Evidence of Ferroelectricity in an Antiferromagnetic Vanadium Trichloride Monolayer
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866908402445189120 |
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| author | Deng, Jinghao Guo, Deping Wen, Yao Lu, Shuangzan Zhang, Hui Cheng, Zhengbo Pan, Zemin Jian, Tao Li, Dongyu Wang, Hao Bai, Yusong Li, Zhilin Ji, Wei He, Jun Zhang, Chendong |
| author_facet | Deng, Jinghao Guo, Deping Wen, Yao Lu, Shuangzan Zhang, Hui Cheng, Zhengbo Pan, Zemin Jian, Tao Li, Dongyu Wang, Hao Bai, Yusong Li, Zhilin Ji, Wei He, Jun Zhang, Chendong |
| contents | A reduced dimensionality of multiferroic materials is highly desired for device miniaturization, but the coexistence of ferroelectricity and magnetism at the two-dimensional limit is yet to be conclusively demonstrated. Here, we used a NbSe2 substrate to break both the C3 rotational and inversion symmetries in monolayer VCl3 and thus introduced exceptional in-plane ferroelectricity into a two-dimensional magnet. Scanning tunneling spectroscopy directly visualized ferroelectric domains and manipulated their domain boundaries in monolayer VCl3, where coexisting antiferromagnetic order with canted magnetic moments was verified by vibrating sample magnetometer measurements. Our density functional theory calculations highlight the crucial role that highly directional interfacial Cl-Se interactions play in breaking the symmetries and thus in introducing in-plane ferroelectricity, which was further verified by examining an ML-VCl3/graphene sample. Our work demonstrates an approach to manipulate the ferroelectric states in monolayered magnets through van der Waals interfacial interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13513 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evidence of Ferroelectricity in an Antiferromagnetic Vanadium Trichloride Monolayer Deng, Jinghao Guo, Deping Wen, Yao Lu, Shuangzan Zhang, Hui Cheng, Zhengbo Pan, Zemin Jian, Tao Li, Dongyu Wang, Hao Bai, Yusong Li, Zhilin Ji, Wei He, Jun Zhang, Chendong Materials Science A reduced dimensionality of multiferroic materials is highly desired for device miniaturization, but the coexistence of ferroelectricity and magnetism at the two-dimensional limit is yet to be conclusively demonstrated. Here, we used a NbSe2 substrate to break both the C3 rotational and inversion symmetries in monolayer VCl3 and thus introduced exceptional in-plane ferroelectricity into a two-dimensional magnet. Scanning tunneling spectroscopy directly visualized ferroelectric domains and manipulated their domain boundaries in monolayer VCl3, where coexisting antiferromagnetic order with canted magnetic moments was verified by vibrating sample magnetometer measurements. Our density functional theory calculations highlight the crucial role that highly directional interfacial Cl-Se interactions play in breaking the symmetries and thus in introducing in-plane ferroelectricity, which was further verified by examining an ML-VCl3/graphene sample. Our work demonstrates an approach to manipulate the ferroelectric states in monolayered magnets through van der Waals interfacial interactions. |
| title | Evidence of Ferroelectricity in an Antiferromagnetic Vanadium Trichloride Monolayer |
| topic | Materials Science |
| url | https://arxiv.org/abs/2404.13513 |