Is the Mott transition relevant to f-electron metals ?

Details Is the Mott transition relevant to f-electron metals ? Is the Mott transition relevant to f-electron metals ?

2005-02-23

arxiv.org/abs/cond-mat/0502563v1

Phys. Rev. Lett. 95, 066402 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.95.066402

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.

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