Line-graph-lattice crystal structures of stoichiometric materials

Christie S. Chiu, Annette N. Carroll, Nicolas Regnault, Andrew A. Houck

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The origin of many quantum-material phenomena is intimately related to the presence of flat electronic bands. In quantum simulation, such bands have been realized through line-graph lattices, a class of lattices known to exhibit flat bands. Based on that work, we conduct a high-throughput screening for line-graph lattices among the crystalline structures of the Materials Flatband Database and report on new candidates for line-graph materials and lattice models. In particular, we find materials with line-graph-lattice structures beyond the two most commonly known examples, the kagome and pyrochlore lattices. We also identify materials that may exhibit flat topological bands. Finally, we examine the various line-graph lattices detected and highlight those with gapped flat bands and those most frequently represented among this set of materials. With the identification of real stoichiometric materials and theoretical lattice geometries, the results of this work may inform future studies of flat-band many-body physics in both condensed matter experiment and theory.

Original languageEnglish (US)
Article number023063
JournalPhysical Review Research
Issue number2
StatePublished - Jun 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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