Flat bands and electronic localization in twisted bilayer graphene nanoribbons
Elías Andrade, Pierre A. Pantaleón, F. Guinea, Gerardo G. Naumis
Abstract
In an infinite twisted bilayer graphene lattice, flat bands emerge, representing electrons localized at the AA stacking regions. This study investigates the behavior of these bands when dealing with incomplete moir\'e supercells in twisted bilayer graphene nanoribbons. The findings reveal a transition from dispersive to flat bands near charge neutrality as the supercell completeness varies. Moreover, it is observed that the microscopic edges can influence the energy of states localized at the AA regions near the borders.
Topics & Concepts
Bilayer grapheneCondensed matter physicsSupercellStackingMaterials scienceBilayerGraphene nanoribbonsLattice (music)ElectronGraphenePhysicsNanotechnologyNuclear magnetic resonanceQuantum mechanicsThunderstormBiologyMembraneMeteorologyAcousticsGeneticsGraphene research and applicationsQuantum and electron transport phenomenaQuantum Electrodynamics and Casimir Effect