Coulomb-coupled concentric quantum rings

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.12627

Mühle, A. ; Wegscheider, Werner ; Haug, Rolf J.

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Veröffentlichungsdatum dieses Volltextes: 01 Feb 2010 13:00

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Zusammenfassung

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 ...