Carbonaceous sulfur hydride

Carbonaceous sulfur hydride (CSH) is a potential superconductor that was announced in October 2020 by the lab of Ranga Dias at the University of Rochester, in a Nature paper that was later retracted. It was reported to have a superconducting transition temperature of 15 °C (59 °F) at a pressure of 267 GPa (38.7 million psi), which would have made it the highest-temperature superconductor discovered.

Source: Wikipedia — Carbonaceous sulfur hydride (CC BY-SA 4.0)