  We present a magnetically biased graphene-ferrite structure discriminating
the TE and TM plasmonic modes of graphene. In this structure, the graphene TM
plasmons interact reciprocally with the structure. In contrast, the graphene TE
plasmons exhibit nonreciprocity. This nonreciprocity is manifested in
unidirectional TE propagation in a frequency band close to the interband
threshold frequency. The proposed structure provides a unique platform for the
experimental demonstration of the unusual existence of the TE plasmonic mode in
graphene.
