Interplay of Coulomb and electron-phonon interactions in graphene
D. M. Basko, I. L. Aleiner
TL;DR
This paper investigates how Coulomb and electron-phonon interactions influence each other in graphene, revealing that Coulomb interactions specifically enhance coupling to certain phonons, with implications for understanding graphene's electronic properties.
Contribution
It introduces a renormalization group analysis of the mutual effects of Coulomb and electron-phonon interactions in graphene, highlighting selective phonon coupling enhancement.
Findings
Coulomb interaction enhances coupling to intervalley A1 optical phonons
No enhancement observed for intravalley E2 phonons
Renormalization group approach elucidates interaction interplay in graphene
Abstract
We consider mutual effect of the electron-phonon and strong Coulomb interactions on each other by summing up leading logarithmic corrections via the renormalization group approach. We find that the Coulomb interaction enhances electron coupling to the intervalley A1 optical phonons, but not to the intravalley E2 phonons.
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Taxonomy
TopicsGraphene research and applications · Advanced Physical and Chemical Molecular Interactions · Thermal properties of materials