Zeitschrift für Physik B Condensed Matter

, Volume 90, Issue 2, pp 155–160 | Cite as

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

  • B. Stroka
  • A. Schröder
  • T. Trappmann
  • H. v. Löhneysen
  • M. Loewenhaupt
  • A. Severing
Original Contributions


The specific heat of CeCu6−xAu 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.


Spectroscopy Neural Network State Physics Detailed Analysis Complex System 
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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • B. Stroka
    • 1
  • A. Schröder
    • 1
  • T. Trappmann
    • 1
  • H. v. Löhneysen
    • 1
  • M. Loewenhaupt
    • 2
  • A. Severing
    • 3
  1. 1.Physikalisches InstitutUniversität KarlsruheKarlsruheFederal Republic of Germany
  2. 2.Institut für FestkörperforschungForschungszentrum JülichJülichFederal Republic of Germany
  3. 3.Institut Laue-LangevinGrenobleFrance

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