Journal
PHYSICAL REVIEW B
Volume 65, Issue 24, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.65.245322
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In two recent papers, O. Entin-Wohlman [cond-mat/0109328 (unpublished) and (private communication)] studied the question: Which physical information is carried by the transmission phase through a quantum dot? In the present paper, this question is answered for an islolated Coulomb blockade resonance and within a theoretical model which is more closely patterned after the geometry of the actual experiment by Schuster [Nature 385, 417 (1997)] than is the model of O. Entin-Wohlman We conclude that whenever the number of leads coupled to the Aharanov-Bohm interferometer is larger than two, and the total number of channels is sufficiently large, the transmission phase does reflect the Breit-Wigner behavior of the resonance phase shift.
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