论文标题
金属 - 绝缘子双层中的自旋蓄能诱导的磁纹理
Spin-accumulation induced magnetic texture in a metal-insulator bilayer
论文作者
论文摘要
我们考虑旋转金属中自旋积累对相邻磁绝缘体中磁性静态和动力学的影响。特别是，我们专注于自旋积累与磁绝缘体的易于轴之间的arbinal角。基于补充了磁性电路理论的Landau-Lifshitz-Gilbert现象学，我们发现磁纹理扭曲成稳定的构型，事实证明，该构型由虚拟或图像，域壁构型（即，即Ferromagnet外部的域壁）描述。我们表明，即使自旋积累垂直于各向异性轴，磁纹理也会形成与自旋积聚的分量，以实现足够大的自旋偏置。该平行成分的出现会导致自旋霍尔磁磁性和非局部木元转运的阈值行为。该阈值可用于设计新型的自旋和宏伟的设备，可以在没有外部磁场的情况下操作。
We consider the influence of a spin accumulation in a normal metal on the magnetic statics and dynamics in an adjacent magnetic insulator. In particular, we focus on arbitary angles between the spin accumulation and the easy-axis of the magnetic insulator. Based on Landau-Lifshitz-Gilbert phenomenology supplemented with magnetoelectronic circuit theory, we find that the magnetic texture twists into a stable configuration that turns out to be described by a virtual, or image, domain wall configuration, i.e., a domain wall outside the ferromagnet. We show that even when the spin accumulation is perpendicular to the anisotropy axis, the magnetic texture develops a component parallel to the spin accumulation for sufficiently large spin bias. The emergence of this parallel component gives rise to threshold behavior in the spin Hall magnetoresistance and nonlocal magnon transport. This threshold can be used to design novel spintronic and magnonic devices that can be operated without external magnetic fields.
