发表机构
CIC nanoGUNE BRTA; University of the Basque Country (UPV/EHU); Univ. Grenoble Alpes, CEA, CNRS, Grenoble-INP, SPINTEC; IKERBASQUE, Basque Foundation for Science（纳米技术研究中心 nanoGUNE; 巴斯克大学; 格勒诺布尔阿尔卑斯大学、法国原子能和替代能源委员会、法国国家科学研究中心、格勒诺布尔国立理工学院、自旋技术中心; 伊克尔巴斯克，巴斯克科学基金会）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究在垂直磁化的Co基多层膜中，通过非局域横向自旋阀结构首次实验观测到磁性自旋霍尔效应及其逆效应，其自旋霍尔角为(3.8±0.6)%，且可通过磁化翻转进行调控，为铁磁体中的自旋电荷转换提供了新机制。
AI 中文摘要
传统的自旋霍尔效应产生的自旋电流，其流动方向、自旋极化方向和驱动电场三者相互垂直。磁有序打破了这一对称性限制，使得自旋电导率张量中出现了额外的、时间反演对称性为奇的分量，从而产生了磁性自旋霍尔效应（MSHE）。这些分量还将产生的自旋极化与磁有序耦合起来，提供了传统自旋霍尔效应所不具备的调控自由度。尽管MSHE已在反铁磁体中被观测到，但在传统铁磁体中的实验确认仍然难以实现。在此，我们利用非局域横向自旋阀结构，在垂直磁化的Co基多层膜中电学地识别出了MSHE及其逆效应。多层膜磁化方向的翻转会翻转MSHE和磁性逆自旋霍尔信号，揭示了它们的时间反演对称性为奇的特征以及磁化调控特性。相比之下，在同一器件中测量的传统自旋霍尔和逆自旋霍尔信号在磁化翻转时保持不变，这与它们的时间反演对称性为偶的特征一致。我们获得的磁性自旋霍尔角为θ_MSH = (3.8 ± 0.6)%，其大小与自旋电子学器件中常用的重金属（如Pt）的自旋霍尔角相当。这些结果确立了MSHE作为传统铁磁体中一种可观的、可通过磁化切换的自旋-电荷相互转换机制。
英文摘要
The conventional spin Hall effect generates spin currents whose flow direction, spin polarization, and driving electric field are mutually perpendicular. Magnetic order lifts this symmetry restriction and enables additional time-reversal-symmetry-odd components of the spin-conductivity tensor, giving rise to the magnetic spin Hall effect (MSHE). These components also couple the generated spin polarization to the magnetic order, providing a degree of control absent in the conventional spin Hall effect. Although the MSHE has been observed in antiferromagnets, its experimental identification in conventional ferromagnets has remained elusive. Here, using a non-local lateral spin-valve geometry, we electrically identify the MSHE and its reciprocal effect in a perpendicularly magnetized Co-based multilayer. Reversal of the multilayer magnetization reverses the MSHE and magnetic inverse spin Hall signals, revealing their time-reversal-symmetry-odd character and magnetization control. By contrast, the conventional spin Hall and inverse spin Hall signals measured in the same devices remain unchanged under magnetization reversal, consistent with their time-reversal-symmetry-even character. We obtain a magnetic spin Hall angle of $θ_{\mathrm{MSH}} = (3.8 \pm 0.6)\%$, comparable in magnitude to the spin Hall angle of heavy metals commonly used in spintronic devices, such as Pt. These results establish the MSHE as a sizable, magnetically switchable spin-charge interconversion mechanism in conventional ferromagnets.
Comments10 pages, 4 figures, and Supplementary information
