Interfacial current-induced torques in Pt/Co/GdOx
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Beach_interfacial current.pdf
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1.06 MB
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Checksum (MD5)
971cfc6149dff3196b6814018686e8d2
Author(s)
Emori, Satoru
Bono, David C.
Beach, Geoffrey Stephen
Date Issued
July 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Citation
Emori, Satoru, David C. Bono, and Geoffrey S. D. Beach. Interfacial Current-induced Torques in Pt/Co/GdOx. Applied Physics Letters 101, no. 4 (2012): 042405. © 2012 American Institute of Physics.
Version
Final published version
Abstract
Current-driven domain wall (DW) motion is investigated in Pt/Co/GdOx nanostrips with perpendicular magnetic anisotropy. Measurements of the propagation field and the energy barrier for thermally activated DW motion reveal a large current-induced torque equivalent to an out-of-plane magnetic field of ∼60 Oe per 10[superscript 11] A/m[superscript 2]. This same field-to-current scaling is shown to hold in both the slow thermally activated and fast near-flow regimes of DW motion. The current-induced torque decreases with 4 Å of Pt decorating the Co/GdOx interface and vanishes entirely with Pt replacing GdOx, suggesting that the Co/GdOx interface contributes directly to highly efficient current-driven DW motion.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4737899
