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Quantum wires and quantum dots defined by lithography with an atomic force microscope

Lüscher, S. ; Fuhrer, A. ; Held, R. ; Heinzel, Thomas ; Ensslin, Klaus ; Bichler, Max ; Wegscheider, Werner
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Date of publication of this fulltext: 07 Dec 2009 13:19


Abstract

Semiconductor nanostructures are realized by patterning AlGaAs/GaAs heterostructures with an atomic force microscope. Steep potential walls, precise pattern transfer and a combination of in-plane and top gates can be achieved with this technique. The electronic properties of nanostructures defined in this way are discussed on two examples, namely a quantum point contact and a single electron ...

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