Performance of Non-local Optics when Applied to Plasmonic Nanostructures
Journal Of Physical Chemistry C 117, 8941 - 8949 (2013)
Performance of Non-local Optics when Applied to Plasmonic Nanostructures
Semi-classical non-local optics based on the hydrodynamic description of conduction elec- trons might be an adequate tool to study complex phenomena in the emerging field of nanoplas- monics. With the aim of confirming this idea, we obtain the local and non-local optical ab- sorption spectra in a model nanoplasmonic device in which there are spatial gaps between the components at nanometric and sub-nanometric scales. After a comparison with time- dependent density functional calculations, we conclude that hydrodynamic non-local optics provides qualitative agreement but not quantitative accuracy. This failure, which is manifest even in the limit where induced electric currents are not established between the constituents of the device, is mainly due to the poor description of induced electron densities.
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- http://dx.doi.org/10.1021/jp401887y