Electron-phonon bound state in graphene
arXiv:1201.2723 · doi:10.1103/PhysRevB.85.205453
Abstract
The fine structure of the Dirac energy spectrum in graphene induced by electron-optical phonon coupling is investigated in the portion of the spectrum near the phonon emission threshold. The derived new dispersion equation in the immediate neighborhood below the phonon threshold corresponds to an electron-phonon bound state. We find that the singular vertex corrections beyond perturbation theory increase strongly the electron-phonon binding energy. The predicted enhancement of the effective electron-phonon coupling can be measured using angle-resolved spectroscopy.
5 pages, 3 figures
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- Chiral Polaron Formation in Graphene
- Zone-Boundary Phonon Induced Mini Band Gap Formation in Graphene
- Electron-phonon bound states in graphene in a perpendicular magnetic field