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作 者:Chang Liu YunYi Zang Yan Gong Ke He XuCun Ma QiKun Xue YaYu Wang
机构地区:[1]State Key Laboratory of Low Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China [2]Beijing Academy of Quantum Information Sciences,Beijing 100193,China [3]Frontier Science Center for Quantum Information,Beijing 100084,China
出 处:《Science China(Physics,Mechanics & Astronomy)》2022年第6期116-122,共7页中国科学:物理学、力学、天文学(英文版)
基 金:This work was supported by the Basic Science Center Project of National Natural Science Foundation of China(Grant No.51788104);the National Key R&D Program of China(Grant Nos.2018YFA0307100,and 2018YFA0305603);This work was supported in part by the Beijing Advanced Innovation Center for Future Chip(ICFC).
摘 要:The chirality associated with broken time-reversal symmetry in magnetically doped topological insulators has important implications for the quantum transport phenomena.Here we report anomalous Hall effect studies in Mn-and Cr-doped Bi_(2)Te_(3) topological insulators with varied thicknesses and doping contents.By tracing the magnitude of the anomalous Hall resistivity,we find that the Mn-type anomalous Hall effect characterized with clockwise chirality is strengthened by the reduction of film thickness,which is opposite to that of the Cr-type anomalous Hall effect with counterclockwise chirality.We provide a phenomenological physical picture to explain the evolution of the magnetic order and the anomalous Hall chirality in magnetically doped topological insulators.
关 键 词:topological insulator anomalous Hall effect CHIRALITY magnetic order
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