Semiconductor moiré materials realize a highly tunable platform for simulating Hubbard model physics on a triangular lattice. To date experimental studies have focused on the non-topological, flat band limit, where Mott insulators, Wigner crystals and stripe phases have been demonstrated. In this talk, I will discuss how tunable electronic correlations and nontrivial band topology can greatly enrich the electronic phase diagram of the system. Specifically, I will discuss the continuous Mott transition from a non-magnetic Mott insulator to a Fermi liquid and the experimental realization of the Kane-Mele-Hubbard model.

Meeting Link: To request for meeting link, please write to phweb@ust.hk.