Commensurate-incommensurate transition in graphene on hexagonal boron nitride

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	Commensurate-incommensurate transition in graphene on hexagonal boron nitride
	Woods, CR ; Britnell, L ; Eckmann, A ; Ma, RS ; Lu, JC ; Guo, HM ; Lin, X ; Yu, GL ; Cao, Y ; Gorbachev, RV ; Kretinin, AV ; Park, J ; Ponomarenko, LA ; Katsnelson, MI ; Gornostyrev, YN ; Watanabe, K ; Taniguchi, T ; Casiraghi, C ; Gao, HJ ; Geim, AK ; Novoselov, KS
刊名	NATURE PHYSICS
	2014
卷号	10 期号:6 页码:451
ISSN号	1745-2473
通讯作者	Novoselov, KS (reprint author), Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England.
中文摘要	When a crystal is subjected to a periodic potential, under certain circumstances it can adjust itself to follow the periodicity of the potential, resulting in a commensurate state. Of particular interest are topological defects between the two commensurate phases, such as solitons and domain walls. Here we report a commensurate-incommensurate transition for graphene on top of hexagonal boron nitride (hBN). Depending on the rotation angle between the lattices of the two crystals, graphene can either stretch to adapt to a slightly different hBN periodicity (for small angles, resulting in a commensurate state) or exhibit little adjustment (the incommensurate state). In the commensurate state, areas with matching lattice constants are separated by domain walls that accumulate the generated strain. Such soliton-like objects are not only of significant fundamental interest, but their presence could also explain recent experiments where electronic and optical properties of graphene-hBN heterostructures were observed to be considerably altered.
资助信息	European Research Council; Graphene Flagship; Engineering and Physical Sciences Research Council (UK); Royal Society; US Office of Naval Research; US Air Force Office of Scientific Research; US Army Research Office; MOST of China [2013CBA01600]; Korber Foundation
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59395]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Woods, CR,Britnell, L,Eckmann, A,et al. Commensurate-incommensurate transition in graphene on hexagonal boron nitride[J]. NATURE PHYSICS,2014,10(6):451.
APA	Woods, CR.,Britnell, L.,Eckmann, A.,Ma, RS.,Lu, JC.,...&Novoselov, KS.(2014).Commensurate-incommensurate transition in graphene on hexagonal boron nitride.NATURE PHYSICS,10(6),451.
MLA	Woods, CR,et al."Commensurate-incommensurate transition in graphene on hexagonal boron nitride".NATURE PHYSICS 10.6(2014):451.