共振激子态的角分辨光发射光谱特征
Angle Resolved Photo-Emission Spectroscopy signature of the Resonant Excitonic State
摘要：
我们计算了谐振激子态（RES）的角分辨光电子能谱（ARPES）特征，该共振激子态被提出作为铜氧化物超导体的伪能隙态[ArXiv 1510.03038]。这种新的状态可以被描述为一组激子（粒子-空穴）补丁与内部棋盘调制。在这里，我们建模的RES作为一个电荷顺序与$\bf{2p_{F}}$波矢量，其中$\bf{2p_{F}}$是有序矢量连接两个相对的费米面。我们计算了RES的谱权和态密度，发现我们的模型正确地再现了Bi-2201中PG的开口。
英文摘要：
We calculate the Angle Resolved PhotoEmission Spectroscopy (ARPES) signature of the Resonant Excitonic State (RES) that was proposed as the Pseudo-Gap state of cuprate superconductors [ArXiv 1510.03038]. This new state can be described as a set of excitonic (particle-hole) patches with an internal checkerboard modulation. Here, we modelize the RES as a charge order with $\bf{2p_{F}}$ wave vectors, where $\bf{2p_{F}}$ is the ordering vector connecting two opposite sides of the Fermi surface. We calculate the spectral weight and the density of states in the RES and we find that our model correctly reproduces the opening of the PG in Bi-2201.
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