Nature of the magnetic interactions in Sr3NiIrO6

被引：10
作者：
Birol, Turan [1 ,2 ]
Haule, Kristjan [1 ]
Vanderbilt, David [1 ]
机构：
[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
[2] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA
来源：
PHYSICAL REVIEW B | 2018年 / 98卷 / 13期
关键词：
TOTAL-ENERGY CALCULATIONS; ONE-DIMENSIONAL OXIDES; PHYSICS;
D O I：
10.1103/PhysRevB.98.134432
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：7
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