Infrared absorption by graphene-hBN heterostructures
arXiv:1309.2292 · doi:10.1088/1367-2630/15/12/123009
Abstract
We propose a theory of optical absorption in monolayer graphene-hexagonal boron nitride (hBN) heterostructures. In highly oriented heterostructures, the hBN underlay produces a long-range moiré superlattice potential for the graphene electrons which modifies the selection rules for absorption of incoming photons in the infrared to visible frequency range. The details of the absorption spectrum modification depend on the relative strength of the various symmetry-allowed couplings between the graphene electrons and the hBN, and the resulting nature of the reconstructed band structure.
8 pages, 3 figures
References in corpus (5)
- Boron nitride substrates for high-quality graphene electronics
- STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride
- Emergence of Superlattice Dirac Points in Graphene on Hexagonal Boron Nitride
- Zero Energy Modes and Gate-Tunable Gap in Graphene on hexagonal Boron Nitride
- Optical properties of the Hofstadter butterfly in the Moiré superlattice
Cited by in corpus (15)
- Spontaneous Strains and Gap in Graphene on Boron Nitride
- Effect of structural relaxation on the electronic structure of graphene on hexagonal boron nitride
- Moiré band model and band gaps of graphene on hexagonal boron nitride
- Gate-dependent Pseudospin Mixing in Graphene/Boron Nitride Moire Superlattices
- Moire superlattice effects in graphene/boron-nitride van der Waals heterostructures
- Emergence of massless Dirac fermions in graphene's Hofstadter butterfly at switches of the quantum Hall phase connectivity
- Transport and particle-hole asymmetry in graphene on boron nitride
- Enhanced Light-Matter Interaction in Graphene/h-BN van der Waals Heterostructures
- Anomalous optical response of graphene on hexagonal boron nitride substrates
- Moire miniband features in the angle-resolved photoemission spectra of graphene/hBN heterostructures
- Infrared absorption of closely-aligned heterostructures of monolayer and bilayer graphene with hexagonal boron nitride
- THz conductivity of graphene on boron nitride
- Enhanced valley polarization of graphene on hBN under circularly polarized light irradiation
- Impacts of in-plane strain on commensurate graphene/hexagonal boron nitride superlattices
- Multiple Hot-Carrier Collection in Photo-Excited Graphene Moire Superlattices