Chiral charge density waves induced by Ti-doping in 1T-TaS2

doi:10.1063/5.0052240

	Chiral charge density waves induced by Ti-doping in 1T-TaS2
	Gao, J. J.4,5; Zhang, W. H.1,4; Si, J. G.4,5; Luo, X.4; Yan, J.4,5; Jiang, Z. Z.4,5; Wang, W.4,5; Lv, H. Y.4; Tong, P.4; Song, W. H.4
刊名	APPLIED PHYSICS LETTERS
	2021-05-24
卷号	118
ISSN号	0003-6951
DOI	10.1063/5.0052240
通讯作者	Luo, X.(xluo@issp.ac.cn) ; Lu, W. J.(wjlu@issp.ac.cn) ; Yin, Y.(yiyin@zju.edu.cn) ; Sun, Y. P.(ypsun@issp.ac.cn)
英文摘要	We investigate the Ti-doping effect on the charge density wave (CDW) of 1T-TaS2 by combining scanning tunneling microscopy measurements and first-principle calculations. Although the Ti-doping induced phase evolution seems regular with an increase of the doping concentration (x), an unexpected chiral CDW phase is observed in the sample with x=0.08, in which Ti atoms almost fully occupy the central Ta atoms in the CDW clusters. The emergence of the chiral CDW is proposed to be from the doping-enhanced orbital order. Only when x=0.08, the possible long-range orbital order can trigger the chiral CDW phase. Compared with other 3d-elements doped 1T-TaS2, the Ti-doping retains the electronic flatband and the corresponding CDW phase, which is a prerequisite for the emergence of chirality. We expect that introducing elements with a strong orbital character may induce a chiral charge order in a broad class of CDW systems. The present results open up another avenue for further exploring the chiral CDW materials.
资助项目	National Key Research and Development Program[2016YFA0300404] ; National Key Research and Development Program[2019YFA0308602] ; Fundamental Research Funds for the Central Universities in China ; National Nature Science Foundation of China[11674326] ; National Nature Science Foundation of China[11874357] ; National Nature Science Foundation of China[11774351] ; National Nature Science Foundation of China[11974061] ; 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] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH015] ; Excellence and Scientific Research Grant of Hefei Science Center of CAS[2018HSC-UE011] ; Open Project of State Key Laboratory of Superhard Materials, Jilin University[201902] ; Joint Funds of the National Natural Science Foundation of China
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000681664200002
资助机构	National Key Research and Development Program ; Fundamental Research Funds for the Central Universities in China ; National Nature Science Foundation of China ; Chinese Academy of Sciences' Large-Scale Scientific Facility ; Key Research Program of Frontier Sciences, CAS ; Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Open Project of State Key Laboratory of Superhard Materials, Jilin University ; Joint Funds of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124293]
专题	中国科学院合肥物质科学研究院
通讯作者	Luo, X.; Lu, W. J.; Yin, Y.; Sun, Y. P.
作者单位	1.Zhejiang Univ, Dept Phys, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou 310027, Peoples R China 2.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, HFIPS, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China 4.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 5.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Gao, J. J.,Zhang, W. H.,Si, J. G.,et al. Chiral charge density waves induced by Ti-doping in 1T-TaS2[J]. APPLIED PHYSICS LETTERS,2021,118.
APA	Gao, J. J..,Zhang, W. H..,Si, J. G..,Luo, X..,Yan, J..,...&Sun, Y. P..(2021).Chiral charge density waves induced by Ti-doping in 1T-TaS2.APPLIED PHYSICS LETTERS,118.
MLA	Gao, J. J.,et al."Chiral charge density waves induced by Ti-doping in 1T-TaS2".APPLIED PHYSICS LETTERS 118(2021).