Radiation damping in metal nanoparticle pairs

被引：145
|
作者：
Dahmen, Christian [1 ]
Schmidt, Benjamin [1 ]
von Plessen, Gero [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Phys, IA, D-52056 Aachen, Germany
来源：
NANO LETTERS | 2007年 / 7卷 / 02期
关键词：
D O I：
10.1021/nl062377u
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The radiation damping rate of plasmon resonances in pairs of spherical gold nanoparticles is calculated. The radiative line width of the plasmon resonance indicates significant far-field coupling between the nanoparticles over distances many times the particle diameter. The radiation damping of the coupled particle-plasmon mode alternates between superradiant and subradiant behavior when the particle spacing is varied. At small particle spacings where near-field coupling occurs, the radiation damping rate lies far below that of an isolated particle.
引用
收藏
页码：318 / 322
页数：5
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