Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4864276
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Funding
- Russian Academy of Sciences [21]
- Russian Foundation for Basic Research [13-02-12405, 13-02-00662]
- FP7 project NANOEMBRACE [316751]
- FP7 project FUNPROB [269169]
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We present a kinetic growth model having a particular emphasis on the influence of the group V element on the preferred crystal structure of Au-catalyzed III-V nanowires. The model circumvents the uncertainty in the group V contribution into the overall liquid chemical potential. We show why the nanowire elongation rate is limited by the group III transport, while the crystal structure depends on the effective group V to III imbalance. Within the model, we are able to explain some important structural trends in Au-catalyzed III-V nanowires. In particular, we show that high group V flux always favors wurtzite structure in molecular-beam epitaxy. This tendency could be inverted in vapor deposition techniques due to suppression of the group III diffusion at high group V flux. (C) 2014 AIP Publishing LLC.
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