论文标题
在扭曲的同型异质结构中，强烈相关的激子 - 核酸杆菌
Strongly correlated exciton-polarons in twisted homo-bilayer heterostructures
论文作者
论文摘要
我们考虑通过在栅极控制的扭曲型同层异质结构中通过强相关的电子对激发性特性的敷料。 Moiré电位和库仑相互作用的综合作用支持不同的强相关阶段的形成，具体取决于填充物，包括在整数职业中的电荷订购的金属或不可压缩的绝缘子。激子和电子之间的耦合导致激子共振分解为有吸引力和排斥的极性峰。分析激子 - 龙光子在系统的不同阶段的特性，我们揭示了频谱的不连续演变，并在排斥极化的分支中形成了双峰结构。非整数填充物出现了双峰结构，它受到靠近费米水平和高能双龙激发的准粒子状态之间的能量分离来控制。我们的结果表明，激子 - 波隆具有清晰的电子相关标志，因此提供了直接的签名，即在栅极控制的异质结构中相关驱动的绝缘体形成。
We consider dressing of excitonic properties by strongly correlated electrons in gate controlled twisted homo-bilayer heterostructures. The combined effect of the moiré potential and the Coulomb interaction supports the formation of different strongly correlated phases depending on the filling, including charge-ordered metals or incompressible insulators at integer occupation. The coupling between excitons and electrons results in a splitting of the excitonic resonance into an attractive and a repulsive polaron peak. Analyzing the properties of the exciton-polarons across the different phases of the system, we reveal a discontinuous evolution of the spectrum with the formation of a double-peak structure in the repulsive polaron branch. The double-peak structure emerges for non-integer fillings and it is controlled by the energy separation between the quasi-particle states close to the Fermi level and the high-energy doublons excitations. Our results demonstrate that exciton-polarons carry a clear hallmark of the electronic correlations and, thus, provide a direct signature of the formation of correlation driven insulators in gate controlled heterostructures.
