Origin of the orbital polarization of Co${}^{2+}$ in La${}_2$CoTiO${}_6$ and (LaCoO${}_3$)${}_1$+(LaTiO${}_3$)${}_1$ : a DFT+$U$ and DMFT study

Alex Taekyung Lee, Hyowon Park, Sohrab Ismail-Beigi

The unequal electronic occupation of localized orbitals (orbital polarization), and associated lowering of symmetry and degeneracy, play an important role in the properties of tran…