Physics – Condensed Matter – Materials Science
Scientific paper
2008-10-22
Phys. Rev. B 78, 193404 (2008)
Physics
Condensed Matter
Materials Science
accepted to Phys. Rev. B
Scientific paper
10.1103/PhysRevB.78.193404
The interplay of electron-phonon (el-ph) and electron-electron (el-el) interactions in epitaxial graphene is studied by directly probing its electronic structure. We found a strong coupling of electrons to the soft part of the A1g phonon evident by a kink at 150+/-15 meV, while the coupling of electrons to another expected phonon E2g at 195 meV can only be barely detected. The possible role of the el-el interaction to account for the enhanced coupling of electrons to the A1g phonon, and the contribution of el-ph interaction to the linear imaginary part of the self energy at high binding energy are also discussed. Our results reveal the dominant role of the A1g phonon in the el-ph interaction in graphene, and highlight the important interplay of el-el and el-ph interactions in the self energy of graphene.
Fedorov Alexi V.
Lanzara Alessandra
Siegel David A.
Zhou Shan-You
No associations
LandOfFree
Kohn anomaly and interplay of electron-electron and electron-phonon interactions in epitaxial graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Kohn anomaly and interplay of electron-electron and electron-phonon interactions in epitaxial graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kohn anomaly and interplay of electron-electron and electron-phonon interactions in epitaxial graphene will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-679884