title: Massive Dirac fermions in single-layer graphene.
abstract: Motivated by the results of recent photoemission and tunneling studies, we discuss potential many-body sources of a finite gap in the Dirac fermion spectrum of graphene. Specifically, we focus on the putative Peierls- and Cooper-like pairing instabilities, which can be driven by sufficiently strong Coulomb and electron-phonon interactions, respectively. Our results compare favorably with the available experimental and Monte Carlo data.
authors.affiliation: Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, USA.
authors.forename: D V
authors.initials: DV
authors.lastname: Khveshchenko