Pressure-induced spin-state ordering in Sr${}_2$CoO${}_3$F

Abstract

We study theoretically low-temperature phases of a recently synthesized compound Sr${}_2$CoO${}_3$F under pressure. The analysis combining LDA+DMFT and a strong-coupling effective model points to the existence of not only normal paramagnetic and antiferromagnetic regimes, but also a spin-state ordered phase in a certain range of applied pressure and low temperature. This order is characterized by a checkerboard arrangement of different spin states of cobalt atoms in the lattice.

arXiv comment7 pages, 7 figures

References in corpus (23)

• Wien2wannier: From linearized augmented plane waves to maximally localized Wannier functions
• Excitonic Magnetism in Van Vleck-type d^4 Mott Insulators
• Higgs mode and its decay in a two dimensional antiferromagnet
• w2dynamics: Local one- and two-particle quantities from dynamical mean field theory
• Nano-magnetic droplets and implications to orbital ordering in La1-xSrxCoO3
• Novel magnetism of Ir5+ ions in the double perovskite Sr2YIrO6
• Excitonic condensation in systems of strongly correlated electrons
• Disproportionation and Metallization at Low-Spin to High-Spin Transition in Multiorbital Mott Systems
• Magnetic properties and spin waves of bilayer magnets in a uniform field
• Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy
• Ferromagnetic insulating state in tensile-strained LaCoO${}_3$ thin films
• Excitonic Instability at the Spin-State Transition in the Two-Band Hubbard Model
• Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint
• Metal-insulator transition and the Pr${}^{3+}$/Pr${}^{4+}$ valence shift in (Pr${}_{1-y}$Y${}_y$)${}_{0.7}$Ca${}_{0.3}$CoO${}_3$
• Field-induced exciton condensation in LaCoO3
• Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study
• Excitonic dispersion of the intermediate-spin state in LaCoO${}_3$ revealed by resonant inelastic X-ray scattering
• State- and superstate-sampling in hybridization-expansion continuous-time quantum Monte Carlo
• Low-energy excitation spectra in the excitonic phase of cobalt oxides
• Excitonic magnetism in $d^6$ perovskites
• Emergent units of itinerant spin-state excitations in LaCoO${}_3$
• Electronic Structure Calculations with LDA+DMFT
• Theoretical investigation of excitonic magnetism in LaSrCoO${}_4$

Cited by in corpus (3)

• Damping of spinful excitons in LaCoO${}_3$ by thermal fluctuations: Theory and experiment
• Dynamical response and competing orders in two-band Hubbard model
• Metal-insulator transition in CaCu${}_3$Fe${}_4$O${}_{12}$