Spatial variations of current fluctuations in a scanning tunneling microscope

被引：2

作者：

Lagoute, J ^{[1
]}

Zambelli, T ^{[1
]}

Gauthier, S ^{[1
]}

机构：

[1] CNRS, CEMES, F-31055 Toulouse 4, France

来源：

SURFACE SCIENCE | 2003年 / 532卷

关键词：

scanning tunneling microscopy; surface diffusion; single crystal surfaces; copper; oxygen;

D O I：

10.1016/S0039-6028(03)00471-0

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：

Spatial maps of the power spectral density of the high-frequency fluctuations of the tunnelling current have been obtained with a UHV-STM for two different systems: O-2/Cu(1 0 0) and large molecules (blue Landers) on Cu(1 0 0). These "noise" images are strongly correlated with simultaneously acquired "topographic" images down to molecular resolution. The different explanations which are discussed indicate that this method could bring useful information on localized dynamical surface phenomena, not accessible in the usual imaging STM modes, which are intrinsically slow. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：1177 / 1181

页数：5

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