THEORY OF VISIBLE-LIGHT EMISSION FROM SCANNING TUNNELING MICROSCOPE

被引：100

作者：

UEHARA, Y ^{[1
]}

KIMURA, Y ^{[1
]}

USHIODA, S ^{[1
]}

TAKEUCHI, K ^{[1
]}

机构：

[1] HEWLLET PACKARD LABS JAPAN,TAKATSU KU,KAWASAKI 213,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷 / 08期

关键词：

STM; LIGHT EMISSION; LOCAL SURFACE PLASMON; SURFACE PLASMON POLARITON;

D O I：

10.1143/JJAP.31.2465

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The mechanism for visible light emission from the scanning tunneling microscope (STM) has been investigated theoretically by adapting a theory for light emitting tunnel junctions (LETJ). From the analysis of the calculated results and available experimental data, the following picture emerges. The tunneling current first excites localized surface plasmons (LSP) that are localized in a region of a few tens of Angstroms between the STM tip-front and the sample surface. Some of them decay into surface plasmon polaritons (SPP) that propagate along the sample surface. There are two channels of light emission: one is direct emission from LSP and the other is emission through SPP. The relative branching ratio between these two channels depends on the experimental configuration. The effect of sample surface roughness is very small and negligible.

引用

页码：2465 / 2469

页数：5

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