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Generic field-driven phenomena in Kitaev spin liquids: Canted magnetism and proximate spin liquid physics
https://oist.repo.nii.ac.jp/records/2071
https://oist.repo.nii.ac.jp/records/2071f1c3c49e-5937-4e2f-888f-0df655fef80f
名前 / ファイル | ライセンス | アクション |
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Hickey-2021-Generic field-driven phenomena in (6.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-05-14 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Generic field-driven phenomena in Kitaev spin liquids: Canted magnetism and proximate spin liquid physics | |||||
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) |
Hickey, Ciarán
× Hickey, Ciarán× Gohlke, Matthias× Berke, Christoph× Trebst, Simon |
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書誌情報 |
en : Physical Review B 巻 103, 号 6, p. 064417, 発行日 2021-02-10 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Topological spin liquids in two spatial dimensions are stable phases in the presence of a small magnetic field, but may give way to field-induced phenomena at intermediate field strengths. Sandwiched between the low-field spin liquid physics and the high-field spin-polarized phase, the exploration of magnetic phenomena in this intermediate regime, however, often remains elusive to controlled analytical approaches. Here we numerically study such intermediate-field magnetic phenomena for two representative Kitaev models (on the square-octagon and decorated honeycomb lattice) that exhibit either Abelian or non-Abelian topological order in the low-field limit. Using a combination of exact diagonalization and density matrix renormalization group techniques, as well as linear spin-wave theory, we establish the generic features of Kitaev spin liquids in an external magnetic field. While ferromagnetic models typically exhibit a direct transition to the polarized state at a relatively low field strength, antiferromagnetic couplings not only substantially stabilizes the topological spin liquid phase, but generically lead to the emergence of a distinct field-induced intermediate regime, separated by a crossover from the high-field polarized regime. Our results suggest that, for most lattice geometries, this regime generically exhibits significant spin canting, antiferromagnetic spin-spin correlations, and an extended proximate spin liquid regime at finite temperatures. Notably, we identify a symmetry obstruction in the original honeycomb Kitaev model that prevents, at least for certain field directions, the formation of such canted magnetism without breaking symmetries-consistent with the recent numerical observation of an extended gapless spin liquid in this case. | |||||
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.103.064417 | |||||
権利 | ||||||
権利情報 | ©2021 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.103.064417 | |||||
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 |