Marco Polini, Reza Asgari, Giovanni Borghi, Yafis Barlas, T. Pereg-Barnea, A. H. MacDonald
Published 2007-07-28Version 1
We report on a theoretical study of the influence of electron-electron interactions on ARPES spectra in graphene that is based on the random-phase-approximation and on graphene's massless Dirac equation continuum model. We find that level repulsion between quasiparticle and plasmaron resonances gives rise to a gap-like feature at small k. ARPES spectra are sensitive to the electron-electron interaction coupling strength $\alpha_{\rm gr}$ and might enable an experimental determination of this material parameter.
Comments: 5 Pages, 4 Figures, Submitted
Journal: Phys. Rev. B 77, 081411(R) (2008)
Spin-orbit effect on electron-electron interaction and fine structure of electron complexes in quantum dots
Electron-electron interactions as a dominant factor for transport in multiple-dot systems
Multifractality and electron-electron interaction at Anderson transitions
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