Two-dimensional Kagome Materials: Theoretical Insights, Experimental Realizations, and Electronic Structures

TL;DR

This paper reviews recent progress in the development, experimental realization, and electronic characterization of two-dimensional kagome materials, highlighting their unique emergent phenomena and potential for future research.

Contribution

It provides a comprehensive overview of the geometric, electronic, and experimental aspects of 2D kagome materials, summarizing recent advancements and future outlooks.

Findings

Progress in constructing 2D kagome materials

Experimental realizations of 2D kagome systems

Electronic structure characterizations of 2D kagome materials

Abstract

In recent years, kagome materials have attracted significant attention due to their rich emergent phenomena arising from the quantum interplay of geometry, topology, spin, and correlations. However, in the search for kagome materials, it has been found that bulk compounds with electronic properties related to the kagome lattice are relatively scarce, primarily due to the hybridization of kagome layers with adjacent layers. Therefore, researchers have shown increasing interest in the discovery and construction of two-dimensional (2D) kagome materials, aiming to achieve clean kagome bands near the Fermi level in monolayer or few-layer systems. Substantial advancements have already been made in this area. In this review, we summarize the current progress in the construction and development of 2D kagome materials. We begin by introducing the geometric and electronic structures of the kagome lattice model and its variants, followed by discussions on the experimental realizations and electronic structure characterizations of 2D kagome materials. Finally, we provide an outlook on the future developments of 2D kagome materials.