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Kondo breakdown as a selective Mott transition in the Anderson lattice

Kondo breakdown as a selective Mott transition in the Anderson lattice

Physical Review Letters 98(20): 206401

We show within the slave-boson technique that the Anderson lattice model exhibits a Kondo breakdown quantum critical point where the hybridization goes to zero at zero temperature. At this fixed point, the f electrons experience as well a selective Mott transition separating a local-moment phase from a Kondo-screened phase. The presence of a multiscale quantum critical point in the Anderson lattice in the absence of magnetism is discussed in the context of heavy fermion compounds. This study is the first evidence for a selective Mott transition in the Anderson lattice.

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Accession: 054052372

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PMID: 17677718

DOI: 10.1103/physrevlett.98.206401

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