论文标题
界面dzyaloshinskii-moriya相互作用和旋转轨道扭矩在Au1-XPTX/CO双层中具有不同的界面旋转轨道耦合
Interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque in Au1-xPtx/Co bilayers with varying interfacial spin-orbit coupling
论文作者
论文摘要
界面自旋轨道耦合（SOC）在Dzyaloshinskii-Moriya相互作用（DMI）和阻尼状的旋转轨道扭矩（τDL）中的定量作用一直保持不确定。在这里，我们报告了一个结论性的实验证据，即由于界面轨道杂交的关键作用，界面DMI不一定是界面SOC的线性功能，例如在AU1-XPTX/CO界面上，可以通过强组成（X）依赖性的自旋轨道接近效应来显着调整界面SOC，而无需改变大量SOC和AU1-XPTX层的电负性。我们还发现，AU1-XPTX/CO Bilayers中的τDL与界面SOC的函数差异很大，这表明界面rashba-Edelstein效应没有重要的τdl贡献。
The quantitative roles of the interfacial spin-orbit coupling (SOC) in Dzyaloshinskii-Moriya interaction (DMI) and dampinglike spin-orbit torque (τDL) have remained unsettled after a decade of intensive study. Here, we report a conclusive experiment evidence that, because of the critical role of the interfacial orbital hybridization, the interfacial DMI is not necessarily a linear function of the interfacial SOC, e.g. at Au1-xPtx/Co interfaces where the interfacial SOC can be tuned significantly via strongly composition (x)-dependent spin-orbit proximity effect without varying the bulk SOC and the electronegativity of the Au1-xPtx layer. We also find that τDL in the Au1-xPtx/Co bilayers varies distinctly from the interfacial SOC as a function of x, indicating no important τDL contribution from the interfacial Rashba-Edelstein effect.
