论文标题
Yttrium铁石榴石厚度对散装声波谐振器中的自旋泵的影响
Yttrium Iron Garnet Thickness Influence on the Spin Pumping in the Bulk Acoustic Wave Resonator
论文作者
论文摘要
声子 - 马格诺互转换在声音谐振器中的特征决定了从YIG泵送到PT的效率，该泵可以通过反旋转厅效应（ISHE）进行电检测到PT。基于以前在与重金属接触（YIG/PT）接触的磁弹性层计算谐振器结构的方法中开发的方法，我们介绍了YIG膜厚度对声学驱动的自旋波的影响的数值计算结果。我们获得了一些YIG膜厚度区域，其DC ISHE电压$ u_ {ishe} $的各种行为。在微米和亚微米厚度下，可以以效率可比性甚至超过主模式的效率生成较高的自旋波（SWR）模式（均匀和奇数）。在第一个SWR的激发下，$ u_ {ishe} $的绝对最大值的厚度约为$ s_1 \约208 $ nm。
The features of phonon-magnon interconversion in acoustic resonator determine the efficiency of spin pumping from YIG into Pt that may be detected electrically through the inverse spin Hall effect (ISHE). Based on the methods developed in previous works for calculating resonator structures with a piezoelectric (ZnO) and a magnetoelastic layer in contact with the heavy metal (YIG/Pt), we present the results of numerical calculations of YIG film thickness influence on acoustically driven spin waves. We obtain some YIG film thickness regions with various behavior of dc ISHE voltage $U_{ISHE}$. At micron and submicron thicknesses, the higher spin wave resonance (SWR) modes (both even and odd) can be generated with efficiency comparable and even exceeding that of the main mode. The absolute maximum of $U_{ISHE}$ is achieved at the thickness about $s_1 \approx 208$ nm under the excitation of the first SWR.
