Experimental observation of high-temperature superconductivity in H$_x$S at P$\sim$150 GPa

We found that sulfur hydride transforms at P$\sim$90 GPa to metal and superconductor with T$_c$ increasing with pressure to 150 K at $\approx$ 200 GPa. Moreover we found superconductivity with T$_c$ $\approx$ 190 K in a H2S sample pressurized to P $>$ 150 GPa at T $>$ 220 K. This superconductivity likely associates with the dissociation of H2S, and formation of SHn (n $>$ 2) hydrides. We proved occurrence of superconductivity by the drop of the resistivity at least 50 times lower than the copper resistivity, the decrease of T$_c$ with magnetic field, and the strong isotope shift of T$_c$ in D2S which evidences a major role of phonons in the superconductivity.