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要旨:
Measurements of the specific heat as a function of temperature at varying magnetic fields for the Kondo lattice systems CeCu2Si2 and CeAl3 reveal that, on an energy scale ∼0.5 K≪TK, there is structure which is due to the periodicity and is qualitatively changed by disorder in the alloys Ce0.9Y0.1Cu2Si2, Ce0.8Y0.2Cu2Si2, and Ce0.8La0.2Cu2Si2. The results support the Fermi-liquid theory of Kondo lattices.