Possible strain induced Mott gap collapse in 1T-TaS2

	Possible strain induced Mott gap collapse in 1T-TaS2
	Bu, Kunliang 1; Zhang, Wenhao 1; Fei, Ying 1; Wu, Zongxiu 1; Zheng, Yuan 1; Gao, Jingjing 4; Luo, Xuan 4; Sun, YuPing 4; Yin, Yi 1
刊名	COMMUNICATIONS PHYSICS
	2019
卷号	2
ISSN号	2399-3650
英文摘要	Tuning the electronic properties of a matter is of fundamental interest in scientific research as well as in applications. Recently, the Mott insulator-metal transition has been reported in a pristine layered transition metal dichalcogenide 1T-TaS2, with the transition triggered by an optical excitation, a gate controlled intercalation, or a voltage pulse. However, the sudden insulator-metal transition hinders an exploration of how the transition evolves. Here, we report the strain as a possible new tuning parameter to induce Mott gap collapse in 1T-TaS2. In a strain-rich area, we find a mosaic state with distinct electronic density of states within different domains. In a corrugated surface, we further observe and analyze a smooth evolution from a Mott gap state to a metallic state. Our results shed new lights on the understanding of the insulator-metal transition and promote a controllable strain engineering on the design of switching devices in the future.
资助项目	[National Basic Research Program of China] ; [National Natural Science Foundation of China] ; [Fundamental Research Funds for the Central Universities in China] ; [National Key Research and Development Program] ; [National Nature Science Foundation of China] ; [Chinese Academy of Sciences' Large-Scale Scientific Facility]
语种	英语
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124185]
专题	中国科学院合肥物质科学研究院
作者单位	1.Zhejiang University 2.Nanjing University 3.University of Science & Technology of China, CAS 4.Hefei Institutes of Physical Science, Chinese Academy of Sciences 5.Chinese Academy of Sciences High Magnet Field Lab
推荐引用方式 GB/T 7714	Bu, Kunliang,Zhang, Wenhao,Fei, Ying,et al. Possible strain induced Mott gap collapse in 1T-TaS2[J]. COMMUNICATIONS PHYSICS,2019,2.
APA	Bu, Kunliang.,Zhang, Wenhao.,Fei, Ying.,Wu, Zongxiu.,Zheng, Yuan.,...&Yin, Yi.(2019).Possible strain induced Mott gap collapse in 1T-TaS2.COMMUNICATIONS PHYSICS,2.
MLA	Bu, Kunliang,et al."Possible strain induced Mott gap collapse in 1T-TaS2".COMMUNICATIONS PHYSICS 2(2019).