典型文献
Formation of topological domain walls and quantum transport properties of zero-line modes in commensurate bilayer graphene systems
文献摘要：
We study theoretically the construction of topological conducting domain walls with a finite width between AB/BA stacking regions via finite element method in bilayer graphene systems with tunable commensurate twisting angles.We find that the smaller is the twisting angle,the more significant the lattice reconstruction would be,so that sharper domain boundaries declare their existence.We subsequently study the quantum transport properties of topological zero-line modes which can exist because of the said domain boundaries via Green's function method and Landauer-Biittiker formalism,and find that in scattering regions with tri-intersectional conducting channels,topological zero-line modes both exhibit robust behavior exemplified as the saturated total transmission Gtot≈ 2e2/h and obey a specific pseudospin-conserving current partition law among the branch transport channels.The former property is unaffected by Aharonov-Bohm effect due to a weak perpendicular magnetic field,but the latter is not.Results from our genuine bilayer hexagonal system suggest a twisting angle around θ ≈ 0.1° for those properties to be expected,consistent with the existing experimental reports.
文献关键词：
中图分类号：
作者姓名：
Junjie Zeng;Rui Xue;Tao Hou;Yulei Han;Zhenhua Qiao
作者机构：
ICQD,Hefei National Laboratory for Physical Sciences at Microscale,CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics,Department of Physics,University of Science and Technology of China,Hefei 230026,China;Department of Physics,Fuzhou University,Fuzhou 350108,China
文献出处：
引用格式：
[1]Junjie Zeng;Rui Xue;Tao Hou;Yulei Han;Zhenhua Qiao-.Formation of topological domain walls and quantum transport properties of zero-line modes in commensurate bilayer graphene systems)[J].物理学前沿,2022(06):92-102
A类：
declare,Biittiker,intersectional,Gtot,2e2,pseudospin
B类：
Formation,topological,domain,walls,quantum,transport,properties,zero,line,modes,commensurate,bilayer,graphene,systems,We,study,theoretically,conducting,finite,width,between,AB,BA,stacking,regions,via,element,method,tunable,twisting,angles,find,that,smaller,more,significant,lattice,reconstruction,would,so,sharper,boundaries,their,existence,subsequently,which,because,said,Green,function,Landauer,formalism,scattering,tri,channels,both,exhibit,robust,behavior,exemplified,as,saturated,total,transmission,obey,specific,conserving,current,partition,law,among,branch,former,property,unaffected,by,Aharonov,Bohm,effect,due,weak,perpendicular,magnetic,field,but,latter,not,Results,from,our,genuine,hexagonal,suggest,around,those,expected,consistent,existing,experimental,reports
AB值：
0.584009
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
