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On the Hartree-Fock Ground State Manifold in Magic Angle Twisted Graphene Systems
Kevin D. Stubbs, Simon Becker, Lin Lin
Recent experiments have shown that magic angle twisted bilayer graphene (MATBG) can exhibit correlated insulator behavior at half-filling. Seminal theoretical results towards under…
Twisted TMDs in the small-angle limit: exponentially flat and trivial bands
Simon Becker, Mengxuan Yang
Recent experiments discovered fractional Chern insulator states at zero magnetic field in twisted bilayer MoTe [C23,Z23] and WSe [MD23]. In this article, we study the MacDo…
Exact ground state of interacting electrons in magic angle graphene
Simon Becker, Lin Lin, Kevin D. Stubbs
One of the most remarkable theoretical findings in magic angle twisted bilayer graphene (TBG) is the emergence of ferromagnetic Slater determinants as exact ground states for the i…
Magic angle (in)stability and mobility edges in disordered Chern insulators
Simon Becker, Izak Oltman, Martin Vogel
Why do experiments only observe one magic angle in twisted bilayer graphene, despite standard models like the chiral limit of the Bistritzer-MacDonald Hamiltonian predicting an inf…