Flat bands–single-particle energy bands–in tight-binding lattices, aka networks, have
attracted attention due to the presence of macroscopic degeneracies and their sensitivity to …

In recent years, 2D materials have been widely used in optical and photonic applications
such as mode lockers, optical switches, polarizers, and optical modulators. As is known …

Photonics can be confined in real space with dispersion vanishing in the momentum space
due to destructive interference. In this Letter, we report the experimental realization of flat …

We present the mean-field phase diagram of electrons in a kagome flat band with repulsive
interactions. In addition to flat-band ferromagnetism, the Hartree-Fock analysis yields …

The Aharonov-Bohm (AB) cage enables localized confinement with nondiffractive
propagation for arbitrary excitation. In this study, we introduce an anti-parity-time (anti-PT) …

One-dimensional Su-Schrieffer-Heeger (SSH) chains are one of the simplest topological
models and have been studied extensively. The two-dimensional (2 D) version has been …

Flat energy bands of model lattice Hamiltonians provide a key ingredient in designing
dispersionless wave excitations and have become a versatile platform to study various …

In this work, we develop a systematic method of constructing flat-band models with and
without band crossings. Our construction scheme utilizes the symmetry and spatial shape of …

We consider manifolds of tunable all-bands-flat (ABF) lattices in dimensions d= 1, 2,
parameterized by a manifold angle parameter θ. We study localization properties of …

Being dispersionless, flat bands on periodic lattices are solely characterized by their
macroscopically degenerate eigenstates: compact localized states (CLSs) in real space and …