Symmetry breaking in plasmonic nanocavities: subradiant LSPR sensing and a tunable Fano resonance |
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| Authors: | Hao Feng Sonnefraud Yannick Van Dorpe Pol Maier Stefan A Halas Naomi J Nordlander Peter |
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| Affiliation: | Laboratory for Nanophotonics, Department of Physics and Astronomy, M.S. 61, Rice University, Houston, Texas 77005-1892, USA. |
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| Abstract: | A metallic nanostructure consisting of a disk inside a thin ring supports superradiant and very narrow subradiant modes. Symmetry breaking in this structure enables a coupling between plasmon modes of differing multipolar order, resulting in a tunable Fano resonance. The LSPR sensitivities of the subradiant and Fano resonances are predicted to be among the largest yet for individual nanostructures. |
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