Magnetic susceptibility of Ce: an LDA+DMFT study

Abstract

The magnetic properties of Ce in the $\hat{I}\pm$ and ${\hat{I}}^3$ phase are calculated within the LDA+DMFT approach. The magnetic susceptibility in these two phases shows a similar behavior over a wide temperature range: a Curie-Weiss law at high temperatures, indicating the presence of local moments, followed by a maximum in a crossover regime, and a saturation characteristic of a state with screened local moments at low temperature. The difference in experimentally observable magnetic properties is caused by the shift of the susceptibility to higher temperatures in the $\hat{I}\pm -$phase compared to the ${\hat{I}}^3-$phase, due to the larger hybridization between localized $4f-$states and conductive $spd-$electrons.

4 pages, 4 figures