论文标题
在电荷密度波转换的临界状态下，异常热传输和违反Wiedemann-Franz定律
Anomalous thermal transport and violation of Wiedemann-Franz law in the critical regime of a charge density wave transition
论文作者
论文摘要
将ERTE $ _3 $作为模型系统研究，以探索分层电荷密度波（CDW）材料中的热传输。我们介绍了来自热扩散率，电阻率和特定热量测量值的数据：在CDW过渡温度下，平行和垂直于主要CDW的热导率急剧下降。同时，电阻率更逐渐变化。相应地，虽然远高于$ t_c $，但对热传输的一致描述适用于基本独立的电子和声子贡献（使用Wiedemann Franz Law估算），但在关键方案中，没有可能的描述；观察到的行为对应于强烈耦合的电子 - phonon临界“汤”。
ErTe$_3$ is studied as a model system to explore thermal transport in a layered charge density wave (CDW) material. We present data from thermal diffusivity, resistivity, and specific heat measurements: There is a sharp decrease in thermal conductivity both parallel and perpendicular to the primary CDW at the CDW transition temperature. At the same time, the resistivity changes more gradually. Correspondingly, while well above and below $T_c$, a consistent description of the thermal transport applies with essentially independent electron and phonon contributions (estimated using the Wiedemann Franz law), in the critical regime no such description is possible; the observed behavior corresponds to a strongly coupled electron-phonon critical `soup.'
