Non-Hermitian topological Anderson insulators

作     者：Dan-Wei Zhang Ling-Zhi Tang Li-Jun Lang Hui Yan Shi-Liang Zhu Dan-Wei Zhang;Ling-Zhi Tang;Li-Jun Lang;Hui Yan;Shi-Liang Zhu

作者机构：Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum MaterialsGPETR Center for Quantum Precision Measurement and SPTESouth China Normal UniversityGuangzhou 510006China National Laboratory of Solid State MicrostructuresSchool of PhysicsNanjing UniversityNanjing 210093China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2020年第63卷第6期

页      面：2-12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 Key Research and Development Program of China(Grant No.2016YFA0301800) the National Natural Science Foundation of China(Grant Nos.11704367,11904109,91636218) the National Natural Science Foundation of China(Grant Nos.U1830111,and U1801661) the Key-Area Research and Development Program of GuangDong Province(Grant No.2019B030330001) the Key Program of Science and Technology of Guangzhou(Grant No.201804020055) 

主　　题：topological insulators non-Hermitian systems localization properties 

摘      要：Non-Hermitian systems can exhibit exotic topological and localization *** we elucidate the non-Hermitian effects on disordered topological systems using a nonreciprocal disordered Su-Schrieffer-Heeger *** show that the non-Hermiticity can enhance the topological phase against disorders by increasing bulk ***,we uncover a topological phase which emerges under both moderate non-Hermiticity and disorders,and is characterized by localized insulating bulk states with a disorder-averaged winding number and zero-energy edge *** topological phases induced by the combination of non-Hermiticity and disorders are dubbed non-Hermitian topological Anderson *** reveal that the system has unique non-monotonous localization behavior and the topological transition is accompanied by an Anderson *** properties are general in other non-Hermitian models.