Ba2YIrO6: A cubic double perovskite material with Ir5+ ions

Abstract

Materials with a 5d4 electronic configuration are generally considered to have a nonmagnetic ground state (J=0). Interestingly, Sr2YIrO6 (Ir5+ having 5d4 electronic configuration) was recently reported to exhibit long-range magnetic order at low temperature and the distorted IrO6 octahedra were discussed to cause the magnetism in this material. Hence, a comparison of structurally distorted Sr2YIrO6 with cubic Ba2YIrO6 may shed light on the source of magnetism in such Ir5+ materials with 5d4 configuration. Besides, Ir5+ materials having 5d4 are also interesting in the context of recently predicted excitonic types of magnetism. Here we report a single-crystal-based analysis of the structural, magnetic, and thermodynamic properties of Ba2YIrO6. We observe that in Ba2YIrO6 for temperatures down to 0.4 K, long-range magnetic order is absent but at the same time correlated magnetic moments are present. We show that these moments are absent in fully relativistic ab initio band-structure calculations; hence, their origin is presently unclear.

arXiv comment8 pages, 9 figures

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Cited by in corpus (58)

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• Determination of Hund's coupling in 5d Oxides using Resonant Inelastic X-ray Scattering
• Coulomb Correlations in 4d and 5d Oxides from First Principles - or How Spin-Orbit Materials choose their Effective Orbital Degeneracies
• Octupolar order in d-orbital Mott insulators
• New Evidence for a Low-Temperature Magnetic Ground State in Double-Perovskite Iridates with Ir5+(5d4) Ions
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• Effective magnetic interactions in spin-orbit coupled $d^4$ Mott insulators
• Unraveling the nature of magnetism of the 5${\mathbf{d}}^4$ double perovskite Ba${}_2$YIrO${}_6$
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• J-freezing and Hund's rules in spin-orbit-coupled multiorbital Hubbard models
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• Spin-orbit coupling control of anisotropy, ground state and frustration in 5d2 Sr2MgOsO6
• Magnetism out of disorder in a J=0 compound Ba2YIrO6
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• A New Era of Excitonic Insulators
• Diluted paramagnetic impurities in nonmagnetic Ba${}_2$YIrO${}_6$
• Density matrix renormalization group study of a three-orbital Hubbard model with spin-orbit coupling in one dimension
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• Spin-orbital excitons and their potential condensation in pentavalent iridates
• Orbiton-Phonon coupling in Ir5+(5d4) double perovskite Ba2YIrO6
• Gapless to gapless phase transitions in quantum spin chains
• Evidences for the random singlet phase in a new honeycomb iridate SrIr${}_2$O${}_{6-\delta }$
• Spin gaps in the ordered states of La${}_2$LiXO${}_6$ (X = Ru, Os) and their relation to distortion of the cubic double perovskite structure in 4$d^3$ and 5$d^3$ magnets
• Multipolar magnetism in $5d^2$ vacancy-ordered halide double perovskites
• Magnetic reorientation transition in a three orbital model for $\mathrm{C}{\mathrm{a}}_2\mathrm{Ru}{\mathrm{O}}_4$ -- Interplay of spin-orbit coupling, tetragonal distortion, and Coulomb interactions
• Evidence for $J_{\mathrm{eff}}=0$ ground state and defect-induced spin glass behaviour in the pyrochlore osmate Y${}_2$Os${}_2$O${}_7$
• Magnetic phase transitions in quantum spin-orbital liquids
• Correlated Paramagnetism and Interplay of Magnetic and Phononic Degrees of Freedom in 3d-5d Coupled La2CuIrO6
• Magnetization dynamics fingerprints of an excitonic condensate $t_{2g}^4$ magnet
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• $J_{eff}$ states in a quasi one dimensional antiferromagnetic spin chain hexagonal Iridates Sr${}_3$MIrO${}_6$ (M=Mg, Zn, Cd): an $ab-initio$ comparative perspective
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• Varying magnetism in the lattice distorted Y2NiIrO6 and La2NiIrO6
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• Sr${}_3$Ir${}_2$O${}_7$F${}_2$: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator
• Quasiparticle Dynamics in the 4d-4f Ising-like Double Perovskite Ba2DyRuO6 studied using Neutron Scattering and Machine-Learning Framework
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