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Crystal field studies on the heavy fermion compound CeNi₈CuGe₄

Peyker, L. ; Gold, C. ; Scheidt, E.-W. ; Michor, H. ; Unruh, T. ; Senyshyn, A. ; Stockert, O. ; Scherer, W. (2024)
Crystal field studies on the heavy fermion compound CeNi₈CuGe₄.
In: Journal of Physics: Conference Series, 2010, 200 (1)
doi: 10.26083/tuprints-00020649
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Item Type: Article
Type of entry: Secondary publication
Title: Crystal field studies on the heavy fermion compound CeNi₈CuGe₄
Language: English
Date: 12 February 2024
Place of Publication: Darmstadt
Year of primary publication: 1 January 2010
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Journal of Physics: Conference Series
Volume of the journal: 200
Issue Number: 1
Collation: 4 Seiten
DOI: 10.26083/tuprints-00020649
Corresponding Links:
Origin: Secondary publication DeepGreen

Substitution of nickel by copper in the heavy fermion system CeNi₉₋ₓCuₓGe₄ alters the local crystal field environment of the Ce³⁺-ions. This leads to a quantum phase transition near x ≈ 0.4, which is not only driven by the competition between Kondo effect and RKKY interaction, but also by a reduction of an effectively fourfold to a twofold degenerate crystal field ground state. To study the consequences of a changing crystal field in CeNi₈CuGe₄ on its Kondo properties, inelastic neutron scattering (INS) experiments were performed. Two well-defined crystal field transitions were observed in the energy-loss spectra at 4K. The crystal field level scheme determined by neutron spectroscopy is compared with results from specific heat measurements.

Identification Number: Artikel-ID: 012160
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-206491
Additional Information:

International Conference on Magnetism (ICM 2009)

Classification DDC: 500 Science and mathematics > 500 Science
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Structure Research
Date Deposited: 12 Feb 2024 15:06
Last Modified: 12 Feb 2024 15:06
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20649
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