Inter-band magnetoplasmons in mono- and bi-layer graphene

Details Inter-band magnetoplasmons in mono- and bi-layer graphene Inter-band magnetoplasmons in mono- and bi-layer graphene

2008-04-15

arxiv.org/abs/0804.2342v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 2 figures

Scientific paper

10.1088/0953-8984/20/42/425202

Collective excitations spectrum of Dirac electrons in mono and bilayer graphene in the presence of a uniform magnetic field is investigated. Analytical results for inter-Landau band plasmon spectrum within the self-consistent-field approach are obtained. SdH type oscillations that are a monotonic function of the magnetic field are observed in the plasmon spectrum of both mono- and bi-layer graphene systems. The results presented are also compared with those obtained in conventional 2DEG. The chiral nature of the quasiparticles in mono and bilayer graphene system results in the observation of $\pi$ and $2\pi$ Berry's phase in the SdH- type oscillations in the plasmon spectrum.

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