• DocumentCode
    3725978
  • Title

    Coherent phonon dynamics in single-layer and multilayer graphene

  • Author

    Taeyoung Jeong;Suyong Jung;Kiju Yee

  • Author_Institution
    Department of Physics, Chungnam National University, Daejeon, 305-764, Korea
  • Volume
    2
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    Coherent phonon dynamics of single-layer graphene (SLG) and multi-layer graphene (MLG) on sapphire substrate were investigated using femtosecond pump-probe techniques. The center peak of G-mode phonon redshift with the number of graphene layer and the temperature increases in the temperature range between 300 K and 900 K. Also, the dephasing time upshift from 0.82 ps to 1.14 ps as the number of graphene layer increases. This results reflect thermal expansion and damping constant of SLG and MLG.
  • Keywords
    "Graphene","Phonons","Temperature measurement","Temperature distribution","Raman scattering","Ultrafast optics","Time-frequency analysis"
  • Publisher
    ieee
  • Conference_Titel
    Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2015 11th Conference on
  • Type

    conf

  • DOI
    10.1109/CLEOPR.2015.7375970
  • Filename
    7375970
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3725978