Wire width dependence of threshold current density for domain wall motion in Co/Ni nanowires

Tomohiro Koyama, Daichi Chiba, Kohei Ueda, Hironobu Tanigawa, Shunsuke Fukami, Tetsuhiro Suzuki, Norikazu Ohshima, Nobuyuki Ishiwata, Yoshinobu Nakatani, Teruo Ono

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The authors have investigated wire width dependence of threshold current density for current-induced magnetic domain wall (DW) motion in perpendicularly magnetized Co/Ni nanowires. Threshold current density decreased with reducing the wire width, and the lowest threshold value of 1.6× 1011 A/m2 was observed at the narrowest width of 36 nm. The micromagnetic simulation shows that the observed width dependence of threshold current density can be understood by the adiabatic spin transfer model.

Original languageEnglish
Article number6027788
Pages (from-to)3089-3091
Number of pages3
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 2011 Oct
Externally publishedYes

Keywords

  • 2-D magnetic recording
  • 2-D neural network equalizer
  • Channel modeling
  • double-shielded reader sensitivity function
  • genetic algorithms

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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