Zigzag Magnetic Order in the Iridium Oxide Na2IrO3

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Authors	CHALOUPKA Jiří JACKELI George KHALIULLIN Giniyat
Year of publication	2013
Type	Article in Periodical
Magazine / Source	Physical Review Letters
MU Faculty or unit	Central European Institute of Technology
Citation
Web	http://prl.aps.org/abstract/PRL/v110/i9/e097204
Doi	http://dx.doi.org/10.1103/PhysRevLett.110.097204
Field	Solid matter physics and magnetism
Keywords	layered iridates; quantum magnetism; spin-orbital entanglement;
Description	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, spin wave spectra, and zigzag order parameter are calculated and compared to the experimental data, obtaining thereby the spin coupling constants in Na2IrO3 and Li2IrO3.
Related projects:	CEITEC - Central European Institute of Technology SYLICA - Synergies of Life and Material Sciences to Create a New Future