Supplemental Material for "Interfacial Anisotropy Modulation Enables Spin Textures Transitions in V3I8/VI2 Heterostructure"

The supplementary material for phonon spectra of materials; calculation details of Heisenberg exchange parameters; relative energies of magnetic states as a function of Hubbard parameter U (2-4 eV); work functions; angular dependence of MAE in spherical coordinates; Bader charge analysis at the heterostructure; and spin texture evolution mappings under magnetic fields at various temperatures; the Curie and Neel temperatures; the variation of the skyrmion size under an applied magnetic field.