Research paperTheoreticalComputed Band StructureAncilla theory of twisted bilayer graphene I: topological Mott localization and pseudogap metal in twisted bilayer grapheneJing-Yu Zhao, Boran Zhou, Ya-Hui ZhangarXiv·2025·10.48550/arxiv.2502.17430·arXiv:2502.17430AbstractThe paper develops an ancilla-theory framework for twisted bilayer graphene (TBG) in which Mott localization is described by an exciton-like hybridization between physical electrons and ancilla fermions. It argues that the topology of TBG enforces a p-wave-like Mott hybridization near k = 0, leading to topological Mott localization, a topological Mott semimetal at integer filling, and a symmetric pseudogap metal at ν = -2 - x. The work presents effective theories, model wavefunctions, and continuum/band-model calculations for TBG and discusses implications for correlated insulators and superconductivity.Read more
Continuum/BM-model twisted bilayer graphene system used to analyze ancilla-theory Mott bands and spectral weights near the magic-angle regime.1 characterization1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureAncilla theory of twisted bilayer graphene I: topological Mott localization and pseudogap metal in twisted bilayer grapheneJing-Yu Zhao, Boran Zhou, Ya-Hui ZhangarXiv·2025·10.48550/arxiv.2502.17430·arXiv:2502.17430AbstractThe paper develops an ancilla-theory framework for twisted bilayer graphene (TBG) in which Mott localization is described by an exciton-like hybridization between physical electrons and ancilla fermions. It argues that the topology of TBG enforces a p-wave-like Mott hybridization near k = 0, leading to topological Mott localization, a topological Mott semimetal at integer filling, and a symmetric pseudogap metal at ν = -2 - x. The work presents effective theories, model wavefunctions, and continuum/band-model calculations for TBG and discusses implications for correlated insulators and superconductivity.Read more
Continuum/BM-model twisted bilayer graphene system used to analyze ancilla-theory Mott bands and spectral weights near the magic-angle regime.1 characterization1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureAncilla theory of twisted bilayer graphene I: topological Mott localization and pseudogap metal in twisted bilayer grapheneJing-Yu Zhao, Boran Zhou, Ya-Hui ZhangarXiv·2025·10.48550/arxiv.2502.17430·arXiv:2502.17430AbstractThe paper develops an ancilla-theory framework for twisted bilayer graphene (TBG) in which Mott localization is described by an exciton-like hybridization between physical electrons and ancilla fermions. It argues that the topology of TBG enforces a p-wave-like Mott hybridization near k = 0, leading to topological Mott localization, a topological Mott semimetal at integer filling, and a symmetric pseudogap metal at ν = -2 - x. The work presents effective theories, model wavefunctions, and continuum/band-model calculations for TBG and discusses implications for correlated insulators and superconductivity.Read more
Continuum/BM-model twisted bilayer graphene system used to analyze ancilla-theory Mott bands and spectral weights near the magic-angle regime.1 characterization1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureAncilla theory of twisted bilayer graphene I: topological Mott localization and pseudogap metal in twisted bilayer grapheneJing-Yu Zhao, Boran Zhou, Ya-Hui ZhangarXiv·2025·10.48550/arxiv.2502.17430·arXiv:2502.17430AbstractThe paper develops an ancilla-theory framework for twisted bilayer graphene (TBG) in which Mott localization is described by an exciton-like hybridization between physical electrons and ancilla fermions. It argues that the topology of TBG enforces a p-wave-like Mott hybridization near k = 0, leading to topological Mott localization, a topological Mott semimetal at integer filling, and a symmetric pseudogap metal at ν = -2 - x. The work presents effective theories, model wavefunctions, and continuum/band-model calculations for TBG and discusses implications for correlated insulators and superconductivity.Read more
Continuum/BM-model twisted bilayer graphene system used to analyze ancilla-theory Mott bands and spectral weights near the magic-angle regime.1 characterization1 figureSimulatedCStudied MaterialExpand