Crystal-field effects in the mixed-valence compounds Yb2M3Ga9 (M= Rh, Ir)
N. O. Moreno, A. Lobos, A. A. Aligia, E. D. Bauer, S. Bobev, V., Fritsch, J. L. Sarrao, P. G. Pagliuso, J. D. Thompson, C. D. Batista, and Z., Fisk
TL;DR
This study investigates the anisotropic magnetic, thermal, and electrical properties of Yb2M3Ga9 (M= Rh, Ir) compounds, highlighting the interplay of crystalline electric field and Kondo effects through experimental measurements and theoretical modeling.
Contribution
It provides the first detailed analysis of CEF and Kondo interplay in these mixed-valence compounds using experimental data and the Anderson impurity model.
Findings
Large anisotropy in magnetic susceptibility observed
Temperature dependence modeled with Anderson impurity model including CEF
Insights into the interplay between CEF and Kondo effects
Abstract
Magnetic susceptibility, heat capacity, and electrical resistivity measurements have been carried out on single crystals of the intermediate valence compounds Yb2Rh3Ga9 and Yb2Ir3Ga9. These measurements reveal a large anisotropy due apparently to an interplay between crystalline electric field (CEF) and Kondo effects. The temperature dependence of magnetic susceptibility can be modelled using the Anderson impurity model including CEF within an approach based on the Non-Crossing Approximation.
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