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Thermodynamic and transport properties of CeCu6

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Abstract

Measurements of the specific heat, magnetization, and transport properties (resistivity, thermoelectric power, and thermal conductivity) of single-crystal CeCu6 are reported with special emphasis on the effect of magnetic field. The relative field variations of the differential susceptibility, the coefficients of the linear temperature term of the specific heat, and theT 2 resistivity term are presented. They are directly related to the field curvature of the magnetization, indicating the itinerant nature of thef electrons. The Wilson ratio reaches a maximum atH=H*, which may correspond to a crossover from a low-field phase in which antiferromagnetic correlations dominate, to a highly polarized phase. Intersite coupling seems to play an important role in heavy-fermion compounds. Another interesting result is the occurrence of residual positive magnetoresistivity, which also appears to be a general feature of heavy-fermion compounds. The properties of CeCu6 are compared to those of otherf instability compounds and to present theories.

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Authors and Affiliations

  1. Département de Physique de la Matière Condensée, Université de Genève, Geneva, Switzerland

    A. Amato & D. Jaccard

  2. CRTBT-CNRS, Grenoble, France

    J. Flouquet, F. Lapierre & J. L. Tholence

  3. Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California

    R. A. Fisher, S. E. Lacy, J. A. Olsen & N. E. Phillips

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  1. A. Amato
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  2. D. Jaccard
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  3. J. Flouquet
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Amato, A., Jaccard, D., Flouquet, J. et al. Thermodynamic and transport properties of CeCu6 . J Low Temp Phys 68, 371–397 (1987). https://doi.org/10.1007/BF00682303

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