Near-field mapping of three-dimensional surface charge poles for hybridized plasmon modes

We describe a new computational approach to mapping three-dimensional (3D) surface charge poles and thus to determine complicated and hybridized plasmon modes in metallic nanostructures via finite element method (FEM) calculations. 3D surface charge distributions at the near-field resonance energies...

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Veröffentlicht in:AIP advances 2015-10, Vol.5 (10), p.107221-107221-8
Hauptverfasser: Huang, Yu, Ringe, Emilie, Hou, Mengjing, Ma, Lingwei, Zhang, Zhengjun
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Sprache:eng
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Zusammenfassung:We describe a new computational approach to mapping three-dimensional (3D) surface charge poles and thus to determine complicated and hybridized plasmon modes in metallic nanostructures via finite element method (FEM) calculations. 3D surface charge distributions at the near-field resonance energies are calculated directly using Gauss’ law. For a nanosphere dimer, we demonstrate that higher-order hybridized plasmon modes can be addressed clearly. As an improvement to conventional mapping approaches, this new approach provides a better understanding of comprehensive physical image of plasmonic systems necessary for fundamental studies and spectroscopy applications.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4934722