论文标题
L10 FEPT单层中依赖疾病依赖的自旋轨道扭矩
Disorder dependent spin-orbit torques in L10 FePt single layer
论文作者
论文摘要
我们报告了垂直磁化的Leptibled磁化的单层中的自旋轨道扭矩（SOT），这受到障碍的显着影响。最近，已经研究了L10-pept单层中的自诱导的SOT，这归因于沿膜正常方向的组成梯度。但是，尚未完全研究确定的磁化切换机制。随着生长温度的变化，我们已经准备好具有相同厚度（3 nm）但不同无序的单层Fept单层。我们发现，几乎完全的磁化切换仅发生在更无序的膜中，并且随着L10排序的增加，磁化的切换比变小。在先前的研究中得出有效自旋扭矩场的方法无法完全解释自旋当前的一代和L10型单层中的自我诱导的SOT。结合磁光学KERR效应显微镜和异常的HALL效应测量值，我们得出结论，该疾病应确定域壁的形成以及自旋电流的形成。
We report spin-orbit torques (SOT) in L10-ordered perpendicularly magnetized FePt single layer, which is significantly influenced by disorder. Recently, self-induced SOT in L10-FePt single layer has been investigated, which is ascribed to the composition gradient along the film normal direction. However, the determined mechanisms for magnetization switching have not been fully studied. With varying growth temperatures, we have prepared FePt single layers with same thickness (3 nm) but with different disordering. We have found that nearly full magnetization switching only happens in more disordered films, and the magnetization switching ratio becomes smaller as increasing L10 ordering. The method for deriving effective spin torque fields in the previous studies cannot fully explain the spin current generation and self-induced SOT in L10-FePt single layer. Combined with Magneto-Optical Kerr Effect microscopy and anomalous Hall effect measurements, we concluded that the disorder should determine the formation of domain walls, as well as the spin current generation.
