Scanning tunneling spectroscopy on Au thin film structures deposited on highly oriented pyrolitic graphite

被引：15
作者：
Houbertz, R [1 ]
Weber, U [1 ]
Hartmann, U [1 ]
机构：
[1] Univ Saarbrucken, Inst Expt Phys, D-66041 Saarbrucken, Germany
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1998年 / 66卷 / Suppl 1期
关键词：
D O I：
10.1007/s003390051119
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The local electronic structure of nanoscale Au islands and of Au thin films on highly oriented pyrolitic graphite (HOPC) surfaces is investigated by scanning tunneling microscopy and spectroscopy (STM/STS) in ultra-high vacuum (UHV). The Au islands are produced by field evaporation from the tunneling tip. Thin films are produced ex situ by de sputter deposition. For all sample types, the I(V) curves show discrete maxima and thus negative differential conductivity. Up to five current maxima were found equally spaced for a voltage range of +/-1.5 V. Additionally, variations in the I(V) curves were observed with varying island height. The results are discussed on the basis of a Au/HOPG intercalation process.
引用
收藏
页码：S149 / S152
页数：4
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