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Triferroic coupling in two-dimensional WRuCl6
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DOI：10.1103/PhysRevB.110.064417.png)
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Abstract
En 中文
In this work, we report that electrically controlled ferroic properties and multistate storage can be achieved in dual-metal trihalide WRuCl6 monolayer from the perspectives of first-principles calculations. We confirm that it is a rare two-dimensional (2D) triferroics, and, particularly, ferromagnetism and ferroelasticity are coupled strongly to the ferroelectricity of 120 degrees rotation symmetry. It therefore can enable the flexible and reversible switching of ferroic orders via electric field. In addition, WRuCl6 monolayer is an intrinsic bipolar magnetic semiconductor; thus, the switchable spin-polarized carrier can be obtained by applying an electric gate voltage. Therefore, it provides an extra parameter to further improve the storage density. Our work not only offers a paradigm for the multiferroic coupling physics, but also provides a promising platform for multistate storage and multifunctional nanodevices.
Keywords:
FERROMAGNETISM