Single-electron effects in a coupled dot-ring system

DOI to cite this document:: 10.5283/epub.11808

Meier, L. ; Fuhrer, A. ; Ihn, Thomas

; Ensslin, Klaus ; Wegscheider, Werner ; Bichler, Max

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Date of publication of this fulltext: 11 Jan 2010 13:10

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Abstract

Aharonov-Bohm oscillations are studied in the magnetoconductance of a micron-sized open quantum ring coupled capacitively to a Coulomb-blockaded quantum dot. As the plunger gate of the dot is modulated and tuned through a conductance resonance, the amplitude of the Aharonov-Bohm oscillations in the transconductance of the ring displays a minimum. We demonstrate that the effect is due to a ...