Magnetic Domain Wall Ferromagnetic Resonance in Ferromagnetic Nanowires Due to the Spin Transfer Torque

被引：10
|
作者：
Yoon, Jungbum [1 ]
You, Chun-Yeol [1 ]
Jo, Younghun [2 ]
Park, Seung-Young [2 ]
Jung, Myung-Hwa [3 ]
机构：
[1] Inha Univ, Dept Phys, Inchon 402751, South Korea
[2] Korea Basic Sci Inst, Div Mat Sci, Taejon 305333, South Korea
[3] Sogang Univ, Dept Phys, Seoul 121742, South Korea
来源：
APPLIED PHYSICS EXPRESS | 2011年 / 4卷 / 06期
关键词：
TUNNEL-JUNCTIONS; MOTION; DEPENDENCE; LAYER;
D O I：
10.1143/APEX.4.063006
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The influence of the spin transfer torque on a domain wall is investigated by domain wall ferromagnetic resonance micromagnetic simulations. When current is applied to the pinned domain wall in a ferromagnetic nanowire, we find two resonance frequencies of the domain wall around 2 and 7 GHz. The lower peaks represent the vibration of the whole domain wall. The higher peaks are due to the resonance frequency of the spins inside the domain wall, which show remarkable (>1.6 GHz) shifts with the spin torque. Since no domain wall displacement is involved, we can exclude the effects of the unwanted extrinsic pinning sites. (C) 2011 The Japan Society of Applied Physics
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页数：3
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