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Advanced Materials

Thin Films of Magnetically Doped Topological Insulator with Carrier-Independent Long-Range Ferromagnetic Order

Authors

  • Cui-Zu Chang,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Jinsong Zhang,

    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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  • Minhao Liu,

    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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  • Zuocheng Zhang,

    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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  • Xiao Feng,

    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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  • Kang Li,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Li-Li Wang,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Xi Chen,

    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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  • Xi Dai,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Zhong Fang,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Xiao-Liang Qi,

    1. Department of Physics, Stanford University, Stanford, California 94305-4045, USA
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  • Shou-Cheng Zhang,

    1. Department of Physics, Stanford University, Stanford, California 94305-4045, USA
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  • Yayu Wang,

    Corresponding author
    1. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
    • State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China.
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  • Ke He,

    Corresponding author
    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
    • Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Xu-Cun Ma,

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Qi-Kun Xue

    1. Beijing National Laboratory for Condensed Matter, Physics and Institute of Physics, The Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. State Key Lab of Low Dimensinal Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P. R. China
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Abstract

Thin films of magnetically doped topological insulators Cr0.22(BixSb1-x)1.78Te3 are found to possess carrier-independent long-range ferromagnetic order with perpendicular magnetic anisotropy. The anomalous Hall resistance is greatly enhanced, up to one quarter of quantum Hall resistance, by depletion of the carriers. The results demonstrate this material as a promising system to realize the quantized anomalous Hall effect.

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