Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire

T. Suzuki; S. Fukami; N. Ishiwata; M. Yamanouchi; S. Ikeda; N. Kasai; H. Ohno

doi:10.1063/1.3579155

Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire

T. Suzuki, S. Fukami, N. Ishiwata, M. Yamanouchi, S. Ikeda, N. Kasai, H. Ohno

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

128 Citations (Scopus)

Abstract

The current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire was investigated. A threshold field decrease of 6.4 kOe/mA was observed by measuring the threshold field of Hall resistance versus the magnetic field curve with various bias currents. The decrease was probably caused by the in-plane effective field, mainly due to the Rashba effect. The effective field of the Ta/CoFeB/MgO wire was smaller and opposite in direction compared to that of Pt/Co/AlO_x previously reported.

Original language	English
Article number	142505
Journal	Applied Physics Letters
Volume	98
Issue number	14
DOIs	https://doi.org/10.1063/1.3579155
Publication status	Published - 2011 Apr 4

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3579155

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title = "Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire",

abstract = "The current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire was investigated. A threshold field decrease of 6.4 kOe/mA was observed by measuring the threshold field of Hall resistance versus the magnetic field curve with various bias currents. The decrease was probably caused by the in-plane effective field, mainly due to the Rashba effect. The effective field of the Ta/CoFeB/MgO wire was smaller and opposite in direction compared to that of Pt/Co/AlOx previously reported.",

author = "T. Suzuki and S. Fukami and N. Ishiwata and M. Yamanouchi and S. Ikeda and N. Kasai and H. Ohno",

note = "Funding Information: A portion of this work was supported by the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program).” Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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doi = "10.1063/1.3579155",

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T1 - Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire

AU - Suzuki, T.

AU - Fukami, S.

AU - Ishiwata, N.

AU - Yamanouchi, M.

AU - Ikeda, S.

AU - Kasai, N.

AU - Ohno, H.

N1 - Funding Information: A portion of this work was supported by the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program).” Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011/4/4

Y1 - 2011/4/4

N2 - The current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire was investigated. A threshold field decrease of 6.4 kOe/mA was observed by measuring the threshold field of Hall resistance versus the magnetic field curve with various bias currents. The decrease was probably caused by the in-plane effective field, mainly due to the Rashba effect. The effective field of the Ta/CoFeB/MgO wire was smaller and opposite in direction compared to that of Pt/Co/AlOx previously reported.

AB - The current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire was investigated. A threshold field decrease of 6.4 kOe/mA was observed by measuring the threshold field of Hall resistance versus the magnetic field curve with various bias currents. The decrease was probably caused by the in-plane effective field, mainly due to the Rashba effect. The effective field of the Ta/CoFeB/MgO wire was smaller and opposite in direction compared to that of Pt/Co/AlOx previously reported.

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Current-induced effective field in perpendicularly magnetized Ta/CoFeB/MgO wire

Abstract

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