论文标题
dzyaloshinsky-Moriya Itestootions诱导的W（110）的超薄FE膜中的自旋重新定位过渡
Spin reorientation transition in an ultrathin Fe film on W(110) induced by Dzyaloshinsky-Moriya interactions
论文作者
论文摘要
控制磁矩的首选方向对于基于超薄膜和异质结构的自旋设备设计至关重要。随着膜的厚度或温度的升高，通常会从表面优先选择的平面外向和界面能量贡献对体积各向异性术语偏爱的面内对齐方式的平面外向进行重新定位。我们使用基于Ab Intible计算的旋转模型的旋转模型来研究Wemper驱动的自旋重新定向转变W（110）在W（110）上的Fe（110）（110）中，发现该过渡仅在Dzyaloshinsky--Moriya相互作用（DMI）的情况下发生。这表明手性DMI不仅区分不同旋转感官的非共线自旋结构，而且还影响了共线磁构型的磁取向。
Controlling the preferred direction of the magnetic moments is essential for the design of spintronic devices based on ultrathin films and heterostructures. As the film thickness or the temperature is increased, the easy anisotropy axis is typically reoriented from an out-of-plane direction preferred by surface and interface energy contributions to an in-plane alignment favored by the volume anisotropy terms. We study the temperature-driven spin reorientation transition in two atomic layers of Fe on W(110) using well-tempered metadynamics simulations based on a spin model parametrized by ab initio calculations and find that the transition only takes place in the presence of the Dzyaloshinsky--Moriya interaction (DMI). This demonstrates that the chiral DMI does not only differentiate between noncollinear spin structures of different rotational senses, but it also influences the magnetic orientation of collinear magnetic configurations.
