• 文献标题:   Resonant Edge Magnetoplasmons and Their Decay in Graphene
  • 文献类型:   Article
  • 作  者:   KUMADA N, ROULLEAU P, ROCHE B, HASHISAKA M, HIBINO H, PETKOVIC I, GLATTLI DC
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:   NTT Corp
  • 被引频次:   26
  • DOI:   10.1103/PhysRevLett.113.266601
  • 出版年:   2014

▎ 摘  要

We investigate resonant edge magnetoplasmons (EMPs) and their decay in graphene by high-frequency electronic measurements. From EMP resonances in disk shaped graphene, we show that the dispersion relation of EMPs is nonlinear due to interactions, giving rise to the intrinsic decay of EMP wave packets. We also identify extrinsic dissipation mechanisms due to interaction with localized states in bulk graphene from the decay time of EMP wave packets. We indicate that, owing to the linear band structure and the sharp edge potential, EMP dissipation in graphene can be lower than that in GaAs systems.