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Coulomb-coupled concentric quantum rings

DOI to cite this document:
Mühle, A. ; Wegscheider, Werner ; Haug, Rolf J.
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Date of publication of this fulltext: 01 Feb 2010 13:00


We present measurements done on a novel device consisting of two concentric quantum rings realized by local anodic oxidation in a GaAs/AlGaAs heterostructure. The outer ring is connected to external leads while the inner ring is only Coulomb-coupled to the rest of the system. We studied the electronic transport through the outer ring in dependence of an external magnetic field and found a ...


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