title: Impact of the liquid phase shape on the structure of III-V nanowires.
abstract: The III-V nanowire structure (zinc blende or wurtzite) grown by the vapor-liquid-solid process is shown to be highly dependent on the parameters which shape the droplet at the top of the nanowire. Under conditions that the droplet volume does not exceed a certain value, it is demonstrated that when the nucleation of the solid starts at the solid-liquid-vapor triple line, a relatively large droplet volume and low wetting angle favor the formation of the wurtzite structure. We show that the effective V/III flux ratio is the primary parameter controlling the structure.
authors.affiliation: Nano-Science Center, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark. krogstrup@fys.ku.dk
authors.forename: Peter
authors.initials: P
authors.lastname: Krogstrup
authors.forename: Stefano
authors.initials: S
authors.lastname: Curiotto
authors.forename: Erik
authors.initials: E
authors.lastname: Johnson
authors.forename: Martin
authors.initials: M
authors.lastname: Aagesen
authors.forename: Jesper
authors.initials: J
authors.lastname: Nygård
authors.forename: Dominique
authors.initials: D
authors.lastname: Chatain