Electric-dipole layer on Au(111) surfaces

被引：14

作者：

Mizutani, W. ^{[1
,4
]}

Ishida, T. ^{[1
,2
]}

Choi, N. ^{[3
]}

Uchihashi, T. ^{[3
]}

Tokumoto, H. ^{[1
]}

机构：

[1] Natl Inst Adv Interdisciplinary Res, Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3058562, Japan

[2] Japan Sci & Technol Corp, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] JRCAT Angstrom Technol Partnership, Tsukuba, Ibaraki 3058562, Japan

[4] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2001年 / 72卷 / Suppl 2期

关键词：

PACS: 61.16.Ch; 73.20.At; 73.30.+y;

D O I：

10.1007/s003390100675

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We measured the barrier height (BH) a UHV scanning tunneling microscope on Au(111) surfaces with Au, Pt, and carbon nanotube tips. The 22 x root 3 reconstruction was observed with all the tips, and the current-voltage relation reflected the density of states of the tips. The BH measured on the reconstructed Au(111) surface using a modulation method showed a bias-polarity dependence as 30%, at low currents (<100 pA) irrespective of the tip material, while on unreconstructed Au surfaces, BH values were independent of the bias polarity, suggesting a dipole layer originating from the reconstructed Au(111) surface.

引用

页码：S181 / S184

页数：4

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