  Electronic properties of spin polarized antiferromagnetic ACrO3 (A = La, Y)
are explored with Hubbard Model using Density Functional Theory (DFT). These
two isostructural systems are investigated using the different Hubbard energy
and analyzed the hybridization of chromium 3d orbitals and oxygen 2p orbitals
and the change in energy band gaps against the Hubbard energy. The bond length
and bond angle affect significantly the orbital contributions of Cr-3d and O-2p
electrons for both the system. We noticed that the Cr-O hybridization affects
the orbital degeneracy and is substantiated with partial density of states.
These results emphasize the contribution of Hubbard energy in correlated
electron systems.
