Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB

M. Mizuguchi; Y. Hamada; R. Matsumoto; S. Nishioka; H. Maehara; K. Tsunekawa; D. D. Djayaprawira; N. Watanabe; T. Nagahama; A. Fukushima; H. Kubota; S. Yuasa; M. Shiraishi; Y. Suzuki

doi:10.1063/1.2171961

Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB

M. Mizuguchi, Y. Hamada, R. Matsumoto, S. Nishioka, H. Maehara, K. Tsunekawa, D. D. Djayaprawira, N. Watanabe, T. Nagahama, A. Fukushima, H. Kubota, S. Yuasa, M. Shiraishi, Y. Suzuki

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Abstract

Tunneling spectroscopy measurements of magnetic tunneling junctions including two different barrier layers were performed. Intense dips at bias voltages of ±0.3 V were observed in second derivative conductance spectra only for a magnetic tunneling junction with a MgO barrier. It was concluded that the electronic structure of the MgO barrier has significant influence on the tunneling process of electrons through magnetic tunnel junctions.

Original language	English
Article number	08T309
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2171961
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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Mizuguchi, M., Hamada, Y., Matsumoto, R., Nishioka, S., Maehara, H., Tsunekawa, K., Djayaprawira, D. D., Watanabe, N., Nagahama, T., Fukushima, A., Kubota, H., Yuasa, S., Shiraishi, M., & Suzuki, Y. (2006). Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB. Journal of Applied Physics, 99(8), [08T309]. https://doi.org/10.1063/1.2171961

Mizuguchi, M, Hamada, Y, Matsumoto, R, Nishioka, S, Maehara, H, Tsunekawa, K, Djayaprawira, DD, Watanabe, N, Nagahama, T, Fukushima, A, Kubota, H, Yuasa, S, Shiraishi, M & Suzuki, Y 2006, 'Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB', Journal of Applied Physics, vol. 99, no. 8, 08T309. https://doi.org/10.1063/1.2171961

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title = "Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB",

abstract = "Tunneling spectroscopy measurements of magnetic tunneling junctions including two different barrier layers were performed. Intense dips at bias voltages of ±0.3 V were observed in second derivative conductance spectra only for a magnetic tunneling junction with a MgO barrier. It was concluded that the electronic structure of the MgO barrier has significant influence on the tunneling process of electrons through magnetic tunnel junctions.",

author = "M. Mizuguchi and Y. Hamada and R. Matsumoto and S. Nishioka and H. Maehara and K. Tsunekawa and Djayaprawira, {D. D.} and N. Watanabe and T. Nagahama and A. Fukushima and H. Kubota and S. Yuasa and M. Shiraishi and Y. Suzuki",

note = "Funding Information: We are grateful to M. Yamamoto of AIST for assisting with the experiments. This work was partly supported by The 21st Century COE Program (G18) of the Japan Society for the Promotion of Science.",

year = "2006",

doi = "10.1063/1.2171961",

language = "English",

volume = "99",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "8",

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TY - JOUR

T1 - Tunneling spectroscopy of magnetic tunnel junctions

T2 - Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB

AU - Mizuguchi, M.

AU - Hamada, Y.

AU - Matsumoto, R.

AU - Nishioka, S.

AU - Maehara, H.

AU - Tsunekawa, K.

AU - Djayaprawira, D. D.

AU - Watanabe, N.

AU - Nagahama, T.

AU - Fukushima, A.

AU - Kubota, H.

AU - Yuasa, S.

AU - Shiraishi, M.

AU - Suzuki, Y.

N1 - Funding Information: We are grateful to M. Yamamoto of AIST for assisting with the experiments. This work was partly supported by The 21st Century COE Program (G18) of the Japan Society for the Promotion of Science.

PY - 2006

Y1 - 2006

N2 - Tunneling spectroscopy measurements of magnetic tunneling junctions including two different barrier layers were performed. Intense dips at bias voltages of ±0.3 V were observed in second derivative conductance spectra only for a magnetic tunneling junction with a MgO barrier. It was concluded that the electronic structure of the MgO barrier has significant influence on the tunneling process of electrons through magnetic tunnel junctions.

AB - Tunneling spectroscopy measurements of magnetic tunneling junctions including two different barrier layers were performed. Intense dips at bias voltages of ±0.3 V were observed in second derivative conductance spectra only for a magnetic tunneling junction with a MgO barrier. It was concluded that the electronic structure of the MgO barrier has significant influence on the tunneling process of electrons through magnetic tunnel junctions.

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DO - 10.1063/1.2171961

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AN - SCOPUS:33646736882

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Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB

Abstract

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