Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer
We report fast and efficient current-induced switching of a perpendicular anisotropy magnetic insulator thulium iron garnet by using spin-orbit torques (SOT) from the Pt overlayer. We first show that, with quasi-DC (10 ms) current pulses, SOT-induced switching can be achieved with an external field...
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| Format: | Article |
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American Institute of Physics (AIP)
2018
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| Online Access: | http://hdl.handle.net/1721.1/118406 https://orcid.org/0000-0001-7311-3338 https://orcid.org/0000-0001-9935-1107 https://orcid.org/0000-0003-2262-1249 |
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| author | Baumgartner, Manuel Gambardella, Pietro Avci, Can Onur Rosenberg, Ethan Raphael Beran, Lukas Quindeau, Andy Ross, Caroline A 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 Baumgartner, Manuel Gambardella, Pietro Avci, Can Onur Rosenberg, Ethan Raphael Beran, Lukas Quindeau, Andy Ross, Caroline A Beach, Geoffrey Stephen |
| author_sort | Baumgartner, Manuel |
| collection | MIT |
| description | We report fast and efficient current-induced switching of a perpendicular anisotropy magnetic insulator thulium iron garnet by using spin-orbit torques (SOT) from the Pt overlayer. We first show that, with quasi-DC (10 ms) current pulses, SOT-induced switching can be achieved with an external field as low as 2 Oe, making TmIG an outstanding candidate to realize efficient switching in heterostructures that produce moderate stray fields without requiring an external field. We then demonstrate deterministic switching with fast current pulses (≤20 ns) with an amplitude of ∼10¹²A/m², similar to all-metallic structures. We reveal that, in the presence of an initially nucleated domain, the critical switching current is reduced by up to a factor of five with respect to the fully saturated initial state, implying efficient current-driven domain wall motion in this system. Based on measurements with 2 ns-long pulses, we estimate the domain wall velocity of the order of ∼400 m/s per j = 10¹²A/m². |
| first_indexed | 2024-09-23T11:22:56Z |
| format | Article |
| id | mit-1721.1/118406 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T11:22:56Z |
| publishDate | 2018 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1184062022-09-27T19:12:26Z Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer Baumgartner, Manuel Gambardella, Pietro Avci, Can Onur Rosenberg, Ethan Raphael Beran, Lukas Quindeau, Andy Ross, Caroline A Beach, Geoffrey Stephen Massachusetts Institute of Technology. Department of Materials Science and Engineering Avci, Can Onur Rosenberg, Ethan Raphael Beran, Lukas Quindeau, Andy Ross, Caroline A Beach, Geoffrey Stephen We report fast and efficient current-induced switching of a perpendicular anisotropy magnetic insulator thulium iron garnet by using spin-orbit torques (SOT) from the Pt overlayer. We first show that, with quasi-DC (10 ms) current pulses, SOT-induced switching can be achieved with an external field as low as 2 Oe, making TmIG an outstanding candidate to realize efficient switching in heterostructures that produce moderate stray fields without requiring an external field. We then demonstrate deterministic switching with fast current pulses (≤20 ns) with an amplitude of ∼10¹²A/m², similar to all-metallic structures. We reveal that, in the presence of an initially nucleated domain, the critical switching current is reduced by up to a factor of five with respect to the fully saturated initial state, implying efficient current-driven domain wall motion in this system. Based on measurements with 2 ns-long pulses, we estimate the domain wall velocity of the order of ∼400 m/s per j = 10¹²A/m². 2018-10-09T19:47:00Z 2018-10-09T19:47:00Z 2017-08 2017-07 2018-09-25T16:40:08Z Article http://purl.org/eprint/type/JournalArticle 0003-6951 1077-3118 http://hdl.handle.net/1721.1/118406 Avci, Can Onur et al. “Fast Switching and Signature of Efficient Domain Wall Motion Driven by Spin-Orbit Torques in a Perpendicular Anisotropy Magnetic insulator/Pt Bilayer.” Applied Physics Letters 111, 7 (August 2017): 072406 © 2017 Author(s) https://orcid.org/0000-0001-7311-3338 https://orcid.org/0000-0001-9935-1107 https://orcid.org/0000-0003-2262-1249 http://dx.doi.org/10.1063/1.4994050 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 | Baumgartner, Manuel Gambardella, Pietro Avci, Can Onur Rosenberg, Ethan Raphael Beran, Lukas Quindeau, Andy Ross, Caroline A Beach, Geoffrey Stephen Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title | Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title_full | Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title_fullStr | Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title_full_unstemmed | Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title_short | Fast switching and signature of efficient domain wall motion driven by spin-orbit torques in a perpendicular anisotropy magnetic insulator/Pt bilayer |
| title_sort | fast switching and signature of efficient domain wall motion driven by spin orbit torques in a perpendicular anisotropy magnetic insulator pt bilayer |
| url | http://hdl.handle.net/1721.1/118406 https://orcid.org/0000-0001-7311-3338 https://orcid.org/0000-0001-9935-1107 https://orcid.org/0000-0003-2262-1249 |
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