Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx
We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O[superscript 2]−migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr ef...
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2016
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| Online Access: | http://hdl.handle.net/1721.1/101767 https://orcid.org/0000-0002-9998-7276 https://orcid.org/0000-0001-8879-1203 |
| _version_ | 1826199179457724416 |
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| author | Emori, Satoru Bauer, Uwe Woo, Seonghoon 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 Bauer, Uwe Woo, Seonghoon Beach, Geoffrey Stephen |
| author_sort | Emori, Satoru |
| collection | MIT |
| description | We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O[superscript 2]−migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr effect. Voltage-induced oxidation of Co enhances the Slonczewski-like torque by as much as an order of magnitude and simultaneously reduces the anisotropy energy barrier by a factor of ~5. Such magneto-ionic tuning of interfacial spin-orbit effects may significantly enhance the efficiency of magnetization switching and provide additional degrees of freedom in spintronic devices. |
| first_indexed | 2024-09-23T11:16:00Z |
| format | Article |
| id | mit-1721.1/101767 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:16:00Z |
| publishDate | 2016 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1017672022-09-27T18:17:41Z Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx Emori, Satoru Bauer, Uwe Woo, Seonghoon Beach, Geoffrey Stephen Massachusetts Institute of Technology. Department of Materials Science and Engineering Emori, Satoru Bauer, Uwe Woo, Seonghoon Beach, Geoffrey Stephen We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O[superscript 2]−migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr effect. Voltage-induced oxidation of Co enhances the Slonczewski-like torque by as much as an order of magnitude and simultaneously reduces the anisotropy energy barrier by a factor of ~5. Such magneto-ionic tuning of interfacial spin-orbit effects may significantly enhance the efficiency of magnetization switching and provide additional degrees of freedom in spintronic devices. National Science Foundation (U.S.) (NSF-CCS-1408172) 2016-03-24T14:42:55Z 2016-03-24T14:42:55Z 2014-12 2014-10 Article http://purl.org/eprint/type/JournalArticle 0003-6951 1077-3118 http://hdl.handle.net/1721.1/101767 Emori, Satoru, Uwe Bauer, Seonghoon Woo, and Geoffrey S. D. Beach. “Large Voltage-Induced Modification of Spin-Orbit Torques in Pt/Co/GdOx.” Applied Physics Letters 105, no. 22 (December 1, 2014): 222401. © 2014 AIP Publishing LLC https://orcid.org/0000-0002-9998-7276 https://orcid.org/0000-0001-8879-1203 en_US http://dx.doi.org/10.1063/1.4903041 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 (AIP) MIT web domain |
| spellingShingle | Emori, Satoru Bauer, Uwe Woo, Seonghoon Beach, Geoffrey Stephen Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title | Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title_full | Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title_fullStr | Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title_full_unstemmed | Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title_short | Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx |
| title_sort | large voltage induced modification of spin orbit torques in pt co gdox |
| url | http://hdl.handle.net/1721.1/101767 https://orcid.org/0000-0002-9998-7276 https://orcid.org/0000-0001-8879-1203 |
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