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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.16412 |
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| _version_ | 1866914434763456512 |
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| author | Xiao, Yusen Duan, Qingchen Jia, Tao Cui, Yajing Liu, Shaohua Wen, Zhiwei Ji, Liangwen Zhong, Ruidan Chen, Yongliang Zhao, Yong |
| author_facet | Xiao, Yusen Duan, Qingchen Jia, Tao Cui, Yajing Liu, Shaohua Wen, Zhiwei Ji, Liangwen Zhong, Ruidan Chen, Yongliang Zhao, Yong |
| contents | We report a comprehensive investigation of the physical properties of LuOs3B2, characterized by an ideal Os-based kagome lattice. Resistivity and magnetization measurements confirm the emergence of type-II bulk superconductivity with a critical temperature Tc=4.63 K. The specific heat jump and the calculated electron-phonon coupling parameter support a moderately coupled superconducting state. Electron correlation effects are supported by the enhanced Wilson ratios. First-principles calculations reveal hallmark features of kagome band structure, including Dirac points, van Hove singularities, and quasi-flat bands, primarily derived from the Os d orbitals. The inclusion of spin-orbit coupling opens a gap at the Dirac points, significantly altering the electronic properties. Furthermore, the superconductivity and electronic properties of isomorphic compounds are discussed. This work provides a thorough exploration of the superconducting and normal states of LuOs3B2, deepening the understanding of kagome superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_16412 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superconductivity and Electron Correlations in Kagome Metal LuOs3B2 Xiao, Yusen Duan, Qingchen Jia, Tao Cui, Yajing Liu, Shaohua Wen, Zhiwei Ji, Liangwen Zhong, Ruidan Chen, Yongliang Zhao, Yong Superconductivity We report a comprehensive investigation of the physical properties of LuOs3B2, characterized by an ideal Os-based kagome lattice. Resistivity and magnetization measurements confirm the emergence of type-II bulk superconductivity with a critical temperature Tc=4.63 K. The specific heat jump and the calculated electron-phonon coupling parameter support a moderately coupled superconducting state. Electron correlation effects are supported by the enhanced Wilson ratios. First-principles calculations reveal hallmark features of kagome band structure, including Dirac points, van Hove singularities, and quasi-flat bands, primarily derived from the Os d orbitals. The inclusion of spin-orbit coupling opens a gap at the Dirac points, significantly altering the electronic properties. Furthermore, the superconductivity and electronic properties of isomorphic compounds are discussed. This work provides a thorough exploration of the superconducting and normal states of LuOs3B2, deepening the understanding of kagome superconductors. |
| title | Superconductivity and Electron Correlations in Kagome Metal LuOs3B2 |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2504.16412 |