Stable planar single-layer hexagonal silicene under tensile strain and its anomalous Poisson

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	Stable planar single-layer hexagonal silicene under tensile strain and its anomalous Poisson
	Wang BL(王宝林); Wu JT(吴江涛); Gu XK; Yin HQ; Wei YJ(魏宇杰); Yang RG; Dresselhaus M
刊名	Applied Physics Letter
	2014-02-22
通讯作者邮箱	yujie_wei@lnm.imech.ac.cn; ronggui.yang@colorado.edu
卷号	104 期号:8 页码:81902
关键词	Root fracture Dentine Ageing Biomechanics Nano-indentation Finite element analysis
ISSN号	0003-6951
通讯作者	Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
产权排序	[Wang, Baolin; Wu, Jiangtao; Yin, Hanqing; Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Gu, Xiaokun; Yang, Ronggui] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA; [Dresselhaus, Mildred] MIT, Dept Phys, Cambridge, MA 02139 USA; [Dresselhaus, Mildred] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
合作状况	国际
中文摘要	Here, we report the structural and mechanical properties of several two-dimensional (2-D) materials by using first-principles density functional theory calculations. We find that the buckled single-layer silicene could transit to planar hexagonal silicene at a critical tensile strain of 0.20. Phonon dispersion analysis suggests that the planar hexagonal silicene under tension is stable. The Poisson's ratio of silicene and MoS2 shows strong anisotropy: it increases while stretched in the zigzag direction, but decreases when strained in the armchair direction. When stretched in the zigzag direction, the Poisson's ratio of silicene could reach 0.62. (C) 2014 AIP Publishing LLC.
学科主题	Physics
分类号	一类
收录类别	SCI ; EI
资助信息	Y.W. acknowledges the support from Chinese Academy of Sciences (CAS), National Natural Science Foundation of China (NSFC) (Nos. 11021262 and 11272327), and MOST 973 of China (No. 2012CB937500). Computation is supported by the Computation Center of CAS. R.Y. acknowledges the support from NSF and AFOSR. M. S. D. acknowledges the support of NSF/DMR-10-04147.
原文出处	http://dx.doi.org/10.1063/1.4866415
语种	英语
WOS记录号	WOS:000332619100037
公开日期	2014-05-09
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/48784]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wang BL,Wu JT,Gu XK,et al. Stable planar single-layer hexagonal silicene under tensile strain and its anomalous Poisson[J]. Applied Physics Letter,2014,104(8):81902.
APA	Wang BL.,Wu JT.,Gu XK.,Yin HQ.,Wei YJ.,...&Dresselhaus M.(2014).Stable planar single-layer hexagonal silicene under tensile strain and its anomalous Poisson.Applied Physics Letter,104(8),81902.
MLA	Wang BL,et al."Stable planar single-layer hexagonal silicene under tensile strain and its anomalous Poisson".Applied Physics Letter 104.8(2014):81902.