Electron-phonon vertex correction effect in superconducting H$_3$S

This dataset contains all computational data used to study superconductivity in hydrogen sulfide (H₃S) at 200 GPa, generated using first-principles density-functional theory (DFT), density-functional perturbation theory (DFPT), and the EPW code. The data set is designed to enable full reproducibility and reuse by the computational materials science community. It includes inputs for band structure, DOS, phonons, anharmonic phonons for the special displacement method using ZG, vertex calculation, and superconductivity using EPW.