[1
]}

Uhrberg, RIG ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden

来源：

SURFACE SCIENCE | 2003年 / 546卷 / 2-3期

关键词：

metallic surfaces; silver; germanium; surface structure; morphology; roughness; and topography; scanning tunneling microscopy; surface relaxation and reconstruction;

D O I：

10.1016/j.susc.2003.09.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The 6 x 6 and root39 x root39 phases of Ag/Ge(111) have been studied by scanning tunneling microscopy (STM). Surface atomic structures of the 6 x 6 and the root39 x root39 phase are proposed in terms of additional Ag adatoms on top of a root3 x root/3 layer described by the honeycomb-chain-trimer (HCT) model. By varying the STM tip bias, the reconstruction can be changed reversibly between the root39 x root39 and the 6 x 6 phase. Besides the switching between two different phases, it is also possible to flip the domain orientation of the root39 x root39 phase. The mechanisms of the reconstruction transformation have been discussed in terms of the role of the STM tip. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：L789 / L796

页数：8

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