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Crystallographically driven Au catalyst movement during growth of InAs/GaAs axial nanowire heterostructures

Paladugu, Mohanchand; Zou, Jin; Guo, Ya-Nan; Zhang, Xin; Joyce, Hannah J; Gao, Qiang; Tan, Hark Hoe; Jagadish, C; Kim, Yong

Description

The movement of Au catalysts during growth of InAs on GaAsnanowires has been carefully investigated by transmission electron microscopy. It has been found that Au catalysts preferentially stay on {112}BGaAs sidewalls. Since a {112} surface is composed of a {111} facet and a {002} facet and since {111} facets are polar facets for the zinc-blende structure, this crystallographic preference is attributed to the different interface energies caused by the different polar facets. We anticipate that...[Show more]

CollectionsANU Research Publications
Date published: 2009-04-01
Type: Journal article
URI: http://hdl.handle.net/1885/16036
Source: Journal of Applied Physics
DOI: 10.1063/1.3103265

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