Rapid Domain Wall Motion in Permalloy Nanowires Excited by a Spin-Polarized Current Applied Perpendicular to the Nanowire

被引：63
|
作者：
Boone, C. T. [1 ]
Katine, J. A. [2 ]
Carey, M. [2 ]
Childress, J. R. [2 ]
Cheng, X. [1 ]
Krivorotov, I. N. [1 ]
机构：
[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[2] Hitachi Global Storage Technol, San Jose, CA 95135 USA
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.104.097203
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study domain wall dynamics in Permalloy nanowires excited by alternating spin-polarized current applied perpendicular to the nanowire. Spin torque ferromagnetic resonance measurements reveal that domain wall oscillations at a pinning site in the nanowire can be excited with velocities as high as 800 m/s at current densities below 10(7) A/cm(2).
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页数：4
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