Vector spectroscopy for spin pumping

J. Lustikova, Y. Shiomi, E. Saitoh

研究成果: ジャーナルへの寄稿学術論文査読

13 被引用数 (Scopus)


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 in Ni81Fe19 and Ni81Fe19/Pt films 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 Ni81Fe19/Pt, only that dc voltage component which includes ISHE is more than five times larger than purely galvanomagnetic components. This is corroborated by results on La0.67Sr0.33MnO3/Pt samples, demonstrating universality of this method.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版ステータス出版済み - 2015 12月 31


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