STM LIGHT-EMISSION SPECTROSCOPY OF AU FILM

被引：29

作者：

USHIODA, S

UEHARA, Y

KUWAHARA, M

机构：

[1] Research Institute of Electrical Communication, Tohoku University, Sendai

来源：

APPLIED SURFACE SCIENCE | 1992年 / 60-1卷

关键词：

D O I：

10.1016/0169-4332(92)90458-A

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：

We have measured the STM light emission (STM-LE) spectra of a Au film evaporated on a prism-coupler surface. The STM was placed in an ultrahigh-vacuum chamber and the spectra were measured both on the tip side and through the prism. The prism-side emission has a single narrow peak whose position moves with the emission angle. This emission is definitely due to surface plasmon polaritons (SPP) at the Au/vacuum interface. The tip-side emission spectrum contains three peaks between 1.5 and 1.9 eV. Their origin cannot be determined experimentally, although they are believed to arise from localized surface plasmons (LSP). The STM-LE spectra are extremely sensitive to the surface conditions of the tip and the sample.

引用

页码：448 / 453

页数：6