Article (Scientific journals)
Control of Raman Scattering Quantum Interference Pathways in Graphene
Chen, Xue; Reichardt, Sven; Lin, Miao-Ling et al.
2023In ACS Nano
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Keywords :
quantum interference; resonant Raman spectroscopy; electron-phonon coupling
Abstract :
[en] 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 dominate 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.
Disciplines :
Physics
Author, co-author :
Chen, Xue
Reichardt, Sven ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Lin, Miao-Ling
Leng, Yu-Chen
Lu, Yan
Wu, Heng
Mei, Rui
Wirtz, Ludger ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Zhang, Xin
Ferrari, Andrea C.
Tan, Ping-Heng
External co-authors :
yes
Language :
English
Title :
Control of Raman Scattering Quantum Interference Pathways in Graphene
Publication date :
2023
Journal title :
ACS Nano
ISSN :
1936-086X
Publisher :
American Chemical Society
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
FnR Project :
FNR14802965 - Resonant Raman Scattering Dynamics From First Principles, 2020 (01/05/2021-30/04/2024) - Sven Reichardt
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