Theory for spin and orbital orderings in high temperature phase in $YV{O}_3$

Abstract

Motivated by the recent neutron diffraction experiment on $YV{O}_3$, we consider a microscopic model where each $V^{3+}$ ion is occupied by two 3d electrons of parallel spins with two fold degenerate orbital configurations. The mean field classical solutions of the spin-orbital superexchange model predicts an antiferro-orbital ordering at a higher temperature followed by a C-type antiferromagnetic spin ordering at a lower temperature. Our results are qualitatively consistent with the observed orbital phase transition at $\sim 200K$ and the spin phase transition at $\sim 114K$ in $YV{O}_3$.

arXiv comment7 pages, 3 figures and 2 tables. Accepted to be published in PRB

References in corpus (9)

• SU(4) Theory for Spin Systems with Orbital Degeneracy
• Orbital liquid in three dimensional Mott insulator: $LaTi{O}_3$
• Interplay between orbital ordering and lattice distortions in LaMnO3, YVO3, and YTiO3
• Spin Order due to Orbital Fluctuations: Cubic Vanadates
• Transition between orbital orderings in YVO3
• Orbitally Degenerate Spin-1 Model for Insulating V2O3
• On the origin of biquadratic exchange in spin 1 chains
• Theory for high spin systems with orbital degeneracy
• Theory for Phase Transitions in Insulating Vanadium Oxide

Cited by in corpus (6)

• Fingerprints of spin-orbital entanglement in transition metal oxides
• Evolution of Spin-Orbital-Lattice Coupling in the $R$VO${}_3$ Perovskites
• Exotic spin orders driven by orbital fluctuations in the Kugel-Khomskii model
• Entangled spin-orbital phases in the bilayer Kugel-Khomskii model
• Charge and orbital order in transition metal oxides
• Dynamically generated dimension reduction and crossover in a spin orbital model