title: Symmetry breaking in plasmonic nanocavities: subradiant LSPR sensing and a tunable Fano resonance.
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.
authors.affiliation: Laboratory for Nanophotonics, Department of Physics and Astronomy, M.S. 61, Rice University, Houston, Texas 77005-1892, USA.
authors.forename: Feng
authors.initials: F
authors.lastname: Hao
authors.forename: Yannick
authors.initials: Y
authors.lastname: Sonnefraud
authors.forename: Pol
authors.initials: P
authors.lastname: Van Dorpe
authors.forename: Stefan A
authors.initials: SA
authors.lastname: Maier
authors.forename: Naomi J
authors.initials: NJ
authors.lastname: Halas
authors.forename: Peter
authors.initials: P
authors.lastname: Nordlander
mesh_terms: D006863:Hydrogen-Ion Concentration; D049329:Nanostructures / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D012834:Silver