Interlayer asymmetry gap in the electronic band structure of bilayer graphene

By E. McCann. 2006

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The low‐energy electronic band structure of bilayer graphene consists of four bands: a pair of bands split from zero energy by the interlayer coupling and a pair of bands which touch at zero energy in a nominally undoped system. The latter support massive, chiral quasiparticles with a parabolic dispersion and Berry phase 2π. Asymmetry between the potential energies of the layers opens a tuneable gap between the conduction and valence bands. A self‐consistent Hartree approximation is used to model the control of such an interlayer asymmetry gap induced by a transverse electric field in a graphene‐based field‐effect transistor. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Subfields: Materials Chemistry, Organic Chemistry

View Paper: https://www.semanticscholar.org/paper/29bd76c9fe767c6abd27a6f5272046e97e543007

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Citations in the corpus

Colloquium: The transport properties of graphene: An introduction (2010, background): “The main limiting factor of all graphene properties, in what concerns its application to nanoelectronics, is, most likely, the lack of a true band gap, as opposed to the biased graphene bilayer (Castro et al., 2007; McCann, 2006; McCann and Falko, 2006).”
Gate-induced insulating state in bilayer graphene devices. (2007, background): “e not aware of other possible explanations. It is clear from the experiments that a possible gap induced in the bilayer device is rather small. This is consistent with recent theoretical calculations [10,13], which, for zero carrier density and for electric field values of the order of those achieve”
Symmetry breaking in few layer graphene films (2007, background): “the B atoms of the first layer and the A atoms of the second layer [49, 50, 24]:”
Magical Allotropes of Carbon: Prospects and Applications (2016, background): “Therefore, the electrons and holes of GR are called as Dirac fermions, whereas the six edges of the Brillouin zone are named as the Dirac points.(248,249) Owing to their zero density at the Dirac points, the conductivity is comparable very less.”