A Metastable CaSH${}_3$ Phase Composed of HS Honeycomb Sheets that is Superconducting Under Pressure

Yan Yan, Tiange Bi, Nisha Geng +2

Evolutionary searches predicted a number of ternary phases that could be synthesized at pressures of 100-300~GPa. $P{6}_3/mmc$ CaSH${}_2$, $Pnma$ CaSH${}_2$, $Cmc{2}_1$ CaSH${}_6$, and $I\ba…