论文标题
对电子掺杂的热点的障碍影响
Disorder effects on hot spots in electron-doped cuprates
论文作者
论文摘要
在二维中的抗磁磁波动会导致在与电子掺杂的伪造相关的所谓热点处的光谱重量减少。在2D Hubbard模型中，当满足Vilk标准时，即自旋相关长度超过热点de Broglie波长时，就会发生这些热点。使用两个粒子自洽的方法，我们在这里表明，当添加足够的混乱时，该标准可能会在抗铁磁量子临界点附近违反。与Matthiessen的规则相矛盾，静态疾病会减少非弹性散射，从而导致量子临界点位置的转移以及对热点出现的条件的修改。这为研究疾病，抗磁性波动和电子掺杂的酸酸盐的超导性之间的相互作用开辟了道路。
Antiferromagnetic fluctuations in two dimensions cause a decrease in spectral weight at so-called hot spots associated with the pseudogap in electron-doped cuprates. In the 2D Hubbard model, these hot spots occur when the Vilk criterion is satisfied, namely when the spin correlation length exceeds the thermal de Broglie wavelength. Using the two-particle self-consistent approach, here we show that this criterion may be violated near the antiferromagnetic quantum critical point when sufficient disorder is added to the model. Static disorder decreases inelastic scattering, in contradiction with Matthiessen's rule, leading to a shift in the position of the quantum critical point and a modification of the conditions for the appearance of hot spots. This opens the road to a study of the interplay between disorder, antiferromagnetic fluctuations and superconductivity in electron-doped cuprates.
