Next-Nearest-Neighbor Tight-Binding Model of Plasmons in Graphene

Vladimir Kadirko, Klaus Ziegler, Eugene Kogan

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)97-101
Number of pages5
Issue number3
StatePublished - Jul 2013


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