论文标题
提高自旋发电机/磁铁/氧化物超晶格的自旋轨道扭矩效率
Boosting spin-orbit torque efficiency in spin-current generator/magnet/oxide superlattices
论文作者
论文摘要
磁性材料的有效操纵对于旋转三位型至关重要。在自旋电流发电机/磁铁双层中，每个磁层厚度的自旋轨道效率与磁层厚度呈现尺度，从而导致磁层厚度较大的应用的大量功率增加。在这里，我们开发了一个3D自旋轨道材料方案，其中可以通过堆叠[自旋 - 电流发电机/磁铁/氧化物] N超晶格来显着提高自旋扭矩效率，其中氧化物层破坏了反演对称性。相反，旋转扭矩在[自旋 - 电流发电机/磁铁] N超级晶格中缺乏反转对称性断裂。这些结果进一步了解了对磁性多层中自旋轨道扭矩的理解，并建立了自旋电流发生器/磁铁/氧化物超晶格，作为发展高能效率，高含量和高密度的自旋记忆和计算的有利砖。
Efficient manipulation of magnetic materials is essential for spintronics. In spin-current generator/magnet bilayers, the efficiency of spin-orbit torques per magnetic layer thickness scales inversely with the magnetic layer thickness, leading to considerable power increase in applications with large magnetic layer thickness. Here, we develop a 3D spin-orbit material scheme in which the spin torque efficiency can be remarkably boosted up by stacking [spin-current generator/magnet/oxide]n superlattices, with the oxide layers breaking the inversion symmetry. In contrast, the spin torque diminishes in [spin-current generator/magnet]n superlattices lacking inversion symmetry breaking. These results advances the understanding of spin-orbit torques in magnetic multilayers and establishes spin-current generator/magnet/oxide superlattices as advantageous bricks for development of high energy-efficiency, high-endurance, and high-density spintronic memory and computing.
