Fano-like interference of plasmon resonances at a single rod-shaped nanoantenna

Single metallic nanorods acting as half-wave antennas in the optical range exhibit an asymmetric, multi-resonant scattering spectrum that strongly depends on both their length and dielectric properties. Here we show that such spectral features can be easily understood in terms of Fano-like interfere...

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Bibliographic Details
Published inNew journal of physics Vol. 14; no. 2; pp. 23035 - 23050
Main Authors López-Tejeira, F, Paniagua-Domínguez, R, Rodríguez-Oliveros, R, Sánchez-Gil, J A
Format Journal Article
LanguageEnglish
Published IOP Publishing 15.02.2012
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Summary:Single metallic nanorods acting as half-wave antennas in the optical range exhibit an asymmetric, multi-resonant scattering spectrum that strongly depends on both their length and dielectric properties. Here we show that such spectral features can be easily understood in terms of Fano-like interference between adjacent plasmon resonances. On the basis of analytical and numerical results for different geometries, we demonstrate that Fano resonances may appear for such single-particle nanoantennas provided that interacting resonances overlap in both spatial and frequency domains.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/14/2/023035