[8p-A33-1~7] 17.2 Fundamental properties

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[8p-A33-7] Determination of direct transition energies in SnS by polarized photoreflectance

〇Sakiko Kawanishi^1,2, Issei Suzuki², Takahisa Omata², Yoshikazu Terai³ (1.Kyoto Univ., 2.Tohoku Univ., 3.Kyushu Inst. Tech.)

Keywords:

2D materials,Tin monosulfide,Photoreflectance

SnS is a two-dimensional material exhibiting strong in-plane optical anisotropy; however, the reported energies of the critical points E₁ and E₂ associated with direct optical transitions show significant discrepancies. In this study, polarization-resolved photoreflectance spectroscopy was applied to SnS for the first time. By separating the signals originating from each critical point, the direct transition energies of E₁ and E₂, as well as their temperature dependences, were determined with high precision.