Weak dimensionality dependence of charge density wave transition in 2H-NbSe<sub>2</sub>

doi:10.1063/5.0172460

	Weak dimensionality dependence of charge density wave transition in 2H-NbSe₂
	Wang, Suofu 5,6; Hou, Xingyuan 5,6; Dong, Peng 4; Dong, Qingsong 5,6; Shi, Hongwei 5,6; Ju, Le 5,6; Hu, Xin 5,6; Hu, Xiaomei 5,6; Liu, Zhen 5,6; Han, Tao 5,6
刊名	APPLIED PHYSICS LETTERS
	2023-10-09
卷号	123
ISSN号	0003-6951
DOI	10.1063/5.0172460
通讯作者	Mu, Qing-Ge(mu@ahu.edu.cn) ; Li, Jun(lijun3@shanghaitech.edu.cn) ; Shan, Lei(lshan@ahu.edu.cn)
英文摘要	The effect of dimensionality on charge density wave (CDW) transition temperature (T-CDW) in 2H-NbSe2 is still under debate. Raman measurements uncovered highly enhanced T-CDW for few-layer samples, while scanning tunneling microscopy results suggest comparable value of bulk crystals. Here, we obtained high-quality crystals of 2H-NbSe2 with residual resistivity ratio up to 120 and processed thin flakes by mechanical exfoliation. Electrical resistance measurements were carried out on crystals with different thickness to monitor the dimensionality dependence of T-CDW, superconducting T-c, and upper critical field H-c2. It is revealed that when the bulk crystal evolves into few layers, the T-CDW only increases slightly, though the variations of T-c and upper critical field H-c2 are consistent with previous results. The observed weak dependence of long-range CDW order on dimensionality agrees well with the recent theoretical calculations on anharmonic spectra. These results reconcile experiment and theory, and thus shed light on the mechanism of CDW for thin flakes of 2H-NbSe2.
资助项目	This work was financially supported by the National Key Ramp;D Program of China (Grant Nos. 2018YFA0305602 and 2017YFA0302904), National Natural Science Foundation of China (Grant Nos. 12074002, 11804379, 61975224, 12104303, and 12204007), the Recruitment[2018YFA0305602] ; This work was financially supported by the National Key Ramp;D Program of China (Grant Nos. 2018YFA0305602 and 2017YFA0302904), National Natural Science Foundation of China (Grant Nos. 12074002, 11804379, 61975224, 12104303, and 12204007), the Recruitment[2017YFA0302904] ; National Key Ramp;D Program of China[12074002] ; National Key Ramp;D Program of China[11804379] ; National Key Ramp;D Program of China[61975224] ; National Key Ramp;D Program of China[12104303] ; National Key Ramp;D Program of China[12204007] ; National Natural Science Foundation of China[2019-16] ; Recruitment Program for Leading Talent Team of Anhui Province ; Project of Introduction and Cultivation for Young Innovative Talents in Colleges and Universities of Shandong Province[20ZR1436100] ; Natural Science Foundation of Shanghai ; Science and Technology Commission of Shanghai Municipality, Beijing National Laboratory for Condensed Matter Physics[WHMFC202124] ; Interdisciplinary Program of Wuhan National High Magnetic Field Center
WOS关键词	TRANSPORT-PROPERTIES ; SUPERCONDUCTIVITY ; ORDER ; SPIN
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:001083992300005
资助机构	This work was financially supported by the National Key Ramp;D Program of China (Grant Nos. 2018YFA0305602 and 2017YFA0302904), National Natural Science Foundation of China (Grant Nos. 12074002, 11804379, 61975224, 12104303, and 12204007), the Recruitment ; National Key Ramp;D Program of China ; National Natural Science Foundation of China ; Recruitment Program for Leading Talent Team of Anhui Province ; Project of Introduction and Cultivation for Young Innovative Talents in Colleges and Universities of Shandong Province ; Natural Science Foundation of Shanghai ; Science and Technology Commission of Shanghai Municipality, Beijing National Laboratory for Condensed Matter Physics ; Interdisciplinary Program of Wuhan National High Magnetic Field Center
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/133354]
专题	中国科学院合肥物质科学研究院
通讯作者	Mu, Qing-Ge; Li, Jun; Shan, Lei
作者单位	1.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, State Key Lab Funct Mat Informat, Shanghai Inst Microsyst & Informat Technol, 865 Changning Rd, Shanghai 200050, Peoples R China 3.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, HFIPS, Hefei 230031, Anhui, Peoples R China 4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 5.Anhui Univ, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China 6.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Wang, Suofu,Hou, Xingyuan,Dong, Peng,et al. Weak dimensionality dependence of charge density wave transition in 2H-NbSe₂[J]. APPLIED PHYSICS LETTERS,2023,123.
APA	Wang, Suofu.,Hou, Xingyuan.,Dong, Peng.,Dong, Qingsong.,Shi, Hongwei.,...&Shan, Lei.(2023).Weak dimensionality dependence of charge density wave transition in 2H-NbSe₂.APPLIED PHYSICS LETTERS,123.
MLA	Wang, Suofu,et al."Weak dimensionality dependence of charge density wave transition in 2H-NbSe₂".APPLIED PHYSICS LETTERS 123(2023).