Cargando…
Magnetic dynamics of hedgehog in icosahedral quasicrystal
Quasicrystals (QCs) possess a unique lattice structure without translational invariance, which is characterized by the rotational symmetry forbidden in periodic crystals such as the 5-fold rotation. Recent discovery of the ferromagnetic (FM) long-range order in the terbium-based QC has brought about...
Autor principal: | |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9478144/ https://www.ncbi.nlm.nih.gov/pubmed/36109617 http://dx.doi.org/10.1038/s41598-022-19870-6 |
_version_ | 1784790502546079744 |
---|---|
author | Watanabe, Shinji |
author_facet | Watanabe, Shinji |
author_sort | Watanabe, Shinji |
collection | PubMed |
description | Quasicrystals (QCs) possess a unique lattice structure without translational invariance, which is characterized by the rotational symmetry forbidden in periodic crystals such as the 5-fold rotation. Recent discovery of the ferromagnetic (FM) long-range order in the terbium-based QC has brought about breakthrough but the magnetic structure and dynamics remain unresolved. Here, we reveal the dynamical as well as static structure of the FM hedgehog state in the icosahedral QC. The FM hedgehog is shown to be characterized by the triple-Q state in the reciprocal-lattice [Formula: see text] space. Dynamical structure factor is shown to exhibit highly structured [Formula: see text] and energy dependences. We find a unique magnetic excitation mode along the 5-fold direction exhibiting the streak fine structure in the [Formula: see text] -energy plane, which is characteristic of the hedgehog in the icosahedral QC. Non-reciprocal magnetic excitations are shown to arise from the FM hedgehog order, which emerge in the vast extent of the [Formula: see text] -energy plane. |
format | Online Article Text |
id | pubmed-9478144 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-94781442022-09-17 Magnetic dynamics of hedgehog in icosahedral quasicrystal Watanabe, Shinji Sci Rep Article Quasicrystals (QCs) possess a unique lattice structure without translational invariance, which is characterized by the rotational symmetry forbidden in periodic crystals such as the 5-fold rotation. Recent discovery of the ferromagnetic (FM) long-range order in the terbium-based QC has brought about breakthrough but the magnetic structure and dynamics remain unresolved. Here, we reveal the dynamical as well as static structure of the FM hedgehog state in the icosahedral QC. The FM hedgehog is shown to be characterized by the triple-Q state in the reciprocal-lattice [Formula: see text] space. Dynamical structure factor is shown to exhibit highly structured [Formula: see text] and energy dependences. We find a unique magnetic excitation mode along the 5-fold direction exhibiting the streak fine structure in the [Formula: see text] -energy plane, which is characteristic of the hedgehog in the icosahedral QC. Non-reciprocal magnetic excitations are shown to arise from the FM hedgehog order, which emerge in the vast extent of the [Formula: see text] -energy plane. Nature Publishing Group UK 2022-09-15 /pmc/articles/PMC9478144/ /pubmed/36109617 http://dx.doi.org/10.1038/s41598-022-19870-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis 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 Watanabe, Shinji Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title | Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title_full | Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title_fullStr | Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title_full_unstemmed | Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title_short | Magnetic dynamics of hedgehog in icosahedral quasicrystal |
title_sort | magnetic dynamics of hedgehog in icosahedral quasicrystal |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9478144/ https://www.ncbi.nlm.nih.gov/pubmed/36109617 http://dx.doi.org/10.1038/s41598-022-19870-6 |
work_keys_str_mv | AT watanabeshinji magneticdynamicsofhedgehoginicosahedralquasicrystal |