论文标题
热门电导率的普遍行为
Universal behavior of the thermal Hall conductivity
论文作者
论文摘要
我们报告了相关系统中的霍尔电导率的理论和实验分析。对于具有非平凡拓扑的费米子和骨气激发，我们表明在“中间”温度下，热霍尔电导率表现出意外的通用缩放，并具有简单的指数形式。在低温下，它的行为不同，反映了潜在激发的光谱特性。我们的预测被研究为两个原型化合物中的示例，即量子副srtio $ _3 $和旋转液体化合物rucl $ _3 $。我们提出的最小现象学模型可以在很大程度上涵盖实验数据，而独立于微观细节，揭示了Srtio $ _3 $中的主导效果，并在RUCL $ _3 $中散发出宽大的费尔米米金激发。我们的工作建立了微观模型和实验数据之间的现象学联系，并为分析广泛温度区域的相关系统中的热门电导率提供了统一的基础。
We report theoretical and experimental analyses of the thermal Hall conductivity in correlated systems. For both fermionic and bosonic excitations with nontrivial topology, we show that at "intermediate" temperatures, the thermal Hall conductivity exhibits an unexpected universal scaling with a simple exponential form. At low temperatures, it behaves differently and reflects the spectral properties of underlying excitations. Our predictions are examined as examples in two prototype compounds, the quantum paraelectric SrTiO$_3$ and the spin-liquid compound RuCl$_3$. The experimental data can be largely covered by our proposed minimal phenomenological model independent of microscopic details, revealing dominant bosonic contributions in SrTiO$_3$ and gapped fermionic excitations in RuCl$_3$. Our work establishes a phenomenological link between microscopic models and experimental data and provides a unified basis for analyzing the thermal Hall conductivity in correlated systems over a wide temperature region.
