Research paperTheoreticalComputed PhononTopological domain-wall states from Umklapp scattering in twisted bilayer grapheneJuncheng Li, Cong Chen, Wang YaoarXiv·2025·10.1021/acs.nanolett.5c04006·arXiv:2508.03761AbstractWe unveil the role of intervalley Umklapp scattering in large-angle twisted bilayer graphene at theta = 21.8 degrees. By constructing symmetry-constrained effective k·p models for D₆ and D₃ stackings and validating them with atomistic Slater-Koster tight-binding calculations, we show that structural chirality governs low-energy band topology and enables topological domain-wall states at chirality-reversal interfaces.Read more
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₆ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₃ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Untwisted bilayer graphene reference systems used for band-structure comparison (AA and AB stackings).1 characterization1 figureReferenceCReference MaterialExpand
Research paperTheoreticalComputed PhononTopological domain-wall states from Umklapp scattering in twisted bilayer grapheneJuncheng Li, Cong Chen, Wang YaoarXiv·2025·10.1021/acs.nanolett.5c04006·arXiv:2508.03761AbstractWe unveil the role of intervalley Umklapp scattering in large-angle twisted bilayer graphene at theta = 21.8 degrees. By constructing symmetry-constrained effective k·p models for D₆ and D₃ stackings and validating them with atomistic Slater-Koster tight-binding calculations, we show that structural chirality governs low-energy band topology and enables topological domain-wall states at chirality-reversal interfaces.Read more
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₆ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₃ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Untwisted bilayer graphene reference systems used for band-structure comparison (AA and AB stackings).1 characterization1 figureReferenceCReference MaterialExpand
Research paperTheoreticalComputed PhononTopological domain-wall states from Umklapp scattering in twisted bilayer grapheneJuncheng Li, Cong Chen, Wang YaoarXiv·2025·10.1021/acs.nanolett.5c04006·arXiv:2508.03761AbstractWe unveil the role of intervalley Umklapp scattering in large-angle twisted bilayer graphene at theta = 21.8 degrees. By constructing symmetry-constrained effective k·p models for D₆ and D₃ stackings and validating them with atomistic Slater-Koster tight-binding calculations, we show that structural chirality governs low-energy band topology and enables topological domain-wall states at chirality-reversal interfaces.Read more
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₆ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₃ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Untwisted bilayer graphene reference systems used for band-structure comparison (AA and AB stackings).1 characterization1 figureReferenceCReference MaterialExpand
Research paperTheoreticalComputed PhononTopological domain-wall states from Umklapp scattering in twisted bilayer grapheneJuncheng Li, Cong Chen, Wang YaoarXiv·2025·10.1021/acs.nanolett.5c04006·arXiv:2508.03761AbstractWe unveil the role of intervalley Umklapp scattering in large-angle twisted bilayer graphene at theta = 21.8 degrees. By constructing symmetry-constrained effective k·p models for D₆ and D₃ stackings and validating them with atomistic Slater-Koster tight-binding calculations, we show that structural chirality governs low-energy band topology and enables topological domain-wall states at chirality-reversal interfaces.Read more
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₆ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Commensurate twisted bilayer graphene at theta = 21.8 degrees in the D₃ configuration.2 characterizations2 figuresSimulatedCStudied MaterialExpand
Untwisted bilayer graphene reference systems used for band-structure comparison (AA and AB stackings).1 characterization1 figureReferenceCReference MaterialExpand
