Heavy-fermion behavior and the single-ion Kondo model
- 23 March 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 58 (12), 1232-1235
- https://doi.org/10.1103/physrevlett.58.1232
Abstract
Measurements of the temperature and concentration dependence of the specific heat, magnetic susceptibility, and electrical resistivity for are presented. The data scale with the concentration of Ce ions over surprisingly large intervals of x and T. The low-temperature specific heat per Ce ion agrees quantitatively with that of an S=(1/2) Kondo impurity of apeq23.3 K. These results strongly suggest that intersite correlations do not play the expected important role and that the high specific heat γ reported for is mainly a manifestation of the single-ion Kondo resonance.
Keywords
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