Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations

Abstract

We study the effects of Kondo correlations on the transmission phase shift of a quantum dot coupled to two leads in comparison with the experimental determinations made by Aharonov-Bohm (AB) quantum interferometry. We propose here a theoretical interpretation of these results based on scattering theory combined with Bethe ansatz calculations. We show that there is a factor of 2 difference between the phase of the S-matrix responsible for the shift in the AB oscillations, and the one controlling the conductance. Quantitative agreement is obtained with experimental results for two different values of the coupling to the leads.

arXiv comment4 pages, 4 figures, accepted for publication in Physical Review Letters

References in corpus (8)

• A Tunable Kondo Effect in Quantum Dots
• From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor
• The Kondo Effect in the Unitary Limit
• The Anderson Model out of Equilibrium: Non-Crossing-Approximation Approach to Transport through a Quantum Dot
• Kondo Correlations and the Fano Effect in Closed AB-Interferometers
• Phase Evolution in a Kondo Correlated System
• Transmission Phase of a Quantum Dot with Kondo Correlation Near the Unitary Limit
• Transmission Phase Shift of a Quantum Dot with Kondo Correlations

Cited by in corpus (4)

• Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot
• Kondo Effect in Mesoscopic Quantum Dots
• Conductance Phases in Aharonov-Bohm Ring Quantum Dots
• Comment on "Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations"