Effect of current on domain wall depinning field in Co/Ni nanowire

Ryo Hiramatsu, Kouta Kondou, Tomohiro Koyama, Yoko Yoshimura, Daichi Chiba, Shunsuke Fukami, Nobuyuki Ishiwata, Teruo Ono

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have investigated the effect of dc current on magnetic domain wall (DW) depinning fields in a perpendicularly magnetized Co/Ni nanowire by utilizing the giant magnetoresistance (GMR) effect. It was found that the current assisted (prevented) the domain wall depinning when the electron flow was parallel (antiparallel) to the DW depinning direction. The depinning field was found to exhibit a linear dependence on the dc current density, from which the efficiency of the effective field was estimated to be -1.5 × 10 -14 Tm 2/A.

Original languageEnglish
Article number028005
JournalJapanese Journal of Applied Physics
Issue number2 PART 1
Publication statusPublished - 2012 Feb


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