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Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy

As an in-plane charge current flows in a heavy metal film with spin–orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin–orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown hig...

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Autores principales: Li, Peng, Liu, Tao, Chang, Houchen, Kalitsov, Alan, Zhang, Wei, Csaba, Gyorgy, Li, Wei, Richardson, Daniel, DeMann, August, Rimal, Gaurab, Dey, Himadri, Jiang, J. S., Porod, Wolfgang, Field, Stuart B., Tang, Jinke, Marconi, Mario C., Hoffmann, Axel, Mryasov, Oleg, Wu, Mingzhong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025772/
https://www.ncbi.nlm.nih.gov/pubmed/27581060
http://dx.doi.org/10.1038/ncomms12688
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author Li, Peng
Liu, Tao
Chang, Houchen
Kalitsov, Alan
Zhang, Wei
Csaba, Gyorgy
Li, Wei
Richardson, Daniel
DeMann, August
Rimal, Gaurab
Dey, Himadri
Jiang, J. S.
Porod, Wolfgang
Field, Stuart B.
Tang, Jinke
Marconi, Mario C.
Hoffmann, Axel
Mryasov, Oleg
Wu, Mingzhong
author_facet Li, Peng
Liu, Tao
Chang, Houchen
Kalitsov, Alan
Zhang, Wei
Csaba, Gyorgy
Li, Wei
Richardson, Daniel
DeMann, August
Rimal, Gaurab
Dey, Himadri
Jiang, J. S.
Porod, Wolfgang
Field, Stuart B.
Tang, Jinke
Marconi, Mario C.
Hoffmann, Axel
Mryasov, Oleg
Wu, Mingzhong
author_sort Li, Peng
collection PubMed
description As an in-plane charge current flows in a heavy metal film with spin–orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin–orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-assisted switching in heavy metal/magnetic insulator systems. The experiments used a Pt/BaFe(12)O(19) bilayer where the BaFe(12)O(19) layer exhibits perpendicular magnetic anisotropy. As a charge current is passed through the Pt film, it produces a SOT that can control the up and down states of the remnant magnetization in the BaFe(12)O(19) film when the film is magnetized by an in-plane magnetic field. It can reduce or increase the switching field of the BaFe(12)O(19) film by as much as about 500 Oe when the film is switched with an out-of-plane field.
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spelling pubmed-50257722016-09-23 Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy Li, Peng Liu, Tao Chang, Houchen Kalitsov, Alan Zhang, Wei Csaba, Gyorgy Li, Wei Richardson, Daniel DeMann, August Rimal, Gaurab Dey, Himadri Jiang, J. S. Porod, Wolfgang Field, Stuart B. Tang, Jinke Marconi, Mario C. Hoffmann, Axel Mryasov, Oleg Wu, Mingzhong Nat Commun Article As an in-plane charge current flows in a heavy metal film with spin–orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin–orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-assisted switching in heavy metal/magnetic insulator systems. The experiments used a Pt/BaFe(12)O(19) bilayer where the BaFe(12)O(19) layer exhibits perpendicular magnetic anisotropy. As a charge current is passed through the Pt film, it produces a SOT that can control the up and down states of the remnant magnetization in the BaFe(12)O(19) film when the film is magnetized by an in-plane magnetic field. It can reduce or increase the switching field of the BaFe(12)O(19) film by as much as about 500 Oe when the film is switched with an out-of-plane field. Nature Publishing Group 2016-09-01 /pmc/articles/PMC5025772/ /pubmed/27581060 http://dx.doi.org/10.1038/ncomms12688 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
Li, Peng
Liu, Tao
Chang, Houchen
Kalitsov, Alan
Zhang, Wei
Csaba, Gyorgy
Li, Wei
Richardson, Daniel
DeMann, August
Rimal, Gaurab
Dey, Himadri
Jiang, J. S.
Porod, Wolfgang
Field, Stuart B.
Tang, Jinke
Marconi, Mario C.
Hoffmann, Axel
Mryasov, Oleg
Wu, Mingzhong
Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title_full Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title_fullStr Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title_full_unstemmed Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title_short Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
title_sort spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025772/
https://www.ncbi.nlm.nih.gov/pubmed/27581060
http://dx.doi.org/10.1038/ncomms12688
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