Field-tunable toroidal moment in a chiral-lattice magnet

@article{Ding2021FieldtunableTM,
  title={Field-tunable toroidal moment in a chiral-lattice magnet},
  author={Lei Ding and Xianghan Xu and Harald O. Jeschke and Xiaojian Bai and Erxi Feng and Admasu Solomon Alemayehu and Jaewook Kim and Fei-ting Huang and Qiang Zhang and Xiaxin Ding and Neil Harrison and Vivien S. Zapf and Daniel I. Khomskii and Igor I. Mazin and Sang‐Wook Cheong and Huibo Cao},
  journal={Nature Communications},
  year={2021},
  volume={12}
}
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… 
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