Quantitative Evaluation of Heating Effect on Dynamical Spin Injection Using CoFeB/Pt/CoFeB Trilayered Film
Quantitative Evaluation of Heating Effect on Dynamical Spin Injection Using CoFeB/Pt/CoFeB Trilayered Film
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DOI：
10.1109/tmag.2021.3087797
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发表时间：
2022-02
影响因子：
2.1
通讯作者：
S. Obinata;R. Iimori;K. Ohnishi;T. Kimura
中科院分区：
文献类型：
--
作者：
S. Obinata;R. Iimori;K. Ohnishi;T. Kimura
我们研究了CoFeB/Pt/CoFeB三层结构中的动态自旋注入。虽然自旋泵的贡献被消除的对称自旋注入从上部和下部的CoFeB层，一个明确的电压变化，由于逆自旋霍尔效应已被观察到。我们发现，通过考虑铁磁共振（FMR）过程中热效应引起的热自旋注入，可以定量地解释所观察到的信号。这一创新的演示表明了FMR加热在动态自旋注入中的显着贡献。
We have examined a dynamical spin injection in a CoFeB/Pt/CoFeB trilayered structure. Although the contribution of the spin pumping was eliminated by the symmetric spin injection from the upper and lower CoFeB layers, a clear voltage change due to the inverse spin Hall effect has been observed. We find that the observed signal can be quantitatively explained by considering the thermal spin injection due to the heating effect during ferromagnetic resonance (FMR). This innovative demonstration indicates the significant contribution of FMR heating in the dynamical spin injection.