论文标题
由电压控制的磁各向异性驱动的抗铁磁参数共振
Antiferromagnetic parametric resonance driven by voltage-controlled magnetic anisotropy
论文作者
论文摘要
电压控制的磁各向异性（VCMA）是操纵铁磁状态的低能替代品，最近在抗铁磁铁（AFMS）中也被考虑。在这里，我们从理论上证明了VCMA可用于激发具有垂直向垂直方向异性的易于轴Afms中的线性和参数谐振模式，从而为Neel载体的有效电气控制开辟了道路，并检测到高频动力学。我们的工作带来了两个关键结果：（i）VCMA参数抽水体验所谓的耦合效率的交换增强，因此，比微波磁场或旋转轨道质量或（ii）允许零率参数式的parmentisrians farmins farmins farmins infornical kentrics kentrics kentrics kentrics kentrics kentrics knection knosemists ins face forments knements in forments knements knements ins face forments knements in farmy afts ins facepans ins face facepanss in farminiss insperancians-因此，我们证明了VCMA参数泵送是在垂直易于轴Afms中对AFM顺序相干激发和操纵的最有前途的方法。
Voltage controlled magnetic anisotropy (VCMA) is a low-energy alternative to manipulate the ferromagnetic state, which has been recently considered also in antiferromagnets (AFMs). Here, we theoretically demonstrate that VCMA can be used to excite linear and parametric resonant modes in easy-axis AFMs with perpendicular anisotropy, thus opening the way for an efficient electrical control of the Neel vector, and for detection of high-frequency dynamics. Our work leads to two key results: (i) VCMA parametric pumping experiences the so-called exchange enhancement of the coupling efficiency and, thus, is 1-2 orders of magnitude more efficient than microwave magnetic fields or spin-orbit-torques, and (ii) it also allows for zero-field parametric resonance, which cannot be achieved by other parametric pumping mechanisms in AFMs with out-of-plane easy axis. Therefore, we demonstrate that the VCMA parametric pumping is the most promising method for coherent excitation and manipulation of AFM order in perpendicular easy-axis AFMs.
