Evidence for anisotropic kondo behavior in Ce0.8La0.2Al3
We have performed an inelastic neutron scattering study of the low energy spin dynamics of the heavy fermion compound Ce0.8La0.2Al3 as a function of temperature and external pressure up to 5 kbar. At temperatures below 3 K, the magnetic response transforms from a quasielastic form, common to many heavy fermion systems, to a single well-defined inelastic peak, which is extremely sensitive to external pressure. The scaling of the spin dynamics and the thermodynamic properties are in agreement with the predictions of the anisotropic Kondo model.
Goremychkin
EA
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
Osborn
R
Rainford
BD
Murani
AP