• 文献标题:   Control of Raman Scattering Quantum Interference Pathways in Graphene
  • 文献类型:   Article
  • 作  者:   CHEN X, REICHARDT S, LIN ML, LENG YC, LU Y, WU H, MEI R, WIRTZ L, ZHANG X, FERRARI AC, TAN PH
  • 作者关键词:   quantum interference, resonant raman scattering, electronelectron interaction, electronphonon coupling, graphite intercalation compound
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1021/acsnano.3c00180 EA MAR 2023
  • 出版年:   2023

▎ 摘  要

Graphene is an ideal platform to study the coherence of quantum interference pathways by tuning doping or laser excitation energy. The latter produces a Raman excitation profile that provides direct insight into the lifetimes of intermediate electronic excitations and, therefore, on quantum interference, which has so far remained elusive. Here, we control the Raman scattering pathways by tuning the laser excitation energy in graphene doped up to 1.05 eV. The Raman excitation profile of the G mode indicates its position and full width at half-maximum are linearly dependent on doping. Doping-enhanced electron-electron interactions dom-inate the lifetimes of Raman scattering pathways and reduce Raman interference. This will provide guidance for engineering quantum pathways for doped graphene, nanotubes, and topological insulators.