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Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers

In twisted two-dimensional (2D) magnets, the stacking dependence of the magnetic exchange interaction can lead to regions of ferromagnetic and antiferromagnetic interlayer order, separated by non-collinear, skyrmion-like spin textures. Recent experimental searches for these textures have focused on...

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Autores principales: Yao, Fengrui, Multian, Volodymyr, Wang, Zhe, Ubrig, Nicolas, Teyssier, Jérémie, Wu, Fan, Giannini, Enrico, Gibertini, Marco, Gutiérrez-Lezama, Ignacio, Morpurgo, Alberto F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10435511/
https://www.ncbi.nlm.nih.gov/pubmed/37591960
http://dx.doi.org/10.1038/s41467-023-40723-x
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author Yao, Fengrui
Multian, Volodymyr
Wang, Zhe
Ubrig, Nicolas
Teyssier, Jérémie
Wu, Fan
Giannini, Enrico
Gibertini, Marco
Gutiérrez-Lezama, Ignacio
Morpurgo, Alberto F.
author_facet Yao, Fengrui
Multian, Volodymyr
Wang, Zhe
Ubrig, Nicolas
Teyssier, Jérémie
Wu, Fan
Giannini, Enrico
Gibertini, Marco
Gutiérrez-Lezama, Ignacio
Morpurgo, Alberto F.
author_sort Yao, Fengrui
collection PubMed
description In twisted two-dimensional (2D) magnets, the stacking dependence of the magnetic exchange interaction can lead to regions of ferromagnetic and antiferromagnetic interlayer order, separated by non-collinear, skyrmion-like spin textures. Recent experimental searches for these textures have focused on CrI(3), known to exhibit either ferromagnetic or antiferromagnetic interlayer order, depending on layer stacking. However, the very strong uniaxial anisotropy of CrI(3) disfavors smooth non-collinear phases in twisted bilayers. Here, we report the experimental observation of three distinct magnetic phases—one ferromagnetic and two antiferromagnetic—in exfoliated CrBr(3) multilayers, and reveal that the uniaxial anisotropy is significantly smaller than in CrI(3). These results are obtained by magnetoconductance measurements on CrBr(3) tunnel barriers and Raman spectroscopy, in conjunction with density functional theory calculations, which enable us to identify the stackings responsible for the different interlayer magnetic couplings. The detection of all locally stable magnetic states predicted to exist in CrBr(3) and the excellent agreement found between theory and experiments, provide complete information on the stacking-dependent interlayer exchange energy and establish twisted bilayer CrBr(3) as an ideal system to deterministically create non-collinear magnetic phases.
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spelling pubmed-104355112023-08-19 Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers Yao, Fengrui Multian, Volodymyr Wang, Zhe Ubrig, Nicolas Teyssier, Jérémie Wu, Fan Giannini, Enrico Gibertini, Marco Gutiérrez-Lezama, Ignacio Morpurgo, Alberto F. Nat Commun Article In twisted two-dimensional (2D) magnets, the stacking dependence of the magnetic exchange interaction can lead to regions of ferromagnetic and antiferromagnetic interlayer order, separated by non-collinear, skyrmion-like spin textures. Recent experimental searches for these textures have focused on CrI(3), known to exhibit either ferromagnetic or antiferromagnetic interlayer order, depending on layer stacking. However, the very strong uniaxial anisotropy of CrI(3) disfavors smooth non-collinear phases in twisted bilayers. Here, we report the experimental observation of three distinct magnetic phases—one ferromagnetic and two antiferromagnetic—in exfoliated CrBr(3) multilayers, and reveal that the uniaxial anisotropy is significantly smaller than in CrI(3). These results are obtained by magnetoconductance measurements on CrBr(3) tunnel barriers and Raman spectroscopy, in conjunction with density functional theory calculations, which enable us to identify the stackings responsible for the different interlayer magnetic couplings. The detection of all locally stable magnetic states predicted to exist in CrBr(3) and the excellent agreement found between theory and experiments, provide complete information on the stacking-dependent interlayer exchange energy and establish twisted bilayer CrBr(3) as an ideal system to deterministically create non-collinear magnetic phases. Nature Publishing Group UK 2023-08-17 /pmc/articles/PMC10435511/ /pubmed/37591960 http://dx.doi.org/10.1038/s41467-023-40723-x Text en © The Author(s) 2023, corrected publication 2023 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Yao, Fengrui
Multian, Volodymyr
Wang, Zhe
Ubrig, Nicolas
Teyssier, Jérémie
Wu, Fan
Giannini, Enrico
Gibertini, Marco
Gutiérrez-Lezama, Ignacio
Morpurgo, Alberto F.
Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title_full Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title_fullStr Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title_full_unstemmed Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title_short Multiple antiferromagnetic phases and magnetic anisotropy in exfoliated CrBr(3) multilayers
title_sort multiple antiferromagnetic phases and magnetic anisotropy in exfoliated crbr(3) multilayers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10435511/
https://www.ncbi.nlm.nih.gov/pubmed/37591960
http://dx.doi.org/10.1038/s41467-023-40723-x
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