论文标题
分数化对密度波情景中的电子光谱函数
Electronic spectral function in fractionalized Pair Density Wave scenario
论文作者
论文摘要
通过角度分辨的光发射光谱法对铜岩中电子光谱功能的研究揭示了在超导阶段持续存在的伪gap相中的异常特征。我们在这里基于最近提出的观察结果，即假立假子是由于调制粒子粒子对（一对密度波）分别为均匀的粒子粒子和调制粒子孔对的分数化引起的。可以看出这两种对之间出现的约束对于伪制能量量表具有振幅。该约束直接在伪段中直接修改电子光谱函数。我们为伪幅度振幅得出了一个自洽的方程，并表明它导致了费米弧的形成。在反营业区获得的频段分散与PB $ _ {0.55} $ bi $ $ _ {1.5} $ _ {1.5} $ sr $ _ {1.6} $ la $ _ {0.4} $ _ {0.4} $ cuo $ $ _ {6+δ} $（for to to to to to to to a formi and for an Cheep-age and Formia），与实验性ARPES观察非常吻合抗末期区域。我们还讨论了伪群和超导状态中ARPES光谱的温度依赖性。
Studies of the electronic spectral function in cuprates by Angle-Resolved Photo-Emission Spectroscopy reveal unusual features in the pseudogap phase that persist in the superconducting phase. We address here these observations based on the recently proposed idea that the pseudogap is due to the fractionalization of modulated particle-particle pairs (a Pair Density Wave) into uniform particle-particle and modulated particle-hole pairs. The constraint that appears between these two types of pairs can be seen has an amplitude for the pseudogap energy scale. This constraint directly modify the electronic spectral function in the pseudogap phase. We derive a self-consistent equation for the pseudogap amplitude and show that it leads to the formation of Fermi arcs. The band dispersion obtained in the anti-nodal region is in good agreement with experimental ARPES observations in Pb$_{0.55}$Bi$_{1.5}$Sr$_{1.6}$La$_{0.4}$CuO$_{6+δ}$ (Bi2201) and present a back-bending that goes to the Fermi level as we go away from the antinodal region. We also discuss the temperature dependence of the ARPES spectrum in the pseudogap and in the superconducting state.
