Concentric Multiple Rings by Droplet Epitaxy: Fabrication and Study of the Morphological Anisotropy
Academic Article
Publication Date:
2010
abstract:
We present the Molecular Beam Epitaxy fabrication
of complex GaAs/AlGaAs nanostructures by
Droplet Epitaxy, characterized by the presence of concentric
multiple rings. We propose an innovative experimental
procedure that allows the fabrication of individual
portions of the structure, controlling their diameter by only
changing the substrate temperature. The obtained nanocrystals
show a significant anisotropy between [110] and
[1-10] crystallographic directions, which can be ascribed
to different activation energies for the Ga atoms migration
processes.
of complex GaAs/AlGaAs nanostructures by
Droplet Epitaxy, characterized by the presence of concentric
multiple rings. We propose an innovative experimental
procedure that allows the fabrication of individual
portions of the structure, controlling their diameter by only
changing the substrate temperature. The obtained nanocrystals
show a significant anisotropy between [110] and
[1-10] crystallographic directions, which can be ascribed
to different activation energies for the Ga atoms migration
processes.
Iris type:
01.01 Articolo in rivista
List of contributors:
Fedorov, Alexey
Published in: