论文标题
旋转大厅效应各向同性的电测量
Electrical measurement of the Spin Hall Effect isotropy in a ferromagnet
论文作者
论文摘要
顺磁金属的自旋依赖性传输特性在旋转下大致不变。相比之下，在铁磁材料中，磁化破坏了旋转对称性，因此预期自旋霍尔效应将变成各向异性。在这里，使用侧向自旋阀的特定设计，我们在NICU和NIPD中的旋转霍尔效应各向异性都在其铁磁和顺磁性阶段中测量。我们表明，铁磁顺序的出现不会导致这些材料中自旋电荷互转换的相当大的各向异性。
The spin-dependent transport properties of paramagnetic metals are roughly invariant under rotation. By contrast, in ferromagnetic materials the magnetization breaks the rotational symmetry, and thus the spin Hall effect is expected to become anisotropic. Here, using a specific design of lateral spin valves, we measure electrically the spin Hall Effect anisotropy in NiCu and NiPd, both in their ferromagnetic and paramagnetic phases. We show that the appearance of the ferromagnetic order does not lead to a sizeable anisotropy of the spin charge interconversion in these materials.
