Experimental observation of the significant difference between surface and bulk Kondo processes in Kondo lattice YbCu2Si2

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外文摘要：Synchrotron-based angle-resolved photoemission spectroscopy was employed to investigate the temperature evolution of the Yb 4f spectral for surface and bulk in the Kondo lattice YbCu2Si2.Our study quantitatively distinguishes between the surface and bulk hybridization processes,revealing that the onset temperatures for both surface and bulk hybridization processes are signif-icantly higher than the Kondo temperature.Additionally,we found that the effective surface Kondo temperature is much lower than that of the bulk.These findings offer valuable insights into the understanding of heavy fermion physics.

外文关键词：

Kondo latticeangle-resolved photoemission spectroscopyelectronic structurehybridizationsurface state

作者：

Yin-Zou Zhao、Jiao-Jiao Song、Qi-Yi Wu、Hao Liu、Chen Zhang、Bo Chen、Hong-Yi Zhang、Zhen-Hua Chen、Yao-Bo Huang、Xue-Qing Ye、Ya-Hua Yuan、Yu-Xia Duan、Jun He、Jian-Qiao Meng

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作者单位：

School of Physics,Central South University,Changsha 410083,China

Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China

基金：

国家自然科学基金国家重点研发计划Science and Technology Innovation Program of Hunan ProvinceHigh Performance Computing Center of Central South University

项目编号：

120744362022YFA16042042022RC3068

出版年：

2024

DOI：

10.1007/s11433-023-2318-y

中国科学:物理学力学天文学(英文版)

中国科学院

中国科学:物理学力学天文学(英文版)

CSTPCD

影响因子：0.91

ISSN：1674-7348

年,卷(期)：2024.67(4)

参考文献量45

Experimental observation of the significant difference between surface and bulk Kondo processes in Kondo lattice YbCu2Si2

中国科学:物理学 力学 天文学(英文版)

中国科学:物理学力学天文学(英文版)