论文标题
量化旋转电流介导的功率流动过程
Quantifying power flow processes mediated by spin currents
论文作者
论文摘要
通过实现从微波吸收到电动力（EMF）输出的每个工艺的实验评估，检查了由双层设备中自旋电流介导的功率流动过程。 EMF输出期间薄FM层的铁磁共振（FMR）的吸收功率是使用天线探针系统在Operando中直接测量的。通过自旋泵化，通过旋转泵的传递效率从EMF光谱的严格线宽评估中估算出来。通过平行电路，使用分析模型，在160MW微波辐照下，通过反旋转厅效应向外部负载的最大传递效率确定为4.2x10^（-8）。发现降低效率的主要因素是NM层和界面损失的低电阻率。这些量化是考虑自旋电流介导的自旋能有效转移的第一步。
The power flow process mediated by spin current in the bilayer device consisting of ferromagnetic metal (FM) and non-magnetic metal (NM) layers is examined by realizing experimental evaluations for each process from the microwave absorption to electromotive force (EMF) output. The absorption power by ferromagnetic resonance (FMR) of the thin FM layer during the EMF output is directly measured in operando using an antenna probe system. The transfer efficiency of the absorption power into the NM layer by spin pumping is estimated from strict linewidth evaluation of EMF spectra. The maximum transfer efficiency of the spin pumping power to the external load via the inverse spin Hall effect is determined to be 4.2X10^(-8) under 160mW microwave irradiation using an analysis model assuming a parallel circuit. The main factors reducing the efficiency are found to be low resistivity of the NM layer and the interface loss. These quantifications are important as a first step to consider the efficient transfer of spin energy mediated by spin currents.
