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Motivated by a recent experiment by Yacoby et al. Phys. Rev. Lett. 74, 4047 (1995), we calculate the transmission through a quantum dot which is embedded in one arm of an Aharonov-Bohm (AB) ring. We allow for several channels in the AB ring. The electron-electron interaction within the dot is treated in a self-consistent mean-field approximation. We show that the amplitude of the ₀-periodic Aharonov-Bohm oscillations generically vanishes close to a conductance resonance of the dot. This leads to a sudden phase change by in these oscillations, in agreement with observation.
Hackenbroich et al. (1996) studied this question.
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