Strongly anisotropic band dispersion of an image state located above metallic nanowires

被引：52

作者：

Hill, IG ^{[1
]}

McLean, AB ^{[1
]}

机构：

[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.82.2155

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Indium can be grown on Si(111) in a 4 x I pattern that contains rows of In atoms spaced 13.3 Angstrom apart that have quasi-one-dimensional electronic structure. This ordered array of metallic wires produces an image-induced surface state series. We have measured the dispersion of the most tightly bound (n = 1) image state band and found it to be unconventional because it falls below the free electron parabola perpendicular to the In atom rows. The most straightforward explanation for this is that the electrons feel the surface corrugation potential produced by the rows of In atoms. We were able to infer the form of the potential from our measurements.

引用

页码：2155 / 2158

页数：4

共 34 条

[1] SURFACE ELECTRONIC-STRUCTURE OF A SINGLE-DOMAIN SI(111)4X1-IN SURFACE - A SYNCHROTRON-RADIATION PHOTOEMISSION-STUDY [J].