We present gauge-invariant theory of the dynamic inverse spin Hall effect driven by the spin--orbit interaction in metallic systems. Charge conservation is imposed diagrammatically by including vertex corrections. We show the charge current is induced by an effective electric field that is proportional to the spin current pumped by the magnetization dynamics. The result is consistent with recent experiments.
We study theoretically and experimentally the spin pumping signals induced by the resonance of canted antiferromagnets with Dzyaloshinskii-Moriya interaction and demonstrate that they can generate easily observable inverse spin-Hall voltages. Using a bilayer of hematite/heavy metal as a model system, we measure at room temperature the antiferromagnetic resonance and an associated inverse spin-Hall voltage, as large as in collinear antiferromagnets. As expected for coherent spin-pumping, we observe that the sign of the inverse spin-Hall voltage provides direct information about the mode handedn…
Relative weight of the inverse spin Hall and spin rectification effects for metallic Py,Fe/Pt and insulating YIG/Pt bilayers estimated by angular dependent spin pumping measurements
Josephson phase shift and diode effect due to the inverse spin Hall effect
RIKEN Center for Emergent Matter Science (CEMS)（理化学研究所新兴物质科学中心）；Graduate School of Advanced Science and Engineering, Hiroshima University（广岛大学先进理工学研究科）；CINaM, Aix-Marseille University（艾克斯-马赛大学中子与磁性材料中心）
Recent progress in orbitronics reveals the possibility of using orbit current as an information carrier. The interconversion between orbit currents and charge currents is crucial for orbit information processing. Although orbit currents can be created from charge currents via the orbital Hall effect, the conversion from orbit currents into charge currents has been observed only in very few systems due to the lack of a reliable orbit current source and the disturbance of the omnipresent inverse spin Hall effect. In this study, we show that ultrafast pulses of orbit current can be generated in N…
Anomalous spin-Hall effects (SHE) and anomalous inverse spin-Hall effects (ISHE) are predicted when the order parameters are involved in the charge-spin interconversion. A spin current whose propagation and polarization are collinear and transverse to an applied charge current can be generated when the charge current is parallel to the magnetization $\vec M$ in a ferromagnet or to the Neel order $\vec n$ in an anti-ferromagnet. When the applied charge current is perpendicular to the order parameter, two spin currents can be generated. One is the spin current polarized along the order parameter…
The measured Hall angle in a ferromagnetic nanomagnet shows a substantial non-linear dependence on an external magnetic field, which cannot be explained by adopted mechanisms of the Ordinary and Anomalous (AHE) Hall effects implying a linear plus constant dependence on the external magnetic field. We suggest that there is an additional non-linear contribution from the Inverse Spin Hall effect (ISHE). The significant contribution of ISHE in a ferromagnet is supported by perfect agreement of experiment with a phenomenological theory of ISHE. We observed different dependencies of AHE and ISHE on …
Study of the spin-pump-induced inverse spin-Hall effect in Bi doped n-type Si
实验观察到n型硅中导电电子在铋的自旋轨道势上散射时的逆自旋霍尔效应。硅层中的自旋电流是由沉积在掺杂磷和铋的Si层上的薄坡莫合金（Py）层中的铁磁共振期间的磁化进动的激发产生的。从沿[011]或[100]晶轴排列的不同Py/n-Si：Bi结构的直流电压的角度依赖性，我们能够区分平面霍尔效应（PHE）和ISHE贡献。对于与[011]晶轴对齐的结构，ISHE直流电压信号与sinθ* sin 2 θ乘积成比例，对于[100]晶轴对齐的结构，ISHE直流电压信号与sinθ* cos 2 θ乘积成比例。此外，对于与sin 2 θ依赖性相对应的角度，观察到PHE直流电压。这意味着，对于作为多谷半导体的硅，由于浅施主在n型材料中诱导的自旋轨道势引起的自旋散射取决于谷轴相对于磁场方向的取向。
All-electrical detection of spin dynamics in magnetic antidot lattices by the inverse spin Hall effect
在亚微米尺度上对横向受限结构中自旋动力学的理解已经成为新型磁存储技术发展的一个重要方面。众多的铁磁共振测量，光学特性的克尔显微镜和布里渊光散射光谱和X射线研究进行了检测图案化的磁性antidot晶格的动态。在这里，我们调查奥斯特场驱动的自旋动力学在矩形Ni 80 Fe 20/Pt反点晶格与不同的晶格参数通过电气手段，并比较它们的微磁学模拟。当系统被驱动到谐振时，检测到样品长度上的直流电压，其在场反转时改变其符号，这与基于逆自旋霍尔效应的整流机制一致。此外，我们表明，电压输出的比例线性与所施加的微波驱动在调查范围内的功率。我们的研究结果对工程磁振子应用和器件的发展有直接的影响。
Spin-pumping-induced inverse spin-Hall effect in Nb/Ni80Fe20 bilayers and its strong decay across the superconducting transition temperature
通过在铁磁共振条件下测量Nb/Ni_（80）Fe_（20）双层膜的逆自旋霍尔效应（iSHE），定量计算了Nb的自旋霍尔角θSH和自旋扩散长度lsd.通过改变Nb厚度tNb并与Ni 80 Fe 20/Pt参比样品进行比较，Nb的θSH和lsd的室温值估计分别约为-0.001和30 nm。我们还研究了不同tNb的iSHE作为温度T的函数。在Nb的超导转变温度Tc以上，观察到iSHE的明显的tNb依赖性T演变，而在Tc以下，iSHE电压迅速下降，并且低于我们在较低T下的测量设置的灵敏度。这表明强衰减的准粒子（QP）的电荷不平衡弛豫长度跨Tc，支持的额外调查的iSHE在不同的样品几何形状以及模型计算。我们的发现表明，在开发打算利用量子点介导的自旋-电荷相互转换的超导自旋霍尔器件时，应该仔细考虑。
High spin to charge conversion efficiency is the requirement for the spintronics devices which is governed by spin pumping and inverse spin Hall effect (ISHE). In last one decade, ISHE and spin pumping are heavily investigated in ferromagnet/ heavy metal (HM) heterostructures. Recently antiferromagnetic (AFM) materials are found to be good replacement of HMs because AFMs exhibit terahertz spin dynamics, high spin-orbit coupling, and absence of stray field. In this context we have performed the ISHE in CoFeB/ IrMn heterostructures. Spin pumping study is carried out for $Co_{40}Fe_{40}B_{20} (12…
In an easy-plane antiferromagnet with the Dzyaloshinskii-Moriya interaction (DMI), magnons are subject to an effective spin-momentum locking. An in-plane temperature gradient can generate interfacial accumulation of magnons with a specified polarization, realizing the magnon thermal Edelstein effect. We theoretically investigate the injection and detection of this thermally-driven spin polarization in an adjacent heavy metal with strong spin Hall effect. We find that the inverse spin Hall voltage depends monotonically on both temperature and the DMI but non-monotonically on the hard-axis aniso…
Pure spin current based research is mostly focused on ferromagnet (FM)/heavy metal (HM) system. Because of the high spin orbit coupling (SOC) these HMs exhibit short spin diffusion length and therefore possess challenges for device application. Low SOC (elements of light weight) and large spin diffusion length make the organic semiconductors (OSCs) suitable for future spintronic applications. From theoretical model it is explained that, due to $π$ - $σ$ hybridization the curvature of the C$_{60}$ molecules may increase the SOC strength. Here, we have investigated spin pumping and inverse spin …
