Model for Metal-Insulator Transition in Graphene Superlattices and Beyond
arXiv:1803.09699 · doi:10.1103/PhysRevB.98.045103
Abstract
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.
Maintext: 10 pages, 5 figures. Supplementary Material: 5 pages, 4 figures