Ferromagnetism and correlated insulating states in monolayer Mo33Te56
Abstract Although the kagome model is fundamentally two-dimensional, the essential kagome physics, i.e., the kagome-bands-driven emergent electronic states, has yet to be explored in the monolayer limit. Here, we present the experimental realization of kagome physics in monolayer Mo33Te56, showcasin...
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Nature Portfolio
2025-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-58226-2 |
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| author | Zemin Pan Wenqi Xiong Jiaqi Dai Hui Zhang Yunhua Wang Tao Jian Xingxia Cui Jinghao Deng Xiaoyu Lin Zhengbo Cheng Yusong Bai Chao Zhu Da Huo Geng Li Min Feng Jun He Wei Ji Shengjun Yuan Fengcheng Wu Chendong Zhang Hong-Jun Gao |
| author_facet | Zemin Pan Wenqi Xiong Jiaqi Dai Hui Zhang Yunhua Wang Tao Jian Xingxia Cui Jinghao Deng Xiaoyu Lin Zhengbo Cheng Yusong Bai Chao Zhu Da Huo Geng Li Min Feng Jun He Wei Ji Shengjun Yuan Fengcheng Wu Chendong Zhang Hong-Jun Gao |
| author_sort | Zemin Pan |
| collection | DOAJ |
| description | Abstract Although the kagome model is fundamentally two-dimensional, the essential kagome physics, i.e., the kagome-bands-driven emergent electronic states, has yet to be explored in the monolayer limit. Here, we present the experimental realization of kagome physics in monolayer Mo33Te56, showcasing both ferromagnetic ordering and a correlated insulating state with an energy gap of up to 15 meV. Using a combination of scanning tunnelling microscopy and theoretical calculations, we find a structural phase of the monolayer Mo-Te compound, which forms a mirror-twin boundary loop superlattice exhibiting kagome geometry and multiple sets of kagome bands. The partial occupancy of these nearly flat bands results in Fermi surface instability, counteracted by the emergence of ferromagnetic order (with a coercive field ~0.1 T, as observed by spin-polarized STM) and the opening of a correlated hard gap. Our work establishes a robust framework featuring well-defined atomic and band structures, alongside the intrinsic two-dimensional nature, essential for the rigorous examination of kagome physics. |
| format | Article |
| id | doaj-art-c450934fb6a84d4d99d2b8d1ebf8ee1e |
| institution | OA Journals |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c450934fb6a84d4d99d2b8d1ebf8ee1e2025-08-20T01:56:09ZengNature PortfolioNature Communications2041-17232025-03-011611810.1038/s41467-025-58226-2Ferromagnetism and correlated insulating states in monolayer Mo33Te56Zemin Pan0Wenqi Xiong1Jiaqi Dai2Hui Zhang3Yunhua Wang4Tao Jian5Xingxia Cui6Jinghao Deng7Xiaoyu Lin8Zhengbo Cheng9Yusong Bai10Chao Zhu11Da Huo12Geng Li13Min Feng14Jun He15Wei Ji16Shengjun Yuan17Fengcheng Wu18Chendong Zhang19Hong-Jun Gao20School of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversityBeijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, School of Physics, Renmin University of ChinaSchool of Physics and Technology, Wuhan UniversityKey Laboratory of Quantum Theory and Applications of Ministry of Education and School of Physical Science and Technology, Lanzhou UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversityBeijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesSchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversityBeijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, School of Physics, Renmin University of ChinaSchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversityBeijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesAbstract Although the kagome model is fundamentally two-dimensional, the essential kagome physics, i.e., the kagome-bands-driven emergent electronic states, has yet to be explored in the monolayer limit. Here, we present the experimental realization of kagome physics in monolayer Mo33Te56, showcasing both ferromagnetic ordering and a correlated insulating state with an energy gap of up to 15 meV. Using a combination of scanning tunnelling microscopy and theoretical calculations, we find a structural phase of the monolayer Mo-Te compound, which forms a mirror-twin boundary loop superlattice exhibiting kagome geometry and multiple sets of kagome bands. The partial occupancy of these nearly flat bands results in Fermi surface instability, counteracted by the emergence of ferromagnetic order (with a coercive field ~0.1 T, as observed by spin-polarized STM) and the opening of a correlated hard gap. Our work establishes a robust framework featuring well-defined atomic and band structures, alongside the intrinsic two-dimensional nature, essential for the rigorous examination of kagome physics.https://doi.org/10.1038/s41467-025-58226-2 |
| spellingShingle | Zemin Pan Wenqi Xiong Jiaqi Dai Hui Zhang Yunhua Wang Tao Jian Xingxia Cui Jinghao Deng Xiaoyu Lin Zhengbo Cheng Yusong Bai Chao Zhu Da Huo Geng Li Min Feng Jun He Wei Ji Shengjun Yuan Fengcheng Wu Chendong Zhang Hong-Jun Gao Ferromagnetism and correlated insulating states in monolayer Mo33Te56 Nature Communications |
| title | Ferromagnetism and correlated insulating states in monolayer Mo33Te56 |
| title_full | Ferromagnetism and correlated insulating states in monolayer Mo33Te56 |
| title_fullStr | Ferromagnetism and correlated insulating states in monolayer Mo33Te56 |
| title_full_unstemmed | Ferromagnetism and correlated insulating states in monolayer Mo33Te56 |
| title_short | Ferromagnetism and correlated insulating states in monolayer Mo33Te56 |
| title_sort | ferromagnetism and correlated insulating states in monolayer mo33te56 |
| url | https://doi.org/10.1038/s41467-025-58226-2 |
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