Theoretical investigation of magnetic dynamics in alpha-RuCl3
Theoretical investigation of magnetic dynamics in alpha-RuCl3
复制标题
α-RuCl3 磁动力学的理论研究
DOI：
10.1103/physrevb.96.115103
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发表时间：
2017
影响因子：
3.7
通讯作者：
Li Jian-Xin
中科院分区：
文献类型：
--
作者：
Wang Wei;Dong Zhao-Yang;Yu Shun-Li;Li Jian-Xin
We study spin-wave excitations inby the spin-wave theory. Starting from the five-orbital Hubbard model and the perturbation theory, we derive an effective isospin-model in the large Hubbard () limit. Based on the energy-band structure calculated from the first-principles method, we find that the effective model can be further reduced to themodel containing a ferromagnetic nearest-neighbor (NN) Kitaev interaction () and a NN off-diagonal exchange interaction (). With the spin-wave theory, we find that themodel can give magnetic excitations, which is consistent with recent neutron-scattering experiments.
