Evolution of Spin-Orbital-Lattice Coupling in the $R$VO${}_3$ Perovskites

Abstract

We introduce a microscopic model which unravels the physical mechanisms responsible for the observed phase diagram of the $R$VO${}_3$ perovskites. It reveals a nontrivial interplay between superexchange, the orbital-lattice coupling due to the GdFeO${}_3$-like rotations of the VO${}_6$ octahedra, and orthorhombic lattice distortions. We find that the lattice strain affects the onset of the magnetic and orbital order by partial suppression of orbital fluctuations. The present approach provides also a natural explanation of the observed reduction of magnon energies from LaVO${}_3$ to YVO${}_3$.

arXiv comment4 pages, 5 figures

References in corpus (11)

• Electronic origin of magnetic and orbital ordering in insulating LaMnO_3
• How chemistry controls electron localization in 3d1 perovskites: A Wannier-function study
• Spin Order due to Orbital Fluctuations: Cubic Vanadates
• Magnetic neutron scattering study of YVO3: Evidence for an orbital Peierls state
• Orbital Physics in the Perovskite Ti Oxides
• Orbital fluctuations in the different phases of LaVO3 and YVO3
• Neutron diffraction study of YVO3, NdVO3, and TbVO3
• Dimerization versus Orbital Moment Ordering in the Mott insulator YVO${}_3$
• Evidence for electronic phase separation between orbital orderings in SmVO3
• One-dimensional orbital fluctuations and the exotic magnetic properties of YVO${}_3$
• Theory for spin and orbital orderings in high temperature phase in $YV{O}_3$

Cited by in corpus (46)

• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• Fingerprints of spin-orbital entanglement in transition metal oxides
• Spectral properties of orbital polarons in Mott insulators
• Orbitally induced string formation in the spin-orbital polarons
• Von Neumann Entropy Spectra and Entangled Excitations in Spin-Orbital Models
• Spontaneous symmetry breaking in a generalized orbital compass model
• Spin-Orbital Order Modified by Orbital Dilution in Transition Metal Oxides: From Spin Defects to Frustrated Spins Polarizing Host Orbitals
• Spin-orbital physics for p orbitals in alkali RO_2 hyperoxides --- generalization of the Goodenough-Kanamori rules
• Spin-orbital resonating valence bond liquid on a triangular lattice: Evidence from finite-cluster diagonalization
• Exotic spin orders driven by orbital fluctuations in the Kugel-Khomskii model
• Orbital superexchange and crystal field simultaneously at play in YVO3: resonant inelastic x-ray scattering at the V L edge and the O K edge
• Entangled spin-orbital phases in the bilayer Kugel-Khomskii model
• Quantum phase transitions in exactly solvable one-dimensional compass models
• Topological Order in an Entangled SU(2)$\otimes$XY Spin-Orbital Ring
• Symmetry properties and spectra of the two-dimensional quantum compass model
• Defect states and excitations in a Mott insulator with orbital degrees of freedom: Mott-Hubbard gap versus optical and transport gaps in doped systems
• Defect states and spin-orbital physics in doped vanadates Y1-xCaxVO3
• Orbitally relieved magnetic frustration in NaVO2
• Influence of spin and orbital fluctuations on Mott-Hubbard exciton dynamics in LaVO${}_3$ Thin Films
• Effective Hamiltonian for transition-metal compounds. Application to Na_xCoO_2
• Defect-induced orbital polarization and collapse of orbital order in doped vanadium perovskites
• Uniaxial strain control of bulk ferromagnetism in rare-earth titanates
• Dynamical mean field theory of an effective three-band model for Na${}_x$CoO${}_2$
• Fingerprints of spin-orbital polarons and of their disorder in the photoemission spectra of doped Mott insulators with orbital degeneracy
• Spin-orbital order in undoped manganite LaMnO3 at finite temperature
• Magnetic excitations in one-dimensional spin-orbital models
• Frustration and Entanglement in Compass and Spin-Orbital Models
• Charge and orbital order in transition metal oxides
• Spin--orbital physics in transition metal oxides
• Entanglement Driven Phase Transitions in Spin-Orbital Models
• Mechanism of hole propagation in the orbital compass models
• Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3
• Locally tunable disorder and entanglement in the one-dimensional plaquette orbital model
• Resonant inelastic x-ray scattering study of doping and temperature dependence of low-energy excitations in La${}_{1-x}$Sr${}_x$VO${}_3$
• Coupling of electronic and structural degrees of freedom in vanadate superlattices
• An x-ray diffraction study of the temperature-induced structural phase transitions in SmVO3
• Exact deconfined gauge structures in the higher-spin Yao-Lee model: a quantum spin-orbital liquid with spin fractionalization and non-Abelian anyons
• Spectral properties of spin-orbital polarons as a fingerprint of orbital order
• Tuning Crystal Field Potential by Orbital Dilution in $d^4$ Oxides
• Orbital Rotations induced by Charges of Polarons and Defects in Doped Vanadates
• $d-p$ model and spin-orbital order in the vanadium perovskites
• Exotic Spin Order due to Orbital Fluctuations
• Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling
• Spin-Orbital Liquid on a Triangular Lattice
• One-dimensional frustrated plaquette compass model: Nematic phase and spontaneous multimerization
• Tracking the local order parameter through the Hubbard exciton decoherence time in the Mott-Hubbard insulator LaVO3