Distinguishing erbium dopants in Y${}_2$O${}_3$ by site symmetry: \textit{ ab initio} theory of two spin-photon interfaces

Churna Bhandari, Cüneyt Şahin, Durga Paudyal +1

We present a first-principles study of defect formation and electronic structure of erbium (Er)-doped yttria (Y${}_2$O${}_3$). This is an emerging material for spin-photon interfaces i…