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<p>Transport of spin angular momentum over large distance has been a long sought-after goal in the field of spintronics. While the majority of the research effort has been devoted to the spin transport properties of magnetically ordered materials, spin transport in magnetically frustrated materials has received little attention. Here, we report an anomalous state in frustrated hyperkagome magnetic insulator Gd<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub>, where spin angular momenta can be transported over a long distance of 480μm, far exceeding the transport distance of any diffusive spin current in magnetically ordered materials, to the best of our knowledge. Monte Carlo simulations reveal significant spin fluctuations, spin-spin correlations and an absence of conventional magnons in such anomalous state; while the response of the anomalous state to perturbation is found to be akin to an overdamped forced oscillator. We find close relation of such state to the correlated “director” state in the material. Our result provides an effective electrical technique to characterize spin-spin correlations and frustrations; it also unveils the potential of frustrated magnets as powerful channel materials for spin transport.</p>

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Long-distance spin transport in frustrated hyperkagome magnet Gd3Ga5O12

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月7日

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  • Di Chen,
  • Bingcheng Luo,
  • Lei Xu,
  • Zian Xia,
  • Linhao Jia,
  • Shaomian Qi,
  • Congkuan Tian,
  • Kangyao Chen,
  • Hang Cui,
  • Guangyi Chen,
  • Shili Yan,
  • Miaoling Huang,
  • Jian Cui,
  • Ya Feng,
  • Zhentao Wang,
  • Jiang Xiao,
  • Jianhua Zhang,
  • Ryuichi Shindou,
  • X. C. Xie,
  • Jian-Hao Chen

摘要

Transport of spin angular momentum over large distance has been a long sought-after goal in the field of spintronics. While the majority of the research effort has been devoted to the spin transport properties of magnetically ordered materials, spin transport in magnetically frustrated materials has received little attention. Here, we report an anomalous state in frustrated hyperkagome magnetic insulator Gd3Ga5O12, where spin angular momenta can be transported over a long distance of 480μm, far exceeding the transport distance of any diffusive spin current in magnetically ordered materials, to the best of our knowledge. Monte Carlo simulations reveal significant spin fluctuations, spin-spin correlations and an absence of conventional magnons in such anomalous state; while the response of the anomalous state to perturbation is found to be akin to an overdamped forced oscillator. We find close relation of such state to the correlated “director” state in the material. Our result provides an effective electrical technique to characterize spin-spin correlations and frustrations; it also unveils the potential of frustrated magnets as powerful channel materials for spin transport.