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Paper IPM / P / 8602 |
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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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