论文标题
通过库仑工程的局部互动诱导多体拓扑状态
Inducing a many-body topological state of matter through Coulomb-engineered local interactions
论文作者
论文摘要
托管拓扑激发的人工系统的工程是当前冷凝物质研究的核心。这些努力的大多数都集中在单粒子特性上，通过基本多体相互作用的修改忽略了可能的工程途径。有趣的是，最近的实验突破表明，库仑相互作用可以通过底物筛选工程有效控制。受这一成功的启发，我们提出了一个简单的平台，在该平台中，拓扑上的非体内多体激发仅从介型工程的库仑相互作用中出现，在原本拓扑琐碎的单颗粒带结构中。此外，通过对筛选工程进行现实的显微镜建模，我们演示了如何在诸如量子点链等一维系统中实现我们的建议。我们的结果提出了库仑工程作为创造拓扑激发的强大工具，并在各种固态平台中使用了潜在的应用。
The engineering of artificial systems hosting topological excitations is at the heart of current condensed matter research. Most of these efforts focus on single-particle properties neglecting possible engineering routes via the modifications of the fundamental many-body interactions. Interestingly, recent experimental breakthroughs have shown that Coulomb interactions can be efficiently controlled by substrate screening engineering. Inspired by this success } we propose a simple platform in which topologically non-trivial many-body excitations emerge solely from dielectrically-engineered Coulomb interactions in an otherwise topologically trivial single-particle band structure. Furthermore, by performing a realistic microscopic modeling of screening engineering, we demonstrate how our proposal can be realized in one-dimensional systems such as quantum-dot chains. Our results put forward Coulomb engineering as a powerful tool to create topological excitations, with potential applications in a variety of solid-state platforms.
