• 文献标题:   Acoustic Plasmons in Graphene Sandwiched between Two Metallic Slabs
  • 文献类型:   Article
  • 作  者:   SALASNICH L
  • 作者关键词:   graphene, quantum manybody theory, acoustic plasmon
  • 出版物名称:   SYMMETRYBASEL
  • ISSN:  
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.3390/sym13040684
  • 出版年:   2021

▎ 摘  要

We study the effect of two metallic slabs on the collective dynamics of electrons in graphene positioned between the two slabs. We show that if the slabs are perfect conductors, the plasmons of graphene display a linear dispersion relation. The velocity of these acoustic plasmons crucially depends on the distance between the two metal gates and the graphene sheet. In the case of generic slabs, the dispersion relation of graphene plasmons is much more complicated, but we find that acoustic plasmons can still be obtained under specific conditions.