Composition and temperature-dependent phase transition in miscible Mo1-xWxTe2 single crystals

doi:10.1038/srep44587

	Composition and temperature-dependent phase transition in miscible Mo1-xWxTe2 single crystals
	Lv, Yang-Yang 1,2; Cao, Lin 1,2; Li, Xiao 1,3; Zhang, Bin-Bin 1,2; Wang, Kang 1,3; Pang, Bin 1,2; Ma, Ligang 1,3; Lin, Dajun 1,2; Yao, Shu-Hua 1,2; Zhou, Jian 1,2; Chen, Y. B.1,3; Dong, Song-Tao 4; Liu, Wenchao 1,2,5,6; Lu, Ming-Hui 1,2; Chen, Yulin7,8,9 ; Chen, Yan-Feng 1,2,10
	2017-03-15
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	7
发表状态	已发表
DOI	10.1038/srep44587
摘要	Transition metal dichalcogenides (TMDs) WTe2 and MoTe2 with orthorhombic Td phase, being potential candidates as type-II Weyl semimetals, are attracted much attention recently. Here we synthesized a series of miscible Mo1-xWxTe2 single crystals by bromine vapor transport method. Composition-dependent X-ray diffraction and Raman spectroscopy, as well as composition and temperature-dependent resistivity prove that the tunable crystal structure (from hexagonal (2H), monoclinic (beta) to orthorhombic (Td) phase) can be realized by increasing W content in Mo1-xWxTe2. Simultaneously the electrical property gradually evolves from semiconductor to semimetal behavior. Temperature-dependent Raman spectroscopy proves that temperature also can induce the structural phase transition from beta to Td phase in Mo1-xWxTe2 crystals. Based on aforementioned characterizations, we map out the temperature and composition dependent phase diagram of Mo1-xWxTe2 system. In addition, a series of electrical parameters, such as carrier type, carrier concentration and mobility, have also been presented. This work offers a scheme to accurately control structural phase in Mo1-xWxTe2 system, which can be used to explore type-II Weyl semimetal, as well as temperature/composition controlled topological phase transition therein.
收录类别	SCI
语种	英语
资助项目	Graduate Innovation Fund of Nanjing University[2015CL11]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000396342100001
出版者	NATURE PUBLISHING GROUP
WOS关键词	WEYL FERMION SEMIMETAL ; MAGNETORESISTANCE ; STATE ; SUPERCONDUCTIVITY ; RESISTIVITY ; DISCOVERY ; MOTE2
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1470
专题	物质科学与技术学院_特聘教授组_陈宇林
通讯作者	Yao, Shu-Hua; Zhou, Jian; Chen, Y. B.
作者单位	1.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 4.Jiangsu Univ Sci & Technol, Inst Mat Sci & Engn, Zhenjiang 212003, Peoples R China 5.Nanjing Tech Univ, IAM, Nanjing 211800, Jiangsu, Peoples R China 6.Nanjing Tech Univ, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Nanjing 211800, Jiangsu, Peoples R China 7.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 8.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China 9.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 10.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Lv, Yang-Yang,Cao, Lin,Li, Xiao,et al. Composition and temperature-dependent phase transition in miscible Mo1-xWxTe2 single crystals[J]. SCIENTIFIC REPORTS,2017,7.
APA	Lv, Yang-Yang.,Cao, Lin.,Li, Xiao.,Zhang, Bin-Bin.,Wang, Kang.,...&Chen, Yan-Feng.(2017).Composition and temperature-dependent phase transition in miscible Mo1-xWxTe2 single crystals.SCIENTIFIC REPORTS,7.
MLA	Lv, Yang-Yang,et al."Composition and temperature-dependent phase transition in miscible Mo1-xWxTe2 single crystals".SCIENTIFIC REPORTS 7(2017).