Superconductivity in kagome metal YRu3Si2 with strong electron correlations

Chunsheng Gong; Shangjie Tian; Zhijun Tu; Qiangwei Yin; Yang Fu; Ruitao Luo; Hechang Lei

doi:10.1088/0256-307X/39/8/087401

Superconductivity in kagome metal YRu3Si2 with strong electron correlations

Superconductivity 2025-10-14 v2 Strongly Correlated Electrons

Authors: Chunsheng Gong , Shangjie Tian , Zhijun Tu , Qiangwei Yin , Yang Fu , Ruitao Luo , Hechang Lei

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Abstract

We report the detailed physical properties of YRu3Si2 with the Ru kagome lattice at normal and superconducting states. The results of resistivity and magnetization show that YRu3Si2 is a type-II bulk superconductor with Tc ~ 3.0 K. The specific heat measurement further suggests that this superconductivity could originate from the weak or moderate electron-phonon coupling. On the other hand, both large Kadawaki-Woods ratio and Wilson ratio indicate that there is a strong electron correlation effect in this system, which may have a connection with the featured flat band of kagome lattice.

Keywords

kagome metal superconductivity strong electron correlation yru3si2 type-ii superconductor flat band

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@article{arxiv.2109.11478,
  title  = {Superconductivity in kagome metal YRu3Si2 with strong electron correlations},
  author = {Chunsheng Gong and Shangjie Tian and Zhijun Tu and Qiangwei Yin and Yang Fu and Ruitao Luo and Hechang Lei},
  journal= {arXiv preprint arXiv:2109.11478},
  year   = {2025}
}

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6 pages, 5 figures, 1 table

Superconductivity in kagome metal YRu3Si2 with strong electron correlations

Abstract

Keywords

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