Spin wave resonance detection using magnetic tunnel junction structure
Spin wave resonance detection using magnetic tunnel junction structure
复制标题
使用磁隧道结结构的自旋波共振检测
DOI：
10.1063/1.3658804
复制
发表时间：
2011-11-07
影响因子：
4
通讯作者：
Xiao, John Q.
中科院分区：
文献类型：
--
作者：
Bi, Chong;Fan, Xin;Xiao, John Q.
我们已经证明，自旋波共振的坡莫合金微带线可以检测到基于磁性隧道结结构的电气方法。该检测方法具有较高的空间分辨率和灵敏度。在坡莫合金微带线中，可以清楚地观察到偶数和奇数自旋波谐振模。在每个谐振模式下，自旋波感应电压与输入微波功率成正比。使用量子化偶极交换自旋波共振模型的数据分析表明，自旋波的边缘钉扎敏感地依赖于自旋波模式的阶数，以及高阶模式的激发频率。
We have demonstrated that spin wave resonance in a permalloy microstrip can be detected by an electrical method based on magnetic tunnel junction structures. The detection method promises high spatial resolution and sensitivity. Both even and odd spin wave resonance modes can be clearly observed in a permalloy microstrip. The spin wave induced voltage is proportional to the input microwave power at each resonance mode. Data analysis using the model of quantized dipole-exchange spin wave resonance suggests the edge pinning of spin wave sensitively depends on the order of the spin wave mode, as well as on the excitation frequency for modes of the higher order.