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Tunable inverted gap in monolayer quasi-metallic MoS2 induced by strong charge-lattice coupling
Yin, Xinmao1,2,3; Wang, Qixing2; Cao, Liang2,4; Tang, Chi Sin2,5; Luo, Xin2,6,7,8; Zheng, Yujie2; Wong, Lai Mun9; Wang, Shi Jie9; Quek, Su Ying2,6,7; Zhang, Wenjing1; Rusydi, Andrivo2,3,5,10; Wee, Andrew T. S.2,5,6,7
2017-09-07
Source PublicationNATURE COMMUNICATIONS
Volume8
AbstractPolymorphism of two-dimensional transition metal dichalcogenides such as molybdenum disulfide (MoS2) exhibit fascinating optical and transport properties. Here, we observe a tunable inverted gap (similar to 0.50 eV) and a fundamental gap (similar to 0.10 eV) in quasimetallic monolayer MoS2. Using spectral-weight transfer analysis, we find that the inverted gap is attributed to the strong charge-lattice coupling in two-dimensional transition metal dichalcogenides ( 2D-TMDs). A comprehensive experimental study, supported by theoretical calculations, is conducted to understand the transition of monolayer MoS2 on gold film from trigonal semiconducting 1H phase to the distorted octahedral quasimetallic 1T' phase. We clarify that electron doping from gold, facilitated by interfacial tensile strain, is the key mechanism leading to its 1H-1T' phase transition, thus resulting in the formation of the inverted gap. Our result shows the importance of charge-lattice coupling to the intrinsic properties of the inverted gap and polymorphism of MoS2, thereby unlocking new possibilities for 2D-TMD-based device fabrication.
SubtypeArticle
WOS HeadingsScience & Technology
Funding OrganizationNational Natural Science Foundation of China(51472164) ; National Natural Science Foundation of China(51472164) ; Natural Science Foundation of SZU(000050) ; Natural Science Foundation of SZU(000050) ; 1000 Talents Program for Young Scientists of China ; 1000 Talents Program for Young Scientists of China ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; China Postdoctoral Science Foundation(2016M600664) ; China Postdoctoral Science Foundation(2016M600664) ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; MOE(MOE2015-T2-1-099 ; MOE(MOE2015-T2-1-099 ; PHC Merlion Project ; PHC Merlion Project ; FRC(R-144-000-368-112 ; FRC(R-144-000-368-112 ; NRF-CRP15-2015-01) ; NRF-CRP15-2015-01) ; MOE2015-T2-2-147) ; MOE2015-T2-2-147) ; R-144-000-346-112 ; R-144-000-346-112 ; R-144-000-364-112) ; R-144-000-364-112) ; National Natural Science Foundation of China(51472164) ; National Natural Science Foundation of China(51472164) ; Natural Science Foundation of SZU(000050) ; Natural Science Foundation of SZU(000050) ; 1000 Talents Program for Young Scientists of China ; 1000 Talents Program for Young Scientists of China ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; China Postdoctoral Science Foundation(2016M600664) ; China Postdoctoral Science Foundation(2016M600664) ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; MOE(MOE2015-T2-1-099 ; MOE(MOE2015-T2-1-099 ; PHC Merlion Project ; PHC Merlion Project ; FRC(R-144-000-368-112 ; FRC(R-144-000-368-112 ; NRF-CRP15-2015-01) ; NRF-CRP15-2015-01) ; MOE2015-T2-2-147) ; MOE2015-T2-2-147) ; R-144-000-346-112 ; R-144-000-346-112 ; R-144-000-364-112) ; R-144-000-364-112)
DOI10.1038/s41467-017-00640-2
WOS KeywordLAYER MOLYBDENUM-DISULFIDE ; CHEMICAL-VAPOR-DEPOSITION ; PHASE-TRANSITION ; ELECTRONIC-STRUCTURE ; ATOMIC LAYERS ; THIN-FILMS ; MOTE2 ; SUPERCONDUCTIVITY ; HETEROSTRUCTURES ; DICHALCOGENIDES
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(51472164) ; National Natural Science Foundation of China(51472164) ; Natural Science Foundation of SZU(000050) ; Natural Science Foundation of SZU(000050) ; 1000 Talents Program for Young Scientists of China ; 1000 Talents Program for Young Scientists of China ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; China Postdoctoral Science Foundation(2016M600664) ; China Postdoctoral Science Foundation(2016M600664) ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; MOE(MOE2015-T2-1-099 ; MOE(MOE2015-T2-1-099 ; PHC Merlion Project ; PHC Merlion Project ; FRC(R-144-000-368-112 ; FRC(R-144-000-368-112 ; NRF-CRP15-2015-01) ; NRF-CRP15-2015-01) ; MOE2015-T2-2-147) ; MOE2015-T2-2-147) ; R-144-000-346-112 ; R-144-000-346-112 ; R-144-000-364-112) ; R-144-000-364-112) ; National Natural Science Foundation of China(51472164) ; National Natural Science Foundation of China(51472164) ; Natural Science Foundation of SZU(000050) ; Natural Science Foundation of SZU(000050) ; 1000 Talents Program for Young Scientists of China ; 1000 Talents Program for Young Scientists of China ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Shenzhen Peacock Plan(KQTD2016053112042971) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Educational Commission of Guangdong Province(2015KGJHZ006) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; Science and Technology Planning Project of Guangdong Province(2016B050501005) ; China Postdoctoral Science Foundation(2016M600664) ; China Postdoctoral Science Foundation(2016M600664) ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; Singapore National Research Foundation(NRF-CRP8-2011-06 ; MOE(MOE2015-T2-1-099 ; MOE(MOE2015-T2-1-099 ; PHC Merlion Project ; PHC Merlion Project ; FRC(R-144-000-368-112 ; FRC(R-144-000-368-112 ; NRF-CRP15-2015-01) ; NRF-CRP15-2015-01) ; MOE2015-T2-2-147) ; MOE2015-T2-2-147) ; R-144-000-346-112 ; R-144-000-346-112 ; R-144-000-364-112) ; R-144-000-364-112)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000409997500020
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33695
Collection中科院强磁场科学中心
Affiliation1.Shenzhen Univ, SZU NUS Collaborat Innovat Ctr Optoelect Sci & Te, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov,Coll Optoelect Engn, Shenzhen 518060, Peoples R China
2.Natl Univ Singapore, Dept Phys, Fac Sci, Singapore 117542, Singapore
3.Natl Univ Singapore, SSLS, Singapore 117603, Singapore
4.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China
5.Natl Univ Singapore, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore
6.Natl Univ Singapore, Ctr Adv Mat 2D, Singapore 117551, Singapore
7.Natl Univ Singapore, Graphene Res Ctr, Singapore 117551, Singapore
8.Hong Kong Polytech Univ, Dept Appl Phys, Kowloon 999077, Hong Kong, Peoples R China
9.ASTAR, IMRE, 2 Fusionopolis Way, Innovis 138634, Singapore
10.Natl Univ Singapore, NUSNNI NanoCore, Singapore 117576, Singapore
Recommended Citation
GB/T 7714
Yin, Xinmao,Wang, Qixing,Cao, Liang,et al. Tunable inverted gap in monolayer quasi-metallic MoS2 induced by strong charge-lattice coupling[J]. NATURE COMMUNICATIONS,2017,8.
APA Yin, Xinmao.,Wang, Qixing.,Cao, Liang.,Tang, Chi Sin.,Luo, Xin.,...&Wee, Andrew T. S..(2017).Tunable inverted gap in monolayer quasi-metallic MoS2 induced by strong charge-lattice coupling.NATURE COMMUNICATIONS,8.
MLA Yin, Xinmao,et al."Tunable inverted gap in monolayer quasi-metallic MoS2 induced by strong charge-lattice coupling".NATURE COMMUNICATIONS 8(2017).
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