Transmission through quantum dots: Focus on phase lapses

D. I. Golosov, Yuval Gefen

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

Measurements of the transmission phase in transport through a quantum dot embedded in an Aharonov-Bohm interferometer show systematic sequences of phase lapses separated by Coulomb peaks. Using a two-level quantum dot as an example we show that this phenomenon can be accounted for by the combined effect of asymmetric dot-lead coupling and interaction-induced "population switching" of the levels, rendering this behavior generic. In addition, we use the notion of spectral shift function to analyze the relationship between transmission phase lapses and the Friedel sum rule.

Original languageEnglish
Article number205316
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number20
DOIs
StatePublished - 2006
Externally publishedYes

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