The Kondo effect in periodic narrow-band systems

Details The Kondo effect in periodic narrow-band systems The Kondo effect in periodic narrow-band systems

1999-11-25

arxiv.org/abs/cond-mat/9911405v2

European Phys. J. B 16, 463-468 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, LaTeX, 6 eps figures

Scientific paper

The Kondo divergences owing to interaction of current carriers with local moments in highly correlated electron systems are considered within the Hubbard and s-d exchange models with infinitely strong on-site interaction, the many-electron Hubbard representation being used. The picture of density of states containing a peak at the Fermi level is obtained. Various forms of the self-consistent approximation are used. The problem of the violation of analytical properties of the Green's function is discussed. Smearing of the "Kondo" peak owing to spin dynamics and finite temperatures is investigated.

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