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

RIEC - Computing System Platforms Division

Research output: Contribution to journal › Article › peer-review

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

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10.1143/JJAP.51.028005

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title = "Effect of current on domain wall depinning field in Co/Ni nanowire",

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.",

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

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T1 - Effect of current on domain wall depinning field in Co/Ni nanowire

AU - Hiramatsu, Ryo

AU - Kondou, Kouta

AU - Koyama, Tomohiro

AU - Yoshimura, Yoko

AU - Chiba, Daichi

AU - Fukami, Shunsuke

AU - Ishiwata, Nobuyuki

AU - Ono, Teruo

PY - 2012/2

Y1 - 2012/2

N2 - 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.

AB - 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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JO - Japanese Journal of Applied Physics

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

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