Topological phase transitions and Majorana zero modes induced by the periodic potential in an antiferromagnetic chain  

作　　者：K W Shen Q Chen 

机构地区：[1]College of Physics and Mechanical&Electrical Engineering,Jishou University,Jishou 416000,China [2]School of Computational Science and Electronics,Hunan Institute of Engineering,Xiangtan 411104,China

出　　处：《Communications in Theoretical Physics》2023年第8期156-162,共7页理论物理通讯（英文版）

基　　金：supported by the Hunan Provincial Natural Science Foundation of China(Nos.2020JJ4240,2018JJ2078);the Scientific Research Fund of Hunan Provincial Education Department(No.19A106,18C0699);the Postgraduate University-Level Research Programme of Jishou University(No.Jdy22043)。

摘　　要：We investigate the topological properties of an antiferromagnetic(AFM)chain with an on-site periodic potential,considering the intrinsic spin–orbit coupling and an external Zeeman field along with the nanowire.Our results indicate that Majorana zero modes(MZMs)can be observed by adjusting the strength of the periodic potential.We have calculated the energy spectrum,the wave-function and transport properties,and all these results support the existence of MZMs in the AFM chain.Additionally,multiple topological phase transitions occur as the strength of the periodic potential changes,and several regions support MZMs.

关 键 词：AFM chain Majorana zero modes topological phase transitions periodic potential 

分 类 号：O469[理学—凝聚态物理]