Compounds featuring kagome lattice can have interesting properties, ranging from formation of quantum spin liquids, over massless or massive Dirac fermions, to superconductivity. These properties are rooted in the symmetry of the kagome lattice, which gives rise to Dirac cones and flat bands. However, not all materials hosting a kagome lattice have unusual properties that related to it.<br/>Simple chemical concepts can help predict if properties of a compound will be dictated by the kagome net. To derive these rules, we first search though Inorganic Crystal Structure Database and find all compounds in which kagome lattice is present. In the next steps, we use simple chemical concepts, such as electronegativity, number of valence electrons, and typical bond lengths, to derive the rules and predict existence of bands arising from the kagome net and their relative energy with respect to the Fermi level. The understanding we gain allows us to divide all known compounds with the kagome net into the ones likely to have properties related to it and the ones that are not and propose good candidates for the future studies. Furthermore, these rules can help engineer novel kagome compounds with desired properties.

Search for simple chemical rules predicting properties of kagome materials

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