2011/11/30 by Yu. E. Lozovik, A. A. Sokolik, Alexey A. Sokolik · 4 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Coulomb #Diamond and Carbon-based Materials Research #Dispersion (optics) #Electron #Graphene #Graphene research and applications #Landau quantization #Magnetic field #Mixing (physics) #Physics #Quantum and electron transport phenomena #Quantum mechanics #cond-mat.mes-hall
paper · pdf · doi:10.1186/1556-276x-7-134
published as Nanoscale Research Letters 7, 134 (2012) · Ref. [26] was added and Ref. [18] was updated
arxiv created 2012/01/13 · openalex publication_date 2012/02/16 · arxiv updated 2012/07/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.PACS: 73.22.Pr; 71.35.Ji; 73.43.Mp; 71.70.Gm.