• 文献标题:   Asymmetric and connected graphene dimers for a tunable plasmonic response
  • 文献类型:   Article
  • 作  者:   ROSOLEN G, MAES B
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121 EI 1550-235X
  • 通讯作者地址:   Univ Mons
  • 被引频次:   6
  • DOI:   10.1103/PhysRevB.92.205405
  • 出版年:   2015

▎ 摘  要

We investigate the infrared response of graphene dimers with various doping and polarization configurations. The interaction between the plasmonic resonances of graphene nanodisks leads to a rich, tunable behavior. The hybridization of the nanodisk modes enables the excitation of resonances that would be invisible or dark in a single disk. The simulation results show various anticrossings that depend on dark-bright or bright-bright mode coupling, which we can describe via a simple Hamiltonian model. In addition, we determine the response of a dimer bridged by a tunable graphene junction. This structure leads to charge transfer plasmons, with an even higher absorption efficiency and tunability than nonbridged dimers.