Influence of structural distortions on the Ir magnetism in Ba2-xSrxYIrO6 double perovskites

Abstract

We explore the relative strengths of spin orbit coupling and crystal field splitting in the Ir5+ compounds Ba2-xSrxYIrO6. In the case of strong spin orbit coupling and regular Ir5+ octahedra, one expects a nonmagnetic J = 0 state; in the case of distorted octahedra where crystal field effects dominate, the t2g manifold splits into a magnetic ground state. We report the results of continuously transitioning from the cubic Ba2YIrO6 double perovskite with ideal octahedra to the monoclinic Sr2YIrO6 double perovskite with distorted octahedra. We see no emergence of an enhanced Ir5+ magnetic moment in the series on increasing the structural distortions, as would have been the case for significant crystal field splitting. The near-constant magnetic moment observed through the Ba2-xSrxYIrO6 series reinforces the notion that spin-orbit coupling is the dominant force in determining the magnetism of iridium-oxygen octahedra in perovskite-like structures

References in corpus (8)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Twisted Hubbard Model for Sr2IrO4: Magnetism and Possible High Temperature Superconductivity
• Quantum spin Hall effect in a transition metal oxide Na2IrO3
• Crystal field splitting and correlation effect on the electronic structure of A2IrO3
• Testing the validity of the strong spin-orbit-coupling limit for octahedrally coordinated iridates in a model system Sr${}_3$CuIrO${}_6$
• Correlated vs. conventional insulating behavior in the Jeff=1/2 vs. 3/2 bands in the layered iridate Ba2IrO4
• A new material for probing spin-orbit coupling in Iridates

Cited by in corpus (19)

• The Challenge of Spin-Orbit-Tuned Ground States in Iridates
• New Evidence for a Low-Temperature Magnetic Ground State in Double-Perovskite Iridates with Ir5+(5d4) Ions
• The iridium double perovskite Sr2YIrO6 revisited: A combined structural and specific heat study
• 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${}_6$
• Orbital and spin order in spin-orbit coupled $d^1$ and $d^2$ double perovskites
• Magnetism out of disorder in a J=0 compound Ba2YIrO6
• 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
• Canted ferrimagnetism and giant coercivity in the non-stoichiometric double perovskite La2Ni1.19Os0.81O6
• Fragile singlet ground state magnetism in pyrochlore osmates R2Os2O7 (R=Y and Ho)
• Spin-orbit effects in pentavalent Iridates: Models and materials
• Gapless to gapless phase transitions in quantum spin chains
• Magnetic phase transitions in quantum spin-orbital liquids
• Magnetization dynamics fingerprints of an excitonic condensate $t_{2g}^4$ magnet
• Small moments without long-range magnetic ordering in the zero-temperature ground state of the double-perovskite iridate Ba${}_2$YIrO${}_6$
• Novel Block Excitonic Condensate at $n=3.5$ in a Spin-Orbit Coupled $t_{2g}$ Multiorbital Hubbard Model
• Single crystal growth and magnetism of Sr3NaIrO6 and Sr3AgIrO6: tracking the J = 0 ground state of Ir5+
• Temperature-induced valence-state transition in double perovskite Ba2-xSrxTbIrO6