Engineering Correlation and Topology in Two-Dimensional Moire Superlattices
Van der Waals heterostructures of atomically thin crystals offer an exciting new platform to design novel electronic and optical properties. In this talk, I will describe a general approach to engineer correlated and topological physics using moire superlattice in two dimensional heterostructures. I will show that we can realize many important condensed matter physics phenomena, ranging from correlated Mott insulator and superconductivity to ferromagnetism and topological Chern insulator, in a single moire superlattice between ABC trilayer graphene and boron nitride. I will also discuss the emergence of correlated Mott insulator and Wigner crystal states in WS2/WSe2 moire heterostructures.