Ferroelectricity in Charge-Ordering Crystals with Centrosymmetric Lattices

作     者：Yali Yang Laurent Bellaiche Hongjun Xiang 杨亚利;Laurent Bellaiche;向红军

作者机构：Key Laboratory of Computational Physical Sciences(Ministry of Education)State Key Laboratory of Surface Physicsand Department of PhysicsFudan UniversityShanghai 200433China Shanghai Qizhi InstitutionShanghai 200232China Physics Department and Institute for Nanoscience and EngineeringUniversity of ArkansasFayettevilleArkansas 72701USA 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2022年第39卷第9期

页      面：76-80页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11825403 and 11804138) the Office of Naval Research for the support(Grant Nos.N00014-17-1-2818 and N0001421-1-2086) 

主　　题：polarization Lattice symmetric 

摘      要：The switchability between the two ferroelectric(FE)states of an FE material makes FEs widely used in memories and other electronic ***,for conventional FEs,its FE switching only occurs between the two FE states whose spatial inversion symmetry is *** search for FE materials is therefore subject to certain *** propose a new type of FEs whose FE states still contain spatial inversion *** change in polarization of this new type of FEs originates from electronic transfer between two centrosymmetric FE states under an external electric *** BaBiO_(3) as an example,we show that charge-ordering systems can be a typical representative of this new type of ***,unlike traditional ferroelectrics,the change in polarization in this new type of FEs is quantum in nature with the direction dependent on the specific FE transition *** work therefore not only extends the concept of FEs but may also open up a new way to find multiferroics.