Abstract-Terahertz Magnetoplasmon Energy Concentration and Splitting in Graphene PN Junctions

Nima Chamanara, Dimitrios L. Sounas, Thomas Szkopek, Christophe Caloz

http://arxiv.org/abs/1306.5425

(Submitted on 23 Jun 2013)

Terahertz plasmons and magnetoplasmons propagating along electrically and chemically doped graphene p-n junctions are investigated. It is shown that such junctions support non-reciprocal magnetoplasmonic modes which get concentrated at the middle of the junction in one direction and split away from the middle of the junction in the other direction under the application of an external static magnetic field. This phenomenon follows from the combined effects of circular birefringence and carrier density non-uniformity. It can be exploited for the realization of plasmonic isolators.