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Magnetic-Field-Dependent Transmission Phase of a Double-Dot System in a Quantum Ring

Sigrist, Martin ; Fuhrer, A. ; Ihn, Thomas ; Ensslin, Klaus ; Ulloa, S. E. ; Wegscheider, Werner ; Bichler, Max
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Date of publication of this fulltext: 11 Jan 2010 13:06


Abstract

The Aharonov-Bohm effect is measured in a four-terminal open ring geometry. Two quantum dots are embedded in the structure, one in each of the two interfering paths. The number of electrons in the two dots can be controlled independently. The transmission phase is measured as electrons are added to or taken away from the individual quantum dots. Although the measured phase shifts are in ...

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