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<p>Kagome metals host a variety of correlated electronic states, yet the nature of their intertwined orders remains an open question. The recently discovered Cr-based kagome compound CsCr<sub>3</sub>Sb<sub>5</sub> differs from its V-based analogue CsV<sub>3</sub>Sb<sub>5</sub> by exhibiting stronger correlations and a magnetic ground state. While multiple broken symmetries have been reported in CsV<sub>3</sub>Sb<sub>5</sub>, only a single transition at <i>T</i><sup>*</sup>&#xa0;≈&#xa0;55 K has been identified at ambient pressure in CsCr<sub>3</sub>Sb<sub>5</sub>, with its origin unresolved. Here we uncover an additional phase transition above <i>T</i><sup>*</sup> through elastoresistivity measurements. Rotational symmetry breaking without divergent nematic susceptibility is identified around <i>T</i>&#xa0;≈&#xa0;64 K, which is most consistently explained as the emergence of charge-density-wave order. Laser-based photoemission-electron microscopy further reveals three-domain structures associated with spin-density-wave order below <i>T</i><sup>*</sup>. These findings indicate distinct charge and spin order transitions in CsCr<sub>3</sub>Sb<sub>5</sub>, offering crucial insight into the intertwined orders and pressure-induced superconductivity in this system.</p>

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Charge-spin dichotomy in the kagome metal CsCr3Sb5

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月17日

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  • Asato Onishi,
  • Yoichi Kageyama,
  • Cédric Bareille,
  • Sogen Ikegami,
  • Zifan Xu,
  • Kota Ishihara,
  • Hirokazu Fujiwara,
  • Zehao Wang,
  • Bin Gao,
  • Weiliang Yao,
  • Pengcheng Dai,
  • Youichi Yamakawa,
  • Hiroshi Kontani,
  • Toshiyuki Taniuchi,
  • Kenichiro Hashimoto,
  • Takasada Shibauchi

摘要

Kagome metals host a variety of correlated electronic states, yet the nature of their intertwined orders remains an open question. The recently discovered Cr-based kagome compound CsCr3Sb5 differs from its V-based analogue CsV3Sb5 by exhibiting stronger correlations and a magnetic ground state. While multiple broken symmetries have been reported in CsV3Sb5, only a single transition at T* ≈ 55 K has been identified at ambient pressure in CsCr3Sb5, with its origin unresolved. Here we uncover an additional phase transition above T* through elastoresistivity measurements. Rotational symmetry breaking without divergent nematic susceptibility is identified around T ≈ 64 K, which is most consistently explained as the emergence of charge-density-wave order. Laser-based photoemission-electron microscopy further reveals three-domain structures associated with spin-density-wave order below T*. These findings indicate distinct charge and spin order transitions in CsCr3Sb5, offering crucial insight into the intertwined orders and pressure-induced superconductivity in this system.