Spin rectification induced by spin Hall magnetoresistance at room temperature

We have experimentally and theoretically investigated the dc voltage generation in the heterostructure of Pt and yttrium iron garnet under the ferromagnetic resonance. Besides a symmetric Lorenz line shape dc voltage, an antisymmetric Lorenz line shape dc voltage is observed in field scan, which can...

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Bibliographic Details
Published in:Applied physics letters 2016-09, Vol.109 (11)
Main Authors: Wang, P., Jiang, S. W., Luan, Z. Z., Zhou, L. F., Ding, H. F., Zhou, Y., Tao, X. D., Wu, D.
Format: Article
Language:English
Subjects:
Applied physics
Dependence
Electric potential
Electronics
Ferromagnetic resonance
Ferromagnetism
Heterostructures
Line shape
Magnetoresistance
Magnetoresistivity
Pumping
Room temperature
Yttrium
Yttrium-iron garnet
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Summary:We have experimentally and theoretically investigated the dc voltage generation in the heterostructure of Pt and yttrium iron garnet under the ferromagnetic resonance. Besides a symmetric Lorenz line shape dc voltage, an antisymmetric Lorenz line shape dc voltage is observed in field scan, which can solely originate from the spin rectification effect due to the spin Hall magnetoresistance. The angular dependence of the dc voltage is theoretically analyzed by taking into account both the spin pumping and the spin rectification effects. We find that the experimental results are in excellent agreement with the theoretical model, further identifying the spin Hall magnetoresistance origin of the spin rectification effect. Moreover, the spin pumping and the spin rectification effects are quantitatively separated by their different angular dependence at particular experimental geometry.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4962895