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Atomically Precise GaAs/AlGaAs Quantum Dots Fabricated by Twofold Cleaved Edge Overgrowth

DOI to cite this document:
Wegscheider, Werner ; Schedelbeck, G. ; Abstreiter, Gerhard ; Rother, M. ; Bichler, Max
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Date of publication of this fulltext: 02 Nov 2009 13:23


The formation of a 7×7×7 nm3 size GaAs quantum dot (QD) at the intersection of three quantum wells is demonstrated for the first time. Intense radiative recombination between zero-dimensional states in the QDs is clearly identified by microscopic photoluminescence ( μPL). In contrast to the inhomogeneously broadened quantum well and quantum wire signals originating from the complex twofold ...


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