标题： 自旋轨道材料中使用低能垒磁体的校正 显示英文标题

标题： Rectification in Spin-Orbit Materials Using Low Energy Barrier Magnets

摘要： 自旋轨道材料与高能垒（$\sim$40-60$k_BT$）纳米磁铁的耦合引起了越来越多的关注，因为其可以激发新的物理现象并应用于各种自旋电子学领域。我们预测，自旋轨道材料中观察到的自旋动量锁定（SML）与低能垒磁铁（LBM）之间的耦合应该表现出一种独特的多端整流效应，即使通道电流的振幅非常小。基本思路是使用具有面内或垂直各向异性（IMA 或 PMA）的 LBM，以磁化依赖电压的形式测量 SML 通道中由电荷电流引起的自旋积累。LBM 会由于通道中积累的自旋而感受到瞬时的自旋轨道扭矩，这会导致平均磁化跟随电流，从而产生非线性整流效应。我们讨论了这种多端整流的频率范围，这可以通过 LBM 中的角动量守恒来理解。对于来自 SML 通道的固定自旋电流，只要 LBM 在给定体积内的总磁矩相同，无论其具有 IMA 还是 PMA，其频率范围都是一样的。所提出的全金属结构可以用于高度敏感的无源射频检测器以及从弱环境源中收集能量，而在这些情况下，标准技术可能无法工作。 显示英文摘要

摘要： The coupling of spin-orbit materials to high energy barrier ($\sim$40-60 $k_BT$) nano-magnets has attracted growing interest for exciting new physics and various spintronic applications. We predict that a coupling between the spin-momentum locking (SML) observed in spin-orbit materials and low-energy barrier magnets (LBM) should exhibit a unique multi-terminal rectification for arbitrarily small amplitude channel currents. The basic idea is to measure the charge current induced spin accumulation in the SML channel in the form of a magnetization dependent voltage using an LBM, either with an in-plane or perpendicular anisotropy (IMA or PMA). The LBM feels an instantaneous spin-orbit torque due to the accumulated spins in the channel which causes the average magnetization to follow the current, leading to the non-linear rectification. We discuss the frequency band of this multi-terminal rectification which can be understood in terms of the angular momentum conservation in the LBM. For a fixed spin-current from the SML channel, the frequency band is same for LBMs with IMA and PMA, as long as they have the same total magnetic moment in a given volume. The proposed all-metallic structure could find application as highly sensitive passive rf detectors and as energy harvesters from weak ambient sources where standard technologies may not operate.