Superconductivity in kagome metal ThRu3Si2
Fuente:
arXiv
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| Autores principales: | , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| author | Liu, Yi Li, Jing Yang, Wu-Zhang Lu, Jia-Yi Cao, Bo-Ya Li, Hua-Xun Chai, Wan-Li Wu, Si-Qi Li, Bai-Zhuo Sun, Yun-Lei Jiao, Wen-He Cao, Wang Xu, Xiao-Feng Zhi, Ren Cao, Guang-Han |
| author_facet | Liu, Yi Li, Jing Yang, Wu-Zhang Lu, Jia-Yi Cao, Bo-Ya Li, Hua-Xun Chai, Wan-Li Wu, Si-Qi Li, Bai-Zhuo Sun, Yun-Lei Jiao, Wen-He Cao, Wang Xu, Xiao-Feng Zhi, Ren Cao, Guang-Han |
| contents | We report the physical properties of ThRu$_3$Si$_2$ featured with distorted Ru kagome lattice. The combined experiments of resistivity, magnetization and specific heat reveal bulk superconductivity with $T_{\rm{c}}$ = 3.8 K. The specific heat jump and calculated electron-phonon coupling indicate a moderate coupled BCS superconductor. In comparison with LaRu$_3$Si$_2$, the calculated electronic structure in ThRu$_3$Si$_2$ shows an electron-doping effect with electron filling lifted from 100 meV below flat bands to 300 meV above it. This explains the lower superconducting transition temperature and weaker electron correlations observed in ThRu$_3$Si$_2$. Our work suggests the $T_{\rm{c}}$ and electronic correlations in kagome superconductor could have intimate connection with the flat bands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05227 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superconductivity in kagome metal ThRu3Si2 Liu, Yi Li, Jing Yang, Wu-Zhang Lu, Jia-Yi Cao, Bo-Ya Li, Hua-Xun Chai, Wan-Li Wu, Si-Qi Li, Bai-Zhuo Sun, Yun-Lei Jiao, Wen-He Cao, Wang Xu, Xiao-Feng Zhi, Ren Cao, Guang-Han Superconductivity We report the physical properties of ThRu$_3$Si$_2$ featured with distorted Ru kagome lattice. The combined experiments of resistivity, magnetization and specific heat reveal bulk superconductivity with $T_{\rm{c}}$ = 3.8 K. The specific heat jump and calculated electron-phonon coupling indicate a moderate coupled BCS superconductor. In comparison with LaRu$_3$Si$_2$, the calculated electronic structure in ThRu$_3$Si$_2$ shows an electron-doping effect with electron filling lifted from 100 meV below flat bands to 300 meV above it. This explains the lower superconducting transition temperature and weaker electron correlations observed in ThRu$_3$Si$_2$. Our work suggests the $T_{\rm{c}}$ and electronic correlations in kagome superconductor could have intimate connection with the flat bands. |
| title | Superconductivity in kagome metal ThRu3Si2 |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2403.05227 |