Polar vortex hidden in twisted bilayers of paraelectric SrTiO3
Abstract Polar topologies, such as vortex and skyrmion, have attracted significant interest due to their unique physical properties and promising applications in high-density memory devices. To date, all known polar vortices are present in or induced by ferroelectric materials. In this study, we fin...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55328-1 |
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| author | Haozhi Sha Yixuan Zhang Yunpeng Ma Wei Li Wenfeng Yang Jizhe Cui Qian Li Houbing Huang Rong Yu |
| author_facet | Haozhi Sha Yixuan Zhang Yunpeng Ma Wei Li Wenfeng Yang Jizhe Cui Qian Li Houbing Huang Rong Yu |
| author_sort | Haozhi Sha |
| collection | DOAJ |
| description | Abstract Polar topologies, such as vortex and skyrmion, have attracted significant interest due to their unique physical properties and promising applications in high-density memory devices. To date, all known polar vortices are present in or induced by ferroelectric materials. In this study, we find polar vortex arrays in paraelectric SrTiO3. Using multislice electron ptychography, the evolution of vorticity along the vortex axis is revealed in twisted bilayers of SrTiO3 with deep-sub-angstrom resolution and one picometer accuracy. The surprising finding of polar vortices in a paraelectric crystal opens up opportunities for polarization physics and corresponding new devices. |
| format | Article |
| id | doaj-art-ba457c16763e4530a082e1807f65ed11 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-ba457c16763e4530a082e1807f65ed112025-01-05T12:35:01ZengNature PortfolioNature Communications2041-17232024-12-011511810.1038/s41467-024-55328-1Polar vortex hidden in twisted bilayers of paraelectric SrTiO3Haozhi Sha0Yixuan Zhang1Yunpeng Ma2Wei Li3Wenfeng Yang4Jizhe Cui5Qian Li6Houbing Huang7Rong Yu8School of Materials Science and Engineering, Tsinghua UniversityAdvanced Research Institute of Multidisciplinary Science & School of Materials Science and Engineering, Beijing Institute of TechnologySchool of Materials Science and Engineering, Tsinghua UniversitySchool of Materials Science and Engineering, Tsinghua UniversitySchool of Materials Science and Engineering, Tsinghua UniversitySchool of Materials Science and Engineering, Tsinghua UniversitySchool of Materials Science and Engineering, Tsinghua UniversityAdvanced Research Institute of Multidisciplinary Science & School of Materials Science and Engineering, Beijing Institute of TechnologySchool of Materials Science and Engineering, Tsinghua UniversityAbstract Polar topologies, such as vortex and skyrmion, have attracted significant interest due to their unique physical properties and promising applications in high-density memory devices. To date, all known polar vortices are present in or induced by ferroelectric materials. In this study, we find polar vortex arrays in paraelectric SrTiO3. Using multislice electron ptychography, the evolution of vorticity along the vortex axis is revealed in twisted bilayers of SrTiO3 with deep-sub-angstrom resolution and one picometer accuracy. The surprising finding of polar vortices in a paraelectric crystal opens up opportunities for polarization physics and corresponding new devices.https://doi.org/10.1038/s41467-024-55328-1 |
| spellingShingle | Haozhi Sha Yixuan Zhang Yunpeng Ma Wei Li Wenfeng Yang Jizhe Cui Qian Li Houbing Huang Rong Yu Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 Nature Communications |
| title | Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 |
| title_full | Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 |
| title_fullStr | Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 |
| title_full_unstemmed | Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 |
| title_short | Polar vortex hidden in twisted bilayers of paraelectric SrTiO3 |
| title_sort | polar vortex hidden in twisted bilayers of paraelectric srtio3 |
| url | https://doi.org/10.1038/s41467-024-55328-1 |
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