Observation of topological states residing at step edges of WTe2
Peng, Lang1,2; Yuan, Yuan1,2; Li, Gang3,4; Yang, Xing1,2; Xian, Jing-Jing1,2; Yi, Chang-Jiang5; Shi, You-Guo5; Fu, Ying-Shuang1,2
2017-09-22
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
卷号8
发表状态已发表
DOI10.1038/s41467-017-00745-8
摘要Topological states emerge at the boundary of solids as a consequence of the nontrivial topology of the bulk. Recently, theory predicts a topological edge state on single layer transition metal dichalcogenides with 1T' structure. However, its existence still lacks experimental proof. Here, we report the direct observations of the topological states at the step edge of WTe2 by spectroscopic-imaging scanning tunneling microscopy. A one-dimensional electronic state residing at the step edge of WTe2 is observed, which exhibits remarkable robustness against edge imperfections. First principles calculations rigorously verify the edge state has a topological origin, and its topological nature is unaffected by the presence of the substrate. Our study supports the existence of topological edge states in 1T'-WTe2, which may envision in-depth study of its topological physics and device applications.
收录类别SCI
语种英语
资助项目National Science Foundation of China[11474112] ; National Science Foundation of China[11522431] ; National Science Foundation of China[11474330]
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000411526700004
出版者NATURE PUBLISHING GROUP
WOS关键词AUGMENTED-WAVE METHOD ; MONOLAYER 1T'-WTE2 ; MONOCLINIC MOTE2 ; TRANSITION ; INSULATORS ; METALS
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/9892
专题物质科学与技术学院_PI研究组_李刚组
通讯作者Li, Gang; Fu, Ying-Shuang
作者单位1.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China
2.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Hubei, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
4.Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria
5.Chinese Acad Sci, Inst Phys, Beijing 100084, Peoples R China
通讯作者单位物质科学与技术学院
推荐引用方式
GB/T 7714
Peng, Lang,Yuan, Yuan,Li, Gang,et al. Observation of topological states residing at step edges of WTe2[J]. NATURE COMMUNICATIONS,2017,8.
APA Peng, Lang.,Yuan, Yuan.,Li, Gang.,Yang, Xing.,Xian, Jing-Jing.,...&Fu, Ying-Shuang.(2017).Observation of topological states residing at step edges of WTe2.NATURE COMMUNICATIONS,8.
MLA Peng, Lang,et al."Observation of topological states residing at step edges of WTe2".NATURE COMMUNICATIONS 8(2017).
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