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X-ray study of ferroic octupole order producing anomalous Hall effect

Author

Listed:
  • Motoi Kimata

    (Tohoku University)

  • Norimasa Sasabe

    (Japan Synchrotron Radiation Research Institute (JASRI))

  • Kensuke Kurita

    (Tohoku University)

  • Yuichi Yamasaki

    (National Institute for Materials Science (NIMS)
    Center for Emergent Matter Science (CEMS), RIKEN
    PRESTO, Japan Science and Technology Agency (JST)
    High Energy Accelerator Research Organization)

  • Chihiro Tabata

    (Kyoto University)

  • Yuichi Yokoyama

    (Japan Synchrotron Radiation Research Institute (JASRI))

  • Yoshinori Kotani

    (Japan Synchrotron Radiation Research Institute (JASRI))

  • Muhammad Ikhlas

    (University of Tokyo)

  • Takahiro Tomita

    (University of Tokyo)

  • Kenta Amemiya

    (High Energy Accelerator Research Organization)

  • Hiroyuki Nojiri

    (Tohoku University)

  • Satoru Nakatsuji

    (University of Tokyo
    University of Tokyo
    Johns Hopkins University
    University of Tokyo)

  • Takashi Koretsune

    (Tohoku University)

  • Hironori Nakao

    (High Energy Accelerator Research Organization)

  • Taka-hisa Arima

    (Center for Emergent Matter Science (CEMS), RIKEN
    University of Tokyo)

  • Tetsuya Nakamura

    (Tohoku University
    Japan Synchrotron Radiation Research Institute (JASRI)
    Tohoku University)

Abstract

Recently found anomalous Hall, Nernst, magnetooptical Kerr, and spin Hall effects in the antiferromagnets Mn3X (X = Sn, Ge) are attracting much attention for spintronics and energy harvesting. Since these materials are antiferromagnets, the origin of these functionalities is expected to be different from that of conventional ferromagnets. Here, we report the observation of ferroic order of magnetic octupole in Mn3Sn by X-ray magnetic circular dichroism, which is only predicted theoretically so far. The observed signals are clearly decoupled with the behaviors of uniform magnetization, indicating that the present X-ray magnetic circular dichroism is not arising from the conventional magnetization. We have found that the appearance of this anomalous signal coincides with the time reversal symmetry broken cluster magnetic octupole order. Our study demonstrates that the exotic material functionalities are closely related to the multipole order, which can produce unconventional cross correlation functionalities.

Suggested Citation

  • Motoi Kimata & Norimasa Sasabe & Kensuke Kurita & Yuichi Yamasaki & Chihiro Tabata & Yuichi Yokoyama & Yoshinori Kotani & Muhammad Ikhlas & Takahiro Tomita & Kenta Amemiya & Hiroyuki Nojiri & Satoru N, 2021. "X-ray study of ferroic octupole order producing anomalous Hall effect," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25834-7
    DOI: 10.1038/s41467-021-25834-7
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