Electrons in bilayer graphene
2007; Elsevier BV; Volume: 143; Issue: 1-2 Linguagem: Inglês
10.1016/j.ssc.2007.03.054
ISSN1879-2766
AutoresEdward McCann, David Abergel, Vladimir I. Fal’ko,
Tópico(s)Topological Materials and Phenomena
ResumoElectrons in bilayer graphene possess an unusual property: they are chiral quasiparticles characterized by Berry phase 2π. We review the tight-binding model of bilayer graphene which determines the band structure and low-energy quasiparticle properties of this material and we describe the optical manifestation of the existence of a pair of split-bands and low-energy branches in the bilayer spectrum. Then, we analyze the stability of a bilayer with respect to a ferroelectric transition and we model the self-consistent control of the interlayer asymmetry gap induced by a transverse electric field in a graphene-based field-effect transistor.
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