论文标题
Lif-lif插入的Fe/Mgo界面中增强界面垂直磁各向异性的起源
The origin of enhanced interfacial perpendicular magnetic anisotropy in LiF-inserted Fe/MgO interface
论文作者
论文摘要
FE/MGO界面是旋转三位型的必不可少的成分，因为它显示了巨大的隧穿磁磁力和强烈的垂直磁各向异性（PMA）。最近的一项研究表明，FE和MGO层之间的超薄LIF层的插入显着增强了PMA。在这项研究中，我们对FE/LIF/MGO多层测量进行X射线磁圆二色性测量，以揭示PMA增强的起源。我们发现LIF插入增加了轨道磁臂各向异性，从而增加了磁各向异性能量。我们将这种轨道磁性 - 力 - 触手体增强的起源归因于更强的电子定位和电子电子相关性或更好的界面质量，缺陷较少。
The Fe/MgO interface is an essential ingredient in spintronics as it shows giant tunneling magnetoresistance and strong perpendicular magnetic anisotropy (PMA). A recent study demonstrated that the insertion of an ultra-thin LiF layer between the Fe and MgO layers enhances PMA significantly. In this study, we perform x-ray magnetic circular dichroism measurements on Fe/LiF/MgO multilayers to reveal the origin of the PMA enhancement. We find that the LiF insertion increases the orbital-magnetic-moment anisotropy and thus the magnetic anisotropy energy. We attribute the origin of this orbital-magnetic-moment-anisotropy enhancement to the stronger electron localization and electron-electron correlation or the better interface quality with fewer defects.
