Mechanical force-induced interlayer sliding in interfacial ferroelectrics
Abstract Moiré superlattices in two-dimensional stacks have attracted worldwide interest due to their unique electronic properties. A typical example is the moiré ferroelectricity, where adjacent moirés exhibit opposite spontaneous polarization that can be switched through interlayer sliding. Howeve...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56073-9 |
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| author | Zhao Guan Lu-qi Wei Wen-cheng Fan Yi-chen Sun Wei Cao Ming Tian Neng Wan Wen-yi Tong Bin-bin Chen Ping-hua Xiang Chun-gang Duan Ni Zhong |
| author_facet | Zhao Guan Lu-qi Wei Wen-cheng Fan Yi-chen Sun Wei Cao Ming Tian Neng Wan Wen-yi Tong Bin-bin Chen Ping-hua Xiang Chun-gang Duan Ni Zhong |
| author_sort | Zhao Guan |
| collection | DOAJ |
| description | Abstract Moiré superlattices in two-dimensional stacks have attracted worldwide interest due to their unique electronic properties. A typical example is the moiré ferroelectricity, where adjacent moirés exhibit opposite spontaneous polarization that can be switched through interlayer sliding. However, in contrast to ideal regular ferroelectric moiré domains (equilateral triangles) built in most theoretical models, the unavoidable irregular moiré supercells (non-equilateral triangles) induced by external strain fields during the transfer process have been given less attention. Manipulation of controllable polarization evolutions is also a big challenge due to an interlinked network of polarized domains. In this study, we employ a sliding-disturb measurement to examine and modulate these irregular moirés via mechanical force. By introducing a curved substrate, the irregular moirés are fabricated, and three distinct types of moiré domains with different patterns are identified and modulated by external mechanical force disturbing. They exhibit reduced pinning forces when the shear direction is not aligned with the strain direction. The shift of the moirés is observed to be orthogonal to the shear direction. This work offers an effective pathway for the controlled switch of the polarization in interfacial ferroelectricity. |
| format | Article |
| id | doaj-art-f2b2ecbadbd74371805b3e127c0daa62 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-f2b2ecbadbd74371805b3e127c0daa622025-01-26T12:42:23ZengNature PortfolioNature Communications2041-17232025-01-011611710.1038/s41467-025-56073-9Mechanical force-induced interlayer sliding in interfacial ferroelectricsZhao Guan0Lu-qi Wei1Wen-cheng Fan2Yi-chen Sun3Wei Cao4Ming Tian5Neng Wan6Wen-yi Tong7Bin-bin Chen8Ping-hua Xiang9Chun-gang Duan10Ni Zhong11Key Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech UniversityKey Laboratory of MEMS of Ministry of Education, School of Integrated Circuits, Southeast UniversityKey Laboratory of MEMS of Ministry of Education, School of Integrated Circuits, Southeast UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityKey Laboratory of Polar Materials and Devices (Ministry of Education), Shanghai Center of Brain-Inspired Intelligent Materials and Devices, Department of Electronics, East China Normal UniversityAbstract Moiré superlattices in two-dimensional stacks have attracted worldwide interest due to their unique electronic properties. A typical example is the moiré ferroelectricity, where adjacent moirés exhibit opposite spontaneous polarization that can be switched through interlayer sliding. However, in contrast to ideal regular ferroelectric moiré domains (equilateral triangles) built in most theoretical models, the unavoidable irregular moiré supercells (non-equilateral triangles) induced by external strain fields during the transfer process have been given less attention. Manipulation of controllable polarization evolutions is also a big challenge due to an interlinked network of polarized domains. In this study, we employ a sliding-disturb measurement to examine and modulate these irregular moirés via mechanical force. By introducing a curved substrate, the irregular moirés are fabricated, and three distinct types of moiré domains with different patterns are identified and modulated by external mechanical force disturbing. They exhibit reduced pinning forces when the shear direction is not aligned with the strain direction. The shift of the moirés is observed to be orthogonal to the shear direction. This work offers an effective pathway for the controlled switch of the polarization in interfacial ferroelectricity.https://doi.org/10.1038/s41467-025-56073-9 |
| spellingShingle | Zhao Guan Lu-qi Wei Wen-cheng Fan Yi-chen Sun Wei Cao Ming Tian Neng Wan Wen-yi Tong Bin-bin Chen Ping-hua Xiang Chun-gang Duan Ni Zhong Mechanical force-induced interlayer sliding in interfacial ferroelectrics Nature Communications |
| title | Mechanical force-induced interlayer sliding in interfacial ferroelectrics |
| title_full | Mechanical force-induced interlayer sliding in interfacial ferroelectrics |
| title_fullStr | Mechanical force-induced interlayer sliding in interfacial ferroelectrics |
| title_full_unstemmed | Mechanical force-induced interlayer sliding in interfacial ferroelectrics |
| title_short | Mechanical force-induced interlayer sliding in interfacial ferroelectrics |
| title_sort | mechanical force induced interlayer sliding in interfacial ferroelectrics |
| url | https://doi.org/10.1038/s41467-025-56073-9 |
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