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Title: Influence of the group V element on the chemical potential and crystal structure of Au-catalyzed III-V nanowires

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.
Authors:
 [1]
  1. St. Petersburg Academic University, Khlopina 8/3, 194021 St. Petersburg, Russia and Ioffe Physical Technical Institute RAS, Politekhnicheskaya 26, 194021 St. Petersburg (Russian Federation)
Publication Date:
OSTI Identifier:
22283233
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ALUMINIUM COMPOUNDS; CUBIC LATTICES; DIFFUSION; ELONGATION; GOLD; MOLECULAR BEAM EPITAXY; PNICTIDES; POTENTIALS; QUANTUM WIRES