Interpretation of experimental results on Kondo systems with crystal field

@article{Romero2013InterpretationOE,
  title={Interpretation of experimental results on Kondo systems with crystal field},
  author={M. A. Romero and A. A. Aligia and Julian Sereni and G. Nieva},
  journal={Journal of Physics: Condensed Matter},
  year={2013},
  volume={26}
}
We present a simple approach to calculate the thermodynamic properties of single Kondo impurities including orbital degeneracy and crystal field effects (CFE) by extending a previous proposal by Schotte and Schotte (1975 Phys. Lett. 55A 38). Comparison with exact solutions for the specific heat of a quartet ground state split into two doublets shows deviations below 10% in the absence of CFE and a quantitative agreement for moderate or large CFE. As an application, we fit the measured specific… 
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