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Drift-Induced Active and Nonreciprocal Plasmonics in Graphene

Morgado, T. A. ; Silveirinha, M. G.

Drift-Induced Active and Nonreciprocal Plasmonics in Graphene, Proc Metamaterials International Congress on Artificial Materials for Novel Wave Phenomena Metamaterials, New York, United States, Vol. , pp. - , September, 2021.

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We present a solution to break the time-reversal symmetry and achieve strong nonreciprocal responses and regimes of optical gain at the nanoscale. We theoretically demonstrate that by coupling a drift-current biased graphene sheet to a polar dielectric (silicon carbide) slab, it is possible to obtain regimes of loss compensation and plasmonic amplification wherein the graphene plasmons are pumped by the drifting electrons.