Electron-phonon coupling and Raman spectroscopy in graphene

@article{Neto2007ElectronphononCA,
  title={Electron-phonon coupling and Raman spectroscopy in graphene},
  author={Antonio H. Castro Neto and Francisco Guinea},
  journal={Physical Review B},
  year={2007},
  volume={75},
  pages={045404}
}
  • A. Neto, F. Guinea
  • Published 24 August 2006
  • Materials Science, Physics
  • Physical Review B
We show that the electron-phonon coupling in graphene, in contrast with the nonrelativistic two-dimensional electron gas, leads to shifts in the phonon frequencies that are nontrivial functions of the electronic density. These shifts can be measured directly in Raman spectroscopy. We show that depending whether the chemical potential is smaller (larger) than half of the phonon frequency, the frequency shift can negative (positive) relative to the neutral case (when the chemical potential is at… 
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