CeCo_1-xFe_xGe₃ -- crystal electric field effects and fine tuning around critical substitution

2020/03/29 by P. Skokowski, Skokowski, P., K. Synoradzki +11
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.2003.13056

11 pages, 5 figures

arxiv created 2020/03/29 · arxiv updated 2020/03/31

Abstract

In this article we present some particularly important issues regarding the CeCo_1-xFe_xGe₃ alloys. Firstly, the electrical resistivity below 2 K, down to 500 mK is studied to confirm the non-Fermi-liquid behavior around the critical substitution range x~0.65. Secondly, the scheme of the crystal electric field (CEF) levels has been investigated employing methods like inelastic neutron scattering, specific heat, and magnetic susceptibility. It aims to clarify different reports on the parent CeCoGe₃ compound and to provide first data concerning CEF in the entire CeCo_1-xFe_xGe₃ series. Third, the effect of hydrogenation, especially around the quantum critical point (QCP) (x~0.65) is verified.

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