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Crystal-field excitations in the heavy-fermion alloys CeCu6−x Au x studied by specific heat and inelastic neutron scattering

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Abstract

The specific heat of CeCu6−x Au x withx=0,0.3, and 0.9, and of the corresponding La homologues has been measured between 1.5 K and 150 K. With increasingx we find progressively better-defined Schottky anomalies arising from the crystal-field splitting, which is attributed to the decrease of the Kondo temperature. Both observations are in line with the results of inelastic neutron-scattering data performed on samples withx=0.5. Overall, the crystal-field splitting does not change very much upon alloying with Au. A detailed analysis shows that forx=0.5 the quasielastic line width is smaller and the inelastic crystal-field transitions are better resolved compared to CeCu6.

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Stroka, B., Schröder, A., Trappmann, T. et al. Crystal-field excitations in the heavy-fermion alloys CeCu6−x Au x studied by specific heat and inelastic neutron scattering. Z. Physik B - Condensed Matter 90, 155–160 (1993). https://doi.org/10.1007/BF02198148

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Keywords

  • Spectroscopy
  • Neural Network
  • State Physics
  • Detailed Analysis
  • Complex System