Model for the metal-insulator transition in graphene superlattices and beyond
Model for the metal-insulator transition in graphene superlattices and beyond
We propose a two-orbital Hubbard model on an emergent honeycomb lattice to describe the low-energy physics of twisted bilayer graphene. Our model provides a theoretical basis for studying metal-insulator transition, Landau level degeneracy lifting and unconventional superconductivity that are recently observed.