Helicity-resolved Raman scattering of MoS2 bulk crystal

被引：0
|
作者：
Yang, Ming -Ming [1 ]
Wu, Heng [2 ]
Tan, Li [1 ]
Ma, Yue [1 ]
Zhao, Ya-nan [1 ]
Liu, Yi [1 ]
Yang, Fu-Rong [1 ]
Wu, Chun-Lin [1 ]
Liu, Xue-lu [2 ]
Liang, Bao-Lai [1 ]
Li, Xiao-Li [1 ]
机构：
[1] Hebei Univ, Coll Phys Sci & Technol, Natl & Local Joint Engn Lab New Energy Photoelect, Baoding 071002, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, State Key Lab Superlatt & Microstruct, Beijing 100083, Peoples R China
来源：
OPTICS LETTERS | 2023年 / 48卷 / 04期
关键词：
MONOLAYER; ANGLE;
D O I：
10.1364/OL.478299
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Helicity-resolved Raman spectroscopy (HRRS) can effec-tively distinguish the Raman modes of two-dimensional (2D) layered materials by phonon symmetry. In this paper, we sys-tematically investigated the phonon helicity selection of basal and edge planes of MoS2 bulk by HRRS. We find that the symmetry of the crystal structure changes the helicity selec-tion of the E1g, E12g, and A1g modes in the edge plane. The theoretical calculation results confirm that the E12g and A1g modes of the basal plane exhibit a perfect helicity exchange, and the helicity selections of the E12g and A1g modes of the edge plane are eliminated or weakened. Our study provides references for phonon helicity selection of 2D layered mate-rials represented by MoS2.(c) 2023 Optica Publishing Group
引用
收藏
页码：888 / 891
页数：4
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