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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2010

Mesoscopic Kondo Box: A Mean-Field Approach

Résumé

We study the mesoscopic Kondo box, consisting of a quantum spin 1/2 interacting with a chaotic electronic bath as can be realized by a magnetic impurity coupled to electrons on a quantum dot, using a mean-field approach for the Kondo interaction. Its numerical efficiency allows us to analyze the Kondo temperature, the local magnetic susceptibility, and the conductance statistics for a large number of samples with energy levels obtained by random matrix theory. We see pronounced parity effects in the average values and in the probability distributions, depending on an even and odd electronic occupation of the quantum dot, respectively. These parity effects are directly accessible in experiments.

Dates et versions

hal-00527984 , version 1 (20-10-2010)

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Rainer Bedrich, Sébastien Burdin, Martina Hentschel. Mesoscopic Kondo Box: A Mean-Field Approach. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 81 (17), pp.174406 (5). ⟨10.1103/PhysRevB.81.174406⟩. ⟨hal-00527984⟩

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