Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 47, Issue 6, Pages 1545-1548Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2011.2108272
Keywords
Lateral spin valve; spin hot spot; spin injection; spin relaxation
Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [19048013]
- Grants-in-Aid for Scientific Research [23681032, 19048013, 23244071] Funding Source: KAKEN
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Spin injection into magnesium from Permalloy is performed in the lateral spin valve geometry. A large spin valve signal of 3.1 m Omega is observed at room temperature. The injector-detector separation dependence of the spin valve signal is analyzed by using a one-dimensional spin-diffusion model. The analysis yields the spin diffusion length of about 200 nm for the Mg nanowires. The short spin diffusion length of magnesium which has a small spin-orbit interaction can possibly be explained by considering the spin-hot-spot relaxation mechanism proposed by Fabian and Das Sarma.
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