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The magnetic instability in the heavy fermion compounds Ce1−x La x Ru2Si2

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Abstract

The magnetization and the specific heat of Ce1−x La x Ru2Si2 with x≤0.13 are reported with special attention to the effect of magnetic field and the role of lanthanum doping. Evidence is given of differences between the undoped (x=0) and the solid solution (x≠0) cases. A common feature is the occurrence of well-defined anomalies in the magnetization at the “metamagnetic” fieldH M independently of whether the ground state is one of long-range order or Pauli paramagnetism. Forx=0, the ground state appears to be a Pauli paramagnet for any strength of the magnetic field; quantum fluctuations or deviations from an ideal lattice may prevent the occurrence of a true static magnetic transition.

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Author notes

  1. C. Marcenat & J. Flouquet

    Present address: S.B.T., Dept. Rech. Fond., C.E.N.G., B.P. 85X-38041, Grenoble-Codex, France

Authors and Affiliations

  1. Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California

    R. A. Fisher, C. Marcenat & N. E. Phillips

  2. Centre de Recherches sur les Trés Basses Températures, CNRS, Grenoble, France

    P. Haen, F. Lapierre, P. Lejay & J. Flouquet

  3. Laboratoire Louis Néel, CNRS, Grenoble, France

    J. Voiron

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Laboratoire associé à l'Université Joseph Fourier, Grenoble.

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Fisher, R.A., Marcenat, C., Phillips, N.E. et al. The magnetic instability in the heavy fermion compounds Ce1−x La x Ru2Si2 . J Low Temp Phys 84, 49–86 (1991). https://doi.org/10.1007/BF00681617

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