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Dynamics of the magnetization in the heavy fermion system CeCu6

  • Author(s): Walter, U;
  • Wohlleben, D;
  • Fisk, Z
  • et al.
Abstract

We have studied CeCu6 by inelastic neutron scattering. We found both quasielastic and also inelastic transitions, which we interpret as residual crystal field transitions. The quasielastic linewidth is a strongly nonlinear function of temperature, with approximately ΓQE=5.0 meV at 300 K, with a crossover ΓQE=kT at about 13 K and with a residual value of ΓQE=(0)=0.50 meV for T=0 K. Below 5 K the quasielastic intensity IQE decreases linearly with temperature. χstαIQE/T is in good agreement with direct measurements of the static susceptibility. The data are fully consistent with a nonordering groundstate of CeCu6. © 1986 Springer-Verlag.

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