In:
Chinese Physics Letters, IOP Publishing, Vol. 38, No. 10 ( 2021-11-01), p. 107402-
Abstract:
We systemically investigate the nature of Ce 4 f electrons in structurally layered heavy-fermion compounds Ce m M n In 3 m + 2 n (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 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 4 f states. The Ce 4 f 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 4 f -state hybridization strength.
Type of Medium:
Online Resource
ISSN:
0256-307X
,
1741-3540
DOI:
10.1088/0256-307X/38/10/107402
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
2040565-0
SSG:
6,25
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