Efficient spin injection into nonmagnetic metals through low-resistance MgO

L. Wang; Y. Fukuma; H. Idzuchi; Y. Otani

doi:10.1063/1.3556759

Efficient spin injection into nonmagnetic metals through low-resistance MgO

L. Wang, Y. Fukuma, H. Idzuchi, Y. Otani

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The effect of interface on the spin injection characteristics in lateral spin valves with Permalloy/MgO/Ag junctions has been studied. The spin valve signal drastically increases after the insertion of a thin MgO layer in the local and nonlocal spin injection schemes. We analyze our results based on the spin-dependent diffusion equation. This reveals that the interface resistance of ∼100 fm² could effectively overcome the spin resistance mismatch between ferromagnetic and nonmagnetic metals.

Original language	English
Article number	07C506
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3556759
Publication status	Published - 2011 Apr 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Efficient spin injection into nonmagnetic metals through low-resistance MgO",

abstract = "The effect of interface on the spin injection characteristics in lateral spin valves with Permalloy/MgO/Ag junctions has been studied. The spin valve signal drastically increases after the insertion of a thin MgO layer in the local and nonlocal spin injection schemes. We analyze our results based on the spin-dependent diffusion equation. This reveals that the interface resistance of ∼100 fm2 could effectively overcome the spin resistance mismatch between ferromagnetic and nonmagnetic metals.",

author = "L. Wang and Y. Fukuma and H. Idzuchi and Y. Otani",

note = "Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (No. 19048013) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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AU - Wang, L.

AU - Fukuma, Y.

AU - Idzuchi, H.

AU - Otani, Y.

N1 - Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (No. 19048013) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - The effect of interface on the spin injection characteristics in lateral spin valves with Permalloy/MgO/Ag junctions has been studied. The spin valve signal drastically increases after the insertion of a thin MgO layer in the local and nonlocal spin injection schemes. We analyze our results based on the spin-dependent diffusion equation. This reveals that the interface resistance of ∼100 fm2 could effectively overcome the spin resistance mismatch between ferromagnetic and nonmagnetic metals.

AB - The effect of interface on the spin injection characteristics in lateral spin valves with Permalloy/MgO/Ag junctions has been studied. The spin valve signal drastically increases after the insertion of a thin MgO layer in the local and nonlocal spin injection schemes. We analyze our results based on the spin-dependent diffusion equation. This reveals that the interface resistance of ∼100 fm2 could effectively overcome the spin resistance mismatch between ferromagnetic and nonmagnetic metals.

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Efficient spin injection into nonmagnetic metals through low-resistance MgO

Abstract

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