Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet

Abstract Chiral-lattice magnets can exhibit a variety of physical phenomena when time-reversal symmetry is broken by their magnetism. For example, nonreciprocal responses of (quasi)particles have been widely observed in chiral-lattice magnets with macroscopic magnetization. Meanwhile, time-reversal...

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Autores principales:	Kenta Kimura, Yasuyuki Kato, Shojiro Kimura, Yukitoshi Motome, Tsuyoshi Kimura
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/7039b7d3bd334502af33ff6945eb74dc
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spelling	oai:doaj.org-article:7039b7d3bd334502af33ff6945eb74dc2021-12-02T18:25:00ZCrystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet10.1038/s41535-021-00355-02397-4648https://doaj.org/article/7039b7d3bd334502af33ff6945eb74dc2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00355-0https://doaj.org/toc/2397-4648Abstract Chiral-lattice magnets can exhibit a variety of physical phenomena when time-reversal symmetry is broken by their magnetism. For example, nonreciprocal responses of (quasi)particles have been widely observed in chiral-lattice magnets with macroscopic magnetization. Meanwhile, time-reversal symmetry can also be broken in antiferromagnets without magnetization. Here we report an unconventional chirality-magnetism coupling in a chiral-lattice antiferromagnet Pb(TiO)Cu4(PO4)4 whose time-reversal symmetry is broken by an ordering of magnetic quadrupoles. Our experiments demonstrate that a sign of magnetic quadrupoles is controllable by a magnetic field only, which is generally impossible in consideration of the symmetry of magnetic quadrupoles. Furthermore, we find that the sign of magnetic quadrupoles stabilized by applying a magnetic field is reversed by a switching of the chirality. Our theoretical calculations and phenomenological approach reveal that this unusual coupling between the chirality and magnetic quadrupoles is mediated by the previously-unrecognized magnetic octupoles that emerge due to the chirality.Kenta KimuraYasuyuki KatoShojiro KimuraYukitoshi MotomeTsuyoshi KimuraNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (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 Kenta Kimura Yasuyuki Kato Shojiro Kimura Yukitoshi Motome Tsuyoshi Kimura Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
description	Abstract Chiral-lattice magnets can exhibit a variety of physical phenomena when time-reversal symmetry is broken by their magnetism. For example, nonreciprocal responses of (quasi)particles have been widely observed in chiral-lattice magnets with macroscopic magnetization. Meanwhile, time-reversal symmetry can also be broken in antiferromagnets without magnetization. Here we report an unconventional chirality-magnetism coupling in a chiral-lattice antiferromagnet Pb(TiO)Cu4(PO4)4 whose time-reversal symmetry is broken by an ordering of magnetic quadrupoles. Our experiments demonstrate that a sign of magnetic quadrupoles is controllable by a magnetic field only, which is generally impossible in consideration of the symmetry of magnetic quadrupoles. Furthermore, we find that the sign of magnetic quadrupoles stabilized by applying a magnetic field is reversed by a switching of the chirality. Our theoretical calculations and phenomenological approach reveal that this unusual coupling between the chirality and magnetic quadrupoles is mediated by the previously-unrecognized magnetic octupoles that emerge due to the chirality.
format	article
author	Kenta Kimura Yasuyuki Kato Shojiro Kimura Yukitoshi Motome Tsuyoshi Kimura
author_facet	Kenta Kimura Yasuyuki Kato Shojiro Kimura Yukitoshi Motome Tsuyoshi Kimura
author_sort	Kenta Kimura
title	Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
title_short	Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
title_full	Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
title_fullStr	Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
title_full_unstemmed	Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
title_sort	crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7039b7d3bd334502af33ff6945eb74dc
work_keys_str_mv	AT kentakimura crystalchiralitydependentcontrolofmagneticdomainsinatimereversalbrokenantiferromagnet AT yasuyukikato crystalchiralitydependentcontrolofmagneticdomainsinatimereversalbrokenantiferromagnet AT shojirokimura crystalchiralitydependentcontrolofmagneticdomainsinatimereversalbrokenantiferromagnet AT yukitoshimotome crystalchiralitydependentcontrolofmagneticdomainsinatimereversalbrokenantiferromagnet AT tsuyoshikimura crystalchiralitydependentcontrolofmagneticdomainsinatimereversalbrokenantiferromagnet
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Crystal-chirality-dependent control of magnetic domains in a time-reversal-broken antiferromagnet

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