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Large anomalous Hall effect in the chiral-lattice antiferromagnet CoNb3S6

Author

Listed:
  • Nirmal J. Ghimire

    (Argonne National Laboratory)

  • A. S. Botana

    (Argonne National Laboratory)

  • J. S. Jiang

    (Argonne National Laboratory)

  • Junjie Zhang

    (Argonne National Laboratory)

  • Y.-S. Chen

    (The University of Chicago)

  • J. F. Mitchell

    (Argonne National Laboratory)

Abstract

An ordinary Hall effect in a conductor arises due to the Lorentz force acting on the charge carriers. In ferromagnets, an additional contribution to the Hall effect, the anomalous Hall effect (AHE), appears proportional to the magnetization. While the AHE is not seen in a collinear antiferromagnet, with zero net magnetization, recently it has been shown that an intrinsic AHE can be non-zero in non-collinear antiferromagnets as well as in topological materials hosting Weyl nodes near the Fermi energy. Here we report a large anomalous Hall effect with Hall conductivity of 27 Ω−1 cm−1 in a chiral-lattice antiferromagnet, CoNb3S6 consisting of a small intrinsic ferromagnetic component (≈0.0013 μB per Co) along c-axis. This small moment alone cannot explain the observed size of the AHE. We attribute the AHE to either formation of a complex magnetic texture or the combined effect of the small intrinsic moment on the electronic band structure.

Suggested Citation

  • Nirmal J. Ghimire & A. S. Botana & J. S. Jiang & Junjie Zhang & Y.-S. Chen & J. F. Mitchell, 2018. "Large anomalous Hall effect in the chiral-lattice antiferromagnet CoNb3S6," Nature Communications, Nature, vol. 9(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05756-7
    DOI: 10.1038/s41467-018-05756-7
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    Cited by:

    1. Meng Wang & Katsuhiro Tanaka & Shiro Sakai & Ziqian Wang & Ke Deng & Yingjie Lyu & Cong Li & Di Tian & Shengchun Shen & Naoki Ogawa & Naoya Kanazawa & Pu Yu & Ryotaro Arita & Fumitaka Kagawa, 2023. "Emergent zero-field anomalous Hall effect in a reconstructed rutile antiferromagnetic metal," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Pyeongjae Park & Woonghee Cho & Chaebin Kim & Yeochan An & Yoon-Gu Kang & Maxim Avdeev & Romain Sibille & Kazuki Iida & Ryoichi Kajimoto & Ki Hoon Lee & Woori Ju & En-Jin Cho & Han-Jin Noh & Myung Joo, 2023. "Tetrahedral triple-Q magnetic ordering and large spontaneous Hall conductivity in the metallic triangular antiferromagnet Co1/3TaS2," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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