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Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers

We study the spin orbit torque (SOT) and Dzyaloshinskii-Moriya interaction (DMI) in the dual-interfaced Co-Ni perpendicular multilayers. Through the combination of top and bottom layer materials (Pt, Ta, MgO and Cu), SOT and DMI are efficiently manipulated due to an enhancement or cancellation of th...

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Autores principales: Yu, Jiawei, Qiu, Xuepeng, Wu, Yang, Yoon, Jungbum, Deorani, Praveen, Besbas, Jean Mourad, Manchon, Aurelien, Yang, Hyunsoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5013523/
https://www.ncbi.nlm.nih.gov/pubmed/27601317
http://dx.doi.org/10.1038/srep32629
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author Yu, Jiawei
Qiu, Xuepeng
Wu, Yang
Yoon, Jungbum
Deorani, Praveen
Besbas, Jean Mourad
Manchon, Aurelien
Yang, Hyunsoo
author_facet Yu, Jiawei
Qiu, Xuepeng
Wu, Yang
Yoon, Jungbum
Deorani, Praveen
Besbas, Jean Mourad
Manchon, Aurelien
Yang, Hyunsoo
author_sort Yu, Jiawei
collection PubMed
description We study the spin orbit torque (SOT) and Dzyaloshinskii-Moriya interaction (DMI) in the dual-interfaced Co-Ni perpendicular multilayers. Through the combination of top and bottom layer materials (Pt, Ta, MgO and Cu), SOT and DMI are efficiently manipulated due to an enhancement or cancellation of the top and bottom contributions. However, SOT is found to originate mostly from the bulk of a heavy metal (HM), while DMI is more of interfacial origin. In addition, we find that the direction of the domain wall (DW) motion can be either along or against the electron flow depending on the DW tilting angle when there is a large DMI. Such an abnormal DW motion induces a large assist field required for hysteretic magnetization reversal. Our results provide insight into the role of DMI in SOT driven magnetization switching, and demonstrate the feasibility of achieving desirable SOT and DMI for spintronic devices.
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spelling pubmed-50135232016-09-12 Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers Yu, Jiawei Qiu, Xuepeng Wu, Yang Yoon, Jungbum Deorani, Praveen Besbas, Jean Mourad Manchon, Aurelien Yang, Hyunsoo Sci Rep Article We study the spin orbit torque (SOT) and Dzyaloshinskii-Moriya interaction (DMI) in the dual-interfaced Co-Ni perpendicular multilayers. Through the combination of top and bottom layer materials (Pt, Ta, MgO and Cu), SOT and DMI are efficiently manipulated due to an enhancement or cancellation of the top and bottom contributions. However, SOT is found to originate mostly from the bulk of a heavy metal (HM), while DMI is more of interfacial origin. In addition, we find that the direction of the domain wall (DW) motion can be either along or against the electron flow depending on the DW tilting angle when there is a large DMI. Such an abnormal DW motion induces a large assist field required for hysteretic magnetization reversal. Our results provide insight into the role of DMI in SOT driven magnetization switching, and demonstrate the feasibility of achieving desirable SOT and DMI for spintronic devices. Nature Publishing Group 2016-09-07 /pmc/articles/PMC5013523/ /pubmed/27601317 http://dx.doi.org/10.1038/srep32629 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Yu, Jiawei
Qiu, Xuepeng
Wu, Yang
Yoon, Jungbum
Deorani, Praveen
Besbas, Jean Mourad
Manchon, Aurelien
Yang, Hyunsoo
Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title_full Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title_fullStr Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title_full_unstemmed Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title_short Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
title_sort spin orbit torques and dzyaloshinskii-moriya interaction in dual-interfaced co-ni multilayers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5013523/
https://www.ncbi.nlm.nih.gov/pubmed/27601317
http://dx.doi.org/10.1038/srep32629
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