Moiré materials as tunable platforms for correlated quantum phases

Moiré materials are two-dimensional heterostructures that can be manipulated in an unprecedented way allowing us to manipulate energy levels and interactions of electrons. This is why they have emerged as a promising platform for the study and application of correlated phenomena. Various correlated phases and phase transitions have been realised including, for example, topological insulators and superconductors, while new phenomena are still being discovered. After a general introduction of this exciting material class, we focus on two examples of tunable correlated phases that demonstrate the rich phenomenology of these materials. We examine superconductivity in twisted WSe2, which shows similarities to high-temperature superconductors, and we discuss a semimetal-insulator transition in twisted bilayer graphene, which mimics the chiral phase transition of strongly interacting Dirac ermions. Both examples showcase the opportunities moiré materials offer for advancing our fundamental, as well as application-oriented understanding of quantum matter.