论文标题
在铁磁/抗铁磁/铁磁异质结构中控制垂直磁化的转移垂直磁化偏移
Controlling vertical magnetization shift by spin-orbit torque in ferromagnetic/antiferromagnetic/ferromagnetic heterostructure
论文作者
论文摘要
我们报告了通过PT/CO/IR25MN75/CO HeteroStructure设备中的自旋轨道扭矩（SOT）来控制垂直磁化偏移（VM）和交换偏置。在2个KOE的垂直场中施加40 mA后，观察到伴随的较大相对VM的交换偏置。此外，还观察到了无现场SOT引起的VM和交换偏差的变化，这与有效的内置非平面外场有关，这是由于不等的向上和向下的界面旋转旋转群体。 SOT诱导的平面外界面旋转的开关分数显示了对相对VM的线性依赖性，表明未补偿的固定旋转的数量与开关的界面旋转成正比。我们的发现为电力操纵AFM材料的界面旋转提供了全面的理解。
We report the control of vertical magnetization shift (VMS) and exchange bias through spin-orbit torque (SOT) in Pt/Co/Ir25Mn75/Co heterostructure device. The exchange bias accompanying with a large relative VMS of about 30 % is observed after applying a single pulse 40 mA in perpendicular field of 2 kOe. Furthermore, the field-free SOT-induced variations of VMS and exchange bias is also observed, which would be related to the effective built-in out-of-plane field due to unequal upward and downward interfacial spin populations. The SOT-induced switched fraction of out-of-plane interfacial spins shows a linear dependence on relative VMS, indicating the number of uncompensated pinned spins are proportional to the switched interfacial spins. Our finding offers a comprehensive understanding for electrically manipulating interfacial spins of AFM materials.
