Electromagnetic coupling on an atomic scale

被引：59

作者：

Aizpurua, J ^{[1
]}

Hoffmann, G

Apell, SP

Berndt, R

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[2] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

[3] Kristianstad Univ, Univ Outreach, SE-29188 Kristianstad, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.89.156803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Light emission from a scanning tunneling microscope is used to investigate the electromagnetic coupling (EMC) of a metal tip and a metal sample. Subatomic scale modifications of the tip-sample region cause spectral shifts of the fluorescence as demonstrated for a monatomic step and by variation of the tip-sample distance. For sharp tips the EMC is confined to a lateral range of a few nm. The results are consistent with model calculations of the electromagnetic response of an appropriate tip-sample geometry.

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页码：156803/1 / 156803/4

页数：4

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