Strong Coupled Magnetic and Electric Ordering in Monolayer of Metal Thio(seleno)phosphates  

作　　者：Chenqiang Hua Hua Bai Yi Zheng Zhu-An Xu Shengyuan A.Yang Yunhao Lu Su-Huai Wei 华陈强;白桦;郑毅;许祝安;杨声远;陆赟豪;魏苏淮(Zhejiang Province Key Laboratory of Quantum Technology and Device,State Key Laboratory of Silicon Materials,Department of Physics,Zhejiang University,Hangzhou 310027,China;Research Laboratory for Quantum Materials,Singapore University of Technology and Design,Singapore 487372,Singapore;Beijing Computational Science Research Center,Beijing 100193,China)

机构地区：[1]Zhejiang Province Key Laboratory of Quantum Technology and Device,State Key Laboratory of Silicon Materials,Department of Physics,Zhejiang University,Hangzhou 310027,China [2]Research Laboratory for Quantum Materials,Singapore University of Technology and Design,Singapore 487372,Singapore [3]Beijing Computational Science Research Center,Beijing 100193,China

出　　处：《Chinese Physics Letters》2021年第7期145-150,共6页中国物理快报（英文版）

基　　金：Supported by the National Key R&D Program of China(Grant No.2019YFE0112000);the Zhejiang Provincial Natural Science Foundation of China(Grant No.LR21A040001);the National Natural Science Foundation of China(Grant No.11974307,12088101,11991060,and U1930402).

摘　　要：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.

关 键 词：FERROELECTRIC coupling transition 

分 类 号：TB34[一般工业技术—材料科学与工程]