Dynamically generated dimension reduction and crossover in a spin orbital model

Abstract

We study a spin orbital model in which the spin-spin interaction couples linearly to the orbital isospin. Fluctuations drive the transition from paramagnetic state to C type ordered state into a strongly first order one, as observed in $V_2{O}_3$. At T=0, there is a FOCS to FOGS transition. Close to the transition point, the system shows dynamically generated dimension reduction and crossover, resulting in one or more spin reentrant transitions.

Submitted to PRL. 4 pages and one figure

References in corpus (6)

• SU(4) Theory for Spin Systems with Orbital Degeneracy
• Spin Order due to Orbital Fluctuations: Cubic Vanadates
• Orbitally Degenerate Spin-1 Model for Insulating V2O3
• Magnetic correlations and quantum criticality in the insulating antiferromagnetic, insulating spin liquid, renormalized Fermi liquid, and metallic antiferromagnetic phases of the Mott system V_2O_3
• Theory for Phase Transitions in Insulating Vanadium Oxide
• Theory for spin and orbital orderings in high temperature phase in $YV{O}_3$

Cited by in corpus (1)

• Phase diagram of strongly attractive $p$-orbital fermions on optical lattices