Motivated by recent neutron, X-ray absorption and resonant scattering experiments, we revisit the electronic structure of V2O3. We propose a model in which S=1 V3+ ions are coupled in the vertical V-V pairs forming two-fold orbitally degenerate configurations with S=2. Ferro-orbital ordering of the V-V pairs gives a description which is consistent with all experiments in the antiferromagnetic insulating phase.
@article{arxiv.cond-mat/0005506,
title = {Orbitally Degenerate Spin-1 Model for Insulating V2O3},
author = {F. Mila and R. Shiina and F. -C. Zhang and A. Joshi and M. Ma and V. Anisimov and T. M. Rice},
journal= {arXiv preprint arXiv:cond-mat/0005506},
year = {2009}
}