Double moiré with a twist: super-moiré in encapsulated graphene
arXiv:1910.00345 · doi:10.1021/acs.nanolett.9b04058
Abstract
A periodic spatial modulation, as created by a moiré pattern, has been extensively studied with the view to engineer and tune the properties of graphene. Graphene encapsulated by hexagonal boron nitride (hBN) when slightly misaligned with the top and bottom hBN layers experiences two interfering moiré patterns, resulting in a so-called super-moiré (SM). This leads to a lattice and electronic spectrum reconstruction. A geometrical construction of the non-relaxed SM patterns allows us to indicate qualitatively the induced changes in the electronic properties and to locate the SM features in the density of states and in the conductivity. To emphasize the effect of lattice relaxation, we report band gaps at all Dirac-like points in the hole doped part of the reconstructed spectrum, which are expected to be enhanced when including interaction effects. Our result is able to distinguish effects due to lattice relaxation and due to the interfering SM and provides a clear picture on the origin of recently experimentally observed effects in such trilayer heterostuctures.
17 pages, 8 figures, uses iopart.class, Supplementary information
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Cited by in corpus (26)
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- An accurate description of the structural and electronic properties of twisted bilayer graphene-boron nitride heterostructures
- Multi-scale lattice relaxation in general twisted trilayer graphenes
- Electron-hole asymmetry and band gaps of commensurate double moire patterns in twisted bilayer graphene on hexagonal boron nitride
- Enhanced electron-phonon coupling in doubly aligned hexagonal boron nitride bilayer graphene heterostructure
- Controlled alignment of supermoiré lattice in double-aligned graphene heterostructures
- Commensurate and incommensurate double moiré interference in twisted trilayer graphene
- Moire Band Structures of the Double twisted Few Layer Graphene
- Topological multiferroic order in twisted transition metal dichalcogenide bilayers
- Topological Flat Bands in Graphene Super-moiré Lattices
- Higher-order Bragg gaps in the electronic band structure of bilayer graphene renormalized by recursive supermoiré potential
- Electric field-tunable layer polarization in graphene/boron nitride twisted quadrilayer superlattices
- Moiré effects in graphene--hBN heterostructures
- Band gap formation in commensurate twisted bilayer graphene/hBN moiré lattices
- Emergence of strain-induced moiré patterns and pseudo-magnetic field confined states in graphene
- Magnetic Bloch States at Integer Flux Quanta Induced by Super-moiré Potential in Graphene Aligned with Twisted Boron Nitride
- Adhesion and Reconstruction of Graphene/Hexagonal Boron Nitride Heterostructures: A Quantum Monte Carlo Study
- Strong gate-tunability of flat bands in bilayer graphene due to moiré encapsulation between hBN monolayers
- Moiré fractals in twisted graphene layers
- Moiré flat bands and antiferroelectric domains in lattice relaxed twisted bilayer hexagonal boron nitride under perpendicular electric fields
- Renormalized Magic Angles in Asymmetric Twisted Graphene Multilayers
- Review of the tight-binding method applicable to the properties of moiré superlattices
- Moiré Imaging in Twisted Bilayer Graphene Aligned on Hexagonal Boron Nitride
- Electric field tunable bands in doubly aligned bilayer graphene hBN moire superlattice
- Energy Spectrum Theory of Incommensurate Systems
- Experimental realisation of Dual Periodicity Moiré Superlattice in a MoSe/WSe Heterobilayer