Spin Resolved Zero-Line Modes in Minimally Twisted Bilayer Graphene from Exchange Field and Gate Voltage  

作　　者：Sanyi You Jiaqi An Zhenhua Qiao 

机构地区：[1]International Centre for Quantum Design of Functional Materials,CAS Key Laboratory of Strongly Coupled Quantum Matter Physics,and Department of Physics,University of Science and Technology of China,Hefei 230026,China [2]Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

出　　处：《Chinese Physics Letters》2024年第7期111-116,共6页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.11974327 and 12004369);the Natural Science Basic Research Program of Shanxi Province (Grant No.20210302124252);Anhui Initiative in Quantum Information Technologies (Grant No.AHY170000);the Innovation Program for Quantum Science and Technology (Grant No.2021ZD0302800)。

摘　　要：The reliance on spin-orbit coupling or strong magnetic fields has always posed significant challenges for the mass production and even laboratory realization of most topological materials. Valley-based topological zero-line modes have attracted widespread attention due to their substantial advantage of being initially realizable with just an external electric field. However, the uncontrollable nature of electrode alignment and precise fabrication has greatly hindered the advancement in this field. By utilizing minimally twisted bilayer graphene and introducing exchange fields from magnetic substrates, we successfully realize a spin-resolved, electrode-free topological zeroline mode. Further integration of electrodes that do not require alignment considerations significantly enhances the tunability of the system's band structure. Our approach offers a promising new support for the dazzling potential of topological zero-line mode in the realm of low-energy-consumption electronics.

关 键 词：structure field TOPOLOGICAL 

分 类 号：O469[理学—凝聚态物理]