We investigate electromagnetic scattering and plasmonic cloaking in a systemcomposed by a dielectric cylinder coated with a magneto-optical shell. In thelong-wavelength limit we demonstrate that the application of an externalmagnetic field can not only switch on and off the cloaking mechanism but alsomitigate losses, as the absorption cross-section is shown to be minimalprecisely at the cloaking operation frequency band. We also show that theangular distribution of the scattered radiation can be effectively controlledby applying an external magnetic field, allowing for a swift change in thescattering pattern. By demonstrating that these results are feasible withrealistic, existing magneto-optical materials, such as graphene epitaxiallygrown on SiC, we suggest that magnetic fields could be used as an effective,versatile external agent to tune plasmonic cloaks and to dynamically controlelectromagnetic scattering in an unprecedented way, we hope that these resultsmay find use in disruptive photonic technologies.
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