Crystal electric field splitting and f -electron hybridization in heavy-fermion CePt2In7
Journal article, 2019
We use high-resolution angle-resolved photoemission spectroscopy to investigate the electronic structure of the antiferromagnetic heavy fermion compound CePt2In7, which is a member of the CeIn3-derived heavy fermion material family. Weak hybridization among 4f electron states and conduction bands was identified in CePt2In7 at low temperature much weaker than that in the other heavy fermion compounds like CeIrIn5 and CeRhIn5. The Ce 4f spectrum shows fine structures near the Fermi energy, reflecting the crystal electric field splitting of the 4f5/21 and 4f7/21 states. Also, we find that the Fermi surface has a strongly three-dimensional topology, in agreement with density-functional theory calculations.
© 2019 American Physical Society.
Author
Yu Xia Duan
Central South University
Cheng Zhang
Central South University
Ján Rusz
Uppsala University
Peter M. Oppeneer
Uppsala University
Tomasz Durakiewicz
Maria Curie-Sklodowska University
Yasmine Sassa
Uppsala University
Chalmers, Physics, Materials Physics
Oscar Tjernberg
Royal Institute of Technology (KTH)
Martin Månsson
Royal Institute of Technology (KTH)
Magnus H. Berntsen
Royal Institute of Technology (KTH)
Fan Ying Wu
Central South University
Yin Zou Zhao
Central South University
Jiao Jiao Song
Central South University
Qi Yi Wu
Central South University
Yang Luo
Central South University
Eric D. Bauer
Los Alamos National Laboratory
J. D. Thompson
Los Alamos National Laboratory
Jian-Qiao Meng
Central South University
Hunan Normal University
Published in
Physical Review B
24699950 (ISSN) 24699969 (eISSN)
Vol. 100 Issue 8 art. no 085141Categorizing
Subject Categories (SSIF 2011)
Inorganic Chemistry
Atom and Molecular Physics and Optics
Condensed Matter Physics
Identifiers
DOI
10.1103/PhysRevB.100.085141