  Magneto-optical phenomena such as the Faraday and Kerr effects play a
decisive role for establishing control over polarization and intensity of
optical fields propagating through a medium. Intensity effects where the
direction of light emission depends on the orientation of the external magnetic
field are of particular interest as they can be used for routing the light. We
report on a new class of transverse emission phenomena for light sources
located in the vicinity of a surface, where directionality is established
perpendicularly to the externally applied magnetic field. We demonstrate the
routing of emission for excitons in a diluted-magnetic-semiconductor quantum
well. The directionality is significantly enhanced in hybrid plasmonic
semiconductor structures due to the generation of plasmonic spin fluxes at the
metal-semiconductor interface.
