Phys. Rev. Lett. 95, 127203 (2005) [4 pages]Theoretical Analysis of the Transmission Phase Shift of a Quantum Dot in the Presence of Kondo CorrelationsReceived 10 March 2005; published 14 September 2005 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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.127203
DOI:
10.1103/PhysRevLett.95.127203
PACS:
75.20.Hr, 72.15.Qm, 73.21.La, 73.23.Hk
See AlsoComment: A. Aharony, O. Entin-Wohlman, Y. Oreg, and J. van Delft, Comment on “Theoretical Analysis of the Transmission Phase Shift of a Quantum Dot in the Presence of Kondo Correlations”, Phys. Rev. Lett. 96, 189705 (2006). Reply: M. Lavagna, P. Vitushinsky, and A. Jerez, Lavagna et al. Reply:, Phys. Rev. Lett. 96, 189706 (2006). |
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