2019/11/30 by Jianpeng Liu, Xi Dai
Materials Science · Physics and Astronomy · #Bilayer graphene #Condensed matter physics #Electron #Graphene #Graphene research and applications #Ground state #Physics #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.103.035427
published as Phys. Rev. B 103, 035427 (2021) · Added phase diagrams including nonlocal exchange interactions, and discussed effects of C3 breaking, included the exact one-shot all-band Hartree-Fock results in appendix
openalex created_date 2020/08/21 · arxiv created 2021/01/02 · openalex publication_date 2021/01/25 · arxiv updated 2021/01/27 · openalex updated_date 2026/08/05
Based on an all-band moir'e Hartree-Fock variational method, the authors study theoretically the correlated and topological states in magic-angle twisted bilayer graphene. They construct phase diagrams at various integer fillings. In particular, a so far unknown quantum state of matter, the moir'e orbital antiferromagnetic state, is identified as the possible ground state at some fillings.