Scanning tunneling microscopy observations of single-crystal FeMgOFe magnetic tunnel junctions

M. Mizuguchi; Y. Suzuki; T. Nagahama; S. Yuasa

doi:10.1063/1.2170069

Scanning tunneling microscopy observations of single-crystal FeMgOFe magnetic tunnel junctions

M. Mizuguchi, Y. Suzuki, T. Nagahama, S. Yuasa

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

7 Citations (Scopus)

Abstract

Scanning tunneling microscopy observations of a single-crystal Fe (001) MgO (001) Fe (001) magnetic tunnel junction which shows a large tunnel magnetoresistance effect were performed. Step-and-terrace structures of an epitaxial MgO barrier layer, which are very similar to surfaces of a bottom Fe underlayer, were observed. This indicates that the MgO terraces were grown flatly on each terrace of the Fe electrode. It is supposed that these atomically flat terraces enable a coherent tunneling of electrons through magnetic tunnel junctions.

Original language	English
Article number	08T308
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2170069
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.2170069

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title = "Scanning tunneling microscopy observations of single-crystal FeMgOFe magnetic tunnel junctions",

abstract = "Scanning tunneling microscopy observations of a single-crystal Fe (001) MgO (001) Fe (001) magnetic tunnel junction which shows a large tunnel magnetoresistance effect were performed. Step-and-terrace structures of an epitaxial MgO barrier layer, which are very similar to surfaces of a bottom Fe underlayer, were observed. This indicates that the MgO terraces were grown flatly on each terrace of the Fe electrode. It is supposed that these atomically flat terraces enable a coherent tunneling of electrons through magnetic tunnel junctions.",

author = "M. Mizuguchi and Y. Suzuki and T. Nagahama and S. Yuasa",

note = "Funding Information: The authors 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 and by Fundamental Research Grant of TEPCO Research Foundation.",

year = "2006",

doi = "10.1063/1.2170069",

language = "English",

volume = "99",

journal = "Journal of Applied Physics",

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T1 - Scanning tunneling microscopy observations of single-crystal FeMgOFe magnetic tunnel junctions

AU - Mizuguchi, M.

AU - Suzuki, Y.

AU - Nagahama, T.

AU - Yuasa, S.

N1 - Funding Information: The authors 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 and by Fundamental Research Grant of TEPCO Research Foundation.

PY - 2006

Y1 - 2006

N2 - Scanning tunneling microscopy observations of a single-crystal Fe (001) MgO (001) Fe (001) magnetic tunnel junction which shows a large tunnel magnetoresistance effect were performed. Step-and-terrace structures of an epitaxial MgO barrier layer, which are very similar to surfaces of a bottom Fe underlayer, were observed. This indicates that the MgO terraces were grown flatly on each terrace of the Fe electrode. It is supposed that these atomically flat terraces enable a coherent tunneling of electrons through magnetic tunnel junctions.

AB - Scanning tunneling microscopy observations of a single-crystal Fe (001) MgO (001) Fe (001) magnetic tunnel junction which shows a large tunnel magnetoresistance effect were performed. Step-and-terrace structures of an epitaxial MgO barrier layer, which are very similar to surfaces of a bottom Fe underlayer, were observed. This indicates that the MgO terraces were grown flatly on each terrace of the Fe electrode. It is supposed that these atomically flat terraces enable a coherent tunneling of electrons through magnetic tunnel junctions.

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Scanning tunneling microscopy observations of single-crystal FeMgOFe magnetic tunnel junctions

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