Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes

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	Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes
	Hu, Xiao; Yang, Hongxin; Jiang, Yong-Cheng; Kariyado, Toshikaze
刊名	PHYSICAL REVIEW B
	2018
卷号	98 期号:19
关键词	Initio Molecular-dynamics Total-energy Calculations Massless Dirac Fermions Wave Basis-set Antidot Lattices Electronic-properties Semiconductors Superlattices Lithography Realization
英文摘要	Topological properties of graphene with nanoholes are theoretically investigated in detail. It is revealed that two types of hole arrangements, honeycomb array and triangular array, give rise to two topologically distinct states. We give a concise two-step strategy for choosing array structures, where two types of Brillouin zone folding, corner-to-corner or corner-to-center, play crucial roles. The topological nontriviality is confirmed by interface states at a domain wall between the honeycomb and triangular hole arrays, which show a cross-shaped band structure resembling helical edge states in quantum spin Hall states. We also diagnose the topology of the states from the view point of the topological crystalline insulator and show that the parity index against the C-2 rotation is a key quantity. These findings indicate that nanotechnology-based geometrical design and manipulation are promising in exploration of topological phases of matter.
学科主题	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17018]
专题	2018专题
推荐引用方式 GB/T 7714	Hu, Xiao,Yang, Hongxin,Jiang, Yong-Cheng,et al. Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes[J]. PHYSICAL REVIEW B,2018,98(19).
APA	Hu, Xiao,Yang, Hongxin,Jiang, Yong-Cheng,&Kariyado, Toshikaze.(2018).Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes.PHYSICAL REVIEW B,98(19).
MLA	Hu, Xiao,et al."Counterpropagating topological interface states in graphene patchwork structures with regular arrays of nanoholes".PHYSICAL REVIEW B 98.19(2018).