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Chiral domain walls of Mn3Sn and their memory

Author

Listed:
  • Xiaokang Li

    (Huazhong University of Science and Technology
    PSL Research University)

  • Clément Collignon

    (PSL Research University
    Collège de France)

  • Liangcai Xu

    (Huazhong University of Science and Technology)

  • Huakun Zuo

    (Huazhong University of Science and Technology)

  • Antonella Cavanna

    (Université Paris-Saclay)

  • Ulf Gennser

    (Université Paris-Saclay)

  • Dominique Mailly

    (Université Paris-Saclay)

  • Benoît Fauqué

    (Collège de France)

  • Leon Balents

    (University of California)

  • Zengwei Zhu

    (Huazhong University of Science and Technology)

  • Kamran Behnia

    (PSL Research University
    Universität zu Köln)

Abstract

Magnetic domain walls are topological solitons whose internal structure is set by competing energies which sculpt them. In common ferromagnets, domain walls are known to be of either Bloch or Néel types. Little is established in the case of Mn3Sn, a triangular antiferromagnet with a large room-temperature anomalous Hall effect, where domain nucleation is triggered by a well-defined threshold magnetic field. Here, we show that the domain walls of this system generate an additional contribution to the Hall conductivity tensor and a transverse magnetization. The former is an electric field lying in the same plane with the magnetic field and electric current and therefore a planar Hall effect. We demonstrate that in-plane rotation of spins inside the domain wall would explain both observations and the clockwise or anticlockwise chirality of the walls depends on the history of the field orientation and can be controlled.

Suggested Citation

  • Xiaokang Li & Clément Collignon & Liangcai Xu & Huakun Zuo & Antonella Cavanna & Ulf Gennser & Dominique Mailly & Benoît Fauqué & Leon Balents & Zengwei Zhu & Kamran Behnia, 2019. "Chiral domain walls of Mn3Sn and their memory," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10815-8
    DOI: 10.1038/s41467-019-10815-8
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    Cited by:

    1. Xiaokang Li & Jahyun Koo & Zengwei Zhu & Kamran Behnia & Binghai Yan, 2023. "Field-linear anomalous Hall effect and Berry curvature induced by spin chirality in the kagome antiferromagnet Mn3Sn," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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