The Mesoscopic Kondo Box: A Mean-Field Approach

Abstract

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 umerical 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.

5 pages, 3 figures

References in corpus (9)

• The numerical renormalization group method for quantum impurity systems
• Noisy Kondo impurities
• Detecting the Kondo screening cloud in conductance measurements on quantum dots
• Kondo screening cloud effects in mesoscopic devices
• Disorder-quenched Kondo effect in mesosocopic electronic systems
• Universal Distribution of Kondo Temperatures in Dirty Metals
• Mesoscopic Kondo Problem
• Even-Odd Effect in Spontaneously Coherent Bilayer Quantum Hall Droplets
• Parity-dependent Kondo effect in ultrasmall metallic grains

Cited by in corpus (6)

• Competition between Kondo screening and indirect magnetic exchange in a quantum box
• Mesoscopic Anderson Box: Connecting Weak to Strong Coupling
• From Weak- to Strong-Coupling Mesoscopic Fermi Liquids
• Kondo Screening and Indirect Magnetic Exchange through a Conventional Superconductor Studied by the Density-Matrix Renormalization Group
• Fermi-liquid regime of the mesoscopic Kondo problem
• Fano-Kondo and the Kondo-box regimes crossover in a quantum dot coupled to a quantum box