Absence of two energy scales in the two-impurity Kondo model
arXiv:cond-mat/9807139 · doi:10.1103/PhysRevB.57.R6771
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.
5 pages, 2 figures