Orbitally degenerate spin-1 model for insulating V2O3
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 twofold 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.
Mila
F
Laboratoire de Physique Quantique, Universite Paul Sabatier, 31062 Toulouse, France.
Shiina
R
Zhang
F
Joshi
A
Ma
M
Anisimov
V
Rice
TM