Topological Quantum Materials with Kagome Lattice

Abstract

Recently, various topological states have undergone a spurt of progress in the field of condensed matter physics. An emerging category of topological quantum materials with kagome lattice has drawn enormous attention. A two-dimensional kagome lattice composed of corner-sharing triangles is a fascinating structural system, which could not only lead to geometrically frustrated magnetism but also have a nontrivial topological electronic structure hosting Dirac points, van Hove singularities, and flat bands. Due to the existence of multiple spin, charge, and orbit degrees of freedom accompanied by the unique structure of the kagome lattice, the interplay between frustrated magnetism, nontrivial topology, and correlation effects is considered to result in abundant quantum states and provides a platform for researching the emergent electronic orders and their correlations.