论文标题
磁绝缘子通道中的相干磁杆诱导的结构域壁运动
Coherent magnon-induced domain wall motion in a magnetic insulator channel
论文作者
论文摘要
推进自旋波器设备的开发需要高质量的低阻尼磁性材料，其中镁旋转电流可以有效地传播并与局部磁纹理有效相互作用。我们表明，磁性域壁（DW）可以在Bi-Doped Yttrium-Iron-Garnet（Biyig）的垂直磁化通道中调节自旋波传输。相反，我们证明了镁旋转电流可以通过Magnon自旋转移扭矩在Biyig通道设备中驱动DW运动。 DW可以可靠地在零施加的磁场上可靠地移动15 um的磁场，该磁通旋转电流由RF脉冲激发的短时间短达1 ns。驱动DW运动所需的能量是比金属系统报告的数量级小。这些结果促进了低速传动 - 能量宏伟的宏伟设备和电路，其中磁性结构域可以通过在磁道内流动的镁旋转电流有效地重新配置。
Advancing the development of spin-wave devices requires high-quality low-damping magnetic materials where magnon spin currents can propagate efficiently and interact effectively with local magnetic textures. We show that magnetic domain walls (DW) can modulate spin-wave transport in perpendicularly magnetized channels of Bi-doped yttrium-iron-garnet (BiYIG). Conversely, we demonstrate that the magnon spin current can drive DW motion in the BiYIG channel device by means of magnon spin-transfer torque. The DW can be reliably moved over 15 um distances at zero applied magnetic field by a magnon spin current excited by an RF pulse as short as 1 ns. The required energy for driving DW motion is orders of magnitude smaller than those reported for metallic systems. These results facilitate low-switching-energy magnonic devices and circuits where magnetic domains can be efficiently reconfigured by magnon spin currents flowing within magnetic channels.
