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

doi:10.1143/JJAP.51.028005

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 journal › Article

1 Citation (Scopus)

Abstract

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 language	English
Article number	028005
Journal	Japanese journal of applied physics
Volume	51
Issue number	2 PART 1
DOIs	https://doi.org/10.1143/JJAP.51.028005
Publication status	Published - 2012 Feb 1
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Hiramatsu, R., Kondou, K., Koyama, T., Yoshimura, Y., Chiba, D., Fukami, S., Ishiwata, N., & Ono, T. (2012). Effect of current on domain wall depinning field in Co/Ni nanowire. Japanese journal of applied physics, 51(2 PART 1), [028005]. https://doi.org/10.1143/JJAP.51.028005

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abstract = "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.",

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AU - Hiramatsu, Ryo

AU - Kondou, Kouta

AU - Koyama, Tomohiro

AU - Yoshimura, Yoko

AU - Chiba, Daichi

AU - Fukami, Shunsuke

AU - Ishiwata, Nobuyuki

AU - Ono, Teruo

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