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Comparison of the use of NiFe and CoFe as electrodes for metallic lateral spin valves

机译:将NiFe和CoFe用作金属侧向旋转阀的电极的比较

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Spin injection and detection in Co60Fe40-based all-metallic lateral spin valves have been studied at both room and low temperatures. The obtained spin signals amplitudes have been compared to those of identical Ni80Fe20-based devices. The replacement of Ni80Fe20 by CoFe allows increasing the spin signal amplitude by up to one order of magnitude, thus reaching 50 m Omega at room temperature. The spin signal dependence with the distance between the ferromagnetic electrodes has been analyzed using both a 1D spin-transport model and finite element method simulations. The enhancement of the spin signal amplitude when using CoFe electrodes can be explained by a higher effective polarization.
机译:已经在室温和低温下研究了基于Co60Fe40的全金属侧向旋转阀中的旋转注入和检测。已将获得的自旋信号幅度与相同的基于Ni80Fe20的器件的自旋信号幅度进行了比较。用CoFe替代Ni80Fe20可使自旋信号幅度增加一个数量级,从而在室温下达到50 mΩ。使用一维自旋传输模型和有限元方法仿真,都分析了自旋信号与铁磁电极之间距离的依赖性。使用CoFe电极时自旋信号幅度的增强可以通过较高的有效极化来解释。

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