Electromagnetic coupling on an atomic scale

被引:57
|
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
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.
引用
收藏
页码:156803/1 / 156803/4
页数:4
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