Interaction corrections to the polarization function of graphene
arXiv:1206.3519 · doi:10.1103/PhysRevB.86.115408
Abstract
The first-order interaction correction to the irreducible polarization function of pristine graphene is studied at arbitrary relation between momentum and frequency. The results are used to calculate the dielectric function and the dynamical conductivity of graphene beyond the standard random-phase approximation. The computed static dielectric constant compares favorably with recent experiments.
9 pages, 4 figures. Submitted to Phys. Rev. B
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- Collective modes in a Dirac insulator with short range interactions
- Charge screening and carrier transport in AA-stacked bilayer graphene: tuning via a perpendicular electric field
- Electronic response of graphene to linelike charge perturbations
- Green functions in graphene monolayer with Coulomb interactions taken into account