Dynamical properties of the honeycomb-lattice iridates Na2IrO3
Dynamical properties of the honeycomb-lattice iridates Na2IrO3
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蜂窝晶格铱酸盐Na2IrO3的动力学性质
DOI：
10.1103/physrevb.92.184411
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and S. Suga
中科院分区：
文献类型：
--
作者：
T. Suzuki;T. Yamada;Y. Yamaji;and S. Suga
我们研究的动力学性质。对于提出的五个有效模型，我们用精确对角化方法数值计算了动力学结构因子。从量子化学的初始计算中得到的一个有效的模型充分地解释了中子非弹性散射实验。我们进一步计算激发模式的基础上线性自旋波理论。从头计算得到的有效模型的自旋波激发与DSFs的低激发不一致。我们将这种差异归因于Kitaev自旋液相在相边界附近的参数空间中的位置。
We investigate the dynamical properties of. For five effective models proposed for, we numerically calculate dynamical structure factors (DSFs) with an exact diagonalization method. An effective model obtained fromab initiocalculations explains inelastic neutron scattering experiments adequately. We further calculate excitation modes based on linearized spin-wave theory. The spin-wave excitation of the effective models obtained byab initiocalculations disagrees with the low-lying excitation of DSFs. We attribute this discrepancy to the location ofin a parameter space close to the phase boundary with the Kitaev spin-liquid phase.