Atomic geometry and theoretical scanning tunneling microscopy images of K chains on InAs(110)

被引：0
|
作者：
Yi, H
Lee, S
Kim, H
机构：
[1] Korea Inst Sci & Technol Informat, Supercomp Ctr, Taejon 305600, South Korea
[2] Korea Res Inst Stand & Sci, Mat Evaluat Ctr, Taejon 305600, South Korea
来源：
APPLIED SURFACE SCIENCE | 2004年 / 237卷 / 1-4期
关键词：
scanning tunneling microscopy; K chains; InAs(110);
D O I：
10.1016/j.apsusc.2004.06.137
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：
We have performed total-energy density-functional calculations using ab initio pseudopotentials to investigate the atomic geometry and scanning tunneling microscopy (STM) of K adsorbed on the InAs(1 1 0) surface. We have identified the most favorable adsorption geometry formed by K adatoms occupying two almost degenerate adsorption sites. Based on this structure, we have simulated the STM images showing asymmetric and zigzag chain along the [110] direction for both negative and positive sample biases. The calculated STM images agree with the recent STM observation. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：200 / 205
页数：6
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