Magnetism and topology in Tb-based icosahedral quasicrystal
Abstract Quasicrystal (QC) possesses a unique lattice structure with rotational symmetry forbidden in conventional crystals. The electric property is far from complete understanding and it has been a long-standing issue whether the magnetic long-range order is realized in the QC. The main difficulty...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-97024-w |
| _version_ | 1818683798480486400 |
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| author | Shinji Watanabe |
| author_facet | Shinji Watanabe |
| author_sort | Shinji Watanabe |
| collection | DOAJ |
| description | Abstract Quasicrystal (QC) possesses a unique lattice structure with rotational symmetry forbidden in conventional crystals. The electric property is far from complete understanding and it has been a long-standing issue whether the magnetic long-range order is realized in the QC. The main difficulty was lack of microscopic theory to analyze the effect of the crystalline electric field (CEF) at the rare-earth atom in QCs. Here we show the full microscopic analysis of the CEF in Tb-based QCs. We find that magnetic anisotropy arising from the CEF plays a key role in realizing unique magnetic textures on the icosahedron whose vertices Tb atoms are located at. Our analysis of the minimal model based on the magnetic anisotropy suggests that the long-range order of the hedgehog characterized by the topological charge of one is stabilized in the Tb-based QC. We also find that the whirling-moment state is characterized by unusually large topological charge of three. The magnetic textures as well as the topological states are shown to be switched by controlling compositions of the non-rare-earth elements in the ternary compounds. Our model is useful to understand the magnetism as well as the topological property in the rare-earth-based QCs and approximant crystals. |
| first_indexed | 2024-12-17T10:40:28Z |
| format | Article |
| id | doaj.art-dd4a9ea7fff24e0e989d3566630aedc4 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-17T10:40:28Z |
| publishDate | 2021-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-dd4a9ea7fff24e0e989d3566630aedc42022-12-21T21:52:17ZengNature PortfolioScientific Reports2045-23222021-09-011111810.1038/s41598-021-97024-wMagnetism and topology in Tb-based icosahedral quasicrystalShinji Watanabe0Department of Basic Sciences, Kyushu Institute of TechnologyAbstract Quasicrystal (QC) possesses a unique lattice structure with rotational symmetry forbidden in conventional crystals. The electric property is far from complete understanding and it has been a long-standing issue whether the magnetic long-range order is realized in the QC. The main difficulty was lack of microscopic theory to analyze the effect of the crystalline electric field (CEF) at the rare-earth atom in QCs. Here we show the full microscopic analysis of the CEF in Tb-based QCs. We find that magnetic anisotropy arising from the CEF plays a key role in realizing unique magnetic textures on the icosahedron whose vertices Tb atoms are located at. Our analysis of the minimal model based on the magnetic anisotropy suggests that the long-range order of the hedgehog characterized by the topological charge of one is stabilized in the Tb-based QC. We also find that the whirling-moment state is characterized by unusually large topological charge of three. The magnetic textures as well as the topological states are shown to be switched by controlling compositions of the non-rare-earth elements in the ternary compounds. Our model is useful to understand the magnetism as well as the topological property in the rare-earth-based QCs and approximant crystals.https://doi.org/10.1038/s41598-021-97024-w |
| spellingShingle | Shinji Watanabe Magnetism and topology in Tb-based icosahedral quasicrystal Scientific Reports |
| title | Magnetism and topology in Tb-based icosahedral quasicrystal |
| title_full | Magnetism and topology in Tb-based icosahedral quasicrystal |
| title_fullStr | Magnetism and topology in Tb-based icosahedral quasicrystal |
| title_full_unstemmed | Magnetism and topology in Tb-based icosahedral quasicrystal |
| title_short | Magnetism and topology in Tb-based icosahedral quasicrystal |
| title_sort | magnetism and topology in tb based icosahedral quasicrystal |
| url | https://doi.org/10.1038/s41598-021-97024-w |
| work_keys_str_mv | AT shinjiwatanabe magnetismandtopologyintbbasedicosahedralquasicrystal |