南方科技大学知识苑(SUSTech KC): Oxidation-Induced Topological Phase Transition in Monolayer 1T '-WTe2

题名	Oxidation-Induced Topological Phase Transition in Monolayer 1T '-WTe2
作者	Yang, Jiali 1,2,3,4; Jin, Yuanjun 3,4; Xu, Wangping 3,4; Zheng, Baobing3,4,5,6 ; Wang, Rui1,2,3,4 ; Xu, Hu3,4
通讯作者	Zheng, Baobing; Wang, Rui; Xu, Hu
发表日期	2018-08-16
DOI	10.1021/acs.jpclett.8b01999
发表期刊	Journal of Physical Chemistry Letters 影响因子和分区
ISSN	1948-7185
卷号	9 期号:16页码:4783-4788
摘要	Monolayer (ML) tungsten ditelluride (WTe2) is a well-known quantum spin Hall (QSH) insulator with topologically protected gapless edge states, thus promising dissipationless electronic devices. However, experimental findings exhibit the fast oxidation of ML WTe2 in ambient conditions. To reveal the changes of topological properties of WTe2 arising from oxidation, we systematically study the surface oxidation reaction of ML 1T'-WTe2 using first-principles calculations. The calculated results indicate that the fast oxidation of WTe2 originates from the existence of H2O in air, which significantly promotes the oxidation of ML 1T'-WTe2. More importantly, this low-coverage oxidized WTe2 loses its topological features and is changed into a trivial insulator. Furthermore, we propose a fully oxidized ML WTe2 that can still possess the QSH insulator states. The topological phase transition induced by oxidation provides exotic insight into understanding the topological features of layered transition-metal dichalcogenide materials.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
重要成果	NI期刊
学校署名	通讯
资助项目	Scientific Research Program - Shaanxi Provincial Education Department[17JK0041]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000442446900048
出版者	AMER CHEMICAL SOC
EI入藏号	20183405728074
EI主题词	Calculations ; Monolayers ; Oxidation ; Quantum theory ; Surface reactions ; Topology ; Transition metals ; Tungsten compounds
EI分类号	Metallurgy and Metallography:531 ; Chemical Reactions:802.2 ; Mathematics:921 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Quantum Theory; Quantum Mechanics:931.4
来源库	Web of Science
引用统计	被引频次[WOS]：21
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/27363
专题	理学院_物理系量子科学与工程研究院
作者单位	1.Chongqing Univ, Inst Struct & Funct, Chongqing 400044, Peoples R China 2.Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China 3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 4.Southern Univ Sci & Technol, Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 5.Baoji Univ Arts & Sci, Coll Phys & Optoelect Technol, Nonlinear Res Inst, Baoji 721016, Peoples R China 6.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China
第一作者单位	物理系; 量子科学与工程研究院
通讯作者单位	物理系; 量子科学与工程研究院
推荐引用方式 GB/T 7714	Yang, Jiali,Jin, Yuanjun,Xu, Wangping,et al. Oxidation-Induced Topological Phase Transition in Monolayer 1T '-WTe2[J]. Journal of Physical Chemistry Letters,2018,9(16):4783-4788.
APA	Yang, Jiali,Jin, Yuanjun,Xu, Wangping,Zheng, Baobing,Wang, Rui,&Xu, Hu.(2018).Oxidation-Induced Topological Phase Transition in Monolayer 1T '-WTe2.Journal of Physical Chemistry Letters,9(16),4783-4788.
MLA	Yang, Jiali,et al."Oxidation-Induced Topological Phase Transition in Monolayer 1T '-WTe2".Journal of Physical Chemistry Letters 9.16(2018):4783-4788.