Speaker
Description
Recent experiments on moiré transition metal dichalcogenides have established this class of compounds as a highly tunable platform for the study of correlated electronic phenomena such as the correlation-driven Mott metal-insulator transition, quantum criticality and superconductivity. At the same time these materials can be approximately described in terms of the single-band moiré Hubbard model on a triangular lattice. We investigate the properties of this model at half-filling, where it hosts a variety of metallic, insulating and magnetic phases and we study in detail their interplay with an externally applied Zeemann field.
At finite temperatures we employ the dynamical mean-field theory (DMFT) and its cluster extensions CDMFT and DCA in order to capture both local and non-local correlations, while at $T=0$ the recently developed Variational Discrete Action Theory (VDAT) is used to elucidate the polarization transition.
