Revealing of intrinsic intralayer phonon coupling by polarization-resolved analysis in monolayer MoS2

Teng De Huang, Kristan Bryan Simbulan, Yann Wen Lan, Ting Hua Lu

研究成果: 書貢獻/報告類型會議論文篇章

摘要

The effects of the peculiar in-plane lattice vibrations in monolayer molybdenum disulfide (MoS2) are oftentimes ignored in the analysis of the material's lattice behaviors due to the lack of variation of polarization for the excitation light. In this work, we have observed variations in the relative intensity of the two most dominant Raman peaks of MoS2 via polarized micro-Raman spectroscopy using elliptically polarized incident light. The asymmetry of the incident excitation light gives an additional degree of freedom affecting the relationship between the x- (E12gx) and y- (E12gy) components of the material's in-plane lattice vibrations. Different ratio of the magnitudes for E12gx and E12gy in the lattice vibrations can be induced by changing the polarization state of the incident light. This work investigates the material's unexplored fundamental phonon property which may enlighten past and future studies involving phonon behaviors.

原文英語
主出版物標題Low-Dimensional Materials and Devices 2019
編輯Nobuhiko P. Kobayashi, A. Alec Talin, Albert V. Davydov
發行者SPIE
ISBN(電子)9781510628632
DOIs
出版狀態已發佈 - 2019 一月 1
事件Low-Dimensional Materials and Devices 2019 - San Diego, 美国
持續時間: 2019 八月 112019 八月 13

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
11085
ISSN(列印)0277-786X
ISSN(電子)1996-756X

會議

會議Low-Dimensional Materials and Devices 2019
國家/地區美国
城市San Diego
期間2019/08/112019/08/13

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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