Observation of Pressure-Induced Superconductivity of Sulfur

The electrical resistance of sulfur has been measured under pressures up to 100 GPa and temperatures down to 70 mK. Under pressures approaching 100 GPa, sulfur shows metallic reflection comparable to that of used Pt electrodes. The temperature dependence of the resistance reveals metallic behavior, and the sharp drop of the resistance at around 15 K and 100 GPa is due to superconducting transition as the transition temperature shows typical magnetic field dependence.