Paired Twins
and {11(2)over-bar} Morphology in GaP Nanowires
Algra RE, Verheijen MA, Feiner LF, et al.
NANO LETTERS Volume: 10 Issue: 7
Pages: 2349-2356
Abstract:
Formation of random as well as periodic planar defects can occur during
vapor−liquid−solid growth of nanowires with the zinc-blende crystal
structure. Here we investigate the formation of pairs of twin planes in
GaP nanowires. In such pairs, the first twin plane is formed at a
random position, rapidly followed by the formation of a second twin
plane of which the position is directly related to that of the first
one. We show that the triangular {11
}
morphology of the nanowire is a key element in the formation of these
twin pairs. We have extended our previous kinetic nucleation model and
show that this describes the development of the nanowire morphology and
its relation with the formation of single and paired twin planes.
