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Absence of Kondo lattice coherence effects in Ce0.6La0.4Pb3: magnetic field study

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: R Pietri, C R Rotundu, B Andraka, B Daniels, and K Ingersent

Editorial: Journal of Applied Physics, 95, p.10A510, 2005.


The specific heat of polycrystalline Ce0.6La0.4Pb3 has been measured in magnetic fields ranging from 0 to 14 T. After subtraction of a lattice contribution, the specific heat between 1 K and 10 K is well described by the S=(1/2) single-impurity Kondo model with just one adjustable parameter: the zero-field Kondo temperature. In particular, the variation in the temperature and the height of the peak in C vs T is captured with good accuracy. This fit suggests that lattice coherence effects play no significant role in the magnetic-field response of this concentrated

Cuvinte cheie: Kondo, specific heat