The 4f-Hybridization Strength in Ce_(m)M_(n)In_(3m+2n) Heavy-Fermion Compounds Studied by Angle-Resolved Photoemission Spectroscopy  

作　　者：Jiao-Jiao Song Yang Luo 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 宋姣姣;罗洋;章晨;吴旗仪;Tomasz Durakiewicz;Yasmine Sassa;Oscar Tjernberg;Martin Mansson;Magnus HBerntsen;赵尹陬;刘豪;朱双兴;刘子腾;邬钒颖;刘姝妤;Eric DBauer;Ján Rusz;Peter MOppeneer;袁亚华;段玉霞;孟建桥(School of Physics and Electronics,Central South University,Changsha 410083,China;Institute of Physics,Maria Curie Sklodowska University,20-031 Lublin,Poland;Department of Physics and Astronomy,Uppsala University,Box 516,S-75120 Uppsala,Sweden;Department of Physics,Chalmers University of Technology,41296 Goteborg,Sweden;Department of Applied Physics,KTH Royal Institute of Technology,Alba Nova,10691 Stockholm,Sweden;Condensed Matter and Magnet Science Group,Los Alamos National Laboratory,Los Alamos,New Mexico 87545,USA)

机构地区：[1]School of Physics and Electronics,Central South University,Changsha 410083,China [2]Institute of Physics,Maria Curie Sklodowska University,20-031 Lublin,Poland [3]Department of Physics and Astronomy,Uppsala University,Box 516,S-75120 Uppsala,Sweden [4]Department of Physics,Chalmers University of Technology,41296 Goteborg,Sweden [5]Department of Applied Physics,KTH Royal Institute of Technology,Alba Nova,10691 Stockholm,Sweden [6]Condensed Matter and Magnet Science Group,Los Alamos National Laboratory,Los Alamos,New Mexico 87545,USA

出　　处：《Chinese Physics Letters》2021年第10期37-42,共6页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 12074436 and 11574402);the Innovation-Driven Plan in Central South University (Grant No. 2016CXS032);support through the Swedish Research Council (VR) and the Swedish National Infrastructure for Computing (SNIC),for computing time on computer cluster Triolith at the NSC center Link?ping (supported by VR Grant No. 2018-05973);the support from the Swedish Research Council (VR) through a Starting Grant (No. Dnr. 2017-05078);support from the Swedish Research Council(VR);the Knut and Alice Wallenberg foundation;supported by a Marie Sklodowska-Curie Action,International Career Grant through the European Commission and Swedish Research Council (VR)(Grant No. INCA-2014-6426);a VR neutron project (Grant No. BIFROST, Dnr. 2016-06955);granted by the Carl Tryggers Foundation for Scientific Research (Grant Nos. CTS-16:324 and CTS-17:325);the auspices of the U.S. Department of Energy,Office of Basic Energy Sciences,Division of Materials Sciences and Engineering

摘　　要：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.

关 键 词：SPECTROSCOPY materials STRENGTH 

分 类 号：O511.3[一般工业技术—材料科学与工程]