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CDW induced structural symmetry breaking in Kagome metal FeGe

ORAL

Abstract

Charge-ordered phases in kagome metals have garnered much recent attention owing to their highly interesting properties. Recently, CDW order within the antiferromagnetic (AFM) ordered phase of the kagome metal FeGe has attracted attention [1-4]. Here, we further investigate this compound using high-resolution dilatometry techniques. Our results suggest a symmetry breaking of the hexagonal in-plane structure at the onset of the CDW transition. Detailed heat-capacity measurements find a clear anomaly at the spin-canting phenomenon [2] slightly below the CDW transition. These results offers us an opportunity to further explore the charge order in this FeGe kagome metallic system.


[1] T. Neupertet,et al. Nat. Phys. 18, 137–143 (2022)

[2] X. Tenget et al. . Nature 609, 490–495 (2022)

[3] J.-X. Yin, et al. Phys. Rev. Lett. 129, 166401 (2022)

[4] C. Setty, et al. arXiv:2203.01930

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Presenters

  • Liran Wang

    Karlsruhe Institute of Technology, IQMT, Karlsruhe Institute of Technology, Germany

Authors

  • Liran Wang

    Karlsruhe Institute of Technology, IQMT, Karlsruhe Institute of Technology, Germany

  • Frederic Hardy

    IQMT, Karlsruhe Institute of Technology, Germany, Karlsruhe Institute of Technology

  • Christoph Meingast

    IQMT, Karlsruhe Institute of Technology, Germany, Karlsruhe Institute of Technology

  • Xueliang Wu

    College of Physics & Center of Quantum Materials and Devices, Chongqing University, People's Republic of China

  • Mingquan He

    College of Physics & Center of Quantum Materials and Devices, Chongqing University, People's Republic of China, Low Temperature Physics Laboratory, Chongqing University

  • Yisheng Chai

    Chongqing University, College of Physics & Center of Quantum Materials and Devices, Chongqing University, People's Republic of China

  • Aifeng Wang

    College of Physics & Center of Quantum Materials and Devices, Chongqing University, People's Republic of China