Infrared absorption of closely-aligned heterostructures of monolayer and bilayer graphene with hexagonal boron nitride
arXiv:1507.03813 · doi:10.1103/PhysRevB.92.115430
Abstract
We model optical absorption of monolayer and bilayer graphene on hexagonal boron nitride for the case of closely-aligned crystal lattices. We show that perturbations with different spatial symmetry can lead to similar absorption spectra. We suggest that a study of the absorption spectra as a function of the doping for almost completely full first miniband is necessary to extract meaningful information about the moire characteristics from optical absorption measurements and to distinguish between various theoretical proposals for the physically realistic interaction. Also, for bilayer graphene, the ability to compare spectra for the opposite signs of electric-field-induced interlayer asymmetry might provide additional information about the moire parameters.
7 pages, 6 figures, minor changes, version accepted to PRB
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Cited by in corpus (7)
- Electronic properties of graphene-based bilayer systems
- Anomalous optical response of graphene on hexagonal boron nitride substrates
- Moire miniband features in the angle-resolved photoemission spectra of graphene/hBN heterostructures
- Interaction-induced metallic state in graphene on hexagonal boron nitride
- Enhanced valley polarization of graphene on hBN under circularly polarized light irradiation
- THz conductivity of graphene on boron nitride
- Enhanced H storage capacity of the bilayer hexagonal Boron Nitride(h-BN) incorporating Van der Waals interaction under applied external electric field