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. © 2010 The Author(s).

Somaschini, C., Bietti, S., Fedorov, A., Koguchi, N., Sanguinetti, S. (2010). Concentric Multiple Rings by Droplet Epitaxy: Fabrication and Study of the Morphological Anisotropy. NANOSCALE RESEARCH LETTERS, 5(12), 1865-1867 [10.1007/s11671-010-9699-6].

Concentric Multiple Rings by Droplet Epitaxy: Fabrication and Study of the Morphological Anisotropy

SOMASCHINI, CLAUDIO;BIETTI, SERGIO;SANGUINETTI, STEFANO
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. © 2010 The Author(s).
Articolo in rivista - Articolo scientifico
quantum nanostructures; dropet epitaxy, III-V semiconductors
English
2010
5
12
1865
1867
none
Somaschini, C., Bietti, S., Fedorov, A., Koguchi, N., Sanguinetti, S. (2010). Concentric Multiple Rings by Droplet Epitaxy: Fabrication and Study of the Morphological Anisotropy. NANOSCALE RESEARCH LETTERS, 5(12), 1865-1867 [10.1007/s11671-010-9699-6].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/23669
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