Band structure of twisted bilayer graphene on hexagonal boron nitride

Abstract

The effect of an hexagonal boron nitride (hBN) layer close aligned with twisted bilayer graphene (TBG) is studied. At sufficiently low angles between twisted bilayer graphene and hBN, ${\theta }_{hBN}\lesssim 2^{\circ }$, the graphene electronic structure is strongly disturbed. The width of the low energy peak in the density of states changes from $W\sim 5-10$ meV for a decoupled system to $\sim 20-30$ meV. Spikes in the density of states due to van Hove singularities are smoothed out. We find that for a realistic combination of the twist angle in the TBG and the twist angle between the hBN and the graphene layer the system can be described using a single moiré unit cell.

arXiv comment7+10 pages; main text + supplementary information

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Cited by in corpus (47)

• Superconductivity and strong interactions in a tunable moiré quasiperiodic crystal
• Imaging Chern mosaic and Berry-curvature magnetism in magic-angle graphene
• Moiré Commensurability and the Quantum Anomalous Hall Effect in Twisted Bilayer Graphene on Hexagonal Boron Nitride
• Tunable large Berry dipole in strained twisted bilayer graphene
• Strong Inter-valley Electron-Phonon Coupling in Magic-Angle Twisted Bilayer Graphene
• The quantum geometric origin of capacitance in insulators
• Band Structure and Superconductivity in Twisted Trilayer Graphene
• An accurate description of the structural and electronic properties of twisted bilayer graphene-boron nitride heterostructures
• Flat bands, strains, and charge distribution in twisted-bilayer hBN
• Non-linear Hall Effects: Mechanisms and Materials
• Adiabatic Approximation and Aharonov-Casher Bands in Twisted Homobilayer TMDs
• Designing Moiré Patterns by Strain
• Quasiperiodicity, band topology, and moiré graphene
• Engineering transistor-like optical gain in two-dimensional materials with Berry curvature dipoles
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• Domain wall competition in the Chern insulating regime of twisted bilayer graphene
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• Strain-induced large injection current in twisted bilayer graphene
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• Electron-phonon coupling and competing Kekulé orders in twisted bilayer graphene
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• Extended magic phase in twisted graphene multilayers
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• Misalignment instability in magic-angle twisted bilayer graphene on hexagonal boron nitride
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• Textured Exciton Insulators
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• Energy Spectrum Theory of Incommensurate Systems
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