论文标题
磁各向异性的连续电气操纵和范德华铁磁装置中的自旋翻转
Continuous Electrical Manipulation of Magnetic Anisotropy and Spin Flopping in van der Waals Ferromagnetic Devices
论文作者
论文摘要
控制铁磁材料的磁各向异性在磁开关设备和旋转器应用中起关键作用。具有不同磁各向异性几何形状（面内或面外方向）的自旋轨道扭矩设备的实例已通过用于扩展设备功能的新型磁化开关机制证明。通常，铁磁材料中的固有磁各向异性在固定的方向上没有变化，因此很难实现多功能设备。因此，高度期望铁磁材料中磁各向异性的连续调节，但仍然具有挑战性。在这里，我们通过结合了依赖角度依赖的异常效果和定量的stoner-wohlfarth分析的测量值，证明了从平面外到倾斜到倾斜到倾斜到倾斜的磁性各向异性转变。磁性易于轴通过门控或温度调制连续旋转在自旋式途径中。这种观察为探索磁化开关机制和实现新的Spintronic功能提供了新的途径。
Controlling the magnetic anisotropy of ferromagnetic materials plays a key role in magnetic switching devices and spintronic applications. Examples of spin-orbit torque devices with different magnetic anisotropy geometries (in-plane or out-of-plane directions) have been demonstrated with novel magnetization switching mechanisms for extended device functionalities. Normally, the intrinsic magnetic anisotropy in ferromagnetic materials is unchanged within a fixed direction, and thus, it is difficult to realize multifunctionality devices. Therefore, continuous modulation of magnetic anisotropy in ferromagnetic materials is highly desired but remains challenging. Here, we demonstrate a gate-tunable magnetic anisotropy transition from out-of-plane to canted and finally to in-plane in layered Fe$_5$GeTe$_2$ by combining the measurements of the angle-dependent anomalous Hall effect and magneto-optical Kerr effect with quantitative Stoner-Wohlfarth analysis. The magnetic easy axis continuously rotates in a spin-flop pathway by gating or temperature modulation. Such observations offer a new avenue for exploring magnetization switching mechanisms and realizing new spintronic functionalities.
