We report the detailed physical properties of YRu_(3)Si_(2)with the Ru kagome lattice at normal and superconducting states.The results of resistivity and magnetization show that YRu_(3)Si_(2)is a type-II bulk supercon...We report the detailed physical properties of YRu_(3)Si_(2)with the Ru kagome lattice at normal and superconducting states.The results of resistivity and magnetization show that YRu_(3)Si_(2)is a type-II bulk superconductor with T_(c)~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.展开更多
基金supported by the National Key R&D Program of China(Grant No.2018YFE0202600)the Beijing Natural Science Foundation(Grant No.Z200005)+1 种基金the Fundamental Research Funds for the Central Universities and Research Funds of Renmin University of China(RUC)(Grant Nos.18XNLG14,19XNLG13,19XNLG17,and 22XNKJ40)the Beijing National Laboratory for Condensed Matter Physics。
文摘We report the detailed physical properties of YRu_(3)Si_(2)with the Ru kagome lattice at normal and superconducting states.The results of resistivity and magnetization show that YRu_(3)Si_(2)is a type-II bulk superconductor with T_(c)~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.
