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arXiv · 1907.04564

Type-II multiferroic Hf$_{2}$VC$_{2}$F$_{2}$ MXene monolayer with high transition temperature

Jun-Jie Zhang·Linfang Lin·Yang Zhang·Menghao Wu·Boris I. Yakobson·Shuai Dong
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Abstract

Achieving multiferroic two-dimensional (2D) materials should enable numerous functionalities in nanoscale devices. Until now, however, predicted 2D multiferroics are very few and with coexisting yet only loosely coupled (type-I) ferroelectricity and magnetism. Here, a type-II multiferroic MXene Hf$_{2}$VC$_{2}$F$_{2}$ monolayer is identified, where ferroelectricity originates directly from its magnetism. The noncollinear Y-type spin order generates a polarization perpendicular to the spin helical plane. Remarkably, the multiferroic transition is estimated to occur above room temperature. Our investigation should open the door to a new branch of 2D materials for pursuit of intrinsically strong magnetoelectricity.

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Jun-Jie Zhang, Linfang Lin, Yang Zhang, Menghao Wu, Boris I. Yakobson, Shuai Dong. 2019-07-10. Type-II multiferroic Hf$_{2}$VC$_{2}$F$_{2}$ MXene monolayer with high transition temperature. https://doi.org/10.1021/jacs.8b06475

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