Correlation function of adsorbed Au chain on Si(111) surface

被引：9
|
作者：
Yagi, Y
Kakitani, K
Yoshimori, A
机构：
[1] Department of Electronic Engineering, Okayama University of Science
来源：
SURFACE SCIENCE | 1996年 / 356卷 / 1-3期
关键词：
computer simulations; gold; scanning tunneling microscopy; silicon; surface structure; morphology; roughness; and topography;
D O I：
10.1016/0039-6028(96)00021-0
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 surface structure of Au-adsorbed Si(111)-5x2 with short-range order has been observed through STM measurements. Particularly, the one-dimensional chains consisting of adsorbed Au atoms are clearly observed. A one-dimensional lattice model is constructed for this chain, with repulsive interactions and some assumed irregularity corresponding to STM observation. The theoretical positional correlation function of the adsorbed Au is obtained by a Monte Carlo simulation with fitting parameters of the repulsive interaction and of the irregularity of the experimental positional correlation function. Almost complete fitting is obtained, from which reasonable values of the repulsive interaction and concentration of the irregularity are obtained. A rigorous analysis is also made of another one-dimensional model to describe the inter-chain correlation on this surface, and is compared with experimental findings.
引用
收藏
页码：47 / 52
页数：6
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