论文标题
Hyperhoneycomb Kitaev磁铁$β$ -Zniro $ _3 $中的量子promagnetism
Quantum paramagnetism in the hyperhoneycomb Kitaev magnet $β$-ZnIrO$_3$
论文作者
论文摘要
通过拓扑化学反应合成了HyperhoneyComb iRation $β$ -Zniro $ _3 $的多晶样品，并研究了其结构，磁性和热力学特性。磁化和热容量数据表明，至少没有远程磁性秩序至少降至2 k。正质库里温度$θ_W\ sim 45 $ k受磁敏感性的温度依赖性所探测的，这表明Kitaev相互作用是主要的。这些观察结果表明量子自旋液体可能已经实现。此外，观察线性温度依赖性对热容量的贡献，而无磁场效应证据无差异激发。这些事实令人惊讶地与晶体学分析所证明的化学疾病相反。通过讨论2D和3D Kitaev磁铁中Z $ _2 $ - 流量的尺寸效应的差异，我们建议有一种隐藏的机制来保护量子旋转液态免受化学疾病的侵害。
A polycrystalline sample of the hyperhoneycomb iridate $β$-ZnIrO$_3$ was synthesized via a topochemical reaction, and its structural, magnetic, and thermodynamic properties were investigated. The magnetization and heat capacity data show the absence of long-range magnetic order at least down to 2 K. A positive Curie-Weiss temperature $θ_W \sim 45$ K probed by the temperature dependence of magnetic susceptibility indicates that a Kitaev interaction is dominant. These observations suggest that a quantum spin liquid may have been realized. Furthermore, the observation of linear temperature-dependent contribution to the heat capacity with no magnetic field effect evidences gapless excitation. These facts are surprisingly contrary to the chemical disorder evidenced by the crystallographic analysis. By discussing the differences in the size effect of Z$_2$-fluxes in 2D and 3D Kitaev magnets, we propose that there is a hidden mechanism to protect the quantum spin liquid state from chemical disorder.
