Many-body exchange-correlation effects in graphene
arXiv:0707.4674 · doi:10.1016/j.physe.2007.10.043
Abstract
We calculate, within the leading-order dynamical-screening approximation, the electron self-energy and spectral function at zero temperature for extrinsic (or gated/doped) graphene. We also calculate hot carrier inelastic scattering due to electron-electron interactions in graphene. We obtain the inelastic quasiparticle lifetimes and associated mean free paths from the calculated self-energy. The linear dispersion and chiral property of graphene gives energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors.
Submitted on July 8, 2007 to EP2DS-17, Genova, Italy