Large spin-orbit torque observed in epitaxial SrIrO 3 thin films
© 2019 Author(s). Semimetallic iridate compound SrIrO3 epitaxial films have been deposited by off-axis sputtering, exhibiting excellent crystalline quality as well as smooth surfaces. By performing second-harmonic Hall measurements on a series of SrIrO3/Co1-xTbx bilayers, we quantitatively determine...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing
2021
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| Online Access: | https://hdl.handle.net/1721.1/134763 |
| _version_ | 1826192390995574784 |
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| author | Wang, Hailong Meng, Keng-Yuan Zhang, Pengxiang Hou, Justin T Finley, Joseph Han, Jiahao Yang, Fengyuan Liu, Luqiao |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Wang, Hailong Meng, Keng-Yuan Zhang, Pengxiang Hou, Justin T Finley, Joseph Han, Jiahao Yang, Fengyuan Liu, Luqiao |
| author_sort | Wang, Hailong |
| collection | MIT |
| description | © 2019 Author(s). Semimetallic iridate compound SrIrO3 epitaxial films have been deposited by off-axis sputtering, exhibiting excellent crystalline quality as well as smooth surfaces. By performing second-harmonic Hall measurements on a series of SrIrO3/Co1-xTbx bilayers, we quantitatively determined the spin-to-charge interconversion efficiency θ SH of SrIrO3 and discovered a systematic temperature and film thickness dependent evolution behavior. Notably, the measured θ SH reaches a remarkably large number of ∼1.1 at room temperature, which is significantly larger than the value of 5d transition metals and comparable to the values reported in some topological material systems. Our findings are further corroborated by ferromagnetic resonance-driven spin pumping studies in SrIrO3/Py bilayers, highlighting the significant opportunities offered by the iridate compounds in designing next-generation energy-efficient multifunctional spin Hall devices. |
| first_indexed | 2024-09-23T09:11:33Z |
| format | Article |
| id | mit-1721.1/134763 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:11:33Z |
| publishDate | 2021 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1347632023-02-22T21:03:28Z Large spin-orbit torque observed in epitaxial SrIrO 3 thin films Wang, Hailong Meng, Keng-Yuan Zhang, Pengxiang Hou, Justin T Finley, Joseph Han, Jiahao Yang, Fengyuan Liu, Luqiao Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science © 2019 Author(s). Semimetallic iridate compound SrIrO3 epitaxial films have been deposited by off-axis sputtering, exhibiting excellent crystalline quality as well as smooth surfaces. By performing second-harmonic Hall measurements on a series of SrIrO3/Co1-xTbx bilayers, we quantitatively determined the spin-to-charge interconversion efficiency θ SH of SrIrO3 and discovered a systematic temperature and film thickness dependent evolution behavior. Notably, the measured θ SH reaches a remarkably large number of ∼1.1 at room temperature, which is significantly larger than the value of 5d transition metals and comparable to the values reported in some topological material systems. Our findings are further corroborated by ferromagnetic resonance-driven spin pumping studies in SrIrO3/Py bilayers, highlighting the significant opportunities offered by the iridate compounds in designing next-generation energy-efficient multifunctional spin Hall devices. 2021-10-27T20:09:01Z 2021-10-27T20:09:01Z 2019 2021-01-28T19:14:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134763 en 10.1063/1.5097699 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 AIP Publishing Other repository |
| spellingShingle | Wang, Hailong Meng, Keng-Yuan Zhang, Pengxiang Hou, Justin T Finley, Joseph Han, Jiahao Yang, Fengyuan Liu, Luqiao Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title | Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title_full | Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title_fullStr | Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title_full_unstemmed | Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title_short | Large spin-orbit torque observed in epitaxial SrIrO 3 thin films |
| title_sort | large spin orbit torque observed in epitaxial sriro 3 thin films |
| url | https://hdl.handle.net/1721.1/134763 |
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