Table 2 Symmetry representation for phonon modes in bulk and few layer TMDCs14.
From: Raman scattering and anomalous Stokes–anti-Stokes ratio in MoTe2 atomic layers
# of Layers | Sym. Grp. | σh/i Sym. | S | B | IC | OC | IMC | OMC |
|---|---|---|---|---|---|---|---|---|
1 | D3h | + | − | − | − | 1 A’ 1 | 1 E’ | − |
− | − | − | 1 E” | − | − | 1 A”2 | ||
2 | D3d | + | 1 E g | 1 A 1g | 1 E g | 1 A 1g | 1 E g | 1 A 1g |
− | − | − | 1 Eu | 1 A2u | 1 Eu | 1 A2u | ||
3 | D3h | + | 1 E’ | 1 A’ 1 | 1 E’ | 2 A’ 1 | 2 E’ | 1 A’ 1 |
− | 1 E” | 1 A”2 | 2 E” | 1 A”2 | 1 E” | 2 A”2 | ||
4 | D3d | + | 2 E g | 2 A 1g | 2 E g | 2 A 1g | 2 E g | 2 A 1g |
− | 1 Eu | 1 A2u | 2Eu | 2 A2u | 1 Eu | 2 A2u | ||
5 | D3h | + | 2 E’ | 2 A’ 1 | 2 E’ | 3 A’ 1 | 3 E’ | 2 A’ 1 |
− | 2 E” | 2 A”2 | 3 E” | 2 A”2 | 2 E” | 3 A”2 | ||
bulk | D46h | + | 1 E 2g | 1 B 2g | 1 E 1g | 1 A 1g | 1 E 2g | 1 B 2g |
− | − | − | 1 E2u | 1 B1u | 1 E1u | 1 A2u |
