Universität zu Köln

Sundermann, Martin, Marino, Andrea, Gloskovskii, Andrei, Yang, Chongli, Shimura, Yasuyuki, Takabatake, Toshiro ORCID: 0000-0002-3293-8592 and Severing, Andrea (2021). Quantitative investigation of the 4f occupation in the quasikagome Kondo lattice CeRh1-xPdxSn. Phys. Rev. B, 104 (23). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

CeRhSn with the Ce atoms forming a quasikagome lattice in the hexagonal plane has recently been discussed in the context of quantum criticality driven by magnetic frustration. Furthermore, it has been reported that the successive substitution of Rh by Pd leads to magnetic order. Here we have investigated the change of the 4 f occupation in the substitution series CeRh1-xPdxSn for for x = 0, 0.1, 0.3, 0.5, 0.75 by means of photoelectron spectroscopy with hard x rays (HAXPES). The quantitative analysis of the core level spectra with a combined full multiplet and configuration interaction analysis shows a smooth decrease of the 4 f 0 contribution with rising x due to an increase of the effective 4f binding energy epsilon(4f) and the reduction of the effective hybridization V-eff. We further compare valence band data with the calculated partial density of states and find that the Pd 4d states are about 1 eV further away from the Ce 4 f states at the Fermi energy than the Rh 4d states. In fact, the effective binding energy epsilon(4f) of the 4 f states in the configuration interaction analysis of the core level spectra decreases by the same amount.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sundermann, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Marino, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Gloskovskii, Andrei UNSPECIFIED UNSPECIFIED UNSPECIFIED Yang, Chongli UNSPECIFIED UNSPECIFIED UNSPECIFIED Shimura, Yasuyuki UNSPECIFIED UNSPECIFIED UNSPECIFIED Takabatake, Toshiro UNSPECIFIED orcid.org/0000-0002-3293-8592 UNSPECIFIED Severing, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-591248
DOI:	10.1103/PhysRevB.104.235150
Journal or Publication Title:	Phys. Rev. B
Volume:	104
Number:	23
Date:	2021
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTRONIC-STRUCTURE; PHOTOEMISSION; CERIUM; CE; PARAMETERS; RESONANCE; VALENCE; STATES; MODEL Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59124