Orbital occupancy order in V2O3: Resonant X-ray scattering results

Resonant x-ray scattering experiments at the vanadium K edge demonstrate th e existence of orbital ordering in V2O3 Bragg peaks due to the long-range o rder of 3d orbitals occupancy are observed when the photon energy is tuned to the threshold of the vanadium 3d bands. The azimuthal dependence of the resonant intensities confirms that the resonance arises from the ordering o f the vanadium orbital occupancy. The observed orbital structure accounts f or the complex magnetic structure of V2O3 The measured magnetic and orbital responses have the same critical temperature T-N. [S0031-9007(99)09287-X].