Two Impurity Anderson problem: Perturbative Kondo-Doublet interaction

Details Two Impurity Anderson problem: Perturbative Kondo-Doublet interaction Two Impurity Anderson problem: Perturbative Kondo-Doublet interaction

2008-06-03

arxiv.org/abs/0806.0580v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages

Scientific paper

We reobtain the Kondo-Doublet interaction by means of the Brillouin-Wigner Perturbation theory. By applying the same method to the single impurity case we show that the Kondo-Doublet interaction is a direct consequence of the Kondo screening cloud. We fully confirm our previous results on this novel interaction. In particular, we found that for values of the system parameters typical of semiconductor Quantum Dots heterostructures, the ferromagnetic Kondo-Doublet interaction dominates over the RKKY one.

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