论文标题
同时观察la $ _ {0.67} $ sr $ _ {0.33} $ mno $ _ {3} $/pt BiLayer系统
Simultaneous observation of anti-damping and inverse spin Hall effect in La$_{0.67}$Sr$_{0.33}$MnO$_{3}$/Pt bilayer system
论文作者
论文摘要
锰矿在旋转中表现出潜力，因为它们表现出高自旋极化。在这里，通过铁磁共振，我们研究了la $ _ {0.67} $ sr $ _ {0.33} $ mno $ $ _ {3} $/pt双层的阻尼特性。 LA $ _ {0.67} $ sr $ _ {0.33} $ mno $ _ {3} $（lsmo）单层的阻尼系数（$α$）$ _ {0.67} $ sr $ _ {0.33} $ mno $ _ {3} $（LSMO）。但是，LSMO/PT双层均显示出$α$的下降，而PT厚度的增加。 $α$的值的下降可能是由于较高的抗阻尼像扭矩。此外，我们已经研究了角度依赖性逆旋霍尔效应（ISHE），以量化其他自旋矫正效应（例如异常霍尔效应和各向异性磁路）的自旋泵送电压。我们已经观察到高旋转泵电压（$ \ sim $ 〜20 $μv$）。结果表明，抗阻尼和旋转泵送现象同时发生。
Manganites have shown potential in spintronics because they exhibit high spin polarization. Here, by ferromagnetic resonance we have studied the damping properties of La$_{0.67}$Sr$_{0.33}$MnO$_{3}$/Pt bilayers which are prepared by oxide molecular beam epitaxy. The damping coefficient ($α$) of La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ (LSMO) single layer is found to be 0.0104. However the LSMO/Pt bilayers exhibit decrease in $α$ with increase in Pt thickness. This decrease in the value of $α$ is probably due to high anti-damping like torque. Further, we have investigated the angle dependent inverse spin Hall effect (ISHE) to quantify the spin pumping voltage from other spin rectification effects such as anomalous Hall effect and anisotropic magnetoresistance. We have observed high spin pumping voltage ($\sim$~20 $ μV$). The results indicate that both anti-damping and spin pumping phenomena are occuring simultaneously.
