Supplemental Material for "Rashba spin-splitting and spin Hall effect in Janus monolayers Sb2XSX' (X, X'= S, Se, or Te; X ≠ X')"

Polar diagram of Young's modulus, Poisson ratio, Electrostatic potential, charge density difference with bader charges, Electronic band structures using PBE, HSE and PBE+SOC of Sb2S3, Sb2S2Se, Sb2S2Te, and Sb2SeSTe monolayers. The energy contour of the 2D Fermi surface spin-textures of Janus Sb2S2Se, Sb2S2Te, and Sb2SeSTe monolayers.