• 文献标题:   Plasmon modes in graphene-GaAs heterostructures
  • 文献类型:   Article
  • 作  者:   MEN NV, KHANH NQ
  • 作者关键词:   graphene, plasmon, collective excitation
  • 出版物名称:   PHYSICS LETTERS A
  • ISSN:   0375-9601 EI 1873-2429
  • 通讯作者地址:   Univ Sci VNUHCM
  • 被引频次:   6
  • DOI:   10.1016/j.physleta.2017.09.047
  • 出版年:   2017

▎ 摘  要

We investigate the plasmon dispersion relation and damping rate of collective excitations in a double layer system consisting of bilayer graphene and GaAs quantum well, separated by a distance d, at zero temperature with no interlayer tunneling. We use the random-phase-approximation dielectric function and take into account the nonhomogeneity of the dielectric background of the system. We show that the plasmon frequencies and damping rates depend considerably on interlayer correlation parameters, electron densities and dielectric constants of the contacting media. (C) 2017 Elsevier B.V. All rights reserved.