Hole superconductivity in H2S and other sulfides under high pressure

Superconductivity at temperatures up to 190 K at high pressures has recently been observed in H 2 S and interpreted as conventional BCS-electron–phonon-driven superconductivity (Drozdov et al., 2014). Instead we propose that it is another example of the mechanism of hole superconductivity at work. Within this mechanism high temperature superconductivity arises when holes conduct through …

https://www.sciencedirect.com/science/article/pii/S0921453415000179