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Massive Dirac fermions in single-layer graphene

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IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/21/7/075303

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  1. NSF [DMR-0349881]

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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.

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