Alternating spin-orbital order in tetragonal Sr2VO4

Abstract

Considering spin-orbit coupling, the tetragonal crystal-field, and all relevant superexchange processes including quantum interference, we derive expressions for the energy levels of the vanadium ions in tetragonal Sr2VO4. The used parameters of the model Hamiltonian allow to describe well the excitation spectra observed in neutron scattering and optical experiments at low temperatures. The free energy exhibits a minimum which corresponds to a novel alternating spin-orbital order with strong thermal fluctuation of the orbital mixing parameter.

4 pages, 3 figures

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Cited by in corpus (12)

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• Electron spin resonance and exchange paths in the orthorhombic dimer system Sr2VO4
• Hidden Magnetic Order in Triangular-Lattice Magnet Li2MnTeO6
• Anisotropic Exchange in $\mathbf{LiC}{\mathbf{u}}_2{\mathbf{O}}_2$
• Competing magnetic interactions in spin-1/2 square lattice: hidden order in Sr${}_2$VO${}_4$
• Jahn-Teller induced nematic orbital order in tetragonal Sr${}_2$VO${}_4$
• Structural anomalies and short-range magnetic correlations in the orbitally degenerated system Sr${}_2$VO${}_4$
• Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3
• Peculiarities of magnetic ordering in the S = 5/2 two-dimensional square-lattice antimonate NaMnSbO4
• Spin-orbit coupling induced orbital entanglement in a three-band Hubbard model
• Sr${}_2$NbO${}_4$: A $4d$ analogue of the layered perovskite Sr${}_2$VO${}_4$