On the influence of the medium loss on resonances of surface plasmons in a cylinder

Anyutin, A. P.; Korshunov, I. P.; Shatrov, A. D.

doi:10.1134/s1064226915050010

Cited by 5 publications

(2 citation statements)

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“…In general, the resonances on the first few higher-order multipole LSP modes on a several hundred nanometre and smaller particles are well documented theoretically [3][4][5][6][7] and even measured experimentally [8][9][10]. Here, only [7] addressed the LSP modes on a metal particle, which was moderately larger than the wavelength, however still far from being treatable with geometrical optics.…”

Section: Introductionmentioning

confidence: 98%

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Localized versus delocalized surface plasmons: dual nature of optical resonances on a silver circular wire and a silver tube of large diameter

Velichko¹,

Natarov

2018

J. Opt.

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We investigate the resonances in the scattering and absorption of TE-polarized light by a solid circular silver wire and a silver tube larger than the wavelength radius and nanoscale thickness using the analytical solution and experimental data for the silver complex permittivity. We find that the resonances are well observed both in the visible and infra-red ranges if the scatterer radius is smaller than a certain value. They can be explained as the resonances on the standing surface-plasmon waves running along a curved metal-air interface or a metal layer, respectively. Still, each of them corresponds to one of the multipole localized surface plasmon modes of the circular wire or tube. This bridges the gap between localized and delocalized plasmons, which are complementary descriptions of the same physical effect intrinsic for metals in the visible range.

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Section: Introductionmentioning

confidence: 98%

“…Besides, one can make a statement that the resonances on multipole LSP modes of a metal wire could only be observed if a wire were made of metal with Imε M <0.001 [4]. This level of loss is not realistic in the visible range, however it seems that such a statement is too restrictive.…”

Section: Introductionmentioning

confidence: 99%