Absence of two energy scales in the two-impurity Kondo model

Details Absence of two energy scales in the two-impurity Kondo model Absence of two energy scales in the two-impurity Kondo model

1998-07-09

arxiv.org/abs/cond-mat/9807139v1

Phys. Rev. B 57, R6771 (1998)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 2 figures

Scientific paper

10.1103/PhysRevB.57.R6771

It is believed that the successive antiferromagnetic scattering of the conduction electrons on two magnetic impurities in a metal, induces a magnetic interaction between the impurities which sets an energy scale for the system, in addition to the Kondo temperature. However, it is shown here that this contradicts a scaling law for the two-impurity Anderson model in the magnetic limit which becomes exact for a large bandwidth.

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