论文标题
抗铁磁铁/重金属异质结构中的电子马格诺旋转转换和宏伟的旋转泵
Electron-magnon spin conversion and magnonic spin pumping in antiferromagnet/heavy metal heterostructure
论文作者
论文摘要
我们研究了在有限温度下的抗铁磁铁和重金属界面处的电子和木量旋转之间的交换。基本的物理机制基于与右手和左极化的热镁的创建/an灭相关的自旋扭矩。创建/歼灭过程在很大程度上取决于电子和木片旋转之间的相对方向。对于足够强的自旋传输扭矩（STT），转换过程变为非线性，在AFM中产生非零的净自旋泵送电流，该电流可以在相邻的金属层中检测到。应用外部磁场会使操纵驱动热自旋泵的操纵。我们的理论结果在实验上是可行的，并且与基于抗铁磁铁的自旋装置具有直接相关性。
We study the exchange between electron and magnon spins at the interface of an antiferromagnet and a heavy metal at finite temperatures. The underlying physical mechanism is based on spin torque associated with the creation/annihilation of thermal magnons with right-hand and left-hand polarization. The creation/annihilation process depends strongly on the relative orientation between the polarization of the electron and the magnon spins. For a sufficiently strong spin transfer torque (STT), the conversion process becomes nonlinear, generating a nonzero net spin pumping current in the AFM that can detected in the neighboring metal layer. Applying an external magnetic field renders possible the manipulation of the STT driving thermal spin pumping. Our theoretical results are experimentally feasible and are of a direct relevance to antiferromagnet-based spintronic devices.
