Nodal Surfaces in Photoemission from Twisted Bilayer Graphene
arXiv:1304.1728 · doi:10.1103/PhysRevB.87.205444
Abstract
Selection rules and interference effects in angle resolved photoemission spectra from twisted graphene bilayers are studied within a long wavelength theory for the electronic structure. Using a generic model for the interlayer coupling, we identify features in the calculated ARPES momentum distributions that are controlled by the singularities and topological character of its long wavelength spectrum. We distinguish spectral features that are controlled by single-layer singularities in the spectrum, their modification by gauge potentials in each layer generated by the interlayer coupling, and new energy-dependent interference effects that directly probe the interlayer coherence. The results demonstrate how the energy- and polarization- dependence of ARPES spectra can be used to characterize the interlayer coupling in twisted bilayer graphenes.
RevTex4: 17 pages, 12 figures
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Cited by in corpus (6)
- Superlattice structures in twisted bilayers of folded graphene
- Wafer-scale Programmed Assembly of One-atom-thick Crystals
- General theoretical description of angle-resolved photoemission spectroscopy of van der Waals structures
- Transport evidence of superlattice Dirac cones in graphene monolayer on twisted boron nitride substrate
- Theory of ARPES in Graphene-Based Moiré Superlattices
- Diagrammatic perturbation approach to moiré bands in twisted bilayer graphene