Maximally Localized Wannier Orbitals and the Anderson Impurity Model for Twisted Bilayer Graphene
ORAL
Abstract
We developed an effective Anderson impurity model to describe the low energy electronic properties of the twisted bilayer graphene. By using the method of selectively localizing Wannier orbitals, we construct a model that captures the key energetic and symmetry features of the original low energy bands and is possible for further calculation with non-perturbative methods. Using this model, we investigated the effect of interaction and the applied magnetic field near the half-filled region.
–
Presenters
-
Xi Chen
Center for Computational Quantum Physics, Flatiron Institute
Authors
-
Xi Chen
Center for Computational Quantum Physics, Flatiron Institute
-
Emanuel C Gull
Physics, University of Michigan, University of Michigan
-
Andrew Millis
Center for Computational Quantum Physics, Flatiron Institute, Physics, Columbia University, Columbia University, Department of Physics, Columbia University, Center for Computational Quantum Physics, Flatiron Institute, NY, NY, 10010, National Institute of Materials Science, Center for Computational Quantum Physics, Flatiorn Institute, Physics Department, Columbia University