Topological flat bands (TFBs) have been proposed in Chern-insulator lattice models. Some
two-dimensional monolayer systems can host TFBs with the Chern number| C|= 1, and some …

We study the quantum phases driven by interaction in a semimetal with a quadratic band
touching at the Fermi level. By combining the density matrix renormalization group (DMRG) …

In recent years, a number of bulk materials and heterostructures have been explored due
their connections with exotic materials phenomena emanating from flat band physics and …

We study the interplay between spin-orbit coupling (SOC) and Coulomb repulsion in a
Hubbard model on a decorated honeycomb lattice which leads to a plethora of phases …

Interaction-driven topological phases significantly enrich the class of topological materials
and thus are of great importance. Here, we study the phase diagram of interacting spinless …

We study the quantum phases of spinless fermions at one-third filling on a kagome lattice
featuring a quadratic band touching Fermi point. In the presence of weak first and second …

Attractive interaction between spinless fermions in a two-dimensional lattice drives the
formation of a topological superfluid. But the topological phase is dynamically unstable …

We report 10 ground states arising from strong correlations in the single-orbital Hubbard
model on the decorated honeycomb lattice, including Dirac metals, flat-band ferromagnets …