Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2

doi:10.1038/s41467-023-36857-7

	Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2
	Song, Yekai 1,2; Jia, Chunjing 3,4; Xiong, Hongyu 3,5,6; Wang, Binbin7 ; Jiang, Zhicheng 1; Huang, Kui7 ; Hwang, Jinwoong 5,8,9; Li, Zhuojun 1,2; Hwang, Choongyu 10; Liu, Zhongkai7 ; Shen, Dawei 1,11; Sobota, Jonathan A.3,5; Kirchmann, Patrick 3,5; Xue, Jiamin7 ; Devereaux, Thomas P.3,5; Mo, Sung-Kwan 8; Shen, Zhi-Xun 3,5; Tang, Shujie 1,2
	2023-12-01
发表期刊	NATURE COMMUNICATIONS; (IF:14.7[JCR-2023],16.1[5-Year])
ISSN	2041-1723
EISSN	2041-1723
卷号	14 期号:1
发表状态	已发表
DOI	10.1038/s41467-023-36857-7
摘要	The excitonic insulator (EI) is a Bose-Einstein condensation (BEC) of excitons bound by electron-hole interaction in a solid, which could support high-temperature BEC transition. The material realization of EI has been challenged by the difficulty of distinguishing it from a conventional charge density wave (CDW) state. In the BEC limit, the preformed exciton gas phase is a hallmark to distinguish EI from conventional CDW, yet direct experimental evidence has been lacking. Here we report a distinct correlated phase beyond the 2×2 CDW ground state emerging in monolayer 1T-ZrTe2 and its investigation by angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). The results show novel band- and energy-dependent folding behavior in a two-step process, which is the signatures of an exciton gas phase prior to its condensation into the final CDW state. Our findings provide a versatile two-dimensional platform that allows tuning of the excitonic effect.
学科门类	Chemistry (all) ; Biochemistry, Genetics and Molecular Biology (all) ; Multidisciplinary ; Physics and Astronomy (all)
URL	查看原文
收录类别	SCOPUS ; SCI
语种	英语
资助项目	National Key R&D Program of China[2021YDA1401500] ; Strategic Priority Research Program (B)' of the Chinese Academy of Sciences[XDB04010600] ; National Natural Science Foundation of China["11704395","11974370","11227902","U2032208"] ; Shanghai Rising-Star Program["20QA1411000","22YF1456200"] ; Chinese Academy of Sciences[JCPYJJ-2015] ; NRF - Korean government (MSIT)["2020K1A3A7A09080369","2021R1A2C1004266"] ; Shanghai Postdoctoral Excellence Program[2021421] ; Office of Basic Energy Sciences, US DOE["DE-AC02-76SF00515","DE-AC02-05CH11231"] ; U.S. Department of Energy, Office of Science[DE-AC02-05CH11231]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000942107800018
出版者	NATURE PORTFOLIO
原始文献类型	Article
Scopus 记录号	2-s2.0-85148969065
来源库	SCOPUS
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/286487
专题	物质科学与技术学院物质科学与技术学院_PI研究组_薛加民组物质科学与技术学院_PI研究组_柳仲楷组物质科学与技术学院_博士生
通讯作者	Mo, Sung-Kwan; Shen, Zhi-Xun; Tang, Shujie
作者单位	1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, 2020 X Lab, Shanghai, Peoples R China 3.SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA 4.Univ Florida, Dept Phys, Gainesville, FL USA 5.Stanford Univ, Dept Phys & Appl Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA 6.Shanghai Jiao Tong Univ, Sch Mech Engn, Key Lab Power Machinery & Engn MOE, Shanghai, Peoples R China 7.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 8.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA 9.Kangwon Natl Univ, Dept Phys, Chunchon, South Korea 10.Pusan Natl Univ, Dept Phys, Busan, South Korea 11.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Song, Yekai,Jia, Chunjing,Xiong, Hongyu,et al. Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2[J]. NATURE COMMUNICATIONS;,2023,14(1).
APA	Song, Yekai.,Jia, Chunjing.,Xiong, Hongyu.,Wang, Binbin.,Jiang, Zhicheng.,...&Tang, Shujie.(2023).Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2.NATURE COMMUNICATIONS;,14(1).
MLA	Song, Yekai,et al."Signatures of the exciton gas phase and its condensation in monolayer 1T-ZrTe2".NATURE COMMUNICATIONS; 14.1(2023).