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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Published in | New journal of physics Vol. 14; no. 2; pp. 23035 - 23050 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
15.02.2012
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Online Access | Get full text |
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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. |
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ISSN: | 1367-2630 1367-2630 |
DOI: | 10.1088/1367-2630/14/2/023035 |