Abstract
We analyze the scattering of a plane TE electromagnetic wave of the visible range of wavelengths by a silver nano-cylinder with a concentric dielectric coating. The emerging plasmon resonances are treated using both the conventional presentation of the spatial distribution of the field amplitude nearby the object and by the spatial distribution of the Umov-Poynting vector. We demonstrate that application of the Umov-Poynting vector has obvious advantages: the standing and traveling waves are well resolved, simultaneously; the object interfaces become clearly visible in the spatial distribution. Unexpected impact is observed of the dielectric constant of the coating on the type of the plasmon resonance and the spatial field distribution.
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