Transmission Phase Shift of a Quantum Dot with Kondo Correlations
Strongly Correlated Electrons
2009-10-31 v2 Mesoscale and Nanoscale Physics
Abstract
We study the effects of Kondo correlations on the transmission phase shift of a quantum dot in an Aharonov-Bohm ring. We predict in detail how the development of a Kondo resonance should affect the dependence of the phase shift on transport voltage, gate voltage and temperature. This system should allow the first direct observation of the well-known scattering phase shift of pi/2 expected (but not directly measurable in bulk systems) at zero temperature for an electron scattering off a spin-1/2 impurity that is screened into a singlet.
Keywords
Cite
@article{arxiv.cond-mat/9909401,
title = {Transmission Phase Shift of a Quantum Dot with Kondo Correlations},
author = {Ulrich Gerland and Jan von Delft and Theo Costi and Yuval Oreg},
journal= {arXiv preprint arXiv:cond-mat/9909401},
year = {2009}
}
Comments
4 pages Revtex, 4 figures, final published version