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

Nanoscale Research Letters
Yurii E Lozovik, Alexey A Sokolik

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.PACS: 73.22.Pr; 71.35.Ji; 73.43.Mp; 71.70.Gm.

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Citations

Sep 22, 2015·Physical Chemistry Chemical Physics : PCCP·Chiun-Yan LinMing-Fa Lin
Aug 19, 2014·Nanoscale·Antonio Politano, Gennaro Chiarello
Apr 11, 2015·Physical Review Letters·C FaugerasM Potemski
Feb 14, 2018·Physical Review Letters·B Jordan RussellErik A Henriksen
Jul 23, 2020·Scientific Reports·Duy Khanh NguyenMing-Fa Lin
Sep 3, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Thi-Nga DoDanhong Huang

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