论文标题
在关键掺杂之外的铜塔超导体中的电荷密度波
Charge density waves in cuprate superconductors beyond the critical doping
论文作者
论文摘要
经常以紧急电子顺序讨论库酸酯的非常规的正常状态特性，该序列以下是XC = 0.19的推定临界掺杂的侵蚀。电荷密度波（CDW）相关性代表这样的顺序；但是，此类顺序的实验证据通常跨越有限的掺杂范围，而掺杂量不足XC的临界值，从而导致有关其基本相关性的问题。在这里，我们使用X射线衍射来证明LA2-XSRXCUO4中的CDW相关性持续到至少X = 0.21的掺杂。尽管Fermi表面拓扑和电子传输在这种兴奋剂时发生了变化，但通过超导过渡通过超导过渡显示了强烈的变化，但没有明显的不连续性。这些结果证明了CDW和超导性之间的相互作用，即使在过度的铜层中，也促使重新考虑CDW相关性在高温铜层相图中的作用。
The unconventional normal-state properties of the cuprates are often discussed in terms of emergent electronic order that onsets below a putative critical doping of xc = 0.19. Charge-density wave (CDW) correlations represent one such order; however, experimental evidence for such order generally spans a limited range of doping that falls short of the critical value xc, leading to questions regarding its essential relevance. Here, we use x-ray diffraction to demonstrate that CDW correlations in La2-xSrxCuO4 persist up to a doping of at least x = 0.21. The correlations show strong changes through the superconducting transition, but no obvious discontinuity through xc = 0.19, despite changes in Fermi surface topology and electronic transport at this doping. These results demonstrate the interaction between CDWs and superconductivity even in overdoped cuprates and prompt a reconsideration of the role of CDW correlations in the high-temperature cuprate phase diagram.
