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From InSb Nanowires to Nanocubes: Looking for the Sweet Spot

Plissard, Sébastien R. and Slapak, Dorris R. and Verheijen, Marcel A. and Hocevar, Moïra and Immink, George W. G. and van Weperen, Ilse and Nadj-Perge, Stevan and Frolov, Sergey M. and Kouwenhoven, Leo P. and Bakkers, Erik P. A. M. (2012) From InSb Nanowires to Nanocubes: Looking for the Sweet Spot. Nano Letters, 12 (4). pp. 1794-1798. ISSN 1530-6984. doi:10.1021/nl203846g.

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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.

Item Type:Article
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URLURL TypeDescription ItemSupporting Information
Nadj-Perge, Stevan0000-0002-2916-360X
Additional Information:© 2012 American Chemical Society. Received: November 1, 2011. Revised: February 7, 2012. Published: February 24, 2012. The authors declare no competing financial interest.
Subject Keywords:Nanowire, nanocubes, InSb, growth mechanisms, arrays, mobility
Issue or Number:4
Record Number:CaltechAUTHORS:20160113-085622213
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Official Citation:From InSb Nanowires to Nanocubes: Looking for the Sweet Spot Sébastien R. Plissard, Dorris R. Slapak, Marcel A. Verheijen, Moïra Hocevar, George W. G. Immink, Ilse van Weperen, Stevan Nadj-Perge, Sergey M. Frolov, Leo P. Kouwenhoven, and Erik P. A. M. Bakkers Nano Letters 2012 12 (4), 1794-1798 DOI: 10.1021/nl203846g
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63620
Deposited By: Ruth Sustaita
Deposited On:13 Jan 2016 17:52
Last Modified:10 Nov 2021 23:19

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