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Extracting the Anharmonic Properties of the G-Band in Graphene Nanoplatelets

Journal Article · · Journal of Physical Chemistry. C
 [1];  [2];  [3];  [4];  [4]
  1. Oakland Univ., Rochester, MI (United States); Deutsches GeoForschungsZentrum, Potsdam (Germany)
  2. Deutsches GeoForschungsZentrum, Potsdam (Germany)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Oakland Univ., Rochester, MI (United States)
We have examined the effect of temperature and pressure on the Raman-active G-band of graphene nanoplatelets with an average thickness of 4 nm. Measuring the Raman mode frequency and width of the G-band as a function of temperature and pressure allowed us to extract the individual factors contributing to the frequency and width of the G-band, that is, the volumetric (thermal expansion) and anharmonic (phonon–phonon interactions) terms responsible for the Raman shift and the electron–phonon coupling and anharmonic contributions controlling the width/lifetime of the G-band. Considering the available literature, the significant role of the anharmonic effects in understanding the G-band physical processes in carbon-based systems is highlighted.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1602661
Alternate ID(s):
OSTI ID: 1605440
Report Number(s):
LLNL-JRNL--798948; 998963
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 8 Vol. 124; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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  • Marsden, Barry; Mummery, Andrew; Mummery, Paul
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 474, Issue 2218 https://doi.org/10.1098/rspa.2018.0075
journal October 2018
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