Calculation of the magnetic susceptibility of a cerium Kondo system in the Anderson model

Abstract

We have calculated the magnetic susceptibility of a cerium Kondo system in the Anderson model by a perturbation expansion up to fourth order, for temperatures $T\gg T_K$. An evaluation of the Kondo temperature is given. In the dilute system ${\mathrm{La}}_{1-x}{\mathrm{Ce}}_x{\mathrm{Al}}_2$ ($x\simeq 0.02$), the agreement between calculated and experimental values is very good. The comparison between susceptibility measurements of Ce${\mathrm{In}}_3$ and calculated values shows that the Kondo temperature of this compound is high, in agreement with the analysis of its resistivity curve.