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Understanding the 3D structure of GaAs nanowires

Karlsson, Lisa LU ; Dick Thelander, Kimberly LU ; Wagner, Jakob LU ; Malm, Jan-Olle LU ; Deppert, Knut LU ; Samuelson, Lars LU and Wallenberg, Reine LU (2007) In Nanotechnology 18(48).
Abstract
The effects of lamellar twinning in epitaxial particle-assisted GaAs <111>B nanowires are investigated in an extensive high resolution electron

microscopy (HRTEM) study of the low index zones <-100>, <-1-10>, <1-1-1> and

<1-1-2>. As these directions are non-parallel to the (-1-1-1) twin planes we find

that the twin segments exhibit two different zone axes as a consequence of

twinning. In the first three cases the alternative zones were found to be <1-2-2>

<11-4> and <11-5>. These findings are supported by a comparison of

experimental HRTEM images and multi-slice simulations along with fast

Fourier transform mapping. From the... (More)
The effects of lamellar twinning in epitaxial particle-assisted GaAs <111>B nanowires are investigated in an extensive high resolution electron

microscopy (HRTEM) study of the low index zones <-100>, <-1-10>, <1-1-1> and

<1-1-2>. As these directions are non-parallel to the (-1-1-1) twin planes we find

that the twin segments exhibit two different zone axes as a consequence of

twinning. In the first three cases the alternative zones were found to be <1-2-2>

<11-4> and <11-5>. These findings are supported by a comparison of

experimental HRTEM images and multi-slice simulations along with fast

Fourier transform mapping. From the appearance of non-overlapping regions

we conclude that the nanowires are bound by {111} facets only. The twin

formation and the development of the stable side facets are discussed (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanotechnology
volume
18
issue
48
publisher
IOP Publishing
external identifiers
  • wos:000250725600037
  • scopus:35748984098
ISSN
0957-4484
DOI
10.1088/0957-4484/18/48/485717
language
English
LU publication?
yes
id
e1a45554-b89a-4fa0-9e74-cb7e5855d398 (old id 644203)
date added to LUP
2007-12-03 16:33:25
date last changed
2017-10-22 03:34:39
@article{e1a45554-b89a-4fa0-9e74-cb7e5855d398,
  abstract     = {The effects of lamellar twinning in epitaxial particle-assisted GaAs &lt;111&gt;B nanowires are investigated in an extensive high resolution electron<br/><br>
microscopy (HRTEM) study of the low index zones &lt;-100&gt;, &lt;-1-10&gt;, &lt;1-1-1&gt; and<br/><br>
&lt;1-1-2&gt;. As these directions are non-parallel to the (-1-1-1) twin planes we find<br/><br>
that the twin segments exhibit two different zone axes as a consequence of<br/><br>
twinning. In the first three cases the alternative zones were found to be &lt;1-2-2&gt;<br/><br>
&lt;11-4&gt; and &lt;11-5&gt;. These findings are supported by a comparison of<br/><br>
experimental HRTEM images and multi-slice simulations along with fast<br/><br>
Fourier transform mapping. From the appearance of non-overlapping regions<br/><br>
we conclude that the nanowires are bound by {111} facets only. The twin<br/><br>
formation and the development of the stable side facets are discussed},
  articleno    = {485717},
  author       = {Karlsson, Lisa and Dick Thelander, Kimberly and Wagner, Jakob and Malm, Jan-Olle and Deppert, Knut and Samuelson, Lars and Wallenberg, Reine},
  issn         = {0957-4484},
  language     = {eng},
  number       = {48},
  publisher    = {IOP Publishing},
  series       = {Nanotechnology},
  title        = {Understanding the 3D structure of GaAs nanowires},
  url          = {http://dx.doi.org/10.1088/0957-4484/18/48/485717},
  volume       = {18},
  year         = {2007},
}