Inﬂuence of orbital contributions to the valence band alignment of Bi2 O3, Fe2 O3, BiFeO3, and Bi0.5 Na0.5 TiO3

Shunyi Li^*, Jan Morasch, Andreas Klein, Christina Chirila, Lucian Pintilie, Lichao Jia, Klaus Ellmer, Michael Naderer, Klaus Reichmann, Melanie Gröting, Carsten Albe

^*Corresponding author for this work