论文标题
分子自组装揭示的表面Rashba-Edelstein自旋轨道扭矩
Surface Rashba-Edelstein Spin-Orbit Torque Revealed by Molecular Self-Assembly
论文作者
论文摘要
我们报告了源自表面Rashba-Edelstein效应的自旋轨道扭矩（SOT）的观察。我们发现，可以通过PT表面上的分子自组装来操纵原型自旋轨道系统（PT/CO双层）中的SOT。这证明了RASHBA自旋轨道耦合在Pt表面产生了相当大的SOT，该SOT已被强大的散装和界面自旋 - 轨道耦合所隐藏。我们表明，表面Rashba-Edelstein SOT的分子调整与密度功能理论计算一致。这些结果说明了表面自旋轨道耦合在SOT生成中的关键作用，从而改变了金属自旋轨道设备的景观。
We report the observation of a spin-orbit torque (SOT) originating from the surface Rashba-Edelstein effect. We found that the SOT in a prototypical spin-orbitronic system, a Pt/Co bilayer, can be manipulated by molecular self-assembly on the Pt surface. This evidences that the Rashba spin-orbit coupling at the Pt surface generates a sizable SOT, which has been hidden by the strong bulk and interface spin-orbit coupling. We show that the molecular tuning of the surface Rashba-Edelstein SOT is consistent with density functional theory calculations. These results illustrate the crucial role of the surface spin-orbit coupling in the SOT generation, which alters the landscape of metallic spin-orbitronic devices.
