Electrical conduction via surface-state bands

被引：39

作者：

Hasegawa, S ^{[1
]}

Tong, X ^{[1
]}

Jiang, CS ^{[1
]}

Nakajima, Y ^{[1
]}

Nagao, T ^{[1
]}

机构：

[1] JAPAN SCI & TECHNOL CORP,CREST,KAWAGUCHI,SAITAMA 322,JAPAN

来源：

SURFACE SCIENCE | 1997年 / 386卷 / 1-3期

关键词：

angle-resolved photoemission spectroscopy; silicon; surface electrical transport; surface structure; x-ray photoelectron spectroscopy;

D O I：

10.1016/S0039-6028(97)00331-2

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 will discuss a two-dimensional electron system originating from a surface-state band and especially its electronic transport properties. We have found a surface superstructure that has a highly conductive surface-state band, the Si(111)-root 21 x root 21R +/- 10.89 structure. induced by adsorption of a 0.14-atomic-layer of Au or Ag onto a Si(111)-root 3 x root 3-Ag surface. Photoemission spectroscopies showed that this root 21 x root 21 structure had a highly dispersive surface-state band crossing over the Fermi level, while the surface space-charge layer was a depletion layer. It was then concluded that the observed excess surface conductance was due to the two-dimensional band of the surface electronic state. (C) 1997 Elsevier Science B.V.

引用

页码：322 / 327

页数：6

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