Periodically modulated skyrmion strings in Cu2OSeO3

Abstract Magnetic skyrmions are vortex-like spin textures, which are usually treated as two-dimensional objects. In their lattice state, they form well-ordered, hexagonal structures, which have been studied in great detail. To obtain a three-dimensional (3D) skyrmion crystal, these planes can be env...

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Autores principales:	D. M. Burn, R. Brearton, K. J. Ran, S. L. Zhang, G. van der Laan, T. Hesjedal
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/940789636d7c4a57b7a5274f6b12bd66
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spelling	oai:doaj.org-article:940789636d7c4a57b7a5274f6b12bd662021-12-02T18:50:48ZPeriodically modulated skyrmion strings in Cu2OSeO310.1038/s41535-021-00373-y2397-4648https://doaj.org/article/940789636d7c4a57b7a5274f6b12bd662021-08-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00373-yhttps://doaj.org/toc/2397-4648Abstract Magnetic skyrmions are vortex-like spin textures, which are usually treated as two-dimensional objects. In their lattice state, they form well-ordered, hexagonal structures, which have been studied in great detail. To obtain a three-dimensional (3D) skyrmion crystal, these planes can be envisaged to be stacked up forming skyrmion strings in the third dimension. Here, we report the observation of a 3D skyrmion phase in Cu2OSeO3 by carrying out reciprocal space mapping in resonant elastic x-ray scattering. We observe regions in the magnetic field-cooling phase diagram in which the skyrmion phase apparently coexists with the conical phase. However, such a coexistence is forbidden due to symmetry arguments. Instead, the skyrmion strings themselves are periodically modulated along their axes, as confirmed by micromagnetic simulations. The periodic modulation is in fact a necessary consequence of the evolution of the skyrmion phase out of the conical state and should therefore be a universal property of skyrmion strings in chiral helimagnets.D. M. BurnR. BreartonK. J. RanS. L. ZhangG. van der LaanT. HesjedalNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 D. M. Burn R. Brearton K. J. Ran S. L. Zhang G. van der Laan T. Hesjedal Periodically modulated skyrmion strings in Cu2OSeO3
description	Abstract Magnetic skyrmions are vortex-like spin textures, which are usually treated as two-dimensional objects. In their lattice state, they form well-ordered, hexagonal structures, which have been studied in great detail. To obtain a three-dimensional (3D) skyrmion crystal, these planes can be envisaged to be stacked up forming skyrmion strings in the third dimension. Here, we report the observation of a 3D skyrmion phase in Cu2OSeO3 by carrying out reciprocal space mapping in resonant elastic x-ray scattering. We observe regions in the magnetic field-cooling phase diagram in which the skyrmion phase apparently coexists with the conical phase. However, such a coexistence is forbidden due to symmetry arguments. Instead, the skyrmion strings themselves are periodically modulated along their axes, as confirmed by micromagnetic simulations. The periodic modulation is in fact a necessary consequence of the evolution of the skyrmion phase out of the conical state and should therefore be a universal property of skyrmion strings in chiral helimagnets.
format	article
author	D. M. Burn R. Brearton K. J. Ran S. L. Zhang G. van der Laan T. Hesjedal
author_facet	D. M. Burn R. Brearton K. J. Ran S. L. Zhang G. van der Laan T. Hesjedal
author_sort	D. M. Burn
title	Periodically modulated skyrmion strings in Cu2OSeO3
title_short	Periodically modulated skyrmion strings in Cu2OSeO3
title_full	Periodically modulated skyrmion strings in Cu2OSeO3
title_fullStr	Periodically modulated skyrmion strings in Cu2OSeO3
title_full_unstemmed	Periodically modulated skyrmion strings in Cu2OSeO3
title_sort	periodically modulated skyrmion strings in cu2oseo3
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/940789636d7c4a57b7a5274f6b12bd66
work_keys_str_mv	AT dmburn periodicallymodulatedskyrmionstringsincu2oseo3 AT rbrearton periodicallymodulatedskyrmionstringsincu2oseo3 AT kjran periodicallymodulatedskyrmionstringsincu2oseo3 AT slzhang periodicallymodulatedskyrmionstringsincu2oseo3 AT gvanderlaan periodicallymodulatedskyrmionstringsincu2oseo3 AT thesjedal periodicallymodulatedskyrmionstringsincu2oseo3
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Periodically modulated skyrmion strings in Cu2OSeO3

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