Certain lattice wave systems in translationally invariant settings have one or more spectral
bands that are strictly flat or independent of momentum in the tight binding approximation …

The discovery of the quantum spin Hall effect and topological insulators more than a decade
ago has revolutionized modern condensed matter physics. Today, the field of topological …

Moiré superlattices have emerged as a new platform for studying strongly correlated
quantum phenomena, but these systems have been largely limited to van der Waals layer …

In this article, the structural properties, mechanical stability as well as electronic, optical, and
thermoelectric response of novel lead-free Rb 2 ScCuBr 6 and Cs 2 ScCuBr 6 double …

Geometry, whether on the atomic or nanoscale, is a key factor for the electronic band
structure of materials. Some specific geometries give rise to novel and potentially useful …

Topological materials exhibit protected edge modes that have been proposed for
applications in, for example, spintronics and quantum computation. Although a number of …

The destructive interference of wavefunctions in a kagome lattice can give rise to topological
flat bands (TFBs) with a highly degenerate state of electrons. Recently, TFBs have been …

The ground state and transport properties of the Lieb lattice flat band in the presence of an
attractive Hubbard interaction are considered. It is shown that the superfluid weight can be …

Topological insulators represent unique phases of matter with insulating bulk and
conducting edge or surface states, immune to small perturbations such as backscattering …

The highly accurate all electrons full potential linearized augmented plane wave method is
used to calculate structural, electronic, and optical properties of cubic perovskites CsPbM 3 …