Observation of unconventional van der Waals multiferroics near room temperature
| Autor: | Wu, Yangliu, Lu, Haipeng, Han, Xiaocang, Yang, Chendi, Liu, Nanshu, Zhao, Xiaoxu, Qiao, Liang, Ji, Wei, Che, Renchao, Deng, Longjiang, Peng, Bo |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The search for two-dimensional (2D) van der Waals (vdW) multiferroics is an exciting yet challenging endeavor. Room-temperature 2D vdW few-layer multiferroic is a much bigger insurmountable obstacle. Here we report the discovery of an unconventional 2D vdW multiferroic with out-of-plane ferroelectric polarization and long-range magnetic orders in trilayer NiI2 device from 10 K to 295 K. The evolutions of magnetic domains with magnetic field, and the evolutions between ferroelectric and antiferroelectric phase have been unambiguously observed. More significantly, we realize a robust mutual control of magnetism and ferroelectricity at room temperature. The magnetic domains are manipulated by a small voltage ranging from 1 V to 6 V at 0 T and 295 K. This work opens opportunities for exploring multiferroic physics at the limit of few atomic layers. Comment: 4 figures |
| Databáze: | arXiv |
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