4 papers
Extended Hubbard model in undoped and doped monolayer and bilayer graphene: Selection rules and organizing principle among competing orders
Andras Szabo, Bitan Roy
Performing a leading-order renormalization group analysis, here we compute the effects of generic local or short-range electronic interactions in monolayer and Bernal bilayer graph…
Emergent chiral symmetry in a three-dimensional interacting Dirac liquid
Andras Szabo, Bitan Roy
We compute the effects of strong Hubbardlike local electronic interactions on three-dimensional four-component massless Dirac fermions, which in a noninteracting system possess a m…
Dirty higher-order Dirac semimetal: Quantum criticality and bulk-boundary correspondence
Andras Szabo, Bitan Roy
We analyze the stability of time-reversal () and lattice four-fold () symmetry breaking three-dimensional higher-order topological (HOT) Dirac semimetals (DSMs)…
Strain engineered higher order topological phases for spin-3/2 Luttinger fermions
Andras Szabo, Roderich Moessner, Bitan Roy
Recently, the notion of topological phases of matter has been extended to higher-order incarnations, supporting gapless modes on even lower dimensional boundaries, such as corners…