论文标题
材料缺陷对纳米磁体中共振的自旋波模式的影响
The effect of material defects on resonant spin wave modes in a nanomagnet
论文作者
论文摘要
我们从理论上研究了椭圆形纳米磁体中的共振自旋波模式如何受到制造缺陷的影响，例如局部厚度较小的变化。我们的结果表明，这种性质的缺陷很容易由制造过程引起，或者有时在制造过程中故意引入，会大大改变频率，频率的磁场依赖性以及谐振自旋波模式的功率和相位剖面。它们还可以产生新的谐振模式并淬灭现有的模式。所有这些都具有基于自旋波的多设备电路的重要分析，例如用于神经形态计算的相位锁定振荡器，其中缺陷引起的设备对设备变异性可以抑制。
We have theoretically studied how resonant spin wave modes in an elliptical nanomagnet are affected by fabrication defects, such as small local thickness variations. Our results indicate that defects of this nature, which can easily result from the fabrication process, or are sometimes deliberately introduced during the fabrication process, will significantly alter the frequencies, magnetic field dependence of the frequencies, and the power and phase profiles of the resonant spin wave modes. They can also spawn new resonant modes and quench existing ones. All this has important ramifications for multi-device circuits based on spin waves, such as phase locked oscillators for neuromorphic computing, where the device-to-device variability caused by defects can be inhibitory.
