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arxiv cond-mat/0502563 v1 pith:MQE6HN2I submitted 2005-02-23 cond-mat.str-el cond-mat.mtrl-sci

Is the Mott transition relevant to f-electron metals ?

classification cond-mat.str-el cond-mat.mtrl-sci
keywords transitionmottbandf-electronfinitefirst-orderhybridizationphase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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