Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material

doi:10.1021/acs.nanolett.1c04514

	Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material
	Walker, Sean M.2,8; Patel, Tarun 2,3; Okamoto, Junichi 4,5; Langenberg, Deler 2; Bergeron, E. Annelise 2,3; Gao, Jingjing 6; Luo, Xuan 6; Lu, Wenjian 6; Sun, Yuping 1,6,7; Tsen, Adam W.2,8
刊名	NANO LETTERS
	2022-03-09
卷号	22
关键词	two-dimensional materials charge density wave phase separation scanning tunneling microscopy
ISSN号	1530-6984
DOI	10.1021/acs.nanolett.1c04514
通讯作者	Walker, Sean M.(s4walker@uwaterloo.ca) ; Baugh, Jonathan(baugh@uwaterloo.ca)
英文摘要	The 1T polytype of TaS2 has been studied extensively as a strongly correlated system. As 1T-TaS2 is thinned toward the 2D limit, its phase diagram shows significant deviations from that of the bulk material. Optoelectronic maps of ultrathin 1T-TaS2 have indicated the presence of nonequilibrium charge density wave phases within the hysteresis region of the nearly commensurate (NC) to commensurate (C) transition. We perform scanning tunneling microscopy on exfoliated ultrathin flakes of 1T-TaS2 within the NC-C hysteresis window, finding evidence that the observed nonequilibrium phases consist of intertwined, irregularly shaped NC-like and C-like domains. After applying lateral electrical signals to the sample, we image changes in the geometric arrangement of the different regions. We use a phase separation model to explore the relationship between electronic inhomogeneity present in ultrathin 1T-TaS2 and its bulk resistivity. These results demonstrate the role of phase competition morphologies in determining the properties of 2D materials.
资助项目	Canada First Research Excellence Fund ; Georg H. Endress Foundation ; National Natural Science Foundation of China[11674326] ; National Natural Science Foundation of China[11874357] ; National Natural Science Foundation of China[U1832141] ; National Natural Science Foundation of China[U1932217] ; National Natural Science Foundation of China[U2032215] ; 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[QYZDBSSW-SLH015] ; Excellence and Scientific Research Grant of Hefei Science Center of CAS[2018HSC-UE011] ; US Army Research Office[W911NF-21-2-0136] ; Ontario Early Researcher Award[ER17-13-199] ; Natural Science and Engineering Research Council of Canada (NSERC)[RGPIN-2017-03815]
WOS关键词	SCANNING-TUNNELING-MICROSCOPY ; X-RAY ; TRANSITION ; 1T-TAS2
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000795031700014
资助机构	Canada First Research Excellence Fund ; Georg H. Endress Foundation ; National Natural 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 ; US Army Research Office ; Ontario Early Researcher Award ; Natural Science and Engineering Research Council of Canada (NSERC)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130945]
专题	中国科学院合肥物质科学研究院
通讯作者	Walker, Sean M.; Baugh, Jonathan
作者单位	1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 2.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada 3.Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada 4.Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany 5.Univ Freiburg, EUCOR Ctr Quantum Sci & Quantum Comp, D-79104 Freiburg, Germany 6.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 7.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 8.Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
推荐引用方式 GB/T 7714	Walker, Sean M.,Patel, Tarun,Okamoto, Junichi,et al. Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material[J]. NANO LETTERS,2022,22.
APA	Walker, Sean M..,Patel, Tarun.,Okamoto, Junichi.,Langenberg, Deler.,Bergeron, E. Annelise.,...&Baugh, Jonathan.(2022).Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material.NANO LETTERS,22.
MLA	Walker, Sean M.,et al."Observation and Manipulation of a Phase Separated State in a Charge Density Wave Material".NANO LETTERS 22(2022).