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arXiv · 1407.2810

Generation and morphing of plasmons in graphene superlattices

Andrea Tomadin·Francisco Guinea·Marco Polini
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Abstract

Recent experimental studies on graphene on hexagonal Boron Nitride (hBN) have demonstrated that hBN is not only a passive substrate that ensures superb electronic properties of graphene's carriers, but that it actively modifies their massless Dirac fermion character through a periodic moir\'e potential. In this work we present a theory of the plasmon excitation spectrum of massless Dirac fermions in a moir\'e superlattice. We demonstrate that graphene-hBN stacks offer a rich platform for plasmonics in which control of plasmon modes can occur not only via electrostatic gating but also by adjusting e.g. the relative crystallographic

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Andrea Tomadin, Francisco Guinea, Marco Polini. 2014-07-10. Generation and morphing of plasmons in graphene superlattices. https://doi.org/10.1103/physrevb.90.161406

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