Prof. Sid Parameswaran
University of Oxford

Abstract: Twisted M-Point Materials: a new moiré platform for strong correlations

I will discuss recent theoretical work exploring correlated phases in heterostructures generated by twisting individual 2D layers whose low-energy electronic dispersions lie at the Brillouin zone M-point. The resulting moiré system has low-energy electrons with a valley-filtered anisotropy, such that each valley to good approximation is only dispersive in a single direction. Remarkably, the problem is accessible via two different sign-problem free quantum Monte Carlo algorithms along two distinct parameter axes, providing a window into the physics of strong correlations in this new family of moiré materials.