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The 4f-Hybridization Strength in Ce_(m)M_(n)In_(3m+2n) Heavy-Fermion Compounds Studied by Angle-Resolved Photoemission Spectroscopy
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作者 Jiao-Jiao Song Yang Luo +18 位作者 Chen Zhang Qi-Yi Wu Tomasz Durakiewicz Yasmine Sassa Oscar Tjernberg Martin Mansson Magnus HBerntsen Yin-Zou Zhao Hao Liu Shuang-Xing Zhu Zi-Teng Liu Fan-Ying Wu Shu-Yu Liu Eric DBauer Ján Rusz peter moppeneer Ya-Hua Yuan Yu-Xia Duan Jian-Qiao Meng 《Chinese Physics Letters》 SCIE CAS CSCD 2021年第10期37-42,共6页
We systemically investigate the nature of Ce 4f electrons in structurally layered heavy-fermion compounds Ce_(m)M_(n)In_(3m+2n)(with M=Co,Rh,Ir,and Pt,m=1,2,n=0–2),at low temperature using on-resonance angle-resolved... We systemically investigate the nature of Ce 4f electrons in structurally layered heavy-fermion compounds Ce_(m)M_(n)In_(3m+2n)(with M=Co,Rh,Ir,and Pt,m=1,2,n=0–2),at low temperature using on-resonance angle-resolved photoemission spectroscopy.Three heavy quasiparticle bands f^(0),f^(1/7/2)and f^(1/5/2),are observed in all compounds,whereas their intensities and energy locations vary greatly with materials.The strong f0 states imply that the localized electron behavior dominates the Ce 4f states.The Ce 4f electrons are partially hybridized with the conduction electrons,making them have the dual nature of localization and itinerancy.Our quantitative comparison reveals that the f^(1/5/2)–f^(0)intensity ratio is more suitable to reflect the 4f-state hybridization strength. 展开更多
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