EFFECT OF ELECTRONIC STATES OF THE TIP ON THE STM IMAGE OF GRAPHITE

被引：34

作者：

ISSHIKI, N ^{[1
]}

KOBAYASHI, K ^{[1
]}

TSUKADA, M ^{[1
]}

机构：

[1] UNIV TOKYO,FAC SCI,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

SURFACE SCIENCE | 1990年 / 238卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(90)90051-9

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：

A first-principles calculation of the STM images of graphite is performed for three different shapes of a tungsten tip. In the calculation the tip is approximated by a small cluster. One of the tips, with more than one atom at the top, produces an abnormal image, while the others, with only one atom at the top, produce normal trigonal images. The abnormal image is caused by current interference through the multi peaks of the squared amplitude of the tunnel-active orbital at the tip. © 1990.

引用

页码：L439 / L445

页数：7

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