Interfacial current-induced torques in Pt/Co/GdOx
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics
2013
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| Online Access: | http://hdl.handle.net/1721.1/79405 |
| _version_ | 1811079374877753344 |
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| author | Emori, Satoru Bono, David C. Beach, Geoffrey Stephen |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Emori, Satoru Bono, David C. Beach, Geoffrey Stephen |
| author_sort | Emori, Satoru |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T11:14:01Z |
| format | Article |
| id | mit-1721.1/79405 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:14:01Z |
| publishDate | 2013 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/794052022-09-27T18:01:11Z Interfacial current-induced torques in Pt/Co/GdOx Emori, Satoru Bono, David C. Beach, Geoffrey Stephen Massachusetts Institute of Technology. Department of Materials Science and Engineering Emori, Satoru Bono, David C. Beach, Geoffrey Stephen 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. National Science Foundation (U.S.) (NSF-ECCS 1128439) National Science Foundation (U.S.) (NSF Graduate Research Fellowship Program) 2013-07-02T15:28:36Z 2013-07-02T15:28:36Z 2012-07 2012-05 Article http://purl.org/eprint/type/JournalArticle 00036951 http://hdl.handle.net/1721.1/79405 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. en_US http://dx.doi.org/10.1063/1.4737899 Applied Physics Letters 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. application/pdf American Institute of Physics MIT web domain |
| spellingShingle | Emori, Satoru Bono, David C. Beach, Geoffrey Stephen Interfacial current-induced torques in Pt/Co/GdOx |
| title | Interfacial current-induced torques in Pt/Co/GdOx |
| title_full | Interfacial current-induced torques in Pt/Co/GdOx |
| title_fullStr | Interfacial current-induced torques in Pt/Co/GdOx |
| title_full_unstemmed | Interfacial current-induced torques in Pt/Co/GdOx |
| title_short | Interfacial current-induced torques in Pt/Co/GdOx |
| title_sort | interfacial current induced torques in pt co gdox |
| url | http://hdl.handle.net/1721.1/79405 |
| work_keys_str_mv | AT emorisatoru interfacialcurrentinducedtorquesinptcogdox AT bonodavidc interfacialcurrentinducedtorquesinptcogdox AT beachgeoffreystephen interfacialcurrentinducedtorquesinptcogdox |