典型文献
Intrinsic superflat bands in general twisted bilayer systems
文献摘要：
Twisted bilayer systems with discrete magic angles,such as twisted bilayer graphene featuring moiré superlattices,provide a versatile platform for exploring novel physical properties.Here,we discover a class of superflat bands in general twisted bilayer systems beyond the low-energy physics of magic-angle twisted counterparts.By considering continuous lattice dislocation,we obtain intrinsic localized states,which are spectrally isolated at lowest and highest energies and spatially centered around the AA stacked region,governed by the macroscopic effective energy potential well.Such localized states exhibit negligible inter-cell coupling and support the formation of superflat bands in a wide and continuous parameter space,which can be mimicked using a twisted bilayer nanophotonic system.Our finding suggests that general twisted bilayer systems can realize continuously tunable superflat bands and the corresponding localized states for various photonic,phononic,and mechanical waves.
文献关键词：
中图分类号：
作者姓名：
Hongfei Wang;Shaojie Ma;Shuang Zhang;Dangyuan Lei
作者机构：
Department of Materials Science and Engineering,City University of Hong Kong,Kowloon,Hong Kong 999077,China;Department of Physics,University of Hong Kong,Hong Kong 999077,China;Department of Electrical and Electronic Engineering,University of Hong Kong,Hong Kong 999077,China
文献出处：
引用格式：
[1]Hongfei Wang;Shaojie Ma;Shuang Zhang;Dangyuan Lei-.Intrinsic superflat bands in general twisted bilayer systems)[J].光：科学与应用（英文版）,2022(07):1475-1481
A类：
superflat
B类：
Intrinsic,bands,general,twisted,bilayer,systems,Twisted,discrete,magic,angles,such,graphene,featuring,moir,superlattices,provide,versatile,platform,exploring,novel,physical,properties,Here,discover,class,beyond,energy,physics,counterparts,By,considering,dislocation,obtain,intrinsic,localized,states,which,are,spectrally,isolated,lowest,highest,energies,spatially,centered,around,AA,stacked,region,governed,by,macroscopic,effective,potential,well,Such,exhibit,negligible,inter,cell,coupling,support,formation,wide,parameter,space,can,mimicked,using,nanophotonic,Our,finding,suggests,that,realize,continuously,tunable,corresponding,various,phononic,mechanical,waves
AB值：
0.60344
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