Spin-torque diode spectrum of a spin valve with a synthetic antiferromagnetic reference layer
Spin-torque diode spectrum of a spin valve with a synthetic antiferromagnetic reference layer
复制标题
DOI：
10.7567/jjap.53.123001
复制
发表时间：
2014-11
影响因子：
1.5
通讯作者：
R. Matsumoto;H. Kubota;T. Yamaji;H. Arai;S. Yuasa;H. Imamura
中科院分区：
文献类型：
--
作者：
R. Matsumoto;H. Kubota;T. Yamaji;H. Arai;S. Yuasa;H. Imamura
从理论上分析了反铁磁参考层自旋阀的自旋力矩二极管（STD）效应。基于宏观自旋模型，导出了STD谱的解析表达式。得到的结果使我们能够分析自旋转移力矩（STT）的参考层上的作用。在参考层的谐振频率处的STD谱的峰值取决于由从钉扎层注入的RF电流生成的STT的幅度而改变其符号。
The spin torque diode (STD) effect of a spin-valve with a synthetic antiferromagnetic reference layer is theoretically analyzed. Based on the macrospin model the analytical expression of the STD spectrum is derived. The obtained result enables us to analyze the spin transfer torque (STT) acting on the reference layer. The peak of the STD spectrum at the resonance frequencies of the reference layer changes its sign depending on the magnitude of the STT which is generated by the RF current injected from the pinned layer.