Reconciling the bulk metallic and surface insulating state in 1T-TaSe2

doi:10.1103/PhysRevB.105.035110

	Reconciling the bulk metallic and surface insulating state in 1T-TaSe2
	Zhang, Wenhao 6; Wu, Zongxiu 6; Bu, Kunliang 6; Fei, Ying 6; Zheng, Yuan 6; Gao, Jingjing 1,5; Luo, Xuan 1; Liu, Zheng 4; Sun, Yu-Ping 1,2,3; Yin, Yi 2,6
刊名	PHYSICAL REVIEW B
	2022-01-06
卷号	105
ISSN号	2469-9950
DOI	10.1103/PhysRevB.105.035110
通讯作者	Yin, Yi(yiyin@zju.edu.cn)
英文摘要	The origin of different electronic states of 1T-TaS2 and 1T-TaSe2 remains controversial due to the complicated correlated electronic properties. We apply scanning tunneling microscopy to study the electronic state of bulk 1T-TaSe2. Both insulating and metallic states are identified in different areas of the same sample. The insulating state is similar to that in 1T-TaS2, concerning both the dI/dV spectrum and the orbital texture. With detailed investigations in single-step areas, the electronic state measured on the upper-layer surface is found to be associated with different stacking orders and the lower layer's electronic state. The insulating state is most possibly a single-layer property, perturbed to a metallic state by particular stacking orders. Both the metallic and large-gap insulating spectra, together with their corresponding stacking orders, are stable states in 1T-TaSe2. The connected metallic areas lead to the metallic transport behavior. We then reconcile the bulk metallic and surface insulating state in 1T-TaSe2. The rich phenomena in 1T-TaSe2 deepen our understanding of the correlated electronic state in bulk 1T-TaSe2 and 1T-TaS2.
资助项目	National Key Research and Development Program of China[2016YFA0300404] ; National Key Research and Development Program of China[2019YFA0308602] ; Key Research and Development Pro-gram of Zhejiang Province, China[2021C01002] ; Fundamental Research Funds for the Central Universities in China ; National Natural Science Foundation of China[NSFC-11674326] ; National Natural Science Foundation of China[NSFC11874357] ; National Natural Science Foundation of China[NSFC-11774196] ; National Natural Science Foundation of China[U1832141] ; National Natural Science Foundation of China[U1932217] ; National Natural Science Foundation of China[U2032215] ; Tsinghua University Initiative Scientific Research Program ; Chinese Academy of Sciences' Large-Scale Scientific Facility[U1832141] ; Chinese Academy of Sciences' Large-Scale Scientific Facility[U1932217] ; Chinese Academy of Sciences' Large-Scale Scientific Facility[U2032215]
WOS关键词	CHARGE-DENSITY WAVES ; SCANNING TUNNELING SPECTROSCOPY
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000742485400003
资助机构	National Key Research and Development Program of China ; Key Research and Development Pro-gram of Zhejiang Province, China ; Fundamental Research Funds for the Central Universities in China ; National Natural Science Foundation of China ; Tsinghua University Initiative Scientific Research Program ; Chinese Academy of Sciences' Large-Scale Scientific Facility
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127105]
专题	中国科学院合肥物质科学研究院
通讯作者	Yin, Yi
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 4.Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China 5.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230026, Peoples R China 6.Zhejiang Univ, Dept Phys, Zhejiang Prov Key Lab Quantum Technol & Devices, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wenhao,Wu, Zongxiu,Bu, Kunliang,et al. Reconciling the bulk metallic and surface insulating state in 1T-TaSe2[J]. PHYSICAL REVIEW B,2022,105.
APA	Zhang, Wenhao.,Wu, Zongxiu.,Bu, Kunliang.,Fei, Ying.,Zheng, Yuan.,...&Yin, Yi.(2022).Reconciling the bulk metallic and surface insulating state in 1T-TaSe2.PHYSICAL REVIEW B,105.
MLA	Zhang, Wenhao,et al."Reconciling the bulk metallic and surface insulating state in 1T-TaSe2".PHYSICAL REVIEW B 105(2022).