<i>Colloquium</i>: Quantum anomalous Hall effect
Cui‐Zu Chang, Chao‐Xing Liu, A. H. MacDonald
Abstract
The quantum Hall effect, discovered by von Klitzing more than 40 years ago, requires strong magnetic fields for its realization. More recently it was found that the effect can also be realized in zero magnetic field as a result of spontaneous time-reversal symmetry breaking. This Colloquium discusses the physics underlying this quantum anomalous Hall effect, the materials it is observed in, and potential applications.
Topics & Concepts
Topological insulatorPhysicsCondensed matter physicsQuantum Hall effectQuantum anomalous Hall effectGrapheneElectronTopology (electrical circuits)QuantumInsulator (electricity)Hall effectMagnetic fieldQuantum mechanicsOptoelectronicsCombinatoricsMathematicsTopological Materials and PhenomenaGraphene research and applications2D Materials and Applications