ALTERNATING-CURRENT SCANNING TUNNELING SPECTROSCOPY OF SELF-ASSEMBLED MONOLAYERS ON GOLD

被引：21

作者：

STRANICK, SJ

WEISS, PS

PARIKH, AN

ALLARA, DL

机构：

[1] PENN STATE UNIV,DEPT CHEM,UNIV PK,PA 16802

[2] PENN STATE UNIV,DEPT MAT SCI & ENGN,UNIV PK,PA 16802

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1993年 / 11卷 / 04期

关键词：

D O I：

10.1116/1.578339

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We demonstrate the spectroscopic capabilities of an ac scanning tunneling microscope. This ac scanning tunneling microscope has a bias voltage modulation frequency tunable over the range dc-20 GHz and is thus capable of recording images and local spectra of insulating as well as conducting substrates. In this article we detail the spectral sensitivity and the tip-sample separation dependence of the spectra recorded by simultaneously tuning the modulation and detection frequencies. Spectra of an evaporated gold film and of self-assembled monolayers of CH3(CH2)15SH and of CH3O2C(CH2)15SH on gold are presented.

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页码：739 / 741

页数：3

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