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Deep-ultraviolet Raman scattering spectroscopy of monolayer WS2
Liu, Hsiang-Lin1; Yang, Teng2,3; Tatsumi, Yuki3; Zhang, Ye4; Dong, Baojuan2; Guo, Huaihong3,4; Zhang, Zhidong2; Kumamoto, Yasuaki5,8; Li, Ming-Yang6,7; Li, Lain-Jong6; Saito, Riichiro3; Kawata, Satoshi5
Corresponding AuthorLiu, Hsiang-Lin(hliu@ntnu.edu.tw) ; Yang, Teng(yangteng@imr.ac.cn)
2018-07-30
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume8Pages:10
AbstractRaman scattering measurements of monolayer WS2 are reported as a function of the laser excitation energies from the near-infrared (1.58 eV) to the deep-ultraviolet (4.82 eV). In particular, we observed several strong Raman peaks in the range of 700 similar to 850 cm(-1) with the deep-ultraviolet laser lights (4.66 eV and 4.82 eV). Using the first-principles calculations, these peaks and other weak peaks were appropriately assigned by the double resonance Raman scattering spectra of phonons around the M and K points in the hexagonal Brillouin zone. The relative intensity of the first-order E-2g(1) to A(1g) peak changes dramatically with the 1.58 eV and 2.33 eV laser excitations, while the comparable relative intensity was observed for other laser energies. The disappearance of the E-2g(1) peak with the 1.58 eV laser light comes from the fact that valley polarization of the laser light surpasses the E-2g(1) mode since the E-g2(1) mode is the helicity-exchange Raman mode. On the other hand, the disappearance of the A(1g) peak with the 2.33 eV laser light might be due to the strain effect on the electron-phonon matrix element.
Funding OrganizationMinistry of Science and Technology of Republic of China ; Academia Sinica ; National Key R&D Program of China ; Major Program of Aerospace Advanced Manufacturing Technology Research Foundation NSFC ; CASC, China ; NSFC ; Liaoning Province Doctor Startup Fund ; Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology ; USA AFOSR BRI ; MEXT-Japan ; JSPS-Japan
DOI10.1038/s41598-018-29587-0
Indexed BySCI
Language英语
Funding ProjectMinistry of Science and Technology of Republic of China[MOST 105-2112-M-003-013-MY3] ; Academia Sinica[AS-105-TP-A03] ; National Key R&D Program of China[2017YFA0206301] ; Major Program of Aerospace Advanced Manufacturing Technology Research Foundation NSFC ; CASC, China[U1537204] ; NSFC[51702146] ; Liaoning Province Doctor Startup Fund[201601325] ; Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology ; USA AFOSR BRI[FA238615100015] ; MEXT-Japan[JP25107005] ; MEXT-Japan[JP15K21722] ; MEXT-Japan[JP18H01810] ; JSPS-Japan[JP21226003]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000440144400015
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128856
Collection中国科学院金属研究所
Corresponding AuthorLiu, Hsiang-Lin; Yang, Teng
Affiliation1.Natl Taiwan Normal Univ, Dept Phys, Taipei 11677, Taiwan
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
4.Liaoning Shihua Univ, Coll Sci, Fushun 113001, Peoples R China
5.Osaka Univ, Dept Appl Phys, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan
6.King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia
7.Acad Sinica, Res Ctr Appl Sci, Taipei 10617, Taiwan
8.Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Pathol & Cell Regulat, Kamigyo Ku, 465 Kajii Cho,Kawaramachi Hirokoji, Kyoto 6028566, Japan
Recommended Citation
GB/T 7714
Liu, Hsiang-Lin,Yang, Teng,Tatsumi, Yuki,et al. Deep-ultraviolet Raman scattering spectroscopy of monolayer WS2[J]. SCIENTIFIC REPORTS,2018,8:10.
APA Liu, Hsiang-Lin.,Yang, Teng.,Tatsumi, Yuki.,Zhang, Ye.,Dong, Baojuan.,...&Kawata, Satoshi.(2018).Deep-ultraviolet Raman scattering spectroscopy of monolayer WS2.SCIENTIFIC REPORTS,8,10.
MLA Liu, Hsiang-Lin,et al."Deep-ultraviolet Raman scattering spectroscopy of monolayer WS2".SCIENTIFIC REPORTS 8(2018):10.
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