论文标题
一维库酸酯中电子音波耦合的痕迹
Traces of Electron-Phonon Coupling in One-Dimensional Cuprates
论文作者
论文摘要
一维（1D）铜土材料中某些光谱特征的出现归因于电子之间强大的吸引力耦合。在这里，使用哈伯德扩展的荷斯坦模型的时间依赖性密度矩阵重质化组方法，我们表明，扩展的电子phonon（{\ it e-ph}）耦合耦合提出了一种明显的选择，可以选择一种有吸引力的相互作用，可以产生一种有吸引力的相互作用，可以重现观察到的光谱特征和掺杂型$ poffience $ specyefence $ sige $ sigeforpect $ sigeformed $ sigeforpect $ sigeforpect $ sigeforment $ sigeforment $ sigeformed $ sigeformed $ sigeformed $ sigeformed $ sigefiment：圆形分支的突出光谱强度和正确的圆环宽度。与Hubbard模型相比，虽然扩展{\ it e-ph}耦合并未定性地改变1D系统的基态，但它定量增强了远程超导相关性并抑制自旋相关性。这种扩展的{\ it e-ph}相互作用可能是描述结构相似的二维高温超导层层次的物理学的重要成分，这可能会使统一的订单之间的平衡倾向于统一的$ d $ d $ - $ d $ - 波 - 波 - 波动超导导性。
The appearance of certain spectral features in one-dimensional (1D) cuprate materials has been attributed to a strong, extended attractive coupling between electrons. Here, using time-dependent density matrix renormalization group methods on a Hubbard-extended Holstein model, we show that extended electron-phonon ({\it e-ph}) coupling presents an obvious choice to produce such an attractive interaction that reproduces the observed spectral features and doping dependence seen in angle-resolved photoemission experiments: diminished $3k_F$ spectral weight, prominent spectral intensity of a holon-folding branch, and the correct holon band width. While extended {\it e-ph} coupling does not qualitatively alter the ground state of the 1D system compared to the Hubbard model, it quantitatively enhances the long-range superconducting correlations and suppresses spin correlations. Such an extended {\it e-ph} interaction may be an important missing ingredient in describing the physics of the structurally similar two-dimensional high-temperature superconducting layered cuprates, which may tip the balance between intertwined orders in favor of uniform $d$-wave superconductivity.
