Vector spectroscopy for spin pumping
Vector spectroscopy for spin pumping
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用于自旋泵浦的矢量光谱
DOI：
10.1103/physrevb.92.224436
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发表时间：
2015
影响因子：
3.7
通讯作者：
and E.Saitoh,
中科院分区：
文献类型：
--
作者：
J.Lustikova;Y.Shiomi;and E.Saitoh,
本文提出了一种通过测量两个正交方向上的直流电动势来分离金属双层膜自旋泵浦实验中的逆自旋霍尔效应（ISHE）和电磁效应的方法。计算了微波谐振腔中铁磁共振时薄膜纵向和霍尔方向上感应的直流电压，预测了ISHE和电流磁效应的贡献，即，各向异性磁电阻和反常霍尔效应在改变外场相对于膜平面的方向时表现出明显的信号对称性以及角度依赖性。根据上的测量，只有包括ISHE的直流电压分量比纯电流磁分量大五倍以上。样品分析结果证实了这一点，证明了该方法的普适性。
We propose a method to separate the inverse spin Hall effect (ISHE) from galvanomagnetic effects in spin pumping experiments on metallic bilayer systems by measuring the dc electromotive force in two orthogonal directions. Calculations of dc voltages in longitudinal and Hall directions induced inandfilms at ferromagnetic resonance in a microwave cavity predict that contributions from ISHE and from the galvanomagnetic effects, i.e., the anisotropic magnetoresistance and the anomalous Hall effect, exhibit distinct signal symmetry as well as angular dependence when changing the direction of the external field with respect to the film plane. According to measurements on, only that dc voltage component which includes ISHE is more than five times larger than purely galvanomagnetic components. This is corroborated by results onsamples, demonstrating universality of this method.
影响因子：
3.7
作者：
Obstbaum, M.;Haertinger, M.;Woltersdorf, G.
通讯作者：
Woltersdorf, G.
影响因子：
3.7
作者：
Ando, K.;Kajiwara, Y.;Saitoh, E.
通讯作者：
Saitoh, E.
影响因子：
44.1
作者：
Nagaosa, Naoto;Sinova, Jairo;Ong, N. P.
通讯作者：
Ong, N. P.