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)

Vol. 38 10 107402

Framtidens 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

Mer information

Senast uppdaterat

2021-11-25