Title of article
Observation of coherent lattice vibrations in epitaxial graphene
Author/Authors
Kim، نويسنده , , J.H. and Kim، نويسنده , , S.H and JUNG، نويسنده , , M.H. and Hong، نويسنده , , B.H. and Yee، نويسنده , , K.J.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
3
From page
14
To page
16
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 E2g symmetry was verified from the polarization-dependent phonon amplitudes.
Keywords
A. Graphene , D. Coherent phonon
Journal title
Solid State Communications
Serial Year
2013
Journal title
Solid State Communications
Record number
1794439
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