超导电性
金属
材料科学
凝聚态物理
物理
结晶学
化学
冶金
作者
Yi Liu,Jing Li,Wuzhang Yang,Jia-Yi Lu,Bo-Ya Cao,Hua-Xun Li,W. P. Chai,Siqi Wu,Bai-Zhuo Li,Yun‐Lei Sun,Wen‐He Jiao,Cao Wang,Xiaofeng Xu,Zhi Ren,Guang‐Han Cao
出处
期刊:Chinese Physics B
[IOP Publishing]
日期:2024-01-09
卷期号:33 (5): 057401-057401
被引量:1
标识
DOI:10.1088/1674-1056/ad1c5e
摘要
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 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 c and electronic correlations in the kagome superconductor could have an intimate connection with the flat bands.
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