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Many-body exchange-correlation effects in graphene

TitleMany-body exchange-correlation effects in graphene
Publication TypeJournal Article
Year of Publication2008
AuthorsE. H. Hwang, B Y-K. Hu, and S. Das Sarma
JournalPhysica E: Low-dimensional Systems and Nanostructures
Volume40
Pagination1653–1655
Date Publishedmar
ISSN13869477
Keywords2008, Single Fellow
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.

URLhttp://arxiv.org/abs/0707.4674