"A flat band in a band structure is a very special type of frequency band where the group velocity remains zero across all wavenumbers," Bilal explains. "In practical terms, this means that sound ...

Kagome lattice is compoed of a network of corner-sharing triangles and can host Dirac Fermions, the flat bands and the van Hove singularities. When combined with magnetism, plenty of topological ...

Bandgap refers to a region of an element’s crystal’s electronic band structure through which electrons can’t pass. Also referred to as an energy gap, bandgap is a concept in solid-state physics and ...