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Self-organized, vertically stacked 1-D (quantum wires) and 0-D (quantum dots) low-dimensional materials can exhibit different optical and structural properties by virtue of the different strength of coupling, which is related to the thickness of the barrier layers. In this work these properties have been investigated for In x Ga 1-x As/GaAs self-organized quantum structures...
We show how the electronic states of quantum wires and quantum dots can be evaluated exactly starting from the profile of the nanostructure observed by transmission electron microscopy, scanning tunneling microscopy and atomic force microscopy. The calculated quantization energies reproduce the energy position of the luminescence resonances in the optical spectra of different samples, without fitting...
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