论文标题
由于旋转轨道耦合的蜂窝晶格irate cdiro $ _3 $ $ _3 $
Strong antiferromagnetic interaction owing to a large trigonal distortion in the spin-orbit-coupled honeycomb lattice iridate CdIrO$_3$
论文作者
论文摘要
我们研究了Ir $^{4+} $ ions通过固态元理制备制备的蜂窝晶格的Ilmenite型iRate cdiro $ _3 $的磁性特性。使用粉末样品的磁化测量结果显示出较大的有效磁矩和相当强的抗铁磁相互作用，表明与Kitaev模型有偏差。考虑到cdiro $ _3 $中的磁性与晶体结构之间的关系，与其他iLmenite-type相比，iridates zniro $ _3 $和mgiro $ _3 $，我们得出结论，结论是绝缘cdiro $ _3 $不能被描述为$ j _ _ _ _ {\ rm eff} {\ rm eff} = 1/2 $ 2 $ 2/2 $ 2/2 $ 2/2/2 IRO $ _6 $ octahedra的扭曲。
We investigated the magnetic properties of the ilmenite-type iridate CdIrO$_3$ with a honeycomb lattice formed by Ir$^{4+}$ ions prepared via a solid-state metathesis. The magnetization measurements with using the powder sample reveal a large effective magnetic moment and a fairly strong antiferromagnetic interaction, indicating a deviation from the Kitaev model. Considering the relationship between magnetism and crystal structure in CdIrO$_3$ with comparing with the other ilmenite-type iridates ZnIrO$_3$ and MgIrO$_3$, we conclude that insulating CdIrO$_3$ cannot be describe as a $J_{\rm eff} = 1/2$ Mott state owing to a metathetically-stabilized large trigonal distortion of IrO$_6$ octahedra.
