Ferroelectricity coexisted with p-orbital ferromagnetism and metallicity in two-dimensional metal oxynitrides

作     者：Haoqiang Ai Feifei Li Haoyun Bai Dong Liu Kin Ho Lo Shengyuan AYang Yoshiyuki Kawazoe Hui Pan 

作者机构：Department of Electromechanical EngineeringFaculty of Science and TechnologyUniversity of Macao999078TaipaMacao SARP.R.China Institute of Applied Physics and Materials EngineeringUniversity of Macao999078TaipaMacao SARP.R.China Research Laboratory for Quantum MaterialsSingapore University of Technology and DesignSingapore487372Singapore Center for Quantum Transport and Thermal Energy ScienceSchool of Physics and TechnologyNanjing Normal University210023NanjingP.R.China New Industry Creation Hatchery CenterTohoku UniversitySendai980-8579Japan Department of Physics and NanotechnologySRM Institute of Science and TechnologyKattankulathur603203Tamil NaduIndia School of PhysicsSuranaree University of Technology111 University Avenue MuangNakhon Ratchasima30000Thailand Department of Physics and ChemistryFaculty of Science and TechnologyUniversity of Macao999078TaipaMacao SARP.R.China 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2022年第8卷第1期

页      面：581-587页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by the Science and Technology Development Fund(FDCT)from Macao SAR(0081/2019/AMJ 0102/2019/A2 and 0154/2019/A3) 

主　　题：metallic ferroelectric dimensional 

摘      要：Two-dimensional (2D) multiferroics have attracted increasing interests in basic science and technological fields in recent ***,most reported 2D magnetic ferroelectrics are based on the d-electron magnetism,which makes them rather rare due to the empirical d^(0) rule and limits their applications for low magnetic phase transition *** this work,we demonstrate that the ferroelectricity can coexist with the p-electron-induced ferromagnetism without the limitation of d^(0) rule and metallicity in a family of stable 2D MXene-analogous oxynitrides,X_(2)NO_(2) (X = In,Tl).Remarkably,the itinerant character of p electrons can lead to the strong ferromagnetic metallic ***,a possible magnetoelectric effect is manifested in a Tl_(2)NO_(2)/WTe_(2) heterostructure through the interface *** findings provide an alternative possible route toward 2D multiferroics and enrich the concept of ferroelectric metals.