3 research outputs found
From InSb Nanowires to Nanocubes: Looking for the Sweet Spot
High aspect ratios are highly desired to fully exploit the one-dimensional properties of indium antimonide nanowires. Here we systematically investigate the growth mechanisms and find parameters leading to long and thin nanowires. Variation of the V/III ratio and the nanowire density are found to have the same influence on the “local” growth conditions and can control the InSb shape from thin nanowires to nanocubes. We propose that the V/III ratio controls the droplet composition and the radial growth rate and these parameters determine the nanowire shape. A sweet spot is found for nanowire interdistances around 500 nm leading to aspect ratios up to 35. High electron mobilities up to 3.5 × 10^4 cm^2 V^(–1) s^(–1) enable the realization of complex spintronic and topological devices
From InSb Nanowires to Nanocubes: Looking for the Sweet Spot
High aspect ratios are highly desired to fully exploit
the one-dimensional properties of indium antimonide nanowires. Here
we systematically investigate the growth mechanisms and find parameters
leading to long and thin nanowires. Variation of the V/III ratio and
the nanowire density are found to have the same influence on the “local”
growth conditions and can control the InSb shape from thin nanowires
to nanocubes. We propose that the V/III ratio controls the droplet
composition and the radial growth rate and these parameters determine
the nanowire shape. A sweet spot is found for nanowire interdistances
around 500 nm leading to aspect ratios up to 35. High electron mobilities
up to 3.5 × 10<sup>4</sup> cm<sup>2</sup> V<sup>–1 </sup>s<sup>–1</sup> enable the realization of complex spintronic
and topological devices