2018/05/31 by Turan Birol, Kristjan Haule, David Vanderbilt
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Chemistry #Condensed matter physics #Coupling (piping) #Crystallography #Ferrimagnetism #Ion #Magnetic and transport properties of perovskites and related materials #Magnetic anisotropy #Magnetic field #Magnetization #Materials science #Multiferroics and related materials #Nuclear magnetic resonance #Physics #Quantum mechanics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.98.134432
published as Phys. Rev. B 98, 134432 (2018) · 7 pages, 5 figures
openalex created_date 2018/05/17 · arxiv created 2018/10/11 · openalex publication_date 2018/10/18 · arxiv updated 2018/10/19 · openalex updated_date 2026/08/06
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.