论文标题
可调和增强的Rashba自旋轨道耦合
Tunable and Enhanced Rashba Spin-Orbit Coupling in Iridate-Manganite Heterostructures
论文作者
论文摘要
调整自旋轨道相互作用和库仑排斥是观察外来物理现象的关键特征，例如磁各向异性和氧化物界面处的拓扑自旋纹理。我们的研究提出了一个新的平台，用于通过调整LAMNO3生长条件来控制LAMNO3/SRIRO3（3D-5D氧化物）接口处的磁性和自旋轨道耦合，从而控制晶格位移和自旋相关的界面界面偶数，从而通过电荷传递通过电荷传递。我们报告了lamno3/sriro3双层中的可调且增强的界面诱导的Rashba自旋轨道耦合和Elliot-YAF-YAF-YAF-YAF-YAF-YEAF SPIN弛豫机构，随着LAMNO3的基本磁性顺序变化。与先前报道的SRIRO3层相比，我们还观察到LAMNO3/SRIRO3的自旋轨道偶联强度增强。 X射线光谱测量揭示了MN的定量价及其对电荷转移的影响。此外，我们进行了依赖角度的磁倍率测量值，在反映LAMNO3的磁性时显示了SRIRO3中磁接近效应的特征。因此，我们的工作展示了一条新的途径，可以在3D-5D氧化物界面中设计界面引起的RASHBA自旋轨道耦合和磁接近效应，这使SRIRO3成为Spintronics应用的理想候选者。
Tailoring spin-orbit interactions and Coulomb repulsion are the key features to observe exotic physical phenomena such as magnetic anisotropy and topological spin texture at oxide interfaces. Our study proposes a novel platform for engineering the magnetism and spin-orbit coupling at LaMnO3/SrIrO3 (3d-5d oxide) interfaces by tuning the LaMnO3 growth conditions which controls the lattice displacement and spin-correlated interfacial coupling through charge transfer. We report on a tunable and enhanced interface-induced Rashba spin-orbit coupling and Elliot-Yafet spin relaxation mechanism in LaMnO3/SrIrO3 bilayer with change in the underlying magnetic order of LaMnO3. We also observed enhanced spin-orbit coupling strength in LaMnO3/SrIrO3 compared to previously reported SrIrO3 layers. The X-Ray spectroscopy measurement reveals the quantitative valence of Mn and their impact on charge transfer. Further, we performed angle-dependent magnetoresistance measurements, which show signatures of magnetic proximity effect in SrIrO3 while reflecting the magnetic order of LaMnO3. Our work thus demonstrates a new route to engineer the interface induced Rashba spin-orbit coupling and magnetic proximity effect in 3d-5d oxide interfaces which makes SrIrO3 an ideal candidate for spintronics applications.
