Phonon-induced many-body renormalization of graphene electronic properties

Abstract

We develop a theory for the electron-phonon interaction effects on the electronic properties of graphene. We analytically calculate the electron self-energy, spectral function and band velocity renormalization due to phonon-mediated electron-electron interaction. We find that phonon-mediated electron-electron coupling has a large effect on the graphene band structure renormalization, and our analytic theory successfully captures the essential features of the observed graphene electron spectra in the ARPES experiments, predicting a kink at $\sim 200\mathrm{meV}$ below the Fermi level and a reduction of the band velocity by $\sim 10-20$ at the experimental doping level.

Minor typo in the vertical-axis label of Fig. 1 corrected; accepted version in PRL (in press)

References in corpus (3)

• The Raman Fingerprint of Graphene
• Chirality and Correlations in Graphene
• Inelastic carrier lifetime in graphene

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