Enormous Berry-Curvature-Based Anomalous Hall Effect in Topological Insulator (Bi,Sb)2Te3 on Ferrimagnetic Europium Iron Garnet beyond 400 K.

  title={Enormous Berry-Curvature-Based Anomalous Hall Effect in Topological Insulator (Bi,Sb)2Te3 on Ferrimagnetic Europium Iron Garnet beyond 400 K.},
  author={Wei Zou and Mengxin Guo and J. Wong and Zih-Ping Huang and Jui-Min Chia and Wei-Nien Chen and Sheng-Xin Wang and Keng-Yung Lin and Lawrence Boyu Young and Yen-Hsun Glen Lin and M. Yahyavi and Chien Ting Wu and Horng-Tay Jeng and Shang-Fan Lee and Tay-Rong Chang and Minghwei Hong and Jueinai Kwo},
  journal={ACS nano},
To realize the quantum anomalous Hall effect (QAHE) at elevated temperatures, the approach of magnetic proximity effect (MPE) was adopted to break the time-reversal symmetry in the topological insulator (Bi0.3Sb0.7)2Te3 (BST) based heterostructures with a ferrimagnetic insulator europium iron garnet (EuIG) of perpendicular magnetic anisotropy. Here we demonstrate large anomalous Hall resistance (RAHE) exceeding 8 Ω (ρAHE of 3.2 μΩ·cm) at 300 K and sustaining to 400 K in 35 BST/EuIG samples… 

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