Peculiar temperature dependence of electric-field effect on magnetic anisotropy in Co/Pd/MgO system

Y. Hibino; T. Koyama; A. Obinata; T. Hirai; S. Ota; K. Miwa; S. Ono; F. Matsukura; H. Ohno; D. Chiba

doi:10.1063/1.4961621

Peculiar temperature dependence of electric-field effect on magnetic anisotropy in Co/Pd/MgO system

Y. Hibino, T. Koyama, A. Obinata, T. Hirai, S. Ota, K. Miwa, S. Ono, F. Matsukura, H. Ohno, D. Chiba

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

29 Citations (Scopus)

Abstract

We report on the temperature dependence of the magnetic anisotropy in Co/Pd/MgO system, in which magnetic moment in Pd is induced by the magnetic proximity effect. We demonstrate that the magnetic anisotropy is modulated by applying an electric field to the Pd surface. At temperatures below 100 K, we find the nonlinear electric-field dependence of the anisotropy with the sign reversal. We obtain a huge anisotropy modulation efficiency of ∼1600 fJ/V m at 10 K.

Original language	English
Article number	082403
Journal	Applied Physics Letters
Volume	109
Issue number	8
DOIs	https://doi.org/10.1063/1.4961621
Publication status	Published - 2016 Aug 22

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4961621

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title = "Peculiar temperature dependence of electric-field effect on magnetic anisotropy in Co/Pd/MgO system",

abstract = "We report on the temperature dependence of the magnetic anisotropy in Co/Pd/MgO system, in which magnetic moment in Pd is induced by the magnetic proximity effect. We demonstrate that the magnetic anisotropy is modulated by applying an electric field to the Pd surface. At temperatures below 100 K, we find the nonlinear electric-field dependence of the anisotropy with the sign reversal. We obtain a huge anisotropy modulation efficiency of ∼1600 fJ/V m at 10 K.",

author = "Y. Hibino and T. Koyama and A. Obinata and T. Hirai and S. Ota and K. Miwa and S. Ono and F. Matsukura and H. Ohno and D. Chiba",

note = "Funding Information: The authors thank H. Sato for discussion. This work was partly supported by JSPS KAKENHI (Grant Nos. 25220604, 15H05702, and 16J03105) and Spintronics Research Network of Japan. A part of the work was performed using facilities of the Cryogenic Research Center, the University of Tokyo.",

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T1 - Peculiar temperature dependence of electric-field effect on magnetic anisotropy in Co/Pd/MgO system

AU - Hibino, Y.

AU - Koyama, T.

AU - Obinata, A.

AU - Hirai, T.

AU - Ota, S.

AU - Miwa, K.

AU - Ono, S.

AU - Matsukura, F.

AU - Ohno, H.

AU - Chiba, D.

N1 - Funding Information: The authors thank H. Sato for discussion. This work was partly supported by JSPS KAKENHI (Grant Nos. 25220604, 15H05702, and 16J03105) and Spintronics Research Network of Japan. A part of the work was performed using facilities of the Cryogenic Research Center, the University of Tokyo.

PY - 2016/8/22

Y1 - 2016/8/22

N2 - We report on the temperature dependence of the magnetic anisotropy in Co/Pd/MgO system, in which magnetic moment in Pd is induced by the magnetic proximity effect. We demonstrate that the magnetic anisotropy is modulated by applying an electric field to the Pd surface. At temperatures below 100 K, we find the nonlinear electric-field dependence of the anisotropy with the sign reversal. We obtain a huge anisotropy modulation efficiency of ∼1600 fJ/V m at 10 K.

AB - We report on the temperature dependence of the magnetic anisotropy in Co/Pd/MgO system, in which magnetic moment in Pd is induced by the magnetic proximity effect. We demonstrate that the magnetic anisotropy is modulated by applying an electric field to the Pd surface. At temperatures below 100 K, we find the nonlinear electric-field dependence of the anisotropy with the sign reversal. We obtain a huge anisotropy modulation efficiency of ∼1600 fJ/V m at 10 K.

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