Phys. Rev. Lett. 84, 3710–3713 (2000)Transmission Phase Shift of a Quantum Dot with Kondo CorrelationsReceived 4 November 1999; published in the issue dated 17 April 2000 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 π/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. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.3710
DOI:
10.1103/PhysRevLett.84.3710
PACS:
75.20.Hr, 72.15.Qm, 73.23.Hk, 73.20.Dx
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