Charge Carriers Asymmetry and Energy Minigaps in Monolayer Graphene: Dirac – Hartree – Fock approach

Abstract

Secondary quantized self-consistent Dirac – Hartree – Fock approach has been used to consider electronic properties of monolayer graphene stipulated by spin-polarized states. The advantage of such an approach compared with recently used pseudo-relativistic massless Dirac approach is its ability to explain fine experimental results on energy band minigaps and charge carrier asymmetry in graphene. The mechanism responsible for valent and conduction zones shifts has also been proposed. Theoretical estimation of electron and holes cyclotron masses performed is in very good agreement with known experimental data.