Correlated and topological physics in ABC-trilayer graphene moiré superlattices

The high tunability of two-dimensional (2D) materials makes them an optimal platform for simulating, achieving, and manipulating novel quantum states in condensed matter physics. Moiré flatband systems formed through lattice mismatch or twisting between atomic layers have recently been discovered, allowing for bridging 2D materials with strongly correlated and topological physics. In this review, we briefly discuss band folding in graphene/hexagonal boron nitride (hBN) moiré superlattices and related experimental results as well as introduce a general approach for developing 2D correlated systems and applying them in ABC trilayer graphene on hBN (ABC-TLG/hBN) moiré superlattices. We also compare the experimental results of the tunable correlated and topological phenomenon of ABC-TLG/hBN with those of other related moiré systems.