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Observation of coherent lattice vibrations in epitaxial graphene

Cited 1 time in Web of Science Cited 1 time in Scopus
Issue Date
2013-10
Citation
Solid State Communications, Vol.171, pp.14-16
Keywords
GrapheneCoherent phonon
Abstract
We demonstrate time-resolved coherent lattice vibrations in graphene using femtosecond laser pulses. The high-frequency G-mode phonons were excited by impulsive stimulated Raman scattering, and detected via measuring induced reflectivity modulations. The dephasing time of graphene was found to be shorter than that of semiconducting carbon nanotubes (CNTs), but longer than metallic CNTs. The E-2g symmetry was verified from the polarization-dependent phonon amplitudes. (C) 2013 Elsevier Ltd. All rights reserved.
ISSN
0038-1098
URI
https://hdl.handle.net/10371/172286
DOI
https://doi.org/10.1016/j.ssc.2013.07.026
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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