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arXiv · 1204.4372

Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene

I. Crassee·M. Orlita·M. Potemski·A. L. Walter·M. Ostler·Th. Seyller·I. Gaponenko·J. Chen·A. B. Kuzmenko
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Abstract

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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I. Crassee, M. Orlita, M. Potemski, A. L. Walter, M. Ostler, Th. Seyller, I. Gaponenko, J. Chen, A. B. Kuzmenko. 2012-04-26. Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene. https://doi.org/10.1021/nl300572y

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