论文标题
铁磁/金属界面处的瞬时自旋注入效率
Transient spin injection efficiencies at ferromagnet/metal interfaces
论文作者
论文摘要
跨界面上的旋转注入跨界面驱动的，在飞秒时间尺度上的超短光脉冲构成了一种设计旋转式应用的新方法。该现象的有针对性利用需要了解非平衡自旋注射的效率。通过对Ab-Initio时间依赖性密度功能理论和界面敏感的，时间分辨的非线性光学实验的定量比较，我们确定了跨铁磁/金属界面之间的自旋注入效率（SIE）（SIE），并讨论它们的微观来源，即它们的微观来源，即自旋轨道构造构造和界面电子结构的影响。此外，我们发现可以通过激光脉冲和材料参数（即通量，脉冲持续时间和底物材料）优化SIE。
Spin injection across interfaces driven by ultrashort optical pulses on femtosecond timescales constitutes a new way to design spintronics applications. Targeted utilization of this phenomenon requires knowledge of the efficiency of non-equilibrium spin injection. From a quantitative comparison of ab-initio time-dependent density functional theory and interface-sensitive, time-resolved non-linear optical experiment, we determine the spin injection efficiencies (SIE) across ferromagnetic/metal interfaces and discuss their microscopic origin, i.e. the influence of spin-orbit coupling and the interface electronic structure. Moreover, we find that the SIE can be optimized through laser pulse and materials parameters, namely the fluence, pulse duration, and substrate material.
