Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures
Manipulating magnetism by electric current is of great interest for both fundamental and technological reasons. Much effort has been dedicated to spin–orbit torques (SOTs) in metallic structures, while quantitative investigation of analogous phenomena in magnetic insulators remains challenging due t...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2016
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| Online Access: | http://hdl.handle.net/1721.1/100900 https://orcid.org/0000-0003-2262-1249 |
| _version_ | 1811077359766339584 |
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| author | Montazeri, Mohammad Upadhyaya, Pramey Yu, Guoqiang Wong, Kin L. Lang, Murong Fan, Yabin Li, Xiang Khalili Amiri, Pedram Schwartz, Robert N. Ross, Caroline A. Wang, Kang L. Onbasli, Mehmet Cengiz |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Montazeri, Mohammad Upadhyaya, Pramey Yu, Guoqiang Wong, Kin L. Lang, Murong Fan, Yabin Li, Xiang Khalili Amiri, Pedram Schwartz, Robert N. Ross, Caroline A. Wang, Kang L. Onbasli, Mehmet Cengiz |
| author_sort | Montazeri, Mohammad |
| collection | MIT |
| description | Manipulating magnetism by electric current is of great interest for both fundamental and technological reasons. Much effort has been dedicated to spin–orbit torques (SOTs) in metallic structures, while quantitative investigation of analogous phenomena in magnetic insulators remains challenging due to their low electrical conductivity. Here we address this challenge by exploiting the interaction of light with magnetic order, to directly measure SOTs in both metallic and insulating structures. The equivalency of optical and transport measurements is established by investigating a heavy-metal/ferromagnetic-metal device (Ta/CoFeB/MgO). Subsequently, SOTs are measured optically in the contrasting case of a magnetic-insulator/heavy-metal (YIG/Pt) heterostructure, where analogous transport measurements are not viable. We observe a large anti-damping torque in the YIG/Pt system, revealing its promise for spintronic device applications. Moreover, our results demonstrate that SOT physics is directly accessible by optical means in a range of materials, where transport measurements may not be possible. |
| first_indexed | 2024-09-23T10:41:23Z |
| format | Article |
| id | mit-1721.1/100900 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:41:23Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1009002022-09-27T14:19:40Z Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures Montazeri, Mohammad Upadhyaya, Pramey Yu, Guoqiang Wong, Kin L. Lang, Murong Fan, Yabin Li, Xiang Khalili Amiri, Pedram Schwartz, Robert N. Ross, Caroline A. Wang, Kang L. Onbasli, Mehmet Cengiz Massachusetts Institute of Technology. Department of Materials Science and Engineering Onbasli, Mehmet Cengiz Ross, Caroline A. Manipulating magnetism by electric current is of great interest for both fundamental and technological reasons. Much effort has been dedicated to spin–orbit torques (SOTs) in metallic structures, while quantitative investigation of analogous phenomena in magnetic insulators remains challenging due to their low electrical conductivity. Here we address this challenge by exploiting the interaction of light with magnetic order, to directly measure SOTs in both metallic and insulating structures. The equivalency of optical and transport measurements is established by investigating a heavy-metal/ferromagnetic-metal device (Ta/CoFeB/MgO). Subsequently, SOTs are measured optically in the contrasting case of a magnetic-insulator/heavy-metal (YIG/Pt) heterostructure, where analogous transport measurements are not viable. We observe a large anti-damping torque in the YIG/Pt system, revealing its promise for spintronic device applications. Moreover, our results demonstrate that SOT physics is directly accessible by optical means in a range of materials, where transport measurements may not be possible. National Science Foundation (U.S.) (DMR-1411085) National Science Foundation (U.S.). Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems 2016-01-18T22:07:12Z 2016-01-18T22:07:12Z 2015-12 2015-08 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/100900 Montazeri, Mohammad, Pramey Upadhyaya, Mehmet C. Onbasli, Guoqiang Yu, Kin L. Wong, Murong Lang, Yabin Fan, et al. “Magneto-Optical Investigation of Spin–orbit Torques in Metallic and Insulating Magnetic Heterostructures.” Nat Comms 6 (December 8, 2015): 8958. © 2015 Macmillan Publishers Limited https://orcid.org/0000-0003-2262-1249 en_US http://dx.doi.org/10.1038/ncomms9958 Nature Communications Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature Publishing Group |
| spellingShingle | Montazeri, Mohammad Upadhyaya, Pramey Yu, Guoqiang Wong, Kin L. Lang, Murong Fan, Yabin Li, Xiang Khalili Amiri, Pedram Schwartz, Robert N. Ross, Caroline A. Wang, Kang L. Onbasli, Mehmet Cengiz Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title | Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title_full | Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title_fullStr | Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title_full_unstemmed | Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title_short | Magneto-optical investigation of spin–orbit torques in metallic and insulating magnetic heterostructures |
| title_sort | magneto optical investigation of spin orbit torques in metallic and insulating magnetic heterostructures |
| url | http://hdl.handle.net/1721.1/100900 https://orcid.org/0000-0003-2262-1249 |
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