Abstract

The conditions for the occurrence of strong magnetotransverse anisotropy in light scattering by a single gyrotropic sphere are investigated by means of rigorous full electrodynamic multipole calculations. It is shown that composite magnetoplasmonic spherical scatterers with a core–shell morphology can induce large and tunable plasmon-driven Hall photon currents, which appear even in the case of subwavelength particles. Explicit results for silver-coated bismuth-substituted yttrium iron garnet nanospheres are presented and analyzed.

© 2016 Optical Society of America

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