Two-impurity Kondo problem for correlated electrons

Details Two-impurity Kondo problem for correlated electrons Two-impurity Kondo problem for correlated electrons

1997-02-18

arxiv.org/abs/cond-mat/9702162v1

Phys. Rev. B vol.55 (1997) 8646

Physics

Condensed Matter

Strongly Correlated Electrons

RevTeX (version 3.0), 4 twocolumn pages with 6 embedded figures. To appear in PRB RC, April 1997

Scientific paper

10.1103/PhysRevB.55.R8646

The behavior of two magnetic impurities coupled to correlated electrons in one dimension is studied using the DMRG technique for several fillings. On-site Coulomb interactions among the electrons lead to a small Kondo screening cloud and an overall suppression of magnetic order. For arbitrary electronic correlations and large inter-impurity distances R, we find a 1/R^2 decay of magnetic correlations.

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