Superconductivity and structural studies of highly compressed hydrogen sulfide

Superconductivity exceeding 200 K was reported in the highly compressed hydrogen sulfide. The superconducting “material” was found to be synthesized by pressure above 90 GPa by the dissociation of hydrogen sulfide (H2S). We have investigated the superconducting properties after the discovery. Here, we report our recent investigations including confirmation the superconductivity and the crystal structure analysis using the synchrotron x-ray at room temperature and low temperature.