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Title: Magnetic order and spin excitations in the Kitaev–Heisenberg model on a honeycomb lattice

Abstract

We consider the quasi-two-dimensional pseudo-spin-1/2 Kitaev–Heisenberg model proposed for A{sub 2}IrO{sub 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 Néel temperature and temperature dependence of the sublattice magnetization are compared with the experimental data on Na{sub 2}IrO{sub 3}.

Authors:
 [1];  [2];  [1]
  1. Joint Institute for Nuclear Research (Russian Federation)
  2. Universität Leipzig, Institut für Theoretische Physik (Germany)
Publication Date:
OSTI Identifier:
22617243
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 122; Journal Issue: 6; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; COMPARATIVE EVALUATIONS; EXCITATION; HEISENBERG MODEL; IRIDIUM COMPOUNDS; LITHIUM COMPOUNDS; MAGNETIZATION; OXYGEN COMPOUNDS; RANDOM PHASE APPROXIMATION; RANDOMNESS; SODIUM COMPOUNDS; SPECTRA; SPIN; SPIN WAVES; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Vladimirov, A. A., Ihle, D., and Plakida, N. M., E-mail: plakida@theor.jinr.ru. Magnetic order and spin excitations in the Kitaev–Heisenberg model on a honeycomb lattice. United States: N. p., 2016. Web. doi:10.1134/S106377611606008X.
Vladimirov, A. A., Ihle, D., & Plakida, N. M., E-mail: plakida@theor.jinr.ru. Magnetic order and spin excitations in the Kitaev–Heisenberg model on a honeycomb lattice. United States. doi:10.1134/S106377611606008X.
Vladimirov, A. A., Ihle, D., and Plakida, N. M., E-mail: plakida@theor.jinr.ru. Wed . "Magnetic order and spin excitations in the Kitaev–Heisenberg model on a honeycomb lattice". United States. doi:10.1134/S106377611606008X.
@article{osti_22617243,
title = {Magnetic order and spin excitations in the Kitaev–Heisenberg model on a honeycomb lattice},
author = {Vladimirov, A. A. and Ihle, D. and Plakida, N. M., E-mail: plakida@theor.jinr.ru},
abstractNote = {We consider the quasi-two-dimensional pseudo-spin-1/2 Kitaev–Heisenberg model proposed for A{sub 2}IrO{sub 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 Néel temperature and temperature dependence of the sublattice magnetization are compared with the experimental data on Na{sub 2}IrO{sub 3}.},
doi = {10.1134/S106377611606008X},
journal = {Journal of Experimental and Theoretical Physics},
number = 6,
volume = 122,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}