On the relationship between charge ordering and the Fermi arcs observed in underdoped high T c ?> superconductors
On the relationship between charge ordering and the Fermi arcs observed in underdoped high T c ?> superconductors
复制标题
DOI：
10.1088/1367-2630/16/6/063025
复制
发表时间：
2014-01
影响因子：
3.3
通讯作者：
N. Harrison;S. Sebastian
中科院分区：
文献类型：
--
作者：
N. Harrison;S. Sebastian
我们讨论了最近在欠掺杂高温超导铜酸盐的角度分辨光电发射测量中发现的电荷有序波矢与费米弧尖之间的动量-空间分离之间密切对应的起源。这一观察结果被解释为电荷有序形成的特征，是不同来源的先前存在的费米弧不稳定性的结果。我们计算了电荷密度波模型的费米面谱权重，考虑了费米面、电荷有序波矢和与实验结果相似的短关联长度。我们表明，通过剩余费米面的尖端观察到的波矢是费米面通过电荷顺序重构的自然结果。因此，不能排除短程电荷有序的存在是观测到的费米弧的一个潜在来源。
We address the origin of the recently discovered close correspondence between the charge ordering wave vectors and the momentum-space separation between the tips of the Fermi arcs seen in angle-resolved photoemission measurements in underdoped high-temperature superconducting cuprates. This observation has been interpreted as a signature of charge order forming as an instability of pre-existing Fermi arcs of a different origin. We calculate the Fermi surface spectral weight for a charge density-wave model, considering a Fermi surface, charge ordering wave vectors and short correlation lengths similar to those found experimentally. We show that the observation of wave vectors spanning the tips of remnant Fermi surface sections is a natural consequence of a Fermi surface having been reconstructed by charge order. The presence of short-range charge order therefore cannot be ruled out as a potential origin of the observed Fermi arcs.