论文标题
通过Nernst效应探测的铁基超导体的相图，无处不在增强列神经波动
Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect
论文作者
论文摘要
多年来，列明波动在非常规超导性方面的作用一直是激烈的讨论。在基于铁的超导体中，最成熟的电子敏化波动探针，即弹性稳定性似乎暗示了超导性通过电子纽约的波动加强，因为弹性稳定性振幅峰值或接近最佳$ t_c $。然而，在超导圆顶的过度掺杂侧，弹性稳定性的减小表明，超导性机理的重要性可忽略不计。 Here we introduce the Nernst coefficient as a genuine probe for electronic nematic fluctuations, and we show that the amplitude of the Nernst coefficient tracks the superconducting dome of two prototype families of iron-based superconductors, namely Rh-doped $BaFe_{2}As_{2}$ and Co-doped $LaFeAsO$.因此，我们的数据提供了新的证据，表明在这些系统中，在整个相图中促进了在整个相位图中的超导性。
The role of nematic fluctuations for unconventional superconductivity has been subject of intense discussions for many years. In iron-based superconductors, the most established probe for electronic-nematic fluctuations, i.e. the elastoresistivity seems to imply that superconductivity is reinforced by electronic-nematic fluctuations, since the elastoresistivity amplitude peaks at or close to optimal $T_C$. However, on the over-doped side of the superconducting dome, the diminishing elastoresistivity suggests a negligible importance in the mechanism of superconductivity. Here we introduce the Nernst coefficient as a genuine probe for electronic nematic fluctuations, and we show that the amplitude of the Nernst coefficient tracks the superconducting dome of two prototype families of iron-based superconductors, namely Rh-doped $BaFe_{2}As_{2}$ and Co-doped $LaFeAsO$. Our data thus provide fresh evidence that in these systems nematic fluctuations foster the superconductivity throughout the phase diagram.
