Evolution of orbital excitations from insulating to superconducting MgTi${}_2$O${}_4$ films

Qizhi Li, Abhishek Nag, Xiquan Zheng +6

Spinel oxides are well-known functional materials but rarely show superconductivity. Recently, emergent superconductivity was discovered in MgTi${}_2$O${}_4$, which is attributed to th…