论文标题
BI/NI80FE20双层膜中的可观自旋转移扭矩
Sizable spin-transfer torque in Bi/Ni80Fe20 bilayer film
论文作者
论文摘要
在BI中寻求有效的自旋转化率引起了自旋轨道人的极大关注。在目前的工作中，我们采用自旋扭转铁磁共振来研究BI/NI80FE20（PY）双层膜中的自旋转换，其BI厚度不断变化。与以前的研究相反，在BI/PY BiLayer膜中观察到了相当大的自旋转移扭矩（即相当大的自旋转换效应）。考虑到BI/YTTrium-Iron-Garnet双层中没有自旋转化率，并且在Bi-Doped Cu中的自旋转化率的增强表明，目前的结果表明材料组合在BI中产生实质性自旋转化效应的重要性。
The search for efficient spin conversion in Bi has attracted great attention in spin-orbitronics. In the present work, we employ spin-torque ferromagnetic resonance to investigate spin conversion in Bi/Ni80Fe20(Py) bilayer films with continuously varying Bi thickness. In contrast with previous studies, sizable spin-transfer torque (i.e., a sizable spin-conversion effect) is observed in Bi/Py bilayer film. Considering the absence of spin conversion in Bi/yttrium-iron-garnet bilayers and the enhancement of spin conversion in Bi-doped Cu, the present results indicate the importance of material combinations to generate substantial spin-conversion effects in Bi.
