Article The optical response of artificially twisted MoS$$_2$$ bilayers

M. Grzeszczyk ; J. Szpakowski ; A. O. Slobodeniuk ; T. Kazimierczuk ; M. Bhatnagar ; T. Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; K. Watanabe SAMURAI ORCID (National Institute for Materials Science) ; P. Kossacki ; M. Potemski ; A. Babiński ; M. R. Molas

s41598-021-95700-5.pdf
Download file (1.64 MB)
Download as zip (1.34 MB)
Collection

Citation
M. Grzeszczyk, J. Szpakowski, A. O. Slobodeniuk, T. Kazimierczuk, M. Bhatnagar, T. Taniguchi, K. Watanabe, P. Kossacki, M. Potemski, A. Babiński, M. R. Molas. The optical response of artificially twisted MoS$$_2$$ bilayers. Scientific Reports. 2021, 11 (1), 17037.
SAMURAI

Description:

(abstract)

Two-dimensional layered materials offer the possibility to create artificial vertically stacked structures possessing an additional degree of freedom – the interlayer twist. We present a comprehensive optical study of artificially stacked bilayers (BLs) MoS2 encapsulated in hexagonal BN with interlayer twist angle ranging from 0 to 60 degrees using Raman scattering and photoluminescence spectroscopies. It is found that the strength of the interlayer coupling in the studied BLs can be estimated using the energy dependence of indirect emission versus the A1g-E12g energy separation. Due to the hybridization of electronic states in the valence band, the emission line related to the interlayer exciton is apparent in both the natural (2H) and artificial (62º) MoS2 BLs, while it is absent in the structures with other twist angles. The interlayer coupling energy is estimated to be of about 50 meV. The effect of temperature on energies and intensities of the direct and indirect emission lines in MoS2 bilayers is also quantified.

Rights:

Keyword: Interlayer twist, MoS2, Raman scattering

Date published: 2021-08-23

Publisher: Springer Science and Business Media LLC

Journal:

  • Scientific Reports (ISSN: 20452322) vol. 11 issue. 1 17037

Funding:

  • Narodowe Centrum Nauki 2017/27/B/ST3/00205
  • Narodowe Centrum Nauki 2017/27/N/ST3/01612
  • Fundacja na rzecz Nauki Polskiej ATOMOPTO
  • Narodowe Centrum Nauki 2018/31/B/ST3/02111
  • MEXT | JST | Core Research for Evolutional Science and Technology JPMJCR15F3
  • MEXT | JST | Core Research for Evolutional Science and Technology JPMJCR15F3
  • Fundacja na rzecz Nauki Polskiej ATOMOPTO
  • Fundacja na rzecz Nauki Polskiej ATOMOPTO
  • Narodowe Centrum Nauki 2017/27/N/ST3/01612
  • Narodowe Centrum Nauki 2018/31/B/ST3/02111)

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s41598-021-95700-5

Related item:

Other identifier(s):

Contact agent:

Updated at: 2025-03-01 08:30:17 +0900

Published on MDR: 2025-03-01 08:30:17 +0900

Filename Size
Filename s41598-021-95700-5.pdf (Thumbnail)
application/pdf 		Size 1.64 MB Detail