title: Failure of the vapor-liquid-solid mechanism in Au-assisted MOVPE growth of InAs nanowires.
abstract: We report the temperature dependence of the Au-assisted growth of InAs nanowires in MOVPE. Extensive studies of the growth of such nanowires have attributed growth to the so-called vapor-liquid-solid (VLS) mechanism, with a liquid Au-In alloy particle. We assert here that growth is instead assisted by a solid particle and does not occur at all when the particle is a liquid. Thus the temperature range of InAs nanowire growth is limited by the melting of the Au-In alloy. Comparison with growth of InAs nanowires in the same system assisted by a layer of SiO(x) is used to support this conclusion.
authors.affiliation: Solid State Physics, Lund University, Box 118, S-221 00 Lund, Sweden. kimberly.dick@ftf.lth.se
authors.forename: Kimberly A
authors.initials: KA
authors.lastname: Dick
authors.forename: Knut
authors.initials: K
authors.lastname: Deppert
authors.forename: Thomas
authors.initials: T
authors.lastname: Mårtensson
authors.forename: Bernhard
authors.initials: B
authors.lastname: Mandl
authors.forename: Lars
authors.initials: L
authors.lastname: Samuelson
authors.forename: Werner
authors.initials: W
authors.lastname: Seifert