TY - JOUR

T1 - Interlayer asymmetry gap in the electronic band structure of bilayer graphene.

AU - McCann, Edward

N1 - This is a pre-print of an article published in Physica Status Solidi B, 244 (11), 2007. (c) Wiley.

PY - 2007/11

Y1 - 2007/11

N2 - 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 2. 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.

AB - 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 2. 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.

KW - 73.21.-b • 73.63.-b • 81.05.Uw

U2 - 10.1002/pssb.200776105

DO - 10.1002/pssb.200776105

M3 - Journal article

VL - 244

SP - 4112

EP - 4117

JO - physica status solidi (b)

JF - physica status solidi (b)

SN - 0370-1972

IS - 11

ER -