Understanding the 3D structure of GaAs nanowires

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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
StatusPublished - 2007

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041), Solid State Physics (011013006)

Ämnesklassifikation (UKÄ)

  • Nanoteknik


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