论文标题
BI基丘陵中淋巴结相干光谱的无处不在抑制
Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates
论文作者
论文摘要
高温超导蛋糕表现出对低能量基本激发的有趣现象学。特别是，在超导阶段观察到了相干光谱（CSW）的非常规温度依赖性，这是通过角度分辨光发射光谱（ARPES）在D-Wave Paring Gap最大的ANTINODE上以及沿着无间隙的节点方向上的ANTINODE上观察到的。在这里，我们将平衡和时间分辨的ARPE结合在一起，以跟踪具有前所未有的灵敏度的BI基丘陵中鼻CSW的温度依赖性崩溃。我们发现，在单层和双层BI丘陵中，温度升高时CSW的淋巴结抑制是无处不在的，并且与超导和伪PSEUDOGAP发作温度无关。我们对鼻光谱特征的线形进行了定量模拟，以及在费米 - 液体框架内对CSW的异常抑制，从而确定了正常状态电动力学在超导电库层中淋巴结清理描述中所起的关键作用。
High-temperature superconducting cuprates exhibit an intriguing phenomenology for the low-energy elementary excitations. In particular, an unconventional temperature dependence of the coherent spectral weight (CSW) has been observed in the superconducting phase by angle-resolved photoemission spectroscopy (ARPES), both at the antinode where the d-wave paring gap is maximum, as well as along the gapless nodal direction. Here, we combine equilibrium and time-resolved ARPES to track the temperature dependent meltdown of the nodal CSW in Bi-based cuprates with unprecedented sensitivity. We find the nodal suppression of CSW upon increasing temperature to be ubiquitous across single- and double-layer Bi cuprates, and uncorrelated to superconducting and pseudogap onset temperatures. We quantitatively model both the lineshape of the nodal spectral features and the anomalous suppression of CSW within the Fermi-Liquid framework, establishing the key role played by the normal state electrodynamics in the description of nodal quasiparticles in superconducting cuprates.
