Spectral functions A(ω) of tetragonal double perovskite Ba2VFeO6 for different magnetic states. The unit of A(ω) is eV−1 per 5-atom. ‘PM’ stands for paramagnetic state, ‘FM’ for ferromagnetic state, ‘-AFM’ for  antiferromagnetic state and ‘-AFM’ for  antiferromagnetic state. Panels a) spin-resolved spectral function. The positive (negative) y-axis corresponds to spin-up (spin-down). Panels b) total spectral functions (summing over spin-up and spin-down). The red, blue and green curves are for Fe d, V d and O p, respectively. The Fermi level is set at ω = 0 eV.