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

Kurt Fischer
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Abstract

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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Kurt Fischer. 1998-07-09. Absence of two energy scales in the two-impurity Kondo model. https://doi.org/10.1103/physrevb.57.r6771

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