Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves

Le Wang; Yasuhiro Fukuma; Hiroshi Idzuchi; Guanghua Yu; Yong Jiang; Yoshichika Otani

doi:10.1143/APEX.4.093004

Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves

Le Wang, Yasuhiro Fukuma, Hiroshi Idzuchi, Guanghua Yu, Yong Jiang, Yoshichika Otani

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

17 Citations (Scopus)

Abstract

We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400°C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2mω. Further increase in the annealing temperature up to 500°C causes a decrease in the spin valve signal of 48.0mω. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves.

Original language	English
Article number	093004
Journal	Applied Physics Express
Volume	4
Issue number	9
DOIs	https://doi.org/10.1143/APEX.4.093004
Publication status	Published - 2011 Sept
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves",

abstract = "We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400°C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2mω. Further increase in the annealing temperature up to 500°C causes a decrease in the spin valve signal of 48.0mω. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves.",

author = "Le Wang and Yasuhiro Fukuma and Hiroshi Idzuchi and Guanghua Yu and Yong Jiang and Yoshichika Otani",

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language = "English",

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T1 - Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves

AU - Wang, Le

AU - Fukuma, Yasuhiro

AU - Idzuchi, Hiroshi

AU - Yu, Guanghua

AU - Jiang, Yong

AU - Otani, Yoshichika

PY - 2011/9

Y1 - 2011/9

N2 - We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400°C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2mω. Further increase in the annealing temperature up to 500°C causes a decrease in the spin valve signal of 48.0mω. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves.

AB - We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400°C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2mω. Further increase in the annealing temperature up to 500°C causes a decrease in the spin valve signal of 48.0mω. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves.

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Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves

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