Theory of the spin-torque-driven ferromagnetic resonance in a ferromagnet/normal-metal/ferromagnet structure
Theory of the spin-torque-driven ferromagnetic resonance in a ferromagnet/normal-metal/ferromagnet structure
复制标题
DOI：
10.1103/physrevb.74.134416
复制
发表时间：
2006-07
影响因子：
3.7
通讯作者：
J. N. Kupferschmidt;S. Adam;P. Brouwer
中科院分区：
文献类型：
--
作者：
J. N. Kupferschmidt;S. Adam;P. Brouwer
我们提出了铁磁体/普通金属/铁磁体三层中电流驱动的铁磁共振的理论分析。 Tulapurkar 等人最近通过实验实现了这种驱动铁磁共振的方法。 [Nature 438, 339 (2005)] 和 Sankey 等人。 [物理。莱特牧师。 96, 227601 (2006)]。进动磁化对用于驱动铁磁谐振的交流电进行整流，并产生直流电压。我们的分析表明，产生直流电压的第二种机制，即对进动磁化所发出的自旋电流进行整流，对直流电压的贡献与实验中使用的铁磁薄膜的大小大致相等。
We present a theoretical analysis of current driven ferromagnetic resonance in a ferromagnet/normal-metal/ferromagnet tri-layer. This method of driving ferromagnetic resonance was recently realized experimentally by Tulapurkar et al. [Nature 438, 339 (2005)] and Sankey et al. [Phys. Rev. Lett. 96, 227601 (2006)]. The precessing magnetization rectifies the alternating current applied to drive the ferromagnetic resonance and leads to the generation of a dc voltage. Our analysis shows that a second mechanism to generate a dc voltage, rectification of spin currents emitted by the precessing magnetization, has a contribution to the dc voltage that is of approximately equal size for the thin ferromagnetic films used in the experiment.