Anomalous Hall crystals in rhombohedral multilayer graphene. II. General mechanism and a minimal model
Tomohiro Soejima, Junkai Dong, Taige Wang, Tianle Wang, Michael P. Zaletel, Ashvin Vishwanath, Daniel E. Parker
Abstract
Anomalous Hall crystals (AHCs) form a new phase of matter with spontaneous crystallization and quantized Hall response. It has been invoked to explain a recent experiment on rhombohedral pentalayer graphene, but a simple conceptual understanding of its existence has been lacking. Here, the authors propose a simple three-patch model that captures how quantum mechanical exchange interactions can stabilize the AHC phase, and apply it to analyze the phenomenology of rhombohedral pentalayer graphene.
Topics & Concepts
Trigonal crystal systemGrapheneMechanism (biology)Condensed matter physicsMaterials scienceHall effectCrystallographyPhysicsNanotechnologyChemistryCrystal structureQuantum mechanicsElectrical resistivity and conductivityGraphene research and applicationsFullerene Chemistry and ApplicationsAdvanced Physical and Chemical Molecular Interactions