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arXiv · 1206.4466

Graphene plasmon polaritons: Substrate effects and nonlocal response

Thomas Christensen·Antti-Pekka Jauho·N. Asger Mortensen
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Abstract

This paper is withdrawn by the authors. We theoretically examine graphene plasmon polaritons (GPP) supported by a sheet of graphene sandwiched between two dielectric media. The influence of the dielectric environment on GPP's is studied within local and nonlocal descriptions of graphene's conductivity. We demonstrate that a local-response approximation invariably leads, counter-intuitively, to a substrate-independent surface plasmon frequency. On the other hand, the nonlocal description of the electron gas allows the presence of non-vertical inter-band transitions which changes the results qualitatively: the GPP's now depend on the surroundings, and the singularity in the local GPP dispersion relation is removed.

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Thomas Christensen, Antti-Pekka Jauho, N. Asger Mortensen. 2012-10-23. Graphene plasmon polaritons: Substrate effects and nonlocal response. https://arxiv.org/abs/1206.4466

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