论文标题
超导体/抗铁磁绝缘子双层中的热诱导自旋扭矩和域壁运动
Thermally induced spin torque and domain wall motion in superconductor/antiferromagnetic insulator bilayers
论文作者
论文摘要
从理论上讲，我们在相邻的自旋分裂超导体层中由热产生的自旋电流引起的抗铁磁绝缘子层中的域壁运动。未补偿的抗铁磁界面界面可实现机制基础的两种至关重要的成分 - 超导体中的自旋分裂和抗fiferromagnet旋转电流的吸收。通过landau-lifshitz-gilbert的描述，使用准经典理论和反铁磁铁来处理超导体，我们发现沿热梯度的域壁传播具有相对较大的速度$ \ sim 100 $ m/s。我们的建议利用了自旋分裂超导体的巨大热响应，以实现大型旋转扭矩，用于驱动域壁和抗铁磁体中的其他自旋纹理。
We theoretically investigate domain wall motion in an antiferromagnetic insulator layer caused by thermally generated spin currents in an adjacent spin-split superconductor layer. An uncompensated antiferromagnet interface enables the two crucial ingredients underlying the mechanism - spin splitting in the superconductor and absorption of spin currents by the antiferromagnet. Treating the superconductor using the quasiclassical theory and the antiferromagnet via Landau-Lifshitz-Gilbert description, we find domain wall propagation along the thermal gradient with relatively large velocities $\sim 100$ m/s. Our proposal exploits the giant thermal response of spin-split superconductors in achieving large spin torques towards driving domain wall and other spin textures in antiferromagnets.
