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Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization

Author

Listed:
  • Dong Wang

    (Chinese Academy of Sciences
    University of Science and Technology of China
    Chinese Academy of Sciences)

  • Liu Yang

    (University of Science and Technology of China
    Chinese Academy of Sciences)

  • Zhen Hu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Fang Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yage Yang

    (University of Chinese Academy of Sciences)

  • Xiaokai Pan

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhuo Dong

    (Chinese Academy of Sciences)

  • Shijian Tian

    (Donghua University)

  • Libo Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Li Han

    (China Jiliang University)

  • Mengjie Jiang

    (Chinese Academy of Sciences
    Donghua University)

  • Keqin Tang

    (University of Science and Technology of China
    Chinese Academy of Sciences)

  • Fuxing Dai

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Kai Zhang

    (Chinese Academy of Sciences)

  • Wei Lu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xiaoshuang Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lin Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Weida Hu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Effective detection is critical for terahertz applications, yet it remains hindered by the unclear mechanisms that necessitate a deeper understanding of photosensitive materials with exotic physical phenomena. Here, we investigate the terahertz detection capabilities of the two-dimensional antiferromagnetic semimetal NbFeTe2. Our study reveals that the interaction between antiferromagnetic magnetic moments and electron spin induces disordered carriers to hop between localized states, resulting in a nonlinear increase in responsivity as temperature decreases. We integrate asymmetric electrodes to generate a sufficient Seebeck potential, enabling carriers to overcome the barrier of localized states and achieve reordering at room temperature. Additionally, the self-powered performance of the NbFeTe₂/graphene heterojunction is optimized by the built-in electric field, achieving peak responsivity of 220 V W-1 and noise equivalent power of

Suggested Citation

  • Dong Wang & Liu Yang & Zhen Hu & Fang Wang & Yage Yang & Xiaokai Pan & Zhuo Dong & Shijian Tian & Libo Zhang & Li Han & Mengjie Jiang & Keqin Tang & Fuxing Dai & Kai Zhang & Wei Lu & Xiaoshuang Chen &, 2025. "Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55426-0
    DOI: 10.1038/s41467-024-55426-0
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