Influence of Landau level mixing on the properties of elementary excitations in graphene in strong magnetic field

Abstract

Massless Dirac electrons in graphene fill Landau levels with energies scaled as square roots of their numbers. Coulomb interaction between electrons leads to mixing of different Landau levels. The relative strength of this interaction depends only on dielectric susceptibility of surrounding medium and can be large in suspended graphene. We consider influence of Landau level mixing on the properties of magnetoexcitons and magnetoplasmons - elementary electron-hole excitations in graphene in quantizing magnetic field. We show that, at small enough background dielectric screening, the mixing leads to very essential change of magnetoexciton and magnetoplasmon dispersion laws in comparison with the lowest Landau level approximation.

Ref. [26] was added and Ref. [18] was updated

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Cited by in corpus (10)

• Landau level spectroscopy of electron-electron interactions in graphene
• Many-particle effects in the cyclotron resonance of encapsulated monolayer graphene
• Resonant manifestations of chiral excitons in magnetooptical Faraday and Kerr effects in topological insulator film
• Raman scattering of graphene based systems in high magnetic fields
• Many-body effects of Coulomb interaction on Landau levels in graphene
• Theory of inter-Landau level magnetoexcitons in bilayer graphene
• Polarization of graphene in a strong magnetic field beyond the Dirac cone approximation
• Many-body filling-factor dependent renormalization of Fermi velocity in graphene in strong magnetic field
• Engineering plasmon modes and their loss in armchair graphene nanoribbons by selected edge-extended defects
• Diverse fundamental properties in stage-n graphite alkali-intercalation compounds: anode materials of Li+-based batteries