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Multipolar edge states in the anisotropic kagome antiferromagnet
https://oist.repo.nii.ac.jp/records/1075
https://oist.repo.nii.ac.jp/records/1075375aa1be-d38e-4ab0-bfe1-668bb52b9f0e
名前 / ファイル | ライセンス | アクション |
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PhysRevB.99.014408 (4.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-29 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Multipolar edge states in the anisotropic kagome antiferromagnet | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Romhányi, Judit
× Romhányi, Judit |
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書誌情報 |
en : Physical Review B 巻 99, 号 1, p. 014408, 発行日 2019-01-09 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Excitations of ordered insulating magnets gain renewed interest due to their potential topological properties and the natural realization of magnetic analogues of the celebrated topological models. Here, we study the topologically nontrivial multiplet excitations of the spin-1/2 kagome antiferromagnet with strong breathing anisotropy and Dzyaloshinskii-Moriya interaction. We show that in the chiral magnetic ground state the excitations can be characterized with a spin-1/2 doublet and a spin-3/2 quartet. Applying magnetic field, we can tune a band touching topological transition within the quartet band. At the transition point a spin-3/2 Dirac cone is formed by the touching of four bands. In the topologically nontrivial regime the spin-3/2 bands have large Chern numbers -3, -1, 1, 3. Furthermore, the chiral edge states appearing for open boundary condition naturally inherit the multipolar characters and we find novel quadrupolar edge modes. | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2469-9950 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2469-9969 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.99.014408 | |||||
権利 | ||||||
権利情報 | ©2019 American Physical Society | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.014408 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |