Crystal field states in CeCu4Al |
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| Authors: | T. Toliński A. Hoser S. Rols A. Kowalczyk A. Szlaferek |
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| Affiliation: | 1. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland;2. Helmholtz-Zentrum, Glienicker Straße 100, D-14109 Berlin, Germany;3. Institut Laue Langevin, 6 rue Jules Horowitz B.P. 156 F-38042, Grenoble Cedex 9, France;1. Institute of Metal Physics, Russian Academy of Sciences, Ural Branch, 620990 Yekaterinburg, Russia;2. Ural Federal University, 620002 Yekaterinburg, Russia;3. Department of Physics, Indian Institute of Technology Bombay, 400076 Mumbai, India;1. Institute of Chemistry, University of Silesia in Katowice, 40-007, Katowice, Poland;2. Institute of Physics, University of Silesia in Katowice, 40-007, Katowice, Poland;3. Institute of Materials Science, University of Silesia in Katowice, 40-007, Katowice, Poland;4. Faculty of Natural Sciences, Comenius University, 84215, Bratislava, Slovakia;1. Neutron Scattering and Magnetism, Laboratory for Solid State Physics, ETH Zürich, Rämistrasse 101, CH-8092 Zürich, Switzerland;2. Laboratoire de physique, CNRS UMR 5672, École normale supérieure de Lyon, Université de Lyon, 46, allée d?Italie, 69364 Lyon cedex 07, France;1. Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, 6 Boulevard du Marechal Juin, 14050 Caen Cedex, France;2. Analysis and Characterization Department, National Institute for R&D in Electrochemistry and Condensed Matter, Timisoara 30024, Romania |
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| Abstract: | Heavy fermion CeCu4Al compound has been studied by inelastic neutron diffraction (INS), heat capacity and magnetic susceptibility measurements. A single Crystal Electric Field (CEF) peak has been detected in the INS spectra, which may be explained by a quasi-quartet state suggested by the analysis of the Schottky anomaly contributing to the magnetic part of the specific heat. The Kondo interactions have been included in the analysis of the magnetic part employing the simplified resonance level model. The resulting Kondo temperature of about 5–10 K is somewhat larger than in the previous studies. The magnetic susceptibility confirms the CEF level scheme of the type 0–93 K and provides the values of the CEF parameters. |
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