title: Plasmonic response of nanoscale spirals.
abstract: The Archimedean spiral geometry presents a platform for exploration of complex plasmonic mechanisms and applications. Here we show both through simulations and experiment that more complex plasmonic modes with unique near-field structure and larger mode volumes can be realized within a single, topologically robust structure. In the spiral, complex polarization response, resonant interactions and symmetry-breaking features are defined by the width and spacing of the spiral tracks and by the winding number of the spiral.
authors.affiliation: Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235-1807, USA. jed.i.ziegler@vanderbilt.edu
authors.forename: Jed I
authors.initials: JI
authors.lastname: Ziegler
authors.forename: Richard F
authors.initials: RF
authors.lastname: Haglund