You are here

Symmetry, Maximally Localized Wannier States, And A Low-energy Model For Twisted Bilayer Graphene Narrow Bands

Title: Symmetry, Maximally Localized Wannier States, And A Low-energy Model For Twisted Bilayer Graphene Narrow Bands.
4 views
0 downloads
Name(s): Kang, Jian, author
Vafek, Oskar, author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-09-28
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: We build symmetry-adapted maximally localized Wannier states and construct the low-energy tight-binding model for the four narrow bands of twisted bilayer graphene. We do so when the twist angle is commensurate near the "magic" value and the narrow bands are separated from the rest of the bands by energy gaps. On each layer and sublattice, every Wannier state has three peaks near the triangular moire lattice sites. However, each Wannier state is localized and centered around a site of the honeycomb lattice that is dual to the triangular moire lattice. The space group and the time-reversal symmetries are realized locally. The corresponding tight-binding model provides a starting point for studying the correlated many-body phases.
Identifier: FSU_libsubv1_wos_000446282000002 (IID), 10.1103/PhysRevX.8.031088 (DOI)
Keywords: superlattices, superconductivity
Publication Note: The publisher’s version of record is available at https://doi.org/10.1103/PhysRevX.8.031088
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000446282000002
Owner Institution: FSU
Is Part Of: Physical Review X.
2160-3308
Issue: iss. 3, vol. 8

Choose the citation style.
Kang, J., & Vafek, O. (2018). Symmetry, Maximally Localized Wannier States, And A Low-energy Model For Twisted Bilayer Graphene Narrow Bands. Physical Review X. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000446282000002