Nature of the magnetic interactions in Sr3NiIrO6

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Iridates abound with interesting magnetic behaviors because of their strong spin-orbit coupling. Sr3NiIrO6 brings together the spin-orbital entanglement of the Ir4+ ion with a 3d 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 anisotropy.

Original languageEnglish (US)
Article number134432
JournalPhysical Review B
Issue number13
Publication statusPublished - Oct 18 2018


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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