Electrical detection of internal dynamical properties of domain walls
Electrical detection of internal dynamical properties of domain walls
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DOI：
10.1103/physrevb.89.104412
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发表时间：
2014-03
影响因子：
3.7
通讯作者：
S. Sangiao;M. Viret
中科院分区：
文献类型：
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作者：
S. Sangiao;M. Viret
我们在这里报告的铁磁共振的电检测在一个缺口的Py条纹使用的自旋整流效应。锁定检测技术用于测量施加射频场时产生的整流艾德电压。在场扫描过程中观察到的与畴壁存在相关的多个峰，在动态微磁模拟的帮助下得到了正确的艾德识别。发现在低于6GHz的任何频率下，磁畴壁内的某些非均匀磁化的特定区域可以找到谐振条件，并通过电路中的感应电流的整流产生电压。
We report here on the electrical detection of the ferromagnetic resonance in a notched Py stripe using the spin rectification effect. A lock-in detection technique is used to measure the rectified voltage generated when applying a radio-frequency field. The multiple peaks associated with the presence of a domain wall, observed during field scans, are properly identified with the help of dynamical micromagnetic simulations. It is found that at any frequency below 6 GHz some specific areas of the inhomogeneous magnetization within the domain wall can find a resonant condition and generate a voltage by rectification of the induction currents in the circuit.