Magnetic order and spin excitations in the Kitaev-Heisenberg model on a 
honeycomb lattice

Vladimirov, A. A.; Ihle, D.; Plakida, Nikolay M.

doi:10.1134/S106377611606008X

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Magnetic order and spin excitations in the Kitaev-Heisenberg model on a honeycomb lattice

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Plakida, Nikolay M.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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https://link.springer.com/article/10.1134%2FS106377611606008X
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Citation

Vladimirov, A. A., Ihle, D., & Plakida, N. M. (2016). Magnetic order and spin excitations in the Kitaev-Heisenberg model on a honeycomb lattice. Journal of Experimental and Theoretical Physics - JETP, 122(6), 1060-1069. doi:10.1134/S106377611606008X.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-A177-1

Abstract

We consider the quasi-two-dimensional pseudo-spin-1/2 Kitaev-Heisenberg model proposed for A(2)IrO(3) (A = Li, Na) compounds. The spin-wave excitation spectrum, the sublattice magnetization, and the transition temperatures are calculated in the random phase approximation for four different ordered phases observed in the parameter space of the model: antiferromagnetic, stripe, ferromagnetic, and zigzag phases. The N,el temperature and temperature dependence of the sublattice magnetization are compared with the experimental data on Na2IrO3.