典型文献
Local Density of States Modulated by Strain in Marginally Twisted Bilayer Graphene
文献摘要：
In marginally twisted bilayer graphene,the Moiré pattern consists of the maximized AB(BA)stacking regions,minimized A A stacking regions and triangular networks of domain walls.Here we realize the strain-modulated electronic structures of marginally twisted bilayer graphene by scanning tunneling microscopy/spectroscopy and density functional theory(DFT)calculations.The experimental data show four peaks near the Fermi energy at the AA regions.DFT calculations indicate that the two new peaks closer to the Fermi level may originate from the intrinsic heterostrain and the electric field implemented by back gate is likely to account for the observed shift of the four peaks.Furthermore,the dⅠ/dV map across Moiré patterns with different strain strengths exhibits a distinct appearance of the helical edge states.
文献关键词：
中图分类号：
作者姓名：
Jia-Jun Ma;Zhen-Yu Wang;Shui-Gang Xu;Yu-Xiang Gao;Yu-Yang Zhang;Qing Dai;Xiao Lin;Shi-Xuan Du;Jindong Ren;Hong-Jun Gao
作者机构：
Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory for Quantum Materials of Zhejiang Province,School of Science,Westlake University,Hangzhou 310024,China;Institute of Natural Sciences,Westlake Institute for Advanced Study,Hangzhou 310024,China;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China;CAS Key Laboratory of Nanophotonic Materials and Devices,CAS Key Laboratory of Standardization and Measurement for Nano-technology,National Center for Nanoscience and Technology,Beijing 100190,China
文献出处：
引用格式：
[1]Jia-Jun Ma;Zhen-Yu Wang;Shui-Gang Xu;Yu-Xiang Gao;Yu-Yang Zhang;Qing Dai;Xiao Lin;Shi-Xuan Du;Jindong Ren;Hong-Jun Gao-.Local Density of States Modulated by Strain in Marginally Twisted Bilayer Graphene)[J].中国物理快报（英文版）,2022(04):89-94
A类：
Marginally,heterostrain
B类：
Local,Density,States,Modulated,by,Strain,Twisted,Bilayer,Graphene,In,marginally,twisted,bilayer,graphene,Moir,consists,maximized,AB,BA,stacking,regions,minimized,triangular,networks,domain,walls,Here,we,realize,modulated,electronic,structures,scanning,tunneling,microscopy,spectroscopy,density,functional,theory,DFT,calculations,experimental,data,show,four,peaks,near,Fermi,energy,AA,indicate,that,new,closer,level,may,originate,from,intrinsic,electric,field,implemented,back,gate,likely,account,observed,shift,Furthermore,dV,map,across,patterns,different,strengths,exhibits,distinct,appearance,helical,edge,states
AB值：
0.68019
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