Spin-orbit coupling controlled $J=3/2$ electronic ground state in 5$d^3$ oxides

Abstract

Entanglement of spin and orbital degrees of freedom drives the formation of novel quantum and topological physical states. Discovering new spin-orbit entangled ground states and emergent phases of matter requires both experimentally probing the relevant energy scales and applying suitable theoretical models. Here we report resonant inelastic x-ray scattering measurements of the transition metal oxides Ca${}_3$LiOsO${}_6$ and Ba${}_2$YOsO${}_6$. We invoke an intermediate coupling approach that incorporates both spin-orbit coupling and electron-electron interactions on an even footing and reveal the ground state of $5d^3$ based compounds, which has remained elusive in previously applied models, is a novel spin-orbit entangled J=3/2 electronic ground state. This work reveals the hidden diversity of spin-orbit controlled ground states in 5d systems and introduces a new arena in the search for spin-orbit controlled phases of matter.

arXiv commentmain text plus supplemental information

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Cited by in corpus (29)

• Orbital physics in transition metal compounds: new trends
• Determination of Hund's coupling in 5d Oxides using Resonant Inelastic X-ray Scattering
• Octupolar order in d-orbital Mott insulators
• EDRIXS: An open source toolkit for simulating spectra of resonant inelastic x-ray scattering
• Ferro-octupolar order and low-energy excitations in d${}^2$ double perovskites of Osmium
• Spin-orbit coupled systems in the "atomic" limit: rhenates, osmates, iridates
• Orbital and spin order in spin-orbit coupled $d^1$ and $d^2$ double perovskites
• Origin of magnetic excitation gap in double perovskite Sr${}_2$FeOsO${}_6$
• Antiferromagnetic long-range order in $5d^1$ double-perovskite Sr${}_2$MgReO${}_6$
• Interplay of spin-orbit coupling and hybridization in Ca3LiOsO6 and Ca3LiRuO6
• Role of Square Planar Coordination in the Magnetic Properties of Na4IrO4
• Crossover from itinerant to localized magnetic excitations through the metal-insulator transition in NaOsO${}_{\text{3}}$
• Hidden orders in spin-orbit entangled correlated insulators
• Strongly-coupled quantum critical point in an all-in-all-out antiferromagnet
• Spin-phonon interactions and magnetoelectric coupling in Co${}_4$$B_2$O${}_9$ ($B$ = Nb, Ta)
• Evidence for $J_{\mathrm{eff}}=0$ ground state and defect-induced spin glass behaviour in the pyrochlore osmate Y${}_2$Os${}_2$O${}_7$
• Effects of the structural distortion on the electronic band structure of {\boldmath $\mathrm{NaOs}{\mathrm{O}}_3$} studied within density functional theory and a three-orbital model
• Magnetic frustration in the cubic double perovskite Ba2NiIrO6
• Spin-orbit coupling in a half-filled $t_{2g}$ shell: the case of $5d^3$ K${}_2$ReCl${}_6$
• Multipolar interactions and magnetic excitation gap in d${}^3$ spin-orbit Mott insulators
• Spin and orbital dynamics through the metal-to-insulator transition in Cd${}_2$Os${}_2$O${}_7$ probed with high-resolution RIXS
• Spin-orbit coupling induced magnetic anisotropy and large spin wave gap in $\mathrm{NaOs}{\mathrm{O}}_3$
• Single crystal growth and magnetism of Sr3NaIrO6 and Sr3AgIrO6: tracking the J = 0 ground state of Ir5+
• A Novel ground state in a new dimer iridate Ba13Ir6O30 with Ir6+(5d3) Ions
• Anomalous Fermi pockets on Hund's metal surface of Sr2RuO4 induced by the correlation-enhanced spin-orbit coupling
• Dipolar and quadrupolar correlations in the $5d^2$ Re-based double perovskites Ba${}_2$YReO${}_6$ and Ba${}_2$ScReO${}_6$
• Coupled-cluster approach to vibronic effects in resonant inelastic x-ray scattering of quantum materials: Application to a $5d^1$ rhenium oxide
• Hamiltonian parameter inference from resonant inelastic x-ray scattering with active learning
• Electronic and magnetic ground state of 4$d^3$ double perovskite ruthenates A${}_2$LaRuO${}_6$ (A $=$ Ca, Sr, Ba)