Dipolar wavevector interference induces a polar skyrmion lattice in strained BiFeO3 films
文献类型：期刊论文
| 作者 | Geng, W. R.1; Zhu, Y. L.1,2,3; Zhu, M. X.2,4; Tang, Y. L.2; Zhao, H. J.5; Lei, C. H.6; Wang, Y. J.2; Wang, J. H.2,4; Jiang, R. J.2,4; Liu, S. Z.2,4 |
| 刊名 | NATURE NANOTECHNOLOGY
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| 出版日期 | 2025-01-16 |
| 页码 | 18 |
| ISSN号 | 1748-3387 |
| DOI | 10.1038/s41565-024-01845-5 |
| 通讯作者 | Ma, X. L.(xlma@iphy.ac.cn) |
| 英文摘要 | Skyrmions can form regular arrangements, so-called skyrmion crystals (SkXs). A mode with multiple wavevectors q then describes the arrangement. While magnetic SkXs, which can emerge in the presence of Dzyaloshinskii-Moriya interaction, are well established, polar skyrmion lattices are still elusive. Here we report the observation of polar SkXs with a well-defined double-q state in ultrathin BiFeO3 films on LaAlO3. The compressive strain induced by the LaAlO3 substrate yields a dipolar topological texture with a periodic arrangement of skyrmions. The square-like superstructure with a lattice constant of 2.68 nm features a periodic modulation of polarization fields and topological charge density. The film furthermore exhibits an enhanced electromechanical response with an increased converse piezoelectric coefficient (d33) compared with SkX-free films. Transmission electron microscopy experiments in combination with phase-field simulations indicate that the dipole skyrmion texture results from the interference of two orthogonal single-q dipole patterns. We anticipate that the interference of multiple wavevectors may lead to a diversity of topological crystals with a variety of symmetries and lattice constants. |
| 资助项目 | (1) Funder: the Key Research Program of Frontier Sciences CAS; Grant Reference Number: QYZDJ-SSW-JSC010; (2) Funder: Shenyang National Laboratory for Materials Science; Grant Reference Number: L2019R06;[52201018] ; (1) Funder: the Key Research Program of Frontier Sciences CAS; Grant Reference Number: QYZDJ-SSW-JSC010; (2) Funder: Shenyang National Laboratory for Materials Science; Grant Reference Number: L2019R06;[51971223] ; (1) Funder: the Key Research Program of Frontier Sciences CAS; Grant Reference Number: QYZDJ-SSW-JSC010; (2) Funder: Shenyang National Laboratory for Materials Science; Grant Reference Number: L2019R06;[51922100] ; (1) Funder: the Key Research Program of Frontier Sciences CAS; Grant Reference Number: QYZDJ-SSW-JSC010; (2) Funder: Shenyang National Laboratory for Materials Science; Grant Reference Number: L2019R06;[52122101] ; National Natural Science Foundation of China[2021A1515110291] ; National Natural Science Foundation of China[2023A1515012796] ; Guangdong Basic and Applied Basic Research Foundation[2022T150690] ; China Postdoctoral Science Foundation[GDZX2202001] ; China Postdoctoral Science Foundation[GDZX2302001] ; China Postdoctoral Science Foundation[GDZX2402001] ; Guangdong Provincial Quantum Science Strategic Initiative[QYZDJ-SSW-JSC010] ; Key Research Program of Frontier Sciences CAS[L2019R06] ; Key Research Program of Frontier Sciences CAS[L2019R08] ; Key Research Program of Frontier Sciences CAS[L2019F01] ; Key Research Program of Frontier Sciences CAS[L2019F13] ; Shenyang National Laboratory for Materials Science[YJKYYQ20200066] ; Scientific Instrument Developing Project of CAS[Y202048] ; Youth Innovation Promotion Association of CAS[2021187] ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001398675900001 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | (1) Funder: the Key Research Program of Frontier Sciences CAS; Grant Reference Number: QYZDJ-SSW-JSC010; (2) Funder: Shenyang National Laboratory for Materials Science; Grant Reference Number: L2019R06; ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; China Postdoctoral Science Foundation ; Guangdong Provincial Quantum Science Strategic Initiative ; Key Research Program of Frontier Sciences CAS ; Shenyang National Laboratory for Materials Science ; Scientific Instrument Developing Project of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association CAS |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma, X. L. |
| 作者单位 | 1.Songshan Lake Mat Lab, Bay Area Ctr Electron Microscopy, Dongguan, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 3.Hunan Univ Sci & Technol, Xiangtan, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 5.Jilin Univ, Coll Phys, Key Lab Mat Simulat Methods & Software, Minist Educ, Changchun, Peoples R China 6.Univ Scranton, Dept Phys & Engn, Scranton, PA USA 7.Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding, Peoples R China 8.Chinese Acad Sci, Inst Phys, Beijing, Peoples R China 9.Quantum Sci Ctr Guangdong Hong Kong Macau Greater, Shenzhen, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng, W. R.,Zhu, Y. L.,Zhu, M. X.,et al. Dipolar wavevector interference induces a polar skyrmion lattice in strained BiFeO3 films[J]. NATURE NANOTECHNOLOGY,2025:18. |
| APA | Geng, W. R..,Zhu, Y. L..,Zhu, M. X..,Tang, Y. L..,Zhao, H. J..,...&Ma, X. L..(2025).Dipolar wavevector interference induces a polar skyrmion lattice in strained BiFeO3 films.NATURE NANOTECHNOLOGY,18. |
| MLA | Geng, W. R.,et al."Dipolar wavevector interference induces a polar skyrmion lattice in strained BiFeO3 films".NATURE NANOTECHNOLOGY (2025):18. |
入库方式： OAI收割
来源：金属研究所
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