Wire Width Dependence of Threshold Current Density for Domain Wall Motion in Co/Ni Nanowires

被引：9

作者：

Koyama, Tomohiro ^{[1
]}

Chiba, Daichi ^{[1
,2
]}

Ueda, Kohei ^{[1
]}

Tanigawa, Hironobu ^{[3
]}

Fukami, Shunsuke ^{[3
]}

Suzuki, Tetsuhiro ^{[3
]}

Ohshima, Norikazu ^{[3
]}

Ishiwata, Nobuyuki ^{[3
]}

Nakatani, Yoshinobu ^{[4
]}

Ono, Teruo ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Saitama 3220012, Japan

[3] NEC Corp Ltd, Kanagawa 2525298, Japan

[4] Univ Electrocommun, Tokyo 1828585, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 10期

关键词：

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

D O I：

10.1109/TMAG.2011.2157308

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 x 10(11) A/m(2) 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.

引用

页码：3089 / 3091

页数：3

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