Current-driven ferromagnetic resonance in magnetic trilayers with a tilted spin polarizer

Current-driven ferromagnetic resonance in magnetic trilayers with a tilted spin polarizer
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具有倾斜自旋偏振器的磁性三层中的电流驱动铁磁共振

DOI:
10.1063/1.3081638
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发表时间:
2009-02
影响因子:
3.2
通讯作者:
Wang, Yan-Guo
Wang, Yan-Guo
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu, Wu-Ming;Li, Zai-Dong;Pan, An-Lian;Wan, Qiang;Wang, Ri-Xing;He, Peng-Bin;Zou, Bing-Suo;Zhang, Qing-Lin;Wang, Yan-Guo

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本文从理论上研究了倾斜自旋极化器作用下磁性三层膜中的电流激发和调制铁磁共振。通过线性化方法得到了电流扫描和频率扫描的谐振谱。我们发现,通过改变钉扎层中的电流和磁化强度,可以调节旋进频率、平衡位置、能量泵浦和阻尼以及共振线宽和位置。通过优化电流密度和钉扎磁化方向,能量泵浦将更有效。
We theoretically investigate the current-excited and adjusted ferromagnetic resonance in magnetic trilayers with a tilted spin polarizer. The current- and frequency-swept resonant spectra are obtained by the linearization method. We find that the precessional frequency, the equilibrium position, the energy pumping and damping, and the resonant linewidth and location can be adjusted by changing the current and the magnetization in the pinned layer. By optimizing the current density and the direction of the pinned magnetization, the energy pumping will be more efficient.
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