Analytical study of the plasmonic modes of metal nanoparticle circular array

Details Analytical study of the plasmonic modes of metal nanoparticle circular array Analytical study of the plasmonic modes of metal nanoparticle circular array

2007-12-28

arxiv.org/abs/0712.4374v1

Phys. Rev. B 77, 205423 (2008)

Physics

Optics

18 pages, 6 figures

Scientific paper

10.1103/PhysRevB.77.205423

We analyze the plasmonic modes of a metal nanoparticle circular array. Closed form solutions to the eigenmode problem are given. For each polarization, the plasmonic mode with the highest quality is found to be an antiphase mode. We found that the significant suppression in radiative loss can be understood as the cancellation of the dipolar radiation term in the radiative linewidth. The remaining finite radiative linewidth decreases exponentially as the number of particle increases.

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