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

Paladugu, Mochanchand, Zou, Jin, Guo, Ya-Nan, Zhang, Xin, Joyce, Hannah J., Gao, Qiang, Tan, H. Hoe, Jagadish, C. and Kim, Yong (2009) Crystallographically driven Au catalyst movement during growth of InAs/GaAs axial nanowire heterostructures. Journal of Applied Physics, 105 7: 073503.1-073503.4. doi:10.1063/1.3103265

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Author Paladugu, Mochanchand
Zou, Jin
Guo, Ya-Nan
Zhang, Xin
Joyce, Hannah J.
Gao, Qiang
Tan, H. Hoe
Jagadish, C.
Kim, Yong
Title Crystallographically driven Au catalyst movement during growth of InAs/GaAs axial nanowire heterostructures
Journal name Journal of Applied Physics   Check publisher's open access policy
ISSN 0021-8979
1089-7550
Publication date 2009-04-01
Sub-type Article (original research)
DOI 10.1063/1.3103265
Open Access Status File (Publisher version)
Volume 105
Issue 7
Start page 073503.1
End page 073503.4
Total pages 4
Editor J. P. Viccaro
Place of publication College Park, MD, United States
Publisher American Institute of Physics
Collection year 2010
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
970109 Expanding Knowledge in Engineering
970110 Expanding Knowledge in Technology
091203 Compound Semiconductors
091205 Functional Materials
100708 Nanomaterials
100712 Nanoscale Characterisation
Abstract The movement of Au catalysts during growth of InAs on GaAs nanowires has been carefully investigated by transmission electron microscopy. It has been found that Au catalysts preferentially stay on (112)(B) GaAs 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 these observations will be useful for the design of nanowire heterostructure based devices. (C) 2009 American Institute of Physics.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 073503

 
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Created: Thu, 03 Sep 2009, 07:53:35 EST by Mr Andrew Martlew on behalf of School of Mechanical and Mining Engineering