Quasiparticle Energies and Band Gaps in Graphene Nanoribbons
Quasiparticle Energies and Band Gaps in Graphene Nanoribbons
We present calculations of the quasiparticle energies and band gaps of graphene nanoribbons (GNRs) carried out using a first-principles many-electron Green's function approach within the $GW$ approximation. Because of the quasi-one-dimensional nature of a GNR, electron-electron interaction effects due to the enhanced screened Coulomb interaction and confinement geometry greatly influence …