SHORT-RANGE ORDERS OF AN ADSORBED LAYER - GOLD ON THE SI(111)7X7 SURFACE

被引：34

作者：

TAKAHASHI, S

TANISHIRO, Y

TAKAYANAGI, K

机构：

[1] Tokyo Institute of Technology, Materials Science and Engineering, 227, 4259 Nagatsuda, Midori-ku, Yokahama

来源：

SURFACE SCIENCE | 1991年 / 242卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(91)90245-N

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：

Ordered phases of 5 x 2, square-root 3 x square-root 3 and 6 x 6 structures formed by gold deposition on a Si(111)7 x 7 surface were observed by transmission electron diffraction (TED). Short-range orders of the square-root 3 x square-root 3 phase of low and high coverages are analyzed from diffuse TED intensities. Phasons which displace the adsorption site by a at every translation of 6a are found to be introduced in the square-root 3 x square-root 3 structure of the saturation coverage. The phasons, which create 2a correlation between gold clusters, prohibit formation of a completely ordered square-root 3 x square-root 3 phase.

引用

页码：73 / 80

页数：8

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