Experimental Investigation of Non-Trivial Band Topology and Quantum Geometry in van der Waals Materials

The interplay between quantum confinement, non-trivial band topology, symmetries and electronic interactions gives rise to a rich variety of correlated phenomena and topological phases in van der Waals heterostructures. Here I will present our recent works on this topic, focusing on tunable transport of charges and Cooper pairs in quasi-1D topological insulators, emergent magnetism in rhomohedral-stacked few-layer graphene, and strongly renormalized band velocity and experimental evidence for strong-coupled superconductivity that is enabled by quantum geometry in twisted bilayer graphene.