Strong Coupled Magnetic and Electric Ordering in Monolayer of Metal Thio(seleno)phosphates
Chenqiang Hua1, Hua Bai1, Yi Zheng1, Zhu-An Xu1, Shengyuan A. Yang2, Yunhao Lu1*, and Su-Huai Wei3
1Zhejiang Province Key Laboratory of Quantum Technology and Device, State Key Laboratory of Silicon Materials, Department of Physics, Zhejiang University, Hangzhou 310027, China 2Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore 487372, Singapore 3Beijing Computational Science Research Center, Beijing 100193, China
Abstract：The coupling between electric ordering and magnetic ordering in two-dimensional (2D) materials is important for both fundamental research of 2D multiferroics and future development of magnetism-based information storage and operation. Here, we introduce a scheme for realizing a magnetic phase transition through the transition of electric ordering. We take CuMoP$_{2}$S$_{6}$ monolayer as an example, which is a member of the large 2D transition-metal chalcogen-phosphates family. Based on first-principles calculations, we find that it is a multiferroic with unprecedented characters, namely, it exhibits two different phases: an antiferroelectric-antiferromagnetic phase and a ferroelectric-ferromagnetic phase, in which the electric and magnetic orderings are strongly coupled. Importantly, the electric polarization is out-of-plane, so the magnetism can be readily switched by using the gate electric field. Our finding reveals a series of 2D multiferroics with special magnetoelectric coupling, which hold great promise for experimental realization and practical applications.
. [J]. 中国物理快报, 2021, 38(7): 77501-077501.
Chenqiang Hua, Hua Bai, Yi Zheng, Zhu-An Xu, Shengyuan A. Yang, Yunhao Lu, and Su-Huai Wei. Strong Coupled Magnetic and Electric Ordering in Monolayer of Metal Thio(seleno)phosphates. Chin. Phys. Lett., 2021, 38(7): 77501-077501.
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2021, Vol. 38 
