Tue April 3, 2018 4:00 pm
Mott Insulator, Superconductor and Quantum Hall States in Moire Superlattice Graphene
Location:MIT 4 - 270
Ten Minute Talk:"Repulsive Photon-Photon interactions Mediated by Rydberg atoms" by
Sergio Cantu
The recent observation of Mott and superconducting states in `magic-angle’ twisted bilayer graphene underlines the promise of Moire superlattices for realizing a highly tunable many body physics platform. Both the energy and length scales involved are intermediate between atomic lattice scales of solids and optical lattice scales of ultra cold atoms, and allow for a range of new phenomena to be explored. I will discuss our recent attempts to model twisted bilayer graphene, and collective phenomena that emerge there. Time permitting I will describe a new class of quantum phase transitions that can be achieved by imposing superlattice potentials on graphene fractional quantum Hall states, and analogs in optical flux-lattices.