Electric detection of spin wave resonance using inverse spin-Hall effect

Ando, K.; Ieda, J.; Sasage, K.; Takahashi, S.; Maekawa, S.; Saitoh, E.
June 2009
Applied Physics Letters;6/29/2009, Vol. 94 Issue 26, p262505
Academic Journal
Spin wave resonance in Ni81Fe19/Pt thin wire arrays has been investigated using the inverse spin-Hall effect (ISHE). The spin wave in the Ni81Fe19 layer drives spin pumping, generation of spin currents from magnetization precession, and the pumped spin current is converted into a charge current by ISHE in the Pt layer. We found an electromotive force transverse to the spatial and the spin-polarization directions of the spin current. The experimental results indicate that the amplitude of the electromotive force is proportional to the spin wave resonance absorption intensity, enabling the electric measurement of spin wave resonance in nanostructured magnetic systems.


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