Far-Field Spectroscopy and Near-Field Optical Imaging of Coupled Plasmon-Phonon Polaritons in 2D van der Waals Heterostructures

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Xiaoxia Yang
  • Feng Zhai
  • Hai Hu
  • Debo Hu
  • Ruina Liu
  • Shunping Zhang
  • Mengtao Sun
  • Zhipei Sun

  • Jianing Chen
  • Qing Dai

Research units

  • National Center for Nanoscience and Technology Beijing
  • Zhejiang Normal University
  • Wuhan University
  • Chinese Academy of Sciences

Abstract

A new hybridized plasmon-phonon polariton mode in graphene/h-BN van der Waals heterostructures is presented, featuring the ultrahigh field confinement characteristic of the graphene plasmon and the long lifetime property of the h-BN transverse optical phonon. This enables an ultralong hybrid plasmon lifetime of up to 1.6 ps (with ultrahigh mode confinement up to >l0 2/7000 and ultrasmall group velocity down to 0.001c, where c is the speed of light in vacuum), superior to any localized plasmon ever demonstrated.

Details

Original languageEnglish
Pages (from-to)2931–2938
Number of pages8
JournalAdvanced Materials
Volume28
Issue number15
Publication statusPublished - 10 Apr 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • Graphene, Monolayer h-BN, Plasmon-phonon polaritons, Van der Waals heterostructures

ID: 1729191