Kondo lattice and the formation of a heavy-fermion state

Zlatko Tesanovic, Oriol T. Valls

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

We develop a new theoretical model for the Kondo lattice. We find that the Kondo lattice is qualitatively different from a collection of independent impurities: The ground state is characterized by coherence in the effective hybridization matrix. The low-temperature excitations are heavy fermions. The interactions between heavy fermions mediated by fluctuations around the mean-field solution are weak but can be long ranged in the Kondo regime. As a result, the Kondo lattice is prone to instabilities which we discuss in the context of recent experiments.

Original languageEnglish (US)
Pages (from-to)1918-1925
Number of pages8
JournalPhysical Review B
Volume34
Issue number3
DOIs
StatePublished - 1986

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