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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

Abstract

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.

Keywords

Spectroscopy Neural Network State Physics Detailed Analysis Complex System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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