STM investigations of local potential barrier distribution of the atomic surface of graphite 被引量：1

STM investigations of local potential barrier distribution of the atomic surface of graphite

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摘要 To modulate the tunneling gap with the lock in amplifier in the scanning tunneling microscopy(STM), information of the tunneling current variation can be obtained. The local potential barrier distribution of graphite surface atoms is got by means of such technology. Compared with STM image under topography observation mode, the local potential barrier image has higher resolution and less influence on the tip and better anti interference capability. Observed results of the graphite are given and discussed in this paper. To modulate the tunneling gap with the lock in amplifier in the scanning tunneling microscopy(STM), information of the tunneling current variation can be obtained. The local potential barrier distribution of graphite surface atoms is got by means of such technology. Compared with STM image under topography observation mode, the local potential barrier image has higher resolution and less influence on the tip and better anti interference capability. Observed results of the graphite are given and discussed in this paper.

作者 CAO Jian zhang 1, SONG Jian ping 2, XU Jia dong 1, CHEN Guo rui 1(1.Department of Electronic Engineering, Northwestern Polytechnical University, Xian, P.R.China,710072 2. Department of Electronic Engineering, Xian Jiaotong University, Xian

出处《原子与分子物理学报》 CAS CSCD 北大核心 2000年第4期603-607,共5页 Journal of Atomic and Molecular Physics

关键词 STM 局部势垒分布石墨原子表面 Scanning tunneling microscopy(STM) Local potential barrier Lock in amplifier

分类号 O562.1 [理学—原子与分子物理] O647.9 [理学—物理化学]

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参考文献3

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STM investigations of local potential barrier distribution of the atomic surface of graphite 被引量：1

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