CHALOUPKA, Jiří a Giniyat KHALIULLIN. Magnetic anisotropy in the Kitaev model systems Na2IrO3 and RuCl3. Physical Review B. College PK: The American Physical Society, 2016, roč. 94, č. 6, s. nestránkováno, 11 s. ISSN 2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.94.064435. |
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@article{1359905, author = {Chaloupka, Jiří and Khaliullin, Giniyat}, article_location = {College PK}, article_number = {6}, doi = {http://dx.doi.org/10.1103/PhysRevB.94.064435}, keywords = {spin models; magnetism; iridates; Kitaev model}, language = {eng}, issn = {2469-9950}, journal = {Physical Review B}, title = {Magnetic anisotropy in the Kitaev model systems Na2IrO3 and RuCl3}, url = {http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.064435}, volume = {94}, year = {2016} }
TY - JOUR ID - 1359905 AU - Chaloupka, Jiří - Khaliullin, Giniyat PY - 2016 TI - Magnetic anisotropy in the Kitaev model systems Na2IrO3 and RuCl3 JF - Physical Review B VL - 94 IS - 6 SP - nestránkováno EP - nestránkováno PB - The American Physical Society SN - 24699950 KW - spin models KW - magnetism KW - iridates KW - Kitaev model UR - http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.064435 L2 - http://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.064435 N2 - We study the ordered moment direction in the extended Kitaev-Heisenberg model relevant to honeycomb lattice magnets with strong spin-orbit coupling. We utilize numerical diagonalization and analyze the exact cluster ground states using a particular set of spin-coherent states, obtaining thereby quantum corrections to the magnetic anisotropy beyond conventional perturbative methods. It is found that the quantum fluctuations strongly modify the moment direction obtained at a classical level and are thus crucial for a precise quantification of the interactions. The results show that the moment direction is a sensitive probe of the model parameters in real materials. Focusing on the experimentally relevant zigzag phases of the model, we analyze the currently available neutron-diffraction and resonant x-ray-diffraction data on Na2IrO3 and RuCl3 and discuss the parameter regimes plausible in these Kitaev-Heisenberg model systems. ER -
CHALOUPKA, Jiří a Giniyat KHALIULLIN. Magnetic anisotropy in the Kitaev model systems Na2IrO3 and RuCl3. \textit{Physical Review B}. College PK: The American Physical Society, 2016, roč.~94, č.~6, s.~nestránkováno, 11 s. ISSN~2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.94.064435.
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