期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 46, 期 6, 页码 1331-1333出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2010.2041904
关键词
Ferromagnetic resonance; spin currents; spin-Hall effect; spin pumping
资金
- MEXT, Japan [19048028]
- NEDO, Japan
- TRF, Japan
- Grants-in-Aid for Scientific Research [19048028] Funding Source: KAKEN
The inverse spin-Hall effect (ISHE), conversion of spin currents into electric voltage, was observed in Ni(81)Fe(19)/N (N = Pt, Pd, Ag, and Au) films using the spin pumping at room temperature. The spin pumping driven by magnetization precession in the Ni(81)Fe(19) layer injects a spin current into the layer, giving rise to an electric potential difference between the edges of the layer via ISHE. We found resonant electromotive force signals at the ferromagnetic resonance condition in the Ni(81)Fe(19) films. The spectral shape of the electromotive force signals are well reproduced by simple Lorentz functions, which is consistent with the prediction of ISHE induced by the spin pumping. The ISHE signal was observed to typically be enhanced in the Ni(81)Fe(19) system, showing the crucial role of the spin-orbit interaction in ISHE induced by the spin pumping.
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