Effect of uniaxial strain on low frequency Raman modes in few layers molybdenum disulfide

Yanyong Li, Shenghuang Lin, Ying San Chui, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The effect of uniaxial tensile strain on the shear mode (C mode) and layer breathing mode (LB mode) of few layers MoS2 were studied. The C mode is doubly degenerated into two sub-peaks as applied strain increases. No measurable Raman shift for the LB mode is observed, while its Raman intensity decreases gradually as the strain increases. In addition, the C and LB modes exhibit distinguished thickness dependence. The C mode shows a clear blueshift as the strain increases, while the LB mode is softened in the process. Moreover, the evolution of C mode with thickness follows an enhanced linear-chain model plus a linear component very well. It implies that the C mode is a better thickness navigator as compared to the L mode.
Original languageEnglish
Pages (from-to)Q3033-Q3037
JournalECS Journal of Solid State Science and Technology
Volume5
Issue number11
DOIs
Publication statusPublished - 1 Jan 2016

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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