Magnetic moiré systems: a review

This review synthesizes recent advancements in the study of moiré magnetism. This emerging field, at the intersection of twistronics, topology, and strongly correlated systems, explores novel phenomena that arise when moiré potentials influence the magnetism of two-dimensional (2D) systems. The manuscript presents recent advances highlighting the interfacial incongruity as a novel mechanism for regulating the magnetism of 2D materials and for the manifestation of various phenomena in twisted and mismatched magnetic 2D interfaces. The manuscript addresses seminal and recent experimental and theoretical advances associated with both small- and large-period magnetic moiré lattices, including novel magnetic phases, low-energy and topological magnetic excitations, magnetic and electronic transport, optical properties, phase transitions, and prospective applications of these materials. Moiré magnetism signifies a promising frontier for manipulating complex quantum states in quantum matter. The ongoing advances in this field are poised to impact condensed matter physics, materials science, and quantum information science.