TY - JOUR
T1 - Spin-Seebeck effects in Ni81 Fe19 / Pt films
AU - Uchida, K.
AU - Ota, T.
AU - Harii, K.
AU - Takahashi, S.
AU - Maekawa, S.
AU - Fujikawa, Y.
AU - Saitoh, E.
N1 - Funding Information:
The authors thank G. E. W. Bauer, B. J. van Wees, J. Ieda, W. Koshibae, G. Tatara, S. Murakami, K. M. Itoh, and M. Matoba for valuable discussions. This work was supported by a Grant-in-Aid for Scientific Research in Priority Area ‘Creation and control of spin current’ (19048028) from MEXT, Japan, a Grant-in-Aid for Scientific Research (A) from MEXT, Japan, the global COE for the ‘Materials integration international center of education and research’ from MEXT, Japan, a Grant for Industrial Technology Research from NEDO, Japan, and a Fundamental Research Grant from TRF, Japan.
PY - 2010/3
Y1 - 2010/3
N2 - The spin-Seebeck effect (SSE) converts a heat current into a spin current, a flow of spin angular momentum, and spin voltage, the driving force for nonequilibrium spin currents, in a ferromagnetic metal. In this study, the SSE in a ferromagnetic Ni81Fe19 film has been investigated by means of the inverse spin-Hall effect (ISHE) in a Pt film at room temperature. The experimental results measured in the Ni81Fe19/Pt system show that the sign of the thermally induced spin voltage is reversed between the higher- and lower-temperature ends of the Ni81Fe19 film. The ISHE in the Pt film allows us to detect the SSE signal with high sensitivity and to separate it from extrinsic thermoelectric effects.
AB - The spin-Seebeck effect (SSE) converts a heat current into a spin current, a flow of spin angular momentum, and spin voltage, the driving force for nonequilibrium spin currents, in a ferromagnetic metal. In this study, the SSE in a ferromagnetic Ni81Fe19 film has been investigated by means of the inverse spin-Hall effect (ISHE) in a Pt film at room temperature. The experimental results measured in the Ni81Fe19/Pt system show that the sign of the thermally induced spin voltage is reversed between the higher- and lower-temperature ends of the Ni81Fe19 film. The ISHE in the Pt film allows us to detect the SSE signal with high sensitivity and to separate it from extrinsic thermoelectric effects.
KW - A. Metals
KW - A. Thin films
KW - C. Spin-orbit effects
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U2 - 10.1016/j.ssc.2009.10.045
DO - 10.1016/j.ssc.2009.10.045
M3 - Article
AN - SCOPUS:77449102153
VL - 150
SP - 524
EP - 528
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 11-12
ER -