title: Magnetized spiral chains of plasmonic ellipsoids for one-way optical waveguides.
abstract: When a linear chain of plasmonic nanoparticles is subject to longitudinal magnetic field, it exhibits optical Faraday rotation. If the magnetized nanoparticles are plasmonic ellipsoids arranged as a spiral chain, the interplay between the Faraday rotation and the geometrical spiral rotation (structural chirality) can strongly enhance nonreciprocity. This interplay forms a waveguide that permits one-way propagation only, within four disjoint frequency bands, two bands for each direction.
authors.affiliation: School of Electrical Engineering, Tel-Aviv University, Ramat-Aviv, Tel-Aviv 69978 Israel. hadady@eng.tau.ac.il
authors.forename: Y
authors.initials: Y
authors.lastname: Hadad
authors.forename: Ben Z
authors.initials: BZ
authors.lastname: Steinberg