Pressure-induced exciton formation and superconductivity in
platinum-based mineral Sperrylite
Pressure-induced exciton formation and superconductivity in
platinum-based mineral Sperrylite
We report a comprehensive study of Sperrylite (PtAs2), the main platinum source in natural minerals, as a function of applied pressures up to 150 GPa. While no structural phase transition was detected from pressure-dependent X-ray measurements, the unit cell volume shrinks monotonically with pressure following the third-order Birch-Murnaghan equation of …