Probing the low-temperature limit of the quantum anomalous Hall effect
Lei Pan, Xiaoyang Liu, Qinglin He, Alexander Stern, Gen Yin, Xiaoyu Che, Qiming Shao, Peng Zhang, Peng Deng, Chao‐Yao Yang, Brian Casas, Eun Sang Choi, Jing Xia, Xufeng Kou, Kang L. Wang
Abstract
systems using both transport and magneto-optical methods. By deliberate control of the thin-film thickness and doping profile, we revealed that the low occurring temperature of quantum anomalous Hall effect in current material system is a combined result of weak ferromagnetism and trivial band involvement. Our findings may provide important insights into the search for high-temperature quantum anomalous Hall insulator and other topologically related phenomena.
Topics & Concepts
Quantum anomalous Hall effectCondensed matter physicsQuantum Hall effectFerromagnetismQuantization (signal processing)LimitingHall effectDopingTopological insulatorQuantumPhysicsMaterials scienceMagnetic fieldQuantum mechanicsMathematicsEngineeringAlgorithmMechanical engineeringTopological Materials and PhenomenaGraphene research and applicationsElectronic and Structural Properties of Oxides