Electron-phonon coupling and superconductivity in an alkaline earth hydride CaH${}_6$ at high pressures

Hyunsoo Jeon, Chongze Wang, Shuyuan Liu +3

Recently, an alkaline earth hydride CaH${}_6$ having a sodalitelike clathrate structure has been experimentally synthesized at megabar pressures with a maximum $T_c$ of 215 K, compar…