The 4f-Hybridization Strength in CemMnIn3m+2n Heavy-Fermion Compounds Studied by Angle-Resolved Photoemission Spectroscopy
Artikel i vetenskaplig tidskrift, 2021
We systemically investigate the nature of Ce 4f electrons in structurally layered heavy-fermion compounds CemMnIn3m+2n (with M = Co, Rh, Jr, 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(7/2)(1) and f(5/2)(1), are observed in all compounds, whereas their intensities and energy locations vary greatly with materials. The strong f(0) 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(5/2)(1)-f (0) intensity ratio is more suitable to reflect the 4f-state hybridization strength.
Författare
Jiao-Jiao Song
Central South University
Yang Luo
Central South University
Chen Zhang
Central South University
Qi-Yi Wu
Central South University
Tomasz Durakiewicz
Maria Curie-Sklodowska University
Yasmine Sassa
Uppsala universitet
Chalmers, Fysik, Materialfysik
Oscar Tjernberg
Alba Nova Universitetscentrum
Martin Mansson
Alba Nova Universitetscentrum
Magnus H. Berntsen
Alba Nova Universitetscentrum
Yin-Zou Zhao
Central South University
Hao Liu
Central South University
Shuang-Xing Zhu
Central South University
Zi-Teng Liu
Central South University
Fan-Ying Wu
Central South University
Shu-Yu Liu
Central South University
Eric D. Bauer
Los Alamos National Laboratory
Jan Rusz
Uppsala universitet
Peter M. Oppeneer
Uppsala universitet
Ya-Hua Yuan
Central South University
Yu-Xia Duan
Central South University
Jian-Qiao Meng
Central South University
Chinese Physics Letters
0256-307X (ISSN) 1741-3540 (eISSN)
Vol. 38 10 107402Framtidens Lågdimensionella Skyrmion Material
Vetenskapsrådet (VR) (2017-05078), 2019-06-01 -- 2021-12-31.
Ämneskategorier
Oorganisk kemi
Atom- och molekylfysik och optik
Den kondenserade materiens fysik
DOI
10.1088/0256-307X/38/10/107402