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IPM
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“School of Physic”

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Paper   IPM / Physic / 8602
School of Physics
  Title:   Plasmons and The Spectral Function of Graphene
  Author(s): 
1.  M. Polini
2.  R. Asgari
3.  G. Borghi
4.  Y. Barlas
5.  T. Pereg-Barnea
6.  A.H. MacDonald
  Status:   Published
  Journal: Phys. Rev. B (R)
  Vol.:  77
  Year:  2008
  Pages:   081411
  Supported by:  IPM
  Abstract:
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 bare holes and a strong plasmaron resonance gives rise to a gap-like feature at small k. ARPES spectra are sensitive to the electron-electron interaction coupling strength αgr and might enable an experimental determination of this material parameter.

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