期刊
APPLIED PHYSICS LETTERS
卷 99, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3630032
关键词
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资金
- MEXT, Japan [21360140, 22560001, 23246055, 19048001]
- Grants-in-Aid for Scientific Research [22560001, 21360140, 23246055] Funding Source: KAKEN
A clear spin-valve signal and a Hanle signal were observed in a Co50Fe50/n-GaAs Schottky tunnel junction through a four-terminal non-local geometry. The sign and magnitude of the spin-valve signal were strongly dependent on the bias current, suggesting that the spin polarization at the Co50Fe50/n-GaAs interface had strong energy dependence. A clear spin-valve signal was observed at temperatures up to 290 K. The magnitude of the spin-valve signal monotonically decreased by a factor of 7.9 as the temperature increased from 10 K to 290 K; this factor was significantly smaller than the factors reported for Fe/n-GaAs junctions which range from 35 to 80. (C) 2011 American Institute of Physics. [doi:10.1063/1.3630032]
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