Two Anderson Impurities in the Kondo Limit, Doublet States

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We analyze two pairs of doublet states for the two Anderson impurity problem. We found that for short interimpurity distances they have a lower energy than the ferro triplet and the antiferro singlet. For medium to long distances between the impurities, the doublets also have a lower energy than the two decoupled Kondo-singlet state for most of the range of interest. The mechanism behind their energy gain is an coherence enhanced Kondo-like interaction.
4 pages, 4 figurea

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Strongly Correlated Electrons, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/25989

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0503163
 http://arxiv.org/abs/cond-mat/0503163

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arXiv