Elsevier, Microelectronic Engineering, (111), p. 91-95, 2013
DOI: 10.1016/j.mee.2013.02.014
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In this work the design, fabrication and optical characterization of a polarization-sensitive L-shape nanoantenna device are reported. Such configuration supports plasmon-polariton modes that are combinations of in-phase and out-of-phase single antenna long-axis surface plasma oscillations. In the former case charges distributions induce in the gap region an intense hot spot while in the latter one a ''zero-field spot'' occurs in a plasmonic mode which can be referred to a non-zero dipolar momentum.