Nature of the Magnetic Interactions in Sr${}_3$NiIrO${}_6$

Abstract

Iridates abound with interesting magnetic behaviours because of their strong spin-orbit coupling. Sr${}_3$NiIrO${}_6$ brings together the spin-orbital entanglement of the Ir${}^{4+}$ ion with a 3$d$ Ni cation and a one-dimensional crystal structure. It has a ferrimagnetic ground state with a 55 T coercive field. We perform a theoretical study of the magnetic interactions in this compound, and elucidate the role of anisotropic symmetric exchange as the source of its strong magnetic anisotropy. Our first-principles calculations reproduce the magnon spectra of this compound and predict a signature in the cross sections that can differentiate the anisotropic exchange from single-ion anisotopy.

7 pages, 5 figures

References in corpus (7)

• Restoring the density-gradient expansion for exchange in solids and surfaces
• Generalized gradient approximation for solids and their surfaces
• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Physics of the Kitaev model: fractionalization, dynamical correlations, and material connections
• Giant Magnon Gap in Bilayer Iridate Sr3Ir2O7: Enhanced Pseudo-dipolar Interactions Near the Mott Transition
• Ising magnetism and ferroelectricity in Ca${}_3$CoMnO${}_6$
• Testing the validity of the strong spin-orbit-coupling limit for octahedrally coordinated iridates in a model system Sr${}_3$CuIrO${}_6$

Cited by in corpus (8)

• Covalency-driven collapse of strong spin-orbit coupling in face-sharing iridium octahedra
• Spin--lattice coupling and the emergence of the trimerized phase in the $S=1$ Kagome antiferromagnet Na${}_2$Ti${}_3$Cl${}_8$
• Spin-orbit effects in pentavalent Iridates: Models and materials
• First-principles characterization of the magnetic properties of Cu${}_2$(OH)${}_3$Br
• Spin-lattice and electron-phonon coupling in 3$d$/5$d$ hybrid Sr${}_3$NiIrO${}_6$
• $J_{eff}$ states in a quasi one dimensional antiferromagnetic spin chain hexagonal Iridates Sr${}_3$MIrO${}_6$ (M=Mg, Zn, Cd): an $ab-initio$ comparative perspective
• Role of crystal field ground state in the classical spin-liquid behavior of a quasi-one dimensional spin-chain system Sr3NiPtO6
• Magnetic ground state and excitations in mixed 3$d$-4$d$ quasi-1D spin-chain oxide Sr${}_3$NiRhO${}_6$