Is the Mott transition relevant to f-electron metals ?

Abstract

We study how a finite hybridization between a narrow correlated band and a wide conduction band affects the Mott transition. At zero temperature, the hybridization is found to be a relevant perturbation, so that the Mott transition is suppressed by Kondo screening. In contrast, a first-order transition remains at finite temperature, separating a local moment phase and a Kondo- screened phase. The first-order transition line terminates in two critical endpoints. Implications for experiments on f-electron materials such as the Cerium alloy Ce${}_{0.8}$La${}_{0.1}$Th${}_{0.1}$ are discussed.

5 pages, 3 figures

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