标题： 掺杂莫特绝缘体在板状几何结构中的费米面重构特征 显示英文标题

标题： Signatures of the Fermi surface reconstruction of a doped Mott insulator in a slab geometry

摘要： 我们利用动力学聚簇近似法研究了块状几何结构中的空穴掺杂莫特绝缘体。 我们表明，表面处关联强度的增强导致层投影费米面的显著演化，在最表层表现出类似空穴的口袋，但在内层逐渐演变为单一的类似电子的表面。 我们进一步分析了由表面诱导的弗里德尔振荡的行为，并识别了作为空穴掺杂函数的费米面重构的显著特征。 此外，我们引入了一个计算上易于处理的量，通过同时破坏Luttinger定理来诊断相同的费米面变化。 后者的量和弗里德尔振荡都作为费米面拓扑变化的可靠指标，无需动量空间中的任何周期化。 显示英文摘要

摘要： We investigate a hole-doped Mott insulator in a slab geometry using the dynamical cluster approximation. We show that the enhancement of the correlation strength at the surface results in the remarkable evolution of the layer-projected Fermi surface, which exhibits hole-like pockets in the superficial layers, but gradually evolves into a single electron-like surface in the innermost layers. We further analyze the behavior of the Friedel oscillations induced by the surface and identify distinct signatures of the Fermi surface reconstruction as function of hole-doping. In addition, we introduce a computationally tractable quantity that diagnoses the same Fermi surface variation by the concurrent breakdown of Luttinger's theorem. Both the latter quantity and the Friedel oscillations serve as reliable indicators of the change in Fermi surface topology, without the need for any periodization in momentum space.