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

doi:10.1117/12.2528678

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

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English
Title of host publication	Low-Dimensional Materials and Devices 2019
Editors	Nobuhiko P. Kobayashi, A. Alec Talin, Albert V. Davydov
Publisher	SPIE
ISBN (Electronic)	9781510628632
DOIs	https://doi.org/10.1117/12.2528678
Publication status	Published - 2019
Event	Low-Dimensional Materials and Devices 2019 - San Diego, United States Duration: 2019 Aug 11 → 2019 Aug 13

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11085
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Low-Dimensional Materials and Devices 2019
Country/Territory	United States
City	San Diego
Period	2019/08/11 → 2019/08/13

Keywords

Light-matter interaction
Phonon
Polarization
Raman spectroscopy
Transition metal dichalcogenide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2528678

Cite this

Huang, T. D., Simbulan, K. B., Lan, Y. W., & Lu, T. H. (2019). Revealing of intrinsic intralayer phonon coupling by polarization-resolved analysis in monolayer MoS₂. In N. P. Kobayashi, A. A. Talin, & A. V. Davydov (Eds.), Low-Dimensional Materials and Devices 2019 Article 110850Y (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11085). SPIE. https://doi.org/10.1117/12.2528678

Revealing of intrinsic intralayer phonon coupling by polarization-resolved analysis in monolayer MoS₂. / Huang, Teng De; Simbulan, Kristan Bryan; Lan, Yann Wen et al.
Low-Dimensional Materials and Devices 2019. ed. / Nobuhiko P. Kobayashi; A. Alec Talin; Albert V. Davydov. SPIE, 2019. 110850Y (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11085).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Huang, TD, Simbulan, KB, Lan, YW & Lu, TH 2019, Revealing of intrinsic intralayer phonon coupling by polarization-resolved analysis in monolayer MoS₂. in NP Kobayashi, AA Talin & AV Davydov (eds), Low-Dimensional Materials and Devices 2019., 110850Y, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11085, SPIE, Low-Dimensional Materials and Devices 2019, San Diego, United States, 2019/08/11. https://doi.org/10.1117/12.2528678

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abstract = "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.",

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AB - 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.

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