Scaling law for strain dependence of Raman spectra in transition-metal dichalcogenides

Zhang, Ye1; Guo, Huaihong1; Sun, Wei1; Sun, Hongzhi1; Ali, Sajjad2,3; Zhang, Zhidong2; Saito, Riichiro4; Yang, Teng2

2020-06-16

10.1002/jrs.5908

JOURNAL OF RAMAN SPECTROSCOPY   影响因子和分区

0377-0486

1097-4555

Based on ab initio density functional calculation and nonresonant Raman theory, we calculate strain dependent Raman spectra of six kinds of transition-metal dichalcogenides (TMDCs). The biaxial strain dependence of Raman intensity and direct band gap in TMDC monolayers is systematically studied from which we show a scaling law of the Raman intensity and band gap. Out-of-planeA(1g)mode has vanishing intensity under a certain strain. Such a strain-induced behavior is found to be universal in the TMDC, and Raman intensity for the six TMDCs can be scaled as a function of Gruneissen parameter gamma and Raman wavenumbers in the frame of Morse-type function. The scaling behavior of Raman intensity and direct band gap in TMDCs indicates of some material-independent picture which can be used for new understanding of properties and design of new-type functional devices for electronic and optoelectronic application based on strain engineering.

intensity dip Raman intensity scaling strain effect TMDC

SCI ; EI

英语

其他

JSPS KAKENHI[JP18H01810] ; NSFC[51702146][U1537204] ; College Students' innovation and entrepreneurship projects[201710148000072]

Spectroscopy

Spectroscopy

WOS:000540447100001

WILEY

CHEMISTRY

Web of Science

1.Liaoning Shihua Univ, Coll Sci, Fushun 113001, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Southern Univ Sci & Technol, Dept Phys, Shenzhen, Peoples R China
4.Tohoku Univ, Dept Phys, Sendai, Miyagi, Japan

Zhang, Ye,Guo, Huaihong,Sun, Wei,et al. Scaling law for strain dependence of Raman spectra in transition-metal dichalcogenides[J]. JOURNAL OF RAMAN SPECTROSCOPY,2020,51(8):1353-1361.

Zhang, Ye.,Guo, Huaihong.,Sun, Wei.,Sun, Hongzhi.,Ali, Sajjad.,...&Yang, Teng.(2020).Scaling law for strain dependence of Raman spectra in transition-metal dichalcogenides.JOURNAL OF RAMAN SPECTROSCOPY,51(8),1353-1361.

Zhang, Ye,et al."Scaling law for strain dependence of Raman spectra in transition-metal dichalcogenides".JOURNAL OF RAMAN SPECTROSCOPY 51.8(2020):1353-1361.