Fuhrer, A. and Sigrist, Martin and Meier, L. and Ihn, Thomas and Ensslin, Klaus and Wegscheider, Werner and Bichler, Max
Quantum rings as phase coherent detectors.
Physica E Low-dimensional Systems and Nanostructures 25 (2-3), pp. 303-312.
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Aharonov–Bohm oscillations are studied in the magnetoconductance through two micron-sized quantum rings. The structures are defined in a two-dimensional electron gas of a Ga[Al]As heterostructure by way of local oxidation with an atomic force microscope. In the experiments, the rings are used as phase-coherent detectors of the charge state of quantum dots coupled to the rings in two specific ...
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