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arXiv · 1111.0615

Next-nearest-neighbor Tight-binding Model of Plasmons in Graphene

V. Kadirko·K. Ziegler·E. Kogan
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Abstract

In this paper we investigate the influence of the next-nearest-neighbor coupling of tight-binding model of graphene on the spectrum of plasmon excitations. The nearest-neighbor tight-binding model was previously used to calculate plasmon spectrum in the next paper [1]. We expand the previous results of the paper by the next-nearest-neighbor tight-binding model. Both methods are based on the numerical calculation of the dielectric function of graphene and loss function. Here we compare plasmon spectrum of the next-nearest and nearest-neighbor tight-binding models and find differences between plasmon dispersion of two models.

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V. Kadirko, K. Ziegler, E. Kogan. 2013-04-29. Next-nearest-neighbor Tight-binding Model of Plasmons in Graphene. https://doi.org/10.4236/graphene.2013.23014

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