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Third harmonic characterization of antiferromagnetic heterostructures
Electrical switching of antiferromagnets is an exciting recent development in spintronics, which promises active antiferromagnetic devices with high speed and low energy cost. In this emerging field, there is an active debate about the mechanisms of current-driven switching of antiferromagnets. For...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237044/ https://www.ncbi.nlm.nih.gov/pubmed/35760929 http://dx.doi.org/10.1038/s41467-022-31451-9 |
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author | Cheng, Yang Cogulu, Egecan Resnick, Rachel D. Michel, Justin J. Statuto, Nahuel N. Kent, Andrew D. Yang, Fengyuan |
author_facet | Cheng, Yang Cogulu, Egecan Resnick, Rachel D. Michel, Justin J. Statuto, Nahuel N. Kent, Andrew D. Yang, Fengyuan |
author_sort | Cheng, Yang |
collection | PubMed |
description | Electrical switching of antiferromagnets is an exciting recent development in spintronics, which promises active antiferromagnetic devices with high speed and low energy cost. In this emerging field, there is an active debate about the mechanisms of current-driven switching of antiferromagnets. For heavy-metal/ferromagnet systems, harmonic characterization is a powerful tool to quantify current-induced spin-orbit torques and spin Seebeck effect and elucidate current-induced switching. However, harmonic measurement of spin-orbit torques has never been verified in antiferromagnetic heterostructures. Here, we report harmonic measurements in Pt/α-Fe(2)O(3) bilayers, which are explained by our modeling of higher-order harmonic voltages. As compared with ferromagnetic heterostructures where all current-induced effects appear in the second harmonic signals, the damping-like torque and thermally-induced magnetoelastic effect contributions in Pt/α-Fe(2)O(3) emerge in the third harmonic voltage. Our results provide a new path to probe the current-induced magnetization dynamics in antiferromagnets, promoting the application of antiferromagnetic spintronic devices. |
format | Online Article Text |
id | pubmed-9237044 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-92370442022-06-29 Third harmonic characterization of antiferromagnetic heterostructures Cheng, Yang Cogulu, Egecan Resnick, Rachel D. Michel, Justin J. Statuto, Nahuel N. Kent, Andrew D. Yang, Fengyuan Nat Commun Article Electrical switching of antiferromagnets is an exciting recent development in spintronics, which promises active antiferromagnetic devices with high speed and low energy cost. In this emerging field, there is an active debate about the mechanisms of current-driven switching of antiferromagnets. For heavy-metal/ferromagnet systems, harmonic characterization is a powerful tool to quantify current-induced spin-orbit torques and spin Seebeck effect and elucidate current-induced switching. However, harmonic measurement of spin-orbit torques has never been verified in antiferromagnetic heterostructures. Here, we report harmonic measurements in Pt/α-Fe(2)O(3) bilayers, which are explained by our modeling of higher-order harmonic voltages. As compared with ferromagnetic heterostructures where all current-induced effects appear in the second harmonic signals, the damping-like torque and thermally-induced magnetoelastic effect contributions in Pt/α-Fe(2)O(3) emerge in the third harmonic voltage. Our results provide a new path to probe the current-induced magnetization dynamics in antiferromagnets, promoting the application of antiferromagnetic spintronic devices. Nature Publishing Group UK 2022-06-27 /pmc/articles/PMC9237044/ /pubmed/35760929 http://dx.doi.org/10.1038/s41467-022-31451-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Cheng, Yang Cogulu, Egecan Resnick, Rachel D. Michel, Justin J. Statuto, Nahuel N. Kent, Andrew D. Yang, Fengyuan Third harmonic characterization of antiferromagnetic heterostructures |
title | Third harmonic characterization of antiferromagnetic heterostructures |
title_full | Third harmonic characterization of antiferromagnetic heterostructures |
title_fullStr | Third harmonic characterization of antiferromagnetic heterostructures |
title_full_unstemmed | Third harmonic characterization of antiferromagnetic heterostructures |
title_short | Third harmonic characterization of antiferromagnetic heterostructures |
title_sort | third harmonic characterization of antiferromagnetic heterostructures |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9237044/ https://www.ncbi.nlm.nih.gov/pubmed/35760929 http://dx.doi.org/10.1038/s41467-022-31451-9 |
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