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arXiv · 1412.7198

Non-local Plasma Spectrum of Graphene Interacting with a Thick Conductor

Godfrey Gumbs·Andrii Iurov·N. J. M. Horing
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Abstract

Self-consistent field theory is used to obtain the non-local plasmon dispersion relation of monolayer graphene which is Coulomb-coupled to a thick conductor. We calculate numerically the undamped plasmon excitation spectrum for arbitrary wave number. For gapped graphene, both the low-frequency (acoustic) and high frequency (surface) plasmons may lie within an undamped opening in the particle-hole region. Furthermore, we obtain plasmon excitations in a region of frequency-wave vector space which do not exist for free-standing gapped graphene.

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Godfrey Gumbs, Andrii Iurov, N. J. M. Horing. 2014-12-22. Non-local Plasma Spectrum of Graphene Interacting with a Thick Conductor. https://arxiv.org/abs/1412.7198

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