title: Ferromagnetic self-assembled quantum dots on semiconductor nanowires.
abstract: Ferromagnetic self-assembled alpha-MnAs quantum dots (QD) were grown epitaxially on metal catalyst-grown InAs nanowires (NW) by chemical vapor deposition. Magnetic force microscopy measurements demonstrated that the QDs are stable, single-domain ferromagnets with T(c) values of approximately 310 K. Single QD switching was demonstrated at fields as low as 60 Oe. The hybrid ferromagnetic/semiconductor QD/NW properties provide a promising basis for the development of nanowire spin-valves and magnetic memory devices.
authors.affiliation: Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: Dinna G
authors.initials: DG
authors.lastname: Ramlan
authors.forename: Steven J
authors.initials: SJ
authors.lastname: May
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Zheng
authors.forename: Jonathan E
authors.initials: JE
authors.lastname: Allen
authors.forename: Bruce W
authors.initials: BW
authors.lastname: Wessels
authors.forename: Lincoln J
authors.initials: LJ
authors.lastname: Lauhon