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Concentric Multiple Rings by Droplet Epitaxy: Fabrication and Study of the Morphological Anisotropy
- Source :
- Nanoscale Research Letters, Vol 5, Iss 12, Pp 1865-1867 (2010)
- Publication Year :
- 2010
- Publisher :
- SpringerOpen, 2010.
-
Abstract
- 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.
Details
- Language :
- English
- ISSN :
- 19317573 and 1556276X
- Volume :
- 5
- Issue :
- 12
- Database :
- Directory of Open Access Journals
- Journal :
- Nanoscale Research Letters
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.84a3f6c969dc431db82a8e8ac2337677
- Document Type :
- article
- Full Text :
- https://doi.org/10.1007/s11671-010-9699-6