Looking for the Kondo cloud

Details Looking for the Kondo cloud Looking for the Kondo cloud

2007-08-27

arxiv.org/abs/0708.3604v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, including 2 figures

Scientific paper

We study the spatial distribution of the Kondo screening cloud. We find that in 3 D the spatial range of the cloud is limited to distances of the order of the Fermi wavelength due to angular dispersion effects. In lower dimensions this effect is less important and thus the Kondo length determines the localization of the cloud around the magnetic impurity. We clarify the role of the Kondo cloud in the impurity-impurity interactions: the hole coherence factor of the Kondo-doublet interaction is proportional to the amplitude of the Kondo cloud. We single out an experimental setup in which the Kondo cloud could be directly measured.

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