论文标题
在室温下诱导Skyrmion flop转换$ _8 $ zn $ _8 $ _4 $ _4 $
Inducing Skyrmion Flop Transitions in Co$_8$Zn$_8$Mn$_4$ at Room Temperature
论文作者
论文摘要
磁性天空是拓扑保护的自旋纹理，在温度和场的正确条件下，在某些非中心对称的铁磁体中表现出来。在薄膜天际宿主中，消灭效果与几何限制相结合可能会导致两种不同类型的自旋纹理：在膜平面（IP）中具有对称轴的旋转纹理（IP）和那些指向平面外（OOP）的轴线。在这里，我们提供了Lorentz传输电子显微镜证据，并结合数值建模，显示了IP和OOP Skyrmions在CO $ _8 $ _8 $ ZN $ _8 $ _8 $ _8 $ _4 $ _4 $之间的失败过渡。我们表明，这种天空插槽转变可通过外部场相对于膜正常的角度控制，我们说明了这种过渡如何取决于厚度。最后，我们提出了一种使用此过渡细节的天空写作设备。
Magnetic skyrmions are topologically-protected spin textures that manifest in certain non-centrosymmetric ferromagnets under the right conditions of temperature and field. In thin film skyrmion hosts, demagnetization effects combined with geometric confinement can result in two distinct types of spin textures: those with their axis of symmetry in the plane of the film (IP) and those with their axis pointing out-of-plane (OOP). Here we present Lorentz transmission electron microscopy evidence in conjunction with numerical modeling showing a flop transition between IP and OOP skyrmions in Co$_8$Zn$_8$Mn$_4$ at room temperature. We show that this skyrmion flop transition is controllable via the angle of the external field relative to the film normal and we illustrate how this transition depends on thickness. Finally, we propose a skyrmion-writing device that utilizes the details of this transition.
