用等离子体折纸探测关联态
Probing correlated states with plasmonic origami
摘要：
理解平带材料（如莫尔异质结构）中强关联态的性质是实验和理论研究的前沿。虽然磁输运、扫描探针和光学技术在研究潜在有序的性质方面往往非常成功，但基态的确切性质往往仍然未知。在这里，我们建议利用强的光-物质耦合存在于平带系统中，通过动态介电响应深入了解多体基态的结构。我们认为，由于相关性所产生的系统的有效晶格的扩大，传统的长程等离子体变得“折叠”，产生多波段等离子体光谱。我们详细介绍了几种机制，通过这些机制，等离子体激元光谱的结构和动态介电响应的结构容易受到潜在的秩序揭示有价值的见解，如相互作用驱动的带隙，自旋结构和秩序周期性。
英文摘要：
Understanding the nature of strongly correlated states in flat-band materials (such as moiré heterostructures) is at the forefront of both experimental and theoretical pursuits. While magnetotransport, scanning probe, and optical techniques are often very successful in investigating the properties of the underlying order, the exact nature of the ground state often remains unknown. Here we propose to leverage strong light-matter coupling present in the flat-band systems to gain insight through dynamical dielectric response into the structure of the many-body ground state. We argue that due to the enlargement of the effective lattice of the system arising from correlations, conventional long-range plasmon becomes ``folded'' to yield a multiband plasmon spectrum. We detail several mechanisms through which the structure of the plasmon spectrum and that of the dynamical dielectric response is susceptible to the underlying order revealing valued insights such as the interaction-driven band gaps, spin-structure, and the order periodicity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
