On the Origin of Zigzag Magnetic Order in Iridium Oxide Na2IrO3

Jiří Chaloupka; George Jackeli; Giniyat Khaliullin

doi:10.1103/PhysRevLett.110.097204

On the Origin of Zigzag Magnetic Order in Iridium Oxide Na2IrO3

Strongly Correlated Electrons 2013-03-19 v1

Authors: Jiří Chaloupka , George Jackeli , Giniyat Khaliullin

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Abstract

We explore the phase diagram of spin-orbit Mott insulators on a honeycomb lattice, within the Kitaev-Heisenberg model extended to its full parameter space. Zigzag-type magnetic order is found to occupy a large part of the phase diagram of the model, and its physical origin is explained as due to interorbital t2g-eg hopping. Magnetic susceptibility and spin wave spectra are calculated and compared to the experimental data, obtaining thereby the spin coupling constants in Na2IrO3 and Li2IrO3.

Keywords

zigzag magnetic order Na2IrO3 Kitaev-Heisenberg model spin-orbit Mott insulators honeycomb lattice interorbital hopping

Cite

@article{arxiv.1209.5100,
  title  = {On the Origin of Zigzag Magnetic Order in Iridium Oxide Na2IrO3},
  author = {Jiří Chaloupka and George Jackeli and Giniyat Khaliullin},
  journal= {arXiv preprint arXiv:1209.5100},
  year   = {2013}
}

Comments

5 pages, 4 figures

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