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Field-tunable toroidal moment in a chiral-lattice magnet

Author

Listed:
  • Lei Ding

    (Neutron Scattering Division)

  • Xianghan Xu

    (Rutgers Center for Emergent Materials and Department of Physics and Astronomy)

  • Harald O. Jeschke

    (Okayama University)

  • Xiaojian Bai

    (Neutron Scattering Division)

  • Erxi Feng

    (Neutron Scattering Division)

  • Admasu Solomon Alemayehu

    (Rutgers Center for Emergent Materials and Department of Physics and Astronomy)

  • Jaewook Kim

    (Rutgers Center for Emergent Materials and Department of Physics and Astronomy)

  • Fei-Ting Huang

    (Rutgers Center for Emergent Materials and Department of Physics and Astronomy)

  • Qiang Zhang

    (Neutron Scattering Division)

  • Xiaxin Ding

    (Los Alamos National Laboratory)

  • Neil Harrison

    (Los Alamos National Laboratory)

  • Vivien Zapf

    (Los Alamos National Laboratory)

  • Daniel Khomskii

    (Universität zu Köln)

  • Igor I. Mazin

    (George Mason University)

  • Sang-Wook Cheong

    (Rutgers Center for Emergent Materials and Department of Physics and Astronomy)

  • Huibo Cao

    (Neutron Scattering Division)

Abstract

Ferrotoroidal order, which represents a spontaneous arrangement of toroidal moments, has recently been found in a few linear magnetoelectric materials. However, tuning toroidal moments in these materials is challenging. Here, we report switching between ferritoroidal and ferrotoroidal phases by a small magnetic field, in a chiral triangular-lattice magnet BaCoSiO4 with tri-spin vortices. Upon applying a magnetic field, we observe multi-stair metamagnetic transitions, characterized by equidistant steps in the net magnetic and toroidal moments. This highly unusual ferri-ferroic order appears to come as a result of an unusual hierarchy of frustrated isotropic exchange couplings revealed by first principle calculations, and the antisymmetric exchange interactions driven by the structural chirality. In contrast to the previously known toroidal materials identified via a linear magnetoelectric effect, BaCoSiO4 is a qualitatively new multiferroic with an unusual coupling between several different orders, and opens up new avenues for realizing easily tunable toroidal orders.

Suggested Citation

  • Lei Ding & Xianghan Xu & Harald O. Jeschke & Xiaojian Bai & Erxi Feng & Admasu Solomon Alemayehu & Jaewook Kim & Fei-Ting Huang & Qiang Zhang & Xiaxin Ding & Neil Harrison & Vivien Zapf & Daniel Khoms, 2021. "Field-tunable toroidal moment in a chiral-lattice magnet," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25657-6
    DOI: 10.1038/s41467-021-25657-6
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    Cited by:

    1. Xianghan Xu & Yiqing Hao & Shiyu Peng & Qiang Zhang & Danrui Ni & Chen Yang & Xi Dai & Huibo Cao & R. J. Cava, 2023. "Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Shijie Xu & Bingqian Dai & Yuhao Jiang & Danrong Xiong & Houyi Cheng & Lixuan Tai & Meng Tang & Yadong Sun & Yu He & Baolin Yang & Yong Peng & Kang L. Wang & Weisheng Zhao, 2024. "Universal scaling law for chiral antiferromagnetism," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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