Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides
Abstract Moiré superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic ferroelectric moiré potentials in twisted hBN allow the hosting of remote Coulomb superlattice potentials to adjacen...
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2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202408034 |
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| author | Kwanghee Han Minhyun Cho Taehyung Kim Seung Tae Kim Suk Hyun Kim Sang Hwa Park Sang Mo Yang Kenji Watanabe Takashi Taniguchi Vinod Menon Young Duck Kim |
| author_facet | Kwanghee Han Minhyun Cho Taehyung Kim Seung Tae Kim Suk Hyun Kim Sang Hwa Park Sang Mo Yang Kenji Watanabe Takashi Taniguchi Vinod Menon Young Duck Kim |
| author_sort | Kwanghee Han |
| collection | DOAJ |
| description | Abstract Moiré superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic ferroelectric moiré potentials in twisted hBN allow the hosting of remote Coulomb superlattice potentials to adjacent 2D materials. Therefore, the new strategies for engineering moiré length, angle, and potential strength are essential for developing programmable quantum materials. Here, it demonstrates the realization of twisted hBN‐based moiré superlattice platforms and visualizes the moiré domains and ferroelectric properties using Kelvin probe force microscopy (KPFM). Also, the regular moiré superlattice in the large area is reported. It offers the possibility to reproduce uniform moiré structures with precise control piezo stage stacking and heat annealing. It demonstrates cumulative multi‐ferroelectric polarization and multi‐level domains with multiple angle mismatched interfaces. Additionally, it observes the quasi‐1D anisotropic moiré domains and show the highest resolution analysis of the local built‐in strain between adjacent hBN layers compared to the conventional methods. Furthermore, in‐situ manipulation of moiré potential is demonstrated using femtosecond pulse laser, which results in the optical phonon‐induced atomic displacement at the hBN moiré interfaces. The results pave the way to develop precisely programmable moiré superlattice platforms and investigate strongly correlated physics. |
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| id | doaj-art-2771042aaed34898809b33662df7ea5e |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-2771042aaed34898809b33662df7ea5e2025-01-29T09:50:18ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202408034Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron NitridesKwanghee Han0Minhyun Cho1Taehyung Kim2Seung Tae Kim3Suk Hyun Kim4Sang Hwa Park5Sang Mo Yang6Kenji Watanabe7Takashi Taniguchi8Vinod Menon9Young Duck Kim10Department of Physics Kyung Hee University Seoul 02447 Republic of KoreaDepartment of Physics Kyung Hee University Seoul 02447 Republic of KoreaDepartment of Physics Kyung Hee University Seoul 02447 Republic of KoreaDepartment of Physics Kyung Hee University Seoul 02447 Republic of KoreaDepartment of Physics Kyung Hee University Seoul 02447 Republic of KoreaDepartment of Physics Sogang University Seoul 04107 Republic of KoreaDepartment of Physics Sogang University Seoul 04107 Republic of KoreaResearch Center for Electronic and Optical Materials National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 JapanResearch Center for Materials Nanoarchitectonics National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 JapanDepartment of Physics City College of New York New York NY 10031 USADepartment of Physics Kyung Hee University Seoul 02447 Republic of KoreaAbstract Moiré superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic ferroelectric moiré potentials in twisted hBN allow the hosting of remote Coulomb superlattice potentials to adjacent 2D materials. Therefore, the new strategies for engineering moiré length, angle, and potential strength are essential for developing programmable quantum materials. Here, it demonstrates the realization of twisted hBN‐based moiré superlattice platforms and visualizes the moiré domains and ferroelectric properties using Kelvin probe force microscopy (KPFM). Also, the regular moiré superlattice in the large area is reported. It offers the possibility to reproduce uniform moiré structures with precise control piezo stage stacking and heat annealing. It demonstrates cumulative multi‐ferroelectric polarization and multi‐level domains with multiple angle mismatched interfaces. Additionally, it observes the quasi‐1D anisotropic moiré domains and show the highest resolution analysis of the local built‐in strain between adjacent hBN layers compared to the conventional methods. Furthermore, in‐situ manipulation of moiré potential is demonstrated using femtosecond pulse laser, which results in the optical phonon‐induced atomic displacement at the hBN moiré interfaces. The results pave the way to develop precisely programmable moiré superlattice platforms and investigate strongly correlated physics.https://doi.org/10.1002/advs.202408034ferroelectricitymoiré superlatticeremote Coulomb potentialtwisted hexagonal boron nitridetwistronics |
| spellingShingle | Kwanghee Han Minhyun Cho Taehyung Kim Seung Tae Kim Suk Hyun Kim Sang Hwa Park Sang Mo Yang Kenji Watanabe Takashi Taniguchi Vinod Menon Young Duck Kim Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides Advanced Science ferroelectricity moiré superlattice remote Coulomb potential twisted hexagonal boron nitride twistronics |
| title | Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides |
| title_full | Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides |
| title_fullStr | Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides |
| title_full_unstemmed | Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides |
| title_short | Highly Tunable Moiré Superlattice Potentials in Twisted Hexagonal Boron Nitrides |
| title_sort | highly tunable moire superlattice potentials in twisted hexagonal boron nitrides |
| topic | ferroelectricity moiré superlattice remote Coulomb potential twisted hexagonal boron nitride twistronics |
| url | https://doi.org/10.1002/advs.202408034 |
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