标题： 埃默里模型中增强的超导关联及其与奇异金属输运和正常态相干性的联系 显示英文标题

标题： Enhanced superconducting correlations in the Emery model and its connections to strange metallic transport and normal state coherence

摘要： 在单带 Hubbard 模型中，超导性的数值证据仍然难以捉摸或模糊不清，尽管进行了广泛的研究，这引发了关于单带 Hubbard 模型是否是铜氧化物的忠实低能有效模型的问题，以及是否明确包含氧离子可以恢复超导转变所需的特性。 在这里，我们通过使用掺杂二维三带 Emery 模型的数值精确行列式量子蒙特卡洛 (DQMC) 模拟，表明虽然单带模型表现出显著的 T 线性输运行为，但三带模型在低温下显示出电阻率曲率，表明向更金属输运区域的过渡。 在热力学和超导测量中也发现了证据，这表明输运中某种程度的一致性可能是铜氧化物高温超导性的必要条件，进一步暗示了超导性和输运行为之间可能存在联系。 显示英文摘要

摘要： Numerical evidence for superconductivity in the single-band Hubbard model is elusive or ambiguous despite extensive study, raising the question of whether the single-band Hubbard model is a faithful low energy effective model for cuprates, and whether explicitly including the oxygen ions will recover the properties necessary for superconducting transition. Here we show, by using numerically exact determinant quantum Monte Carlo (DQMC) simulations of the doped two-dimensional three-band Emery model, that while the single-band model exhibits strikingly T-linear transport behavior, the three-band model shows a low temperature resistivity curvature indicating a crossover to a more metallic transport regime. Evidence has also been found in thermodynamic and superconducting measurements, which suggests that some degree of coherence in transport might be necessary for the high-temperature superconductivity in cuprates, further implying a possible connection between superconducting and transport behaviors.