Ferromagnetic self-assembled quantum dots on semiconductor nanowires

Dinna G. Ramlan, Steven J. May, Jian Guo Zheng, Jonathan E. Allen, Bruce W. Wessels, Lincoln J. Lauhon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


Ferromagnetic self-assembled α-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 ∼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.

Original languageEnglish (US)
Pages (from-to)50-54
Number of pages5
JournalNano letters
Issue number1
StatePublished - Jan 2006

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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