论文标题
层间耦合诱导的准粒子
Interlayer Coupling Induced Quasiparticles
论文作者
论文摘要
我们在Keldysh轮廓上的Schwinger功能衍生方法中存在层间耦合，对分层多体电子系统进行了精确处理。我们的透明方法使我们能够通过显示独立的角色杂交和相互作用在产生新的电子和磁激发方面发挥着独立的作用，从而阐明了层间耦合的定义。我们发现层间耦合以诱导位于A层中的各种等离子体，镁和激子，在层之间穿越或沿界面传播。此外，我们预测了界面激发，包括电子孔配对途径，这是由先前忽略的层不连续相互作用促进的。最后，我们简要探讨了在双层方晶格系统上层间耦合的后果。
We present an exact treatment of layered many-body electronic systems in the presence of interlayer coupling within the Schwinger functional derivative approach on the Keldysh contour. Our transparent approach allows us to clarify the definition of interlayer coupling by showing the independent roles hybridization and interactions play in generating new electronic and magnetic excitations. We find interlayer coupling to induce a variety of plasmons, magnons, and excitons, residing within the a layer, traversing between layers, or propagating along the interface. Moreover, we predict interfacial excitations, including an electron-hole pairing pathway, facilitated by previously ignored layer nonconserving interactions. Finally, we briefly explore the consequence of interlayer coupling on a bilayer square lattice system.
