Hydrogen Clathrate Structures in Rare Earth Hydrides at High Pressures: Possible Route to Room-Temperature Superconductivity

A first-principles search among possible rare earth hydrogen clathrate structures under high pressure predicts that one of them, YH${}_{10}$, is a potential room-temperature superconductor with a $T$${}_{c}$ of up to 303 K, at 400 GPa pressure.