Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene

Details Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene

2012-04-19

arxiv.org/abs/1204.4372v2

Physics

Condensed Matter

Strongly Correlated Electrons

to appear in Nano Letters

Scientific paper

10.1021/nl300572y

We show that in graphene epitaxially grown on SiC the Drude absorption is transformed into a strong terahertz plasmonic peak due to natural nanoscale inhomogeneities, such as substrate terraces and wrinkles. The excitation of the plasmon modifies dramatically the magneto-optical response and in particular the Faraday rotation. This makes graphene a unique playground for plasmon-controlled magneto-optical phenomena thanks to a cyclotron mass 2 orders of magnitude smaller than in conventional plasmonic materials such as noble metals.

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