Universität zu Köln

Chen, K., Strigari, F., Sundermann, M., Agrestini, S., Ghimire, N. J., Lin, S. -Z., Batista, C. D., Bauer, E. D., Thompson, J. D., Otero, E., Tanaka, A. and Severing, A. (2016). Exchange field effect in the crystal-field ground state of CeMAl4Si2. Phys. Rev. B, 94 (11). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

The crystal-field ground-state wave functions of the tetragonal, magnetically ordering Kondo lattice materials CeMAl4Si2 (M = Rh, Ir, and Pt) are determined with low-temperature linearly polarized soft-x-ray absorption spectroscopy, and estimates for the crystal-field splittings are given from the temperature evolution of the linear dichroism. Values for the dominant exchange field in the magnetically ordered phases can be obtained from fitting the influence of magnetic order on the linear dichroism. The direction of the required exchange field is vertical bar vertical bar c for the antiferromagnetic Rh and Ir compounds, with the corresponding strength of the order of lambda(ex) approximate to 6 meV (65 K). Furthermore, the presence of Kondo screening in the Rh and Ir compound is demonstrated on the basis of the absorption due to f(0) in the initial

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Chen, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Strigari, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sundermann, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Agrestini, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ghimire, N. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lin, S. -Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Batista, C. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, E. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thompson, J. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Otero, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tanaka, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Severing, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-262577
DOI:	10.1103/PhysRevB.94.115111
Journal or Publication Title:	Phys. Rev. B
Volume:	94
Number:	11
Date:	2016
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 SUPERCONDUCTIVITY Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26257